Powered by Deep Web Technologies
Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Acoustic paramagnetic logging tool  

DOE Patents (OSTI)

New methods and apparatus are disclosed which allow measurement of the presence of oil and water in geological formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleons present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth3 s magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation . The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be preformed in open boreholes and in cased well bores.

Vail, III, William B. (Bothell, WA)

1988-01-01T23:59:59.000Z

2

Dual excitation acoustic paramagnetic logging tool  

DOE Patents (OSTI)

New methods and apparatus are disclosed which allow measurement of the presence of oil and water in geological formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleons present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be performed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described. 6 figs.

Vail, W.B. III.

1989-02-14T23:59:59.000Z

3

Dual excitation acoustic paramagnetic logging tool  

DOE Patents (OSTI)

New methods and apparatus are disclosed which allow measurement of the presence of oil and water in gelogical formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleous present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be preformed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described.

Vail, III, William B. (Bothell, WA)

1989-01-01T23:59:59.000Z

4

Building Energy Software Tools Directory: AcousticCalc  

NLE Websites -- All DOE Office Websites (Extended Search)

AcousticCalc AcousticCalc Developed over the last decade, AcousticCalc helps designers predict sound levels at the room level from a distant sound source. The program uses the ASHRAE Handbook and ASHRAE's 1991 Algorithms for HVAC Acoustics handbook methods with the "Source-Path-Receiver" model. This easy-to-use Windows-based program allows a user to define and save unlimited number of sound sources, save and define unlimited number of sound "paths" (composed of long list of possible duct component types) and model the ceiling effect and three different models for room effect. AcousticCalc allows a user to import and export (share) sound sources, user-defined devices, terminal units, and duct silencers with other users. Easy-to-navigate "tree" modeling allows an unlimited number of sound

5

Building Energy Software Tools Directory: Acoustics Program  

NLE Websites -- All DOE Office Websites (Extended Search)

Acoustics Program Acoustics Program Developed to help designers accurately model the sound level reaching building tenant's ears, the Trane Acoustics Program (TAP) "projects" equipment sound power data through the surroundings (e.g., floors, ductwork, walls), to estimate the sound level that will be heard. Industry-standard calculations published by ASHRAE's 1991 Algorithms for HVAC Acoustics handbook are the basis for this estimate. In TAP, you can model the conditions of an HVAC system by choosing specific equipment and building component criteria. TAP will analyze the sound path and calculate the total effect for the enclosed space. You can continuously adjust the data and system design criteria to compare the results effortlessly. TAP will even plot presentation quality graphs of

6

Improved efficiency of an acoustic parametric source  

Science Journals Connector (OSTI)

In the customary design of an acoustic parametric source a primary signal consisting of two high–frequency wave components is projected into the water. Because of the inherent nonlinearity of acoustic propagation the two primary components mix to form a wave at the difference frequency. This paper describes how one can increase the parametric conversion of energy into the difference–frequency beam through the use of primary signals other than the two–component signal described above. For example another primary signal one might use consists of a sinusoidal carrier wave undergoing amplitude modulation. Use of such an AM primary signal with 100% modulation leads to a predicted difference–frequency pressure amplitude that is 2.5 dB greater than the corresponding amplitude obtained with a two–component primary signal of the same total input power. This prediction shows approximate agreement with a measured increase of 2.1 dB. For a primary signal consisting of N components theory predicts an increase in difference–frequency level that approaches 6 dB as an upper limit.

Anthony I. Eller

1974-01-01T23:59:59.000Z

7

Subsurface Glider Localization Using Broadband Acoustic Sources  

E-Print Network (OSTI)

Researcher, ORE Abstract Ocean gliders are low-power, buoyancy-driven, autonomous underwater vehicles inherent in broadband ocean acoustic tomography signals, this uncertainty can be reduced by 1-2 orders

Frandsen, Jannette B.

8

Hybrid Ground Source System Analysis and Tool Development | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hybrid Ground Source System Analysis and Tool Development Hybrid Ground Source System Analysis and Tool Development Project objectives: 1. Compile filtered hourly data for three...

9

Final Report: Geothermal Dual Acoustic Tool for Measurement of Rock Stress  

SciTech Connect

This paper outlines the technology need for a rock formation stress measurement in future EGS wells. This paper reports on the results of work undertaken under a Phase I, DOE/SBIR on the feasibility to build an acoustic well logging tool for measuring rock formation stress.

Normann, Randy A.

2014-12-01T23:59:59.000Z

10

Sandia National Laboratories: open source WEC modeling tool  

NLE Websites -- All DOE Office Websites (Extended Search)

open source WEC modeling tool Sandia, NREL Release Wave Energy Converter Modeling and Simulation Code: WEC-Sim On July 29, 2014, in Computational Modeling & Simulation, Energy,...

11

Application note : using open source schematic capture tools with Xyce.  

SciTech Connect

The development of the XyceTM Parallel Electronic Simulator has focused entirely on the creation of a fast, scalable simulation tool, and has not included any schematic capture or data visualization tools. This application note will describe how to use the open source schematic capture tool gschem and its associated netlist creation tool gnetlist to create basic circuit designs for Xyce, and how to access advanced features of Xyce that are not directly supported by either gschem or gnetlist.

Russo, Thomas V.

2013-08-01T23:59:59.000Z

12

E-Print Network 3.0 - acoustic source strength Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Underwater Vehicles Laboratory, MIT Sea Grant Collection: Engineering 80 Vibro-Acoustics Consortium Assessment of Numerical Models and Summary: sources BE mesh r vn p A r ej t kr...

13

2D and 3D Acoustic Source Localization Using the AML Algorithm and ENSBox Nodes  

E-Print Network (OSTI)

Networked Sensing 2D and 3D Acoustic Source Localizationhairs, median red square) 3D bearing estimates: (azimuth,1.37,1.52) (2.38,1.82) Node 153 3D AML performance UCLA –

2007-01-01T23:59:59.000Z

14

Role of acoustical technology in the development of new energy sources  

Science Journals Connector (OSTI)

During the past five years considerable progress has been made in the control and abatement of excessive and/or harmful noise as well as vibration associated with the transportation construction and industrial activities and systems. This has been a definite contribution of acoustics towards improving the quality of our environment and community life alike. A similar kind of concerted effort is required whereby the know1edge of acoustics can be advantageously utilized in the development of much?needed new energy sources. Among the more challenging acoustical technologies available during exploration detection and identification of new conventional and non?conventional energy sources are those utilizing ultrasonic electroacoustics underwater acoustics and geoacoustics principles and/or disciplines. For example echo?sounding has been effectively used in the detection and assessment of marine resources. In the same way acousti?coring and seismic reflection techniques have been successfully employed during the exploration and detection phases associated with “mining geology” and “marine sediments.” However the most attractive area of new energy source development where acoustical technology can best be utilized appears to be in the exploration of active "geothermal" sites. The ground noise(seismic)measurements utilizing sensitive and precision acoustical instrumentation can tremendously accelerate development of this important untapped and nonpolluting form of natural energy. This paper reviews the interaction of acoustics with new energy resource development programs.

A. G. Jhaveri

1975-01-01T23:59:59.000Z

15

Negative resistances in nonlinear lumped acoustic systems and IC?engine source data  

Science Journals Connector (OSTI)

Negative real parts of impedances can be found in IC?engine source characterization measurements. There is an obvious problem with the physical interpretation of negative resistances and consequently there have been many questions about the validity of such results. This paper is an attempt to explain the origin of the mentioned negative acoustic resistances. To this end a simple nonlinear lumped acoustic system that is a force?driven damped mass?spring system is analyzed. Since this is a common case in acoustic measurements linear analysis is performed in spite of the obvious nonlinear properties. It is shown that the degree of nonlinearity in the system is crucial to the values of the acoustic impedance. Furthermore it is shown that it is possible to achieve negative resistances already in a simple lumped system. Finally these results are also compared to simulated and measured IC?engine source impedances.

Fredrik Albertson

1999-01-01T23:59:59.000Z

16

Acoustic emission non-destructive testing of structures using source location techniques.  

SciTech Connect

The technology of acoustic emission (AE) testing has been advanced and used at Sandia for the past 40 years. AE has been used on structures including pressure vessels, fire bottles, wind turbines, gas wells, nuclear weapons, and solar collectors. This monograph begins with background topics in acoustics and instrumentation and then focuses on current acoustic emission technology. It covers the overall design and system setups for a test, with a wind turbine blade as the object. Test analysis is discussed with an emphasis on source location. Three test examples are presented, two on experimental wind turbine blades and one on aircraft fire extinguisher bottles. Finally, the code for a FORTRAN source location program is given as an example of a working analysis program. Throughout the document, the stress is on actual testing of real structures, not on laboratory experiments.

Beattie, Alan G.

2013-09-01T23:59:59.000Z

17

QUANTITATIVE DAMAGE ASSESSMENT OF HYBRID COMPOSITE WIND TURBINE BLADES BY ENERGY BASED ACOUSTIC EMISSION SOURCE  

E-Print Network (OSTI)

energy with higher efficiency and cost-effective considerations, the size of the wind turbine blade hasQUANTITATIVE DAMAGE ASSESSMENT OF HYBRID COMPOSITE WIND TURBINE BLADES BY ENERGY BASED ACOUSTIC in the wind turbine blade. It was tried to apply a new source location method, which has a developed algorithm

Boyer, Edmond

18

Noise Sources and Room Acoustics of Closed Circuit Subsonic Wind Tunnels  

Science Journals Connector (OSTI)

The noise aspects of subsonic wind tunnels have been studied experimentally on full?scale and model?scale tunnels. In wind tunnels without acoustical treatment the driving fan and the boundary layer suction fan were found to be the dominant noise sources. The fan noise in the test section scales with the 6th power of the airspeed. Using this scaling one obtains a number the acoustical merit rating which permits one to compare the acoustical quality of different wind tunnels. Experimental results obtained in full scale as well as in scale models of closed circuit tunnels will be presented to illustrate the impulse response and spatial distribution of the sound pressure. Also the special instrumentation required for obtaining valid results will be discussed.

I. L. Vér

1973-01-01T23:59:59.000Z

19

Black box measurements ? Using a family of electrical circuits as a tool for self-guided learning in acoustical engineering  

Science Journals Connector (OSTI)

A partnership between Brazil's first undergraduate program in Acoustical Engineering and the Institute of Technical Acoustics of RWTH Aachen University yielded a didactic project that uses the engineering software MATLAB with the ITA-Toolbox to teach acoustic measurements. Simple electrical circuits are used to mimic typical behavior of acoustical systems. This low-cost solution has proven to be didactically very effective since it helps students to identify themselves with the measurement tasks. Two hardware solutions were developed-a simple oscillator circuit integrated into connectors of audio cables and a desktop box containing seven different transfer characteristics ranging from ideal linear and time-invariant to nonlinear and time-varying behavior. Undergraduate students of Acoustical Engineering used both devices in classroom experiments for self-guided learning by comparing their results to published results. Students were able to learn the fundamental concepts of acoustical measurements and to handle measurement tasks. Besides the practical experiences and the learning effect the students were also encouraged to step into the open source routines of the software understand the signal processing steps adapt routines and even write their own ones e.g. a GUI that provides effective control of the measurement via touch-screens.

Bernardo H. Murta; Jessica Lins; Sergio Aguirre; Stephan Paul; Eric Brandao; Pascal Dietrich

2013-01-01T23:59:59.000Z

20

Black box measurements – Using a family of electrical circuits as a tool for self-guided learning in acoustical engineering  

Science Journals Connector (OSTI)

A partnership between Brazil’s first undergraduate program in Acoustical Engineering and the Institute of Technical Acoustics of RWTH Aachen University yielded in a didactic project that uses the engineering software MATLAB with the ITA-Toolbox to teach acoustic measurements. Simple electrical circuits are used to mimic typical behavior of acoustical systems. This low-cost solution has proven to be didactically very effective since it helps students to identify themselves with the measurement tasks. Two hardware solutions were developed-a simple oscillator circuit integrated into connectors of audio cables and a desktop box containing seven different transfer characteristics ranging from ideal linear and time-invariant to nonlinear and time-varying behavior. Undergraduate students of Acoustical Engineering used both devices in classroom experiments for self-guided learning by comparing their results to published results. Students were able to learn the fundamental concepts of acoustical measurements and to handle measurement tasks. Besides the practical experiences and the learning effect the students were also encouraged to step into the open source routines of the software understand the signal processing steps adapt routines and even write their own ones e.g. a GUI that provides effective control of the measurement via touch-screens.

Bernardo H. Murta; Sergio Aguirre; Stephan Paul

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

System and method for investigating sub-surface features of a rock formation with acoustic sources generating coded signals  

DOE Patents (OSTI)

A system and a method for investigating rock formations includes generating, by a first acoustic source, a first acoustic signal comprising a first plurality of pulses, each pulse including a first modulated signal at a central frequency; and generating, by a second acoustic source, a second acoustic signal comprising a second plurality of pulses. A receiver arranged within the borehole receives a detected signal including a signal being generated by a non-linear mixing process from the first-and-second acoustic signal in a non-linear mixing zone within the intersection volume. The method also includes-processing the received signal to extract the signal generated by the non-linear mixing process over noise or over signals generated by a linear interaction process, or both.

Vu, Cung Khac; Nihei, Kurt; Johnson, Paul A; Guyer, Robert; Ten Cate, James A; Le Bas, Pierre-Yves; Larmat, Carene S

2014-12-30T23:59:59.000Z

22

Generation of acoustic-gravity waves in ionospheric HF heating experiments : simulating large-scale natural heat sources  

E-Print Network (OSTI)

In this thesis, we investigate the potential role played by large-scale anomalous heat sources (e.g. prolonged heat wave events) in generating acoustic-gravity waves (AGWs) that might trigger widespread plasma turbulence ...

Pradipta, Rezy

2012-01-01T23:59:59.000Z

23

System and method for characterizing, synthesizing, and/or canceling out acoustic signals from inanimate sound sources  

DOE Patents (OSTI)

A system and method for characterizing, synthesizing, and/or canceling out acoustic signals from inanimate sound sources is disclosed. Propagating wave electromagnetic sensors monitor excitation sources in sound producing systems, such as machines, musical instruments, and various other structures. Acoustical output from these sound producing systems is also monitored. From such information, a transfer function characterizing the sound producing system is generated. From the transfer function, acoustical output from the sound producing system may be synthesized or canceled. The methods disclosed enable accurate calculation of matched transfer functions relating specific excitations to specific acoustical outputs. Knowledge of such signals and functions can be used to effect various sound replication, sound source identification, and sound cancellation applications.

Holzrichter, John F. (Berkeley, CA); Burnett, Greg C. (Livermore, CA); Ng, Lawrence C. (Danville, CA)

2007-10-16T23:59:59.000Z

24

Full-scale rocket motor acoustic tests and comparisons with empirical source models  

Science Journals Connector (OSTI)

Development of the next-generation space flight vehicles has prompted a renewed focus on rocket sound source characterization and near-field propagation modeling. Improved measurements of the noise near the rocket plume are critical for direct determination of the noise environment. They are also crucial in providing inputs to empirical models and in validating computational aeroacoustics models. NASA's SP-8072 acoustic load prediction model (1971) is a widely used method for predicting liftoff acoustics. The method implements two Distributed Source Methods (DSM-1 and DSM-2) which predict the loading as the sum of the radiated field from each source distributed along the plume. In this paper measurements of a static horizontal firing of an Alliant Techsystem (ATK) Orion 50S XLG are analyzed with respect to the historical data that drive the SP-8072 prediction models. Comparisons include total sound power and sound power spectrum and the distribution of the sound power and sound power spectrum along the length of the plume. Scalar pressure measurements yield reasonable agreement between the Orion-50S XLG data and both methods for undeflected plumes in the original SP-8072. However development of these comparisons has prompted significant questions regarding the underlying physics of the two methods.

Michael M. James; Kent L. Gee; Tracianne B. Neilsen

2014-01-01T23:59:59.000Z

25

Infuse: A Tool for Automatically Managing and Coordinating Source Changes in Large Systems  

E-Print Network (OSTI)

Infuse: A Tool for Automatically Managing and Coordinating Source Changes in Large Systems Dewayne changes occur outside the tool. In contrast, Infuse concentrates on the actual change process and provides facilities for both managing and coordinating source changes. Infuse provides facilities for automatically

Perry, Dewayne E.

26

Hybrid Ground Source System Analysis and Tool Development  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Development Principal Investigator Scott Hackel, Energy Center of Wisconsin Ground Source Heat Pumps Demonstration Projects May 18, 2010 This presentation does not contain any...

27

Acoustic-gravity waves in ocean and atmosphere generated by an underwater source  

Science Journals Connector (OSTI)

Air-water interface becomes anomalously transparent and the power flux in the wave transmitted into the air increases dramatically when a compact sound source in water approaches the interface within a fraction of wavelength [O.A. Godin Phys. Rev. Lett. 97 164301 (2006)]. The anomalous transparency of the ocean-atmosphere interface has important implications for detection of underwater explosions and monitoring of compliance with the Comprehensive Nuclear Test Ban Treaty. At wave frequencies below 0.1 Hz it becomes necessary to take gravity into account. Then fluid buoyancy and compressibility simultaneously serve as restoring forces and mechanical perturbations in the water and in the air propagate as acoustic-gravity waves (AGW). It was previously shown [I. Fuks and O.A. Godin Proc. OCEANS'11 MTS/IEEE Kona HI Sept. 2011] that in the case of a shallow source in an ocean of an infinite depth a sharp peak in the power flux into air appears at frequencies close to a cutoff frequency of about 4mHz of a surfaceacoustic-gravity wave. In this paper we extend these results to the ocean of a finite depth where the AGWs interact with an elastic bottom.

Iosif Fuks; Oleg A. Godin

2012-01-01T23:59:59.000Z

28

E-Print Network 3.0 - acoustic source identification Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

OF OCEANIC ENGINEERING, VOL. 24, NO. 2, APRIL 1999 Multimegameter-Range Acoustic Data Obtained Summary: in the identification. Arrays and are probably situated such that...

29

Nonlinear acoustics: A transition from laboratory to a practical fatigue assessment tool.  

Science Journals Connector (OSTI)

The ultrasonicsecond harmonic generation technique measuring the nonlinearity parameter has been developed and used in laboratories for several decades throughout the world. Many students and visiting scholars from numerous countries devoted their passions at the physical acoustics laboratories led by Dr. Mack Breazeale for 50 years. During that period of time nonlinear elastic properties of single crystals polycrystallinealloys superconductors ceramics and composites were measured. New measurement systems and techniques were also developed to understand temperature dependent linear and nonlinear elastic behaviors of these materials over a temperature range from the liquid helium to Curie temperatures of piezoelectricceramics. It took years of research and development efforts with a persistent funding before a practical fatigue damage measurement technique was finally developed. The transition from a rack full of equipment to a portable fatigue damage measurement system a continuous iteration process was inevitable. The current system specifically designed for steam turbine blades fatigue inspections consists of a probe fixture and an industrial grade lunch?box computer with custom designed signal processing cards.

Jeong?Kwan Na

2010-01-01T23:59:59.000Z

30

JASPER: A PORTABLE FLEXIBLE OPEN-SOURCE SOFTWARE TOOL KIT FOR IMAGE CODING/PROCESSING  

E-Print Network (OSTI)

JASPER: A PORTABLE FLEXIBLE OPEN-SOURCE SOFTWARE TOOL KIT FOR IMAGE CODING/PROCESSING Michael D Columbia Vancouver, BC, V6T 1Z4, Canada E-mail: rababw@ece.ubc.ca ABSTRACT JasPer, a portable flexible open (such as JPEG 2000). JasPer is proving to be an extremely useful tool in a wide variety of applications

Adams, Michael D.

31

The Spallation Neutron Source A Powerful Tool for Materials Research  

E-Print Network (OSTI)

The wavelengths and energies of thermal and cold neutrons are ideally matched to the length and energy scales in the materials that underpin technologies of the present and future: ranging from semiconductors to magnetic devices, composites to biomaterials and polymers. The Spallation Neutron Source (SNS) will use an accelerator to produce the most intense beams of neutrons in the world when it is complete at the end of 2005. The project is being built by a collaboration of six U.S. Department of Energy laboratories. It will serve a diverse community of users drawn from academia, industry, and government labs with interests in condensed matter physics, chemistry, engineering materials, biology, and beyond.

Mason, Thomas E; Crawford, R K; Herwig, K W; Klose, F; Ankner, J F

2000-01-01T23:59:59.000Z

32

A Tool for Life Cycle Climate Performance (LCCP) Based Design of Residential Air Source Heat Pumps  

SciTech Connect

A tool for the design of air source heat pumps (ASHP) based on their life cycle climate performance (LCCP) analysis is presented. The LCCP model includes direct and indirect emissions of the ASHP. The annual energy consumption of the ASHP is determined based on AHRI Standard 210/240. The tool can be used as an evaluation tool when the user inputs the required performance data based on the ASHP type selected. In addition, this tool has system design capability where the user inputs the design parameters of the different components of the heat pump and the tool runs the system simulation software to calculate the performance data. Additional features available in the tool include the capability to perform parametric analysis and sensitivity study on the system. The tool has 14 refrigerants, and 47 cities built-in with the option for the user to add more refrigerants, based on NIST REFPROP, and cities, using TMY-3 database. The underlying LCCP calculation framework is open source and can be easily customized for various applications. The tool can be used with any system simulation software, load calculation tool, and weather and emissions data type.

Beshr, Mohamed [University of Maryland, College Park; Aute, Vikrant [University of Maryland, College Park; Abdelaziz, Omar [ORNL; Fricke, Brian A [ORNL; Radermacher, Reinhard [University of Maryland, College Park

2014-01-01T23:59:59.000Z

33

E-Print Network 3.0 - acoustic monitoring Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

System Designers... @ualg.pt 12;Acoustic Tomography: a tool for understanding the ocean S.M. Jesus (sjesus@ualg.pt) Si Source: Jesus, Srgio M. - Departamento de...

34

FLASH Code, Development and Applications: an Open Source Tool for HEDP |  

NLE Websites -- All DOE Office Websites (Extended Search)

FLASH Code, Development and Applications: an Open Source Tool for HEDP FLASH Code, Development and Applications: an Open Source Tool for HEDP Event Sponsor: Computation Institute Presentation Start Date: Dec 19 2013 - 12:30pm Building/Room: SEARLE 240A, 5735 S. Ellis Avenue - This talk will be broadcast via Adobe Connect (see below) Location: University of Chicago Speaker(s): Petros Tzeferacos Speaker(s) Title: University of Chicago Host: Don Lamb In this talk I will present recent and future developments of FLASH, an open source, multi-physics, finite-volume, shock capturing code with a broad range of capabilities. The code has recently been extended to tackle high-energy physics (HEDP) problems, such as laser-driven laboratory experiments, transforming it into a powerful tool for the HEDP community, both in academia and national labs. I will discuss the implementation and

35

Acoustic Emission Source Location in Unidirectional Carbon-Fibre-Reinforced Plastic Plates Using Virtually Trained Artificial Neural Networks  

SciTech Connect

Acoustic emission source location in a unidirectional carbon-fibre-reinforced plastic plate was attempted employing Artificial Neural Network (ANN) technology. The acoustic emission events were produced by a lead break, and the response wave received by piezoelectric sensors, type VS150-M resonant at 150 kHz. The waves were detected by a Vallen AMSY4 eight-channel instrumentation. The time of arrival, determined through the conventional threshold crossing technique, was used to measure the dependence of wave velocity on fibre orientation. A simple empirical formula, relying on classical lamination and suggested by wave propagation theory, was able to accurately model the experimental trend. Based on the formula, virtual training and testing data sets were generated for the case of a plate monitored by three transducers, and adopted to select two potentially effective ANN architectures. For final validation, experimental tests were carried out, positioning the source at predetermined points evenly distributed within the plate area. A very satisfactory correlation was found between the actual source locations and the ANN predictions.

Caprino, G.; Lopresto, V.; Leone, C.; Papa, I. [Department of Materials and Production Engineering, University of Naples 'Federico II', Piazzale Tecchio, 80, 80125, Naples (Italy)

2010-06-02T23:59:59.000Z

36

Tools  

Energy.gov (U.S. Department of Energy (DOE))

The Federal Energy Management Program (FEMP) compiles online tools to help agencies estimate energy savings.

37

Geek-Up[3.11.2011]: Energy Efficiency, Catalysis and Open Source Tools |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1.2011]: Energy Efficiency, Catalysis and Open Source 1.2011]: Energy Efficiency, Catalysis and Open Source Tools Geek-Up[3.11.2011]: Energy Efficiency, Catalysis and Open Source Tools March 11, 2011 - 4:37pm Addthis L. Keith Woo | Photo courtesy of Ames National Laboratory L. Keith Woo | Photo courtesy of Ames National Laboratory Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs Ames Laboratory researcher and Iowa State University professor L. Keith Woo is on the search for catalysts that lead to more efficient, safer and cleaner chemical reactions that work at lower pressures and temperatures and create less waste. In one project, Dr. Woo is working to understand the chemistry behind fast pyrolysis for creating bio-oil from biomass. Fast pyrolysis quickly heats up biomass (such as corn stalks and leaves) in the absence of oxygen to

38

Development of design tools for ground-source heat pump piping  

SciTech Connect

High-density polyethylene (HDPE) piping systems with thermal fusion joints have several attractive characteristics when applied to ground-source heat pump (GSHP) systems. However, engineers may not have access to GSHP piping and fitting head loss data or to easy-to-use tools for piping design/pump sizing. Some GSHP systems have been conservatively designed with pumps that are grossly oversized. Systems have been installed in which the pump energy use exceeds heat pump energy. In some cases, engineers completely avoid the use of GSHPs because they are not comfortable with the low level of sophistication and the difficulty of using current GSHP design tools. A project has been undertaken to measure head loss in common GSHP fittings and pipe design and to develop a set of easy-to-use and accurate piping design tools. These tools will not only give designers more confidence but will reduce the cost of GSHPs by reducing oversizing and piping complexity that has been common in some installations. The results of this project are presented in a format similar to the tools currently used by practicing HVAC design engineers. Tables for fitting equivalent lengths and k-factors have been developed. Log-log plots of head loss vs. flow rate and liquid velocity are presented in a format similar to the plots appearing in the 1993 ASHRAE Handbook--Fundamentals. These tables and charts for HDPE piping components complement existing charts and tables for traditional piping systems.

Kavanaugh, S. [Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Mechanical Engineering

1998-10-01T23:59:59.000Z

39

Global search tool for the Advanced Photon Source Integrated Relational Model of Installed Systems (IRMIS) database.  

SciTech Connect

The Integrated Relational Model of Installed Systems (IRMIS) is a relational database tool that has been implemented at the Advanced Photon Source to maintain an updated account of approximately 600 control system software applications, 400,000 process variables, and 30,000 control system hardware components. To effectively display this large amount of control system information to operators and engineers, IRMIS was initially built with nine Web-based viewers: Applications Organizing Index, IOC, PLC, Component Type, Installed Components, Network, Controls Spares, Process Variables, and Cables. However, since each viewer is designed to provide details from only one major category of the control system, the necessity for a one-stop global search tool for the entire database became apparent. The user requirements for extremely fast database search time and ease of navigation through search results led to the choice of Asynchronous JavaScript and XML (AJAX) technology in the implementation of the IRMIS global search tool. Unique features of the global search tool include a two-tier level of displayed search results, and a database data integrity validation and reporting mechanism.

Quock, D. E. R.; Cianciarulo, M. B.; APS Engineering Support Division; Purdue Univ.

2007-01-01T23:59:59.000Z

40

An open source GIS tool to quantify the visual impact of wind turbines and photovoltaic panels  

Science Journals Connector (OSTI)

Abstract Although there are clear economic and environmental incentives for producing energy from solar and wind power, there can be local opposition to their installation due to their impact upon the landscape. To date, no international guidelines exist to guide quantitative visual impact assessment of these facilities, making the planning process somewhat subjective. In this paper we demonstrate the development of a method and an Open Source GIS tool to quantitatively assess the visual impact of these facilities using line-of-site techniques. The methods here build upon previous studies by (i) more accurately representing the shape of energy producing facilities, (ii) taking into account the distortion of the perceived shape and size of facilities caused by the location of the observer, (iii) calculating the possible obscuring of facilities caused by terrain morphology and (iv) allowing the combination of various facilities to more accurately represent the landscape. The tool has been applied to real and synthetic case studies and compared to recently published results from other models, and demonstrates an improvement in accuracy of the calculated visual impact of facilities. The tool is named r.wind.sun and is freely available from GRASS GIS AddOns.

Annalisa Minelli; Ivan Marchesini; Faith E. Taylor; Pierluigi De Rosa; Luca Casagrande; Michele Cenci

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

E-Print Network 3.0 - acoustic environments prediction Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

Introduction The Acoustic Oceanographic Buoy... (AOB) is a light acoustic receiving device that incorporates acoustic and ... Source: Jesus, Srgio M. - Departamento de...

42

Methods and apparatus for measurement of the resistivity of geological formations from within cased wells in presence of acoustic and magnetic energy sources  

DOE Patents (OSTI)

Methods and apparatus are provided for measuring the acoustically modulated electronic properties of geological formations and cement layers adjacent to cased boreholes. Current is passed from an electrode in electrical contact with the interior of the borehole casing to an electrode on the surface of the earth. Voltage measuring electrodes in electrical contact with the interior of the casing measure the voltage at various points thereon. The voltage differences between discrete pairs of the voltage measuring electrodes provide a measurement of the leakage current conducted into formation in the vicinity of those electrodes. Simultaneously subjecting the casing and formation to an acoustic source acoustically modulates the leakage current measured thereby providing a measure of the acoustically modulated electronic properties of the adjacent formation. Similarly, methods and apparatus are also described which measure the leakage current into formation while simultaneously subjecting the casing to an applied magnetic field which therefore allows measurement of the magnetically modulated electronic properties of the casing and the adjacent formation.

Vail, III, William B. (Bothell, WA)

1991-01-01T23:59:59.000Z

43

Evaluation of servo, geometric and dynamic error sources on five axis high-speed machine tool  

E-Print Network (OSTI)

Many sources of errors exist in the manufacturing process of complex shapes. Some approximations occur at each step from the design geometry to the machined part. The aim of the paper is to present a method to evaluate the effect of high speed and high dynamic load on volumetric errors at the tool center point. The interpolator output signals and the machine encoder signals are recorded and compared to evaluate the contouring errors resulting from each axis follow-up error. The machine encoder signals are also compared to the actual tool center point position as recorded with a non-contact measuring instrument called CapBall to evaluate the total geometric errors. The novelty of the work lies in the method that is proposed to decompose the geometric errors in two categories: the quasi-static geometric errors independent from the speed of the trajectory and the dynamic geometric errors, dependent on the programmed feed rate and resulting from the machine structure deflection during the acceleration of its axes...

Andolfatto, Loïc; Mayer, René

2011-01-01T23:59:59.000Z

44

Open-Source LCA Tool for Estimating Greenhouse Gas Emissions from Crude Oil Production Using Field Characteristics  

Science Journals Connector (OSTI)

Open-Source LCA Tool for Estimating Greenhouse Gas Emissions from Crude Oil Production Using Field Characteristics ... OPGEE models oil production emissions in more detail than previous transport LCA models. ... El-Houjeiri, H. and Brandt, A.Exploring the variation of GHG emissions from conventional oil production using an engineering-based LCA model. ...

Hassan M. El-Houjeiri; Adam R. Brandt; James E. Duffy

2013-05-01T23:59:59.000Z

45

Development of an Open Source Hourly Building Energy Modeling Software Tool.  

E-Print Network (OSTI)

??Computer building energy simulations are an important tool in the design of low-energy buildings. Building energy modeling is used to predict annual energy consumption, determine… (more)

Hanam, Brittany

2010-01-01T23:59:59.000Z

46

Development of a tool dedicated to the evaluation of hydrogen term source for technological Wastes: assumptions, physical models, and validation  

SciTech Connect

In radioactive waste packages hydrogen is generated, in one hand, from the radiolysis of wastes (mainly organic materials) and, in the other hand, from the radiolysis of water content in the cement matrix. In order to assess hydrogen generation 2 tools based on operational models have been developed. One is dedicated to the determination of the hydrogen source term issues from the radiolysis of the wastes: the STORAGE tool (Simulation Tool Of Emission Radiolysis Gas), the other deals with the hydrogen source term gas, produced by radiolysis of the cement matrices (the Damar tool). The approach used by the STORAGE tool for assessing the production rate of radiolysis gases is divided into five steps: 1) Specification of the data packages, in particular, inventories and radiological materials defined for a package medium; 2) Determination of radiochemical yields for the different constituents and the laws of behavior associated, this determination of radiochemical yields is made from the PRELOG database in which radiochemical yields in different irradiation conditions have been compiled; 3) Definition of hypothesis concerning the composition and the distribution of contamination inside the package to allow assessment of the power absorbed by the constituents; 4) Sum-up of all the contributions; And finally, 5) validation calculations by comparison with a reduced sampling of packages. Comparisons with measured values confirm the conservative character of the methodology and give confidence in the safety margins for safety analysis report.

Lamouroux, C. [CEA Saclay, Nuclear Energy Division /DANS, Department of physico-chemistry, 91191 Gif sur yvette (France); Esnouf, S. [CEA Saclay, DSM/IRAMIS/SIS2M/Radiolysis Laboratory , 91191 Gif sur yvette (France); Cochin, F. [Areva NC,recycling BU, DIRP/RDP tour Areva, 92084 Paris La Defense (France)

2013-07-01T23:59:59.000Z

47

Extending Ion Source Life on High Current Ion Implant Tools with In-Situ Chemical Cleaning  

SciTech Connect

Ion source replacement is generally the most frequent maintenance activity on an ion implanter impacting both productivity and consumable costs. In this paper we review the different mechanisms responsible for ion source failure. We report on in-situ chemical cleaning tests conducted at Toshiba Oita, which have shown potential for significant extension in source life. Several factors impact the effectiveness of xenon difluoride including failure modes, cleaning time and flow rates.

Uvais, A.; Botet, A. [ATMI, Danbury, CT (United States); Jinguji, M.; Sato, Y.; Yotsumoto, T. [Toshiba Corporation, Oita (Japan)

2011-01-07T23:59:59.000Z

48

Seismo?Acoustic Energy Partitioning at Near?Source and Local Distances from the 2011 Sayarim Explosions in the Negev Desert, Israel  

Science Journals Connector (OSTI)

...already begun. In the 2007 and 2009 HUMBLE REDWOOD (HR) I and II experiments...and C. Snelson (2010). The HUMBLE REDWOOD seismic/acoustic coupling experiments...A. L. Ramirez (2008). The HUMBLE REDWOOD Seismic/acoustic coupling experiments...

Jessie Bonner; Roger Waxler; Yefim Gitterman; Rami Hofstetter

49

A numerical simulation tool for multilayer grounding analysis integrated in an open-source CAD interface  

E-Print Network (OSTI)

of the challenges of the electrical engineers and designers since the beginning of the large-scale harnessing-source platform 1. Introduction Obtaining the distribution of potential levels of an earthing system has been one of electricity. Thus, the grounded electrode dissipates the electrical currents generated during a fault

Colominas, Ignasi

50

Method and apparatus of spectro-acoustically enhanced ultrasonic detection for diagnostics  

DOE Patents (OSTI)

An apparatus for detecting a discontinuity in a material includes a source of electromagnetic radiation has a wavelength and an intensity sufficient to induce an enhancement in contrast between a manifestation of an acoustic property in the material and of the acoustic property in the discontinuity, as compared to when the material is not irradiated by the electromagnetic radiation. An acoustic emitter directs acoustic waves to the discontinuity in the material. The acoustic waves have a sensitivity to the acoustic property. An acoustic receiver receives the acoustic waves generated by the acoustic emitter after the acoustic waves have interacted with the material and the discontinuity. The acoustic receiver also generates a signal representative of the acoustic waves received by the acoustic receiver. A processor, in communication with the acoustic receiver and responsive to the signal generated by the acoustic receiver, is programmed to generate informational output about the discontinuity based on the signal generated by the acoustic receiver.

Vo-Dinh, Tuan (Knoxville, TN); Norton, Stephen J. (Raleigh, NC)

2001-01-01T23:59:59.000Z

51

E-Print Network 3.0 - acoustic measuring instruments Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

text... III Center for Computer Research in Music and Acoustics (CCRMA) ... Source: Smith III, Julius Orion - Center for Computer Research in Music and Acoustics, Stanford...

52

E-Print Network 3.0 - acoustic tiltedti media Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Follow geometry and physical properties of a desired acoustic system Efficient Source: Smith III, Julius Orion - Center for Computer Research in Music and Acoustics, Stanford...

53

Hybrid Ground-Source Heat Pump Installations: Experiences, Improvements, and Tools  

SciTech Connect

One innovation to ground-source heat pump (GSHP, or GHP) systems is the hybrid GSHP (HyGSHP) system, which can dramatically decrease the first cost of GSHP systems by using conventional technology (such as a cooling tower or a boiler) to meet a portion of the peak heating or cooling load. This work uses three case studies (two cooling-dominated, one heating-dominated) to demonstrate the performance of the hybrid approach. Three buildings were studied for a year; the measured data was used to validate models of each system. The models were used to analyze further improvements to the hybrid approach, and establish that this approach has positive impacts, both economically and environmentally. Lessons learned by those who design and operate the systems are also documented, including discussions of equipment sizing, pump operation, and cooling tower control. Finally, the measured data sets and models that were created during this work are described; these materials have been made freely available for further study of hybrid systems.

Scott Hackel; Amanda Pertzborn

2011-06-30T23:59:59.000Z

54

Architectural acoustics  

Science Journals Connector (OSTI)

This tutorial will familiarize people with basic concepts in architectural acoustics. Many slides of actual buildings and a brief audio tape will be used to illustrate connections between the visual appearance of buildings and the qualities of their sonic environment. The presentation will provide examples and explanations of common acoustic experiences in buildings with the under?lying reasons for their occurrence. Architectural acoustics can be characterized as an evolving empirical exploration of basic principles from many areas of acoustics through creative testing in the design and subsequent evaluation of buildings. A historical review of applied acoustical principles translated into the medium of architecture will be presented in four primary areas: (1) subjective impressions including qualities of music speech intelligibility and annoyance which are the basis for current design criteria; (2) room acoustics design with an emphasis on auditoria schools restaurants and other public buildings; (3) providing privacy from unwanted sounds and vibrations through discussion of standard measurement techniques such as sound transmission class (STC); and (4) management of noise from HVAC systems and other equipment and processes in buildings. Interesting case studies will demonstrate how complex the practical application of even relatively simple acoustical principles can be in many buildings. In recent years a significant community of laboratory and applied researchers dedicated to this field has emerged to question and quantify the empirical knowledge base that has been accumulated over time. Recent topics of interest such as new measurement modeling and simulation techniques will be briefly introduced.

Gary W. Siebein

1994-01-01T23:59:59.000Z

55

Wireless technology and library acoustics  

Science Journals Connector (OSTI)

The modern library cannot function without modern technology. Printers copiers wireless computers and espresso machines all contribute to the soundscape of the typical municipal library (and many academic libraries too). While some of these noise sources are stationary and can be isolated acoustically wireless computing has transformed the acoustic experience for the typical library patron. Study carrels and desks used to define the boundaries of study and work areas in libraries and architects could design spaces accordingly. With wireless technology every space is a study space. This paper will discuss the implications of wireless technology on library acoustics. Measurement results at a variety of case study libraries will be presented.

2006-01-01T23:59:59.000Z

56

13.853 Computational Ocean Acoustics, Spring 2003  

E-Print Network (OSTI)

Wave equations for fluid and visco-elastic media. Wave-theory formulations of acoustic source radiation and seismo-acoustic propagation in stratified ocean waveguides. Wavenumber Integration and Normal Mode methods for ...

Schmidt, Henrik

57

Acoustics education in Ukraine  

Science Journals Connector (OSTI)

Acoustics education in Ukraine is considered. In more than 40 universities students learn acoustics: in the acoustics department of the National Technical University in Ukraine (only one department in Ukraine) and many related departments such as Nondestructive Testing Physics Electrical Engineering etc. Acoustical specializations of departments are presented. The most promising and developing acoustical specialization is biomedical acoustics.

Stanislav M. Mayevskyy; Leonid M. Gelman

1999-01-01T23:59:59.000Z

58

Apparatus for separating particles utilizing engineered acoustic contrast capture particles  

DOE Patents (OSTI)

An apparatus for separating particles from a medium includes a capillary defining a flow path therein that is in fluid communication with a medium source. The medium source includes engineered acoustic contrast capture particle having a predetermined acoustic contrast. The apparatus includes a vibration generator that is operable to produce at least one acoustic field within the flow path. The acoustic field produces a force potential minima for positive acoustic contrast particles and a force potential minima for negative acoustic contrast particles in the flow path and drives the engineered acoustic contrast capture particles to either the force potential minima for positive acoustic contrast particles or the force potential minima for negative acoustic contrast particles.

Kaduchak, Gregory (Los Alamos, NM); Ward, Michael D. (Los Alamos, NM)

2011-12-27T23:59:59.000Z

59

Apparatus for separating particles utilizing engineered acoustic contrast capture particles  

DOE Patents (OSTI)

An apparatus for separating particles from a medium includes a capillary defining a flow path therein that is in fluid communication with a medium source. The medium source includes engineered acoustic contrast capture particle having a predetermined acoustic contrast. The apparatus includes a vibration generator that is operable to produce at least one acoustic field within the flow path. The acoustic field produces a force potential minima for positive acoustic contrast particles and a force potential minima for negative acoustic contrast particles in the flow path and drives the engineered acoustic contrast capture particles to either the force potential minima for positive acoustic contrast particles or the force potential minima for negative acoustic contrast particles.

Kaduchak, Gregory; Ward, Michael D

2014-10-21T23:59:59.000Z

60

Design and Development of a Nanoscale Multi Probe System Using Open Source SPM Controller and GXSM Software: A Tool of Nanotechnology  

E-Print Network (OSTI)

We report our design, development, installation and troubleshooting of an open source Gnome X Scanning Microscopy (GXSM) software package for controlling and processing of modern Scanning Probe Microscopy (SPM) system as a development tool of Nanotechnology. GXSM is a full featured analysis tool for the characterization of nanomaterials with different controlling tools like Atomic Force Microscopy (AFM), Scanning Tunneling Spectroscopy (STS), scanning tunneling microscopy (STM), Nanoindentation and etc.,. This developed package tool consists of Digital Signal Processing (DSP) and image processing system of SPM. A digital signal processor (DSP) subsystem runs the feedback loop, generates the scanning signals and acquires the data during SPM measurements. With installed SR-Hwl plug-in this developed package was tested in no hardware mode.

Babu, S K Suresh; Moni, D Jackuline; Devaprakasam, D

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Acoustic concentration of particles in fluid flow  

SciTech Connect

An apparatus for acoustic concentration of particles in a fluid flow includes a substantially acoustically transparent membrane and a vibration generator that define a fluid flow path therebetween. The fluid flow path is in fluid communication with a fluid source and a fluid outlet and the vibration generator is disposed adjacent the fluid flow path and is capable of producing an acoustic field in the fluid flow path. The acoustic field produces at least one pressure minima in the fluid flow path at a predetermined location within the fluid flow path and forces predetermined particles in the fluid flow path to the at least one pressure minima.

Ward, Michael D. (Los Alamos, NM); Kaduchak, Gregory (Los Alamos, NM)

2010-11-23T23:59:59.000Z

62

NEPA COMPLIANCE SURVEY Project Information Project Title: Express Stack Tools  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Express Stack Tools Express Stack Tools Date: 11/16/2010 DOE Code: 6730.020.81023 Contractor Code: 8067-971 Project Lead: Brian Black Project Overview 1) This project will test open and cased Hole logging tools in multiple wells. The tools to be testied include: 1. Brief project description [include anything that could impact the natural gamma, borehole temperature, compensated neutron, compensated density with PE, dual environment] induction/short guard, neutron prompt gamma, and acoustic televiewer tool. Radioactive sources will be run in the well as part of the toolstring. 2. Legal location 3. Duration of the project 2) 48-X-28 well location, SE %, SW %, Tsp 39N Rng 78W, Section 28; 45::3-X-21 well location, NE %, SW 4. Major equipment to be used %, Tsp 39N, Rng 78W, Section 21; 46-TpX-10 well location, NE %, SW Y.., Tsp38N, Rng 78W, Section 10.

63

Acoustic plug release indicator  

SciTech Connect

The present invention comprises an acoustic plug release indicator system. The acoustic plug release indicatior system comprises a microphone, recording system and operator listening device.

Carter, E.E. Jr.

1984-09-04T23:59:59.000Z

64

Measurement of Acoustic Impedance  

Science Journals Connector (OSTI)

The acoustic impedance of a sample of material forming one boundary of a shallow cylindrical cavity can be determined by measuring the sound pressure produced when a known volume current is injected into the cavity from a high impedance source. The volume current is effectively determined by observing the pressure when the cavity is terminated rigidly. An impedance determination is thus reduced to measurement of the complex ratio of two observed voltages. By designing a ring source to suppress the first radial mode of the cavity the upper frequency limit set by uniformity of pressure distribution is extended by at least an octave. By avoiding leaks measurements can also be extended to very low frequencies. Secondary effects due to finite source impedance viscosity and heat losses at the walls have been evaluated. The method appears to be simple rapid and precise.

O. K. El?Mawardi

1948-01-01T23:59:59.000Z

65

Kolmogorov–Smirnov test as a tool to study the distribution of ultra-high energy cosmic ray sources  

Science Journals Connector (OSTI)

......distribution of ultra-high energy cosmic ray sources D. Harari...Bustillo 9500, Bariloche, 8400 Argentina We analyse in detail the two-dimensional...sources of the ultra-high energy cosmic rays. We confront...rays (CRs) is the enormous energies they can reach, which can......

D. Harari; S. Mollerach; E. Roulet

2009-04-01T23:59:59.000Z

66

Acoustic transducer  

DOE Patents (OSTI)

An acoustic transducer is described comprising a one-piece hollow mandrel into the outer surface of which is formed a recess with sides perpendicular to the central axis of the mandrel and separated by a first distance and with a bottom parallel to the central axis and within which recess are a plurality of washer-shaped discs of a piezoelectric material and at least one disc of a temperature-compensating material with the discs being captured between the sides of the recess in a pre-stressed interference fit, typically at 2,000 psi of compressive stress. The transducer also includes a power supply and means to connect to a measurement device. The transducer is intended to be used for telemetry between a measurement device located downhole in an oil or gas well and the surface. The transducer is of an construction that is stronger with fewer joints that could leak fluids into the recess holding the piezoelectric elements than is found in previous acoustic transducers. 4 figs.

Drumheller, D.S.

1997-12-30T23:59:59.000Z

67

Acoustic transducer  

DOE Patents (OSTI)

An acoustic transducer comprising a one-piece hollow mandrel into the outer surface of which is formed a recess with sides perpendicular to the central axis of the mandrel and separated by a first distance and with a bottom parallel to the central axis and within which recess are a plurality of washer-shaped discs of a piezoelectric material and at least one disc of a temperature-compensating material with the discs being captured between the sides of the recess in a pre-stressed interference fit, typically at 2000 psi of compressive stress. The transducer also includes a power supply and means to connect to a measurement device. The transducer is intended to be used for telemetry between a measurement device located downhole in an oil or gas well and the surface. The transducer is of an construction that is stronger with fewer joints that could leak fluids into the recess holding the piezoelectric elements than is found in previous acoustic transducers.

Drumheller, Douglas S. (Cedar Crest, NM)

1997-01-01T23:59:59.000Z

68

Title Slide "The broadband acoustic output of  

E-Print Network (OSTI)

Title Slide "The broadband acoustic output of marine seismic airgun sources" Les Hatton CISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . #12;Seismic sources ­ marine airguns Introduction Modelling Marine Life Impact Where next Overview #12 Normal speed surface movie of airgun firing Courtesy IO limited #12;Seismic sources ­ marine airguns

Hatton, Les

69

Further applications of time?frequency methods in acoustics  

Science Journals Connector (OSTI)

Time?frequency (t?f) methods have been repeatedly established as effective tools to successfully analyze a variety of signatures from many types of sources or scatterers. Many such signatures have been acoustic in nature and we have studied these most extensively in the past. We have presented several of these examples before [viz. G. C. Gaunaurd and H. C. Strifors J. Acoust. Soc. Am. 104 1746 136th ASA Mtg. (1998)]. Here we will cover acoustical applications that we have analyzed but which were not adequately covered in 1998. We will also outline additional ones—more extensively discussed in Appl. Mech. Rev. 50 131–149 (1997)—and a recent radar application [i.e. ibid. IEEE Trans. Antennas Propag. 46 1252–1262 (1998)]. In this case the present t?f processing was shown capable of successfully identifying an air target that had been covered with a dielectric RCS?reducing layer. We believe that this general approach jointly with the way we have used it to physically interpret broadband sonar/radar signatures can lead to straightforward implementations for many practical target?classification problems associated with many types of sensors. [Work partially supported by the ILIR Program of the authors’ Institutions and the ONR.

G. C. Gaunaurd; H. C. Strifors

1999-01-01T23:59:59.000Z

70

Building Energy Software Tools Directory: Tools by Subject - Other  

NLE Websites -- All DOE Office Websites (Extended Search)

Misc Applications Misc Applications A B C D E F G I K L M O P Q R S T U Tool Applications Free Recently Updated ACOUSALLE acoustics, codes and standards AcousticCalc HVAC acoustics, sound level prediction, noise level Acoustics Program HVAC acoustics, sound level prediction, noise level Software has been updated. AEPS System Planning electrical system, renewable energy system, planning and design software, modeling, simulation, energy usage, system performance, financial analysis, solar, wind, hydro, behavior characteristics, usage profiles, generation load storage calculations, on-grid, off-grid, residential, commercial, system sizing, utility rate plans, rate comparison, utility costs, energy savings Software has been updated. Animate animated visualization of data, XY graphs, energy-use data

71

Building Energy Software Tools Directory: Tools by Platform - PC  

NLE Websites -- All DOE Office Websites (Extended Search)

PC PC 1 3 A B C D E F G H I J K L M N O P Q R S T U V W Z ¡ Tool Applications Free Recently Updated 1D-HAM heat, air, moisture transport, walls Software has been updated. 3E Plus insulation, insulation thickness Free software. Software has been updated. AAMASKY skylights, daylighting, commercial buildings ABACODE Residential code compliance, IECC Free software. ACOUSALLE acoustics, codes and standards AcousticCalc HVAC acoustics, sound level prediction, noise level Acoustics Program HVAC acoustics, sound level prediction, noise level Software has been updated. Acuity Energy Platform energy efficiency software; customized business recommendation; commercial and industrial energy use comparisons Software has been updated. ADELINE

72

Acoustic cryocooler  

DOE Patents (OSTI)

An acoustic cryocooler with no moving parts is formed from a thermoacoustic driver (TAD) driving a pulse tube refrigerator (PTR) through a standing wave tube. Thermoacoustic elements in the TAD are spaced apart a distance effective to accommodate the increased thermal penetration length arising from the relatively low TAD operating frequency in the range of 15-60 Hz. At these low operating frequencies, a long tube is required to support the standing wave. The tube may be coiled to reduce the overall length of the cryocooler. One or two PTR's are located on the standing wave tube adjacent antinodes in the standing wave to be driven by the standing wave pressure oscillations. It is predicted that a heat input of 1000 W at 1000 K will maintian a cooling load of 5 W at 80 K.

Swift, Gregory W. (Santa Fe, NM); Martin, Richard A. (Los Alamos, NM); Radenbaugh, Ray (Louisville, CO)

1990-01-01T23:59:59.000Z

73

Using Local and Regional Air Quality Modeling and Source Apportionment Tools to Evaluate Vehicles and Biogenic Emission Factors  

E-Print Network (OSTI)

and inventories of CO, NO_(x) and VOCs from on-road vehicles estimated by vehicle emission factor models and biogenic emissions of isoprene estimated by a popular biogenic emission model are evaluated using local and regional scale air quality modeling and source...

Kota, Sri H

2014-07-25T23:59:59.000Z

74

September 2009 Using acoustic tools in forestry  

E-Print Network (OSTI)

of end uses ­ ranging from construction timber to raw materials for the bioenergy sector. In 2008 are processed into construction timber. This is a key market given its current size (approximately 6 million m3

75

Preliminary Verification and Validation of WEC-Sim, an Open-Source Wave Energy Converter Design Tool: Preprint  

SciTech Connect

To promote and support the wave energy industry, a wave energy converter (WEC) design tool, WEC-Sim, is being developed by Sandia National Laboratories and the National Renewable Energy Laboratory. In this paper, the WEC-Sim code is used to model a point absorber WEC designed by the U.S. Department of Energy's reference model project. Preliminary verification was performed by comparing results of the WEC-Sim simulation through a code-to-code comparison, utilizing the commercial codes ANSYS-AQWA, WaveDyn, and OrcaFlex. A preliminary validation of the code was also performed by comparing WEC-Sim simulation results to experimental wave tank tests.

Ruehl, K.; Michelen, C.; Kanner, S.; Lawson, M.; Yu, Y. H.

2014-03-01T23:59:59.000Z

76

Acoustic demonstrations for education in speech science  

Science Journals Connector (OSTI)

Acoustic demonstrations are highly effective for education in speech science. We recently developed two educational tools for acoustics. The first educational tool is a set of physical models of the human vocal tract and related models. It contains cylinder and plate?type models [T. Arai J. Phonetic Soc. Jpn. 5(2) 31–38 (2001)] a sliding three?tube model [T. Arai Acoust. Sci. Technol. to be published] lungmodels an artificial larynx and head?shaped models [T. Arai Acoust. Sci. Technol. 27(2) 111–113 (2006)]. Each model has its own advantages and if combined effectively can produce a systematic and comprehensive education in speech production from the lungs to the head. The second educational tool is ‘‘Digital Pattern Playback (DPP)’’ [T. Arai et al. Acoust. Sci. Tech. to be published] which converts a spectrographic image of a speech signal back to sound by digital signal processing. A printed spectrogram on a sheet of paper can also be converted immediately after capturing the image from a camera and we confirmed that this is more intuitive for learners than converting from an electronic image. [Work partially supported by JSPS.KAKENHI (17500603).

2006-01-01T23:59:59.000Z

77

Acoustic Based Sketch Recognition  

E-Print Network (OSTI)

investigate this new area, which we call acoustic based sketch recognition, and evaluate the possibilities of using it as a new interaction technique. We focus specifically on building a recognition engine for acoustic sketch recognition. We first propose a...

Li, Wenzhe

2012-10-19T23:59:59.000Z

78

Device and method for generating a beam of acoustic energy from a borehole, and applications thereof  

DOE Patents (OSTI)

In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first acoustic wave at a first frequency; generating a second acoustic wave at a second frequency different than the first frequency, wherein the first acoustic wave and second acoustic wave are generated by at least one transducer carried by a tool located within the borehole; transmitting the first and the second acoustic waves into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated beam by a non-linear mixing of the first and second acoustic waves, wherein the collimated beam has a frequency based upon a difference between the first frequency and the second frequency; and transmitting the collimated beam through a diverging acoustic lens to compensate for a refractive effect caused by the curvature of the borehole.

Vu, Cung Khac; Sinha, Dipen N; Pantea, Cristian; Nihei, Kurt T; Schmitt, Denis P; Skelt, Christopher

2013-10-01T23:59:59.000Z

79

Acoustic-emission monitoring during hydraulic fracturing  

SciTech Connect

This paper reports that microseismic events or acoustic emissions associated with hydraulic fracturing are recorded with a borehole seismic tool in a deviated well during multirate injection, shut-in, and flowback. The event locations indicate that fracture orientation, length, and height are compatible with regional stress directions and estimates of the fracture size that are based on pressure decline.

Stewart, L. (Schlumberger-Doll Research (US)); Cassell, B.R. (Schlumberger Wireline Services (US)); Bol, G.M. (Nederlanse Aardolie Mij. B.V. (NL))

1992-06-01T23:59:59.000Z

80

Building Energy Software Tools Directory: Tools by Subject - Materials  

NLE Websites -- All DOE Office Websites (Extended Search)

Hvac Systems Hvac Systems 3 A B C D E F G H I J K L M N O P Q R S T V Tool Applications Free Recently Updated 3E Plus insulation, insulation thickness Free software. Software has been updated. AcousticCalc HVAC acoustics, sound level prediction, noise level Acoustics Program HVAC acoustics, sound level prediction, noise level Software has been updated. AFT Fathom design, pump selection, pipe analysis, duct design, duct sizing, chilled water systems, hot water system Software has been updated. AFT Mercury optimization, pipe optimization, pump selection, duct design, duct sizing, chilled water systems, hot water systems AIRWIND Pro Air Conditioning Load Calculation Analysis Platform heating, cooling, and SWH equipment, commercial buildings

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

The Open Source Stochastic Building Simulation Tool SLBM and Its Capabilities to Capture Uncertainty of Policymaking in the U.S. Building Sector  

SciTech Connect

The increasing concern about climate change as well as the expected direct environmental economic impacts of global warming will put considerable constraints on the US building sector, which consumes roughly 48percent of the total primary energy, making it the biggest single source of CO2 emissions. It is obvious that the battle against climate change can only be won by considering innovative building approaches and consumer behaviors and bringing new, effective low carbon technologies to the building / consumer market. However, the limited time given to mitigate climate change is unforgiving to misled research and / or policy. This is the reason why Lawrence Berkeley National Lab is working on an open source long range Stochastic Lite Building Module (SLBM) to estimate the impact of different policies and consumer behavior on the market penetration of low carbon building technologies. SLBM is designed to be a fast running, user-friendly model that analysts can readily run and modify in its entirety through a visual interface. The tool is fundamentally an engineering-economic model with technology adoption decisions based on cost and energy performance characteristics of competing technologies. It also incorporates consumer preferences and passive building systems as well as interactions between technologies (such as internal heat gains). Furthermore, everything is based on service demand, e.g. a certain temperature or luminous intensity, instead of energy intensities. The core objectives of this paper are to demonstrate the practical approach used, to start a discussion process between relevant stakeholders and to build collaborations.

Stadler, Michael; Marnay, Chris; Azevedo, Ines Lima; Komiyama, Ryoichi; Lai, Judy

2009-05-14T23:59:59.000Z

82

Parametric acoustic arrays: A Bergen view.  

Science Journals Connector (OSTI)

At the University of Bergen (UoB) Norway research activity in physical acoustics started in the mid?1960s with investigations on the parametric acoustic array (PAA). The newly appointed professor in applied mathematics Sigve Tjo/tta had some years earlier been at Brown University and was inspired by the concept at a fundamental level but also wanted experimental confirmation. No previous acoustical activity existed at UoB. The PAA project was started as a master project at Department of Physics where the main activity was in nuclear high?energy and ionospheric physics. Bellin and Beyer’s experiment served as a model. The results provided new information on the axial and directional properties of the difference frequency wave field. Inspired by this theoretical modeling continued along with further measurements. Other nonlinear effects like acoustic streaming (boundary layer density gradient) were also investigated. In 1975 a project together with SIMRAD and Norwegian Technical University resulted in a bottom penetrating PAA later commercialized as “TOPAS.” Numerical modeling based on the KZK equation resulted in the “Bergen Code ” still in use for computing nonlinear acoustic propagation problems. In later years activity at UoB has expanded to encompass linear physical acoustics of various sorts occasionally using PAA as a tool.

2009-01-01T23:59:59.000Z

83

Acoustics as a Human Science  

Science Journals Connector (OSTI)

There was a time when acoustics was only a human science but this changed as philosophers learned to use mathematical and other measurement tools for ordering and validating their thought processes. This century has seen many changes in the description of the field as a whole and the human aspects continue to be among the most perplexing. The highlights of accomplishments to date some observations on our current status of knowledge and some projections into the future are presented for your entertainment—if not for your information.

S. S. Stevens

1972-01-01T23:59:59.000Z

84

A decade of acoustic thermometry in the North Pacific Ocean  

E-Print Network (OSTI)

A decade of acoustic thermometry in the North Pacific Ocean B. D. Dushaw,1 P. F. Worcester,2 W. H of acoustic thermometry in the North Pacific Ocean, J. Geophys. Res., 114, C07021, doi:10.1029/2008JC005124. 1 of basin-scale heat content in the northeast Pacific Ocean were made using a broadband 133-Hz source

Frandsen, Jannette B.

85

E-Print Network 3.0 - acoustically controlled tetherless Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

an issue or even a controllable parameter.) Delay... , Goldstar, and Univ. of California MICRO Grant 94-052. Prof. IEEE Int. Conf. on Acoustics, Speech Source: Messerschmitt,...

86

E-Print Network 3.0 - acoustic impedance Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

, the termination impedance of a tube is called radiation impedance. The acoustic radiation impedance of a tube... ... Source: Ecole Polytechnique, Centre de mathmatiques...

87

E-Print Network 3.0 - acoustic holography based Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

ACOUSTIC... HOLOGRAPHY R. K. MUELLER Bendix Research Laboratories South Field, Michigan 48 075 U. S. A. RBsumB. -Le Source: Ecole Polytechnique, Centre de mathmatiques...

88

E-Print Network 3.0 - acoustic radiation Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Colloque C5,supplementau Journalde Physique 111, Volume4, mai 1994 Summary: and the identification of equivalent distribution of acoustic elementary sources on the radiator...

89

E-Print Network 3.0 - airborne acoustical noise Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

and lidar sensors. Consequently, the methodology for instru- ment calibration, noise reduction... in the data processing sequence. For an acoustic system, ambient ... Source:...

90

E-Print Network 3.0 - acoustic wave based Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

and inversion of seismo-acoustic waves in a complex... ., "Excitation and propagation of interface waves in a stratified sea- bed," in ... Source: Leonard, John J. - Computer...

91

E-Print Network 3.0 - acoustic emission spectroscopy Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

have shown how the dynamics of moving... which we call diffusing reverberant acoustic ... Source: Page, John - Department of Physics and Astronomy, University of Manitoba...

92

E-Print Network 3.0 - acoustic wave theory Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

shallow water internal waves on acoustic... - and strong-scattering theories for random media would ... Source: Oregon State University, College of Oceanic and Atmospheric...

93

E-Print Network 3.0 - acoustic wave propagation Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

N... .Schmidt, H., "Propagation of seismic and acoustic waves in horizontally stratified media... wave-number-integration approach to ... Source: Leonard, John J. - Computer...

94

E-Print Network 3.0 - acoustic decay instability Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

is measured using a photo... motion and assuming conservation of classical acoustic energy within the burner. In keeping with other Source: Marusic, Ivan - Department of...

95

Acoustics by additive manufacturing:.  

E-Print Network (OSTI)

??This study focuses on exploring the merging field of additive manufacturing and acoustics and introduces a new type of sound absorber which is regulating performance… (more)

Setaki, F.

2012-01-01T23:59:59.000Z

96

Monitoring Thermal Fatigue Damage In Nuclear Power Plant Materials Using Acoustic Emission  

SciTech Connect

Proactive aging management of nuclear power plant passive components requires technologies to enable monitoring and accurate quantification of material condition at early stages of degradation (i.e., pre-macrocrack). Acoustic emission (AE) is well-suited to continuous monitoring of component degradation and is proposed as a method to monitor degradation during accelerated thermal fatigue tests. A key consideration is the ability to separate degradation responses from external sources such as water spray induced during thermal fatigue testing. Water spray provides a significant background of acoustic signals, which can overwhelm AE signals caused by degradation. Analysis of AE signal frequency and energy is proposed in this work as a means for separating degradation signals from background sources. Encouraging results were obtained by applying both frequency and energy filters to preliminary data. The analysis of signals filtered using frequency and energy provides signatures exhibiting several characteristics that are consistent with degradation accumulation in materials. Future work is planned to enable verification of the efficacy of AE for thermal fatigue crack initiation detection. While the emphasis has been placed on the use of AE for crack initiation detection during accelerated aging tests, this work also has implications with respect to the use of AE as a primary tool for early degradation monitoring in nuclear power plant materials. The development of NDE tools for characterization of aging in materials can also benefit from the use of a technology such as AE which can continuously monitor and detect crack initiation during accelerated aging tests.

Meyer, Ryan M.; Ramuhalli, Pradeep; Watson, Bruce E.; Pitman, Stan G.; Roosendaal, Timothy J.; Bond, Leonard J.

2012-04-26T23:59:59.000Z

97

Argonne Acoustic Levitation Video Goes Viral  

NLE Websites -- All DOE Office Websites (Extended Search)

"Inside the Advanced Photon Source" Inside the latest Argonne Now "Inside the Advanced Photon Source" Inside the latest Argonne Now APS Director Stephenson Named Argonne Distinguished Fellow Advanced Photon Source, Canadian Light Source Strengthen Ties, Expand X-ray Technology and Research Rose of APS and CNM One of Four DOE Early Career Award Winners Scientists Close-In on Artificial Spider Silk APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Argonne Acoustic Levitation Video Goes Viral SEPTEMBER 25, 2012 Bookmark and Share Drops of solution being suspended for a long period of time, thanks to the vibrational force of sound waves that keep them stationary in an air column. More than 41,000 Google hits for "acoustic levitation Argonne" as of

98

Acoustic Heating Peter Ulmschneider  

E-Print Network (OSTI)

Acoustic Heating Peter Ulmschneider lnstitut fiir Theoretische Astrophysik der Universitat waves are a viable and prevalent heating mechanism both in early- and in late-type stars. Acoustic heating appears to be a dominant mechanism for situations where magnetic fields are weak or absent

Ulmschneider, Peter

99

Development of a geothermal acoustic borehole televiewer  

SciTech Connect

Most geothermal wells are drilled in hard rock formations where fluid flow is through systems of open fractures. Productivity of these wells is usually determined by the extent of intersection of the wellbore with the fracture system. A need exists for fracture mapping methods and tools which can operate in a geothermal environment. In less hostile environments, the acoustic borehole televiewer has been shown to be a useful tool for determining location, orientation, and characterization of fractures as they intersect the borehole and for general wellbore and casing inspection. The development conducted at Sandia National Laboratories to adapt an acoustic borehole televiewer for operation in a geothermal environment is described. The modified instrument has been successfully tested at temperatures as high as 280/sup 0/C and pressures up to 5000 psi, and used successfully to map fractures and casing damage in geothermal wells.

Heard, F.E.; Bauman, T.J.

1983-08-01T23:59:59.000Z

100

Distributed Acoustic and Seismic Sensing  

Science Journals Connector (OSTI)

An overview of fiber optic distributed acoustic and seismic sensor system architectures is presented.

Kirkendall, Clay

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Acoustic cooling engine  

DOE Patents (OSTI)

An acoustic cooling engine with improved thermal performance and reduced internal losses comprises a compressible fluid contained in a resonant pressure vessel. The fluid has a substantial thermal expansion coefficient and is capable of supporting an acoustic standing wave. A thermodynamic element has first and second ends and is located in the resonant pressure vessel in thermal communication with the fluid. The thermal response of the thermodynamic element to the acoustic standing wave pumps heat from the second end to the first end. The thermodynamic element permits substantial flow of the fluid through the thermodynamic element. An acoustic driver cyclically drives the fluid with an acoustic standing wave. The driver is at a location of maximum acoustic impedance in the resonant pressure vessel and proximate the first end of the thermodynamic element. A hot heat exchanger is adjacent to and in thermal communication with the first end of the thermodynamic element. The hot heat exchanger conducts heat from the first end to portions of the resonant pressure vessel proximate the hot heat exchanger. The hot heat exchanger permits substantial flow of the fluid through the hot heat exchanger. The resonant pressure vessel can include a housing less than one quarter wavelength in length coupled to a reservoir. The housing can include a reduced diameter portion communicating with the reservoir. The frequency of the acoustic driver can be continuously controlled so as to maintain resonance.

Hofler, Thomas J. (Los Alamos, NM); Wheatley, John C. (Los Alamos, NM); Swift, Gregory W. (Santa Fe, NM); Migliori, Albert (Santa Fe, NM)

1988-01-01T23:59:59.000Z

102

Acoustic well cleaner  

DOE Patents (OSTI)

A method and apparatus are disclosed for cleaning the wellbore and the near wellbore region. A sonde is provided which is adapted to be lowered into a borehole and which includes a plurality of acoustic transducers arranged around the sonde. Electrical power provided by a cable is converted to acoustic energy. The high intensity acoustic energy directed to the borehole wall and into the near wellbore region, redissolves or resuspends the material which is reducing the permeability of the formation and/or restricting flow in the wellbore.

Maki, Jr., Voldi E. (11904 Bell Ave., Austin, TX 78759-2415); Sharma, Mukul M. (Dept. of Petroleum Engr. Univ. of Texas, Austin, TX 78712)

1997-01-21T23:59:59.000Z

103

Acoustical heat pumping engine  

DOE Patents (OSTI)

The disclosure is directed to an acoustical heat pumping engine without moving seals. A tubular housing holds a compressible fluid capable of supporting an acoustical standing wave. An acoustical driver is disposed at one end of the housing and the other end is capped. A second thermodynamic medium is disposed in the housing near to but spaced from the capped end. Heat is pumped along the second thermodynamic medium toward the capped end as a consequence both of the pressure oscillation due to the driver and imperfect thermal contact between the fluid and the second thermodynamic medium. 2 figs.

Wheatley, J.C.; Swift, G.W.; Migliori, A.

1983-08-16T23:59:59.000Z

104

History of engineering acoustics  

Science Journals Connector (OSTI)

At the Providence RI meeting in December 1955 it was proposed to add three new technical committees to the original seven established about a year earlier. Two of the new ones Audio Engineering and Electroacoustics and Sonic and Ultrasonic Engineering are precursors of the present Engineering Acoustics Technical Committee. In 1961 the name of the former committee was shortened to Electroacoustics and I began to attend their meetings. In 1964 the scope of the committee was broadened and its present name of Engineering Acoustics adopted. Early repeatable experiments in engineering acoustics have been attributed to Benjamin Franklin and mostly anecdotal evidence exists before that. Modern developments involve interdisciplinary involvements with all acoustics and specifically with the discovery of new materials applications of their properties and inventions of a wide variety of devices for producing receiving and using acoustics. Henry Joule Bell Berliner Edison the Curie brothers DeForest and Fessenden will be among those noted with some related recognition of them by the Engineering Acoustics TC.

Stanley L. Ehrlich

2000-01-01T23:59:59.000Z

105

Renewable Energy Evaluation Tools  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

RENEWABLE ENERGY RENEWABLE ENERGY EVALUATION TOOLS Andy Walker, PhD PE Principal Engineer, NREL Renewable Energy Round Table May 2, 2012 2 TECHNICAL ASSESSMENT AND SCREENING TOOLS WE USE IN OUR PROJECTS Campus/Base Assessments INFRASTRUCTURE BUILDINGS ASSESSMENT RENEWABLE SUPPLY SIDE VEHICLES & TOOLS Campus/Base Assessments INFRASTRUCTURE BUILDINGS ASSESSMENT RENEWABLE SUPPLY SIDE VEHICLES & TOOLS 9 9 Renewable Energy Technologies Photovoltaics Daylighting Biomass Heat/Power Concentrating Solar Heat/Power Solar Vent Air Preheat Solar Water Heating Wind Power Ground Source Heat Pump Landfill Gas 10 10 Renewable Energy Resources Geographical Information System (GIS) Datasets * NREL Datasets (http://www.nrel.gov/gis/) - solar radiation 10x10 km grid

106

Acoustic pursuit of invisible moving targets by cats  

Science Journals Connector (OSTI)

Head movements evoked by an invisible acoustic target were used as a metric to analyze localization of moving sources of sound in naive cats. The target was presented in the lateral sound field and moved along an arc at constant angular speeds. Head-movement trajectories were characterized by a large-magnitude orienting component that undershot the target and a tracking component elicited by the target during acoustic pursuit. The tracking component was characterized by a succession of stepwise head movements that maintained a relatively close alignment of the median plane of the head with the moving acoustic target.

Ralph E. Beitel

1999-01-01T23:59:59.000Z

107

3D acoustic imaging applied to the Baikal Neutrino Telescope  

E-Print Network (OSTI)

A hydro-acoustic imaging system was tested in a pilot study on distant localization of elements of the Baikal underwater neutrino telescope. For this innovative approach, based on broad band acoustic echo signals and strictly avoiding any active acoustic elements on the telescope, the imaging system was temporarily installed just below the ice surface, while the telescope stayed in its standard position at 1100 m depth. The system comprised an antenna with four acoustic projectors positioned at the corners of a 50 meter square; acoustic pulses were "linear sweep-spread signals" - multiple-modulated wide-band signals (10-22 kHz) of 51.2 s duration. Three large objects (two string buoys and the central electronics module) were localized by the 3D acoustic imaging, with a accuracy of ~0.2 m (along the beam) and ~1.0 m (transverse). We discuss signal forms and parameters necessary for improved 3D acoustic imaging of the telescope, and suggest a layout of a possible stationary bottom based 3D imaging setup. The presented technique may be of interest for neutrino telescopes of km3-scale and beyond, as a flexible temporary or as a stationary tool to localize basic telescope elements, while these are completely passive.

K. G. Kebkal; R. Bannasch; O. G. Kebkal; A. I. Panfilov; R. Wischnewski

2008-11-07T23:59:59.000Z

108

Acoustic Building Infiltration Measurement System (ABIMS)  

Energy.gov (U.S. Department of Energy (DOE))

The Acoustic Building Infilitration Measurement System project is developing an acoustic method of measuring the infiltration of a building envelope.

109

Spacetime transformation acoustics  

E-Print Network (OSTI)

A recently proposed analogue transformation method has allowed the extension of transformation acoustics to general spacetime transformations. We analyze here in detail the differences between this new analogue transformation acoustics (ATA) method and the standard one (STA). We show explicitly that STA is not suitable for transformations that mix space and time. ATA takes as starting point the acoustic equation for the velocity potential, instead of that for the pressure as in STA. This velocity-potential equation by itself already allows for some transformations mixing space and time, but not all of them. We explicitly obtain the entire set of transformations that do not leave its form invariant. It is in these cases that ATA shows its true potential, allowing for building a transformation acoustics method that enables the full range of spacetime transformations. We provide an example of an important transformation which cannot be achieved with STA. Using this transformation, we design and simulate an acoustic frequency converter via the ATA approach. Furthermore, in those cases in which one can apply both the STA and ATA approaches, we study the different transformational properties of the corresponding physical quantities.

C. García-Meca; S. Carloni; C. Barceló; G. Jannes; J. Sánchez-Dehesa; A. Martínez

2014-07-08T23:59:59.000Z

110

Definition: Acoustic Televiewer | Open Energy Information  

Open Energy Info (EERE)

Televiewer Televiewer Jump to: navigation, search Dictionary.png Acoustic Televiewer The Acoustic Televiewer (ATV) log provides a very-high resolution, sonic image of the borehole wall. The tool consists of an ultrasonic transducer coupled with a downhole inclinometer. These devices are used to generate an oriented image of seismic velocity variation and wave amplitude. These images are then examined and highlighted to reveal fractures, bedding planes and orientation of those features. The log is useful for strata and fracture delineation, and can also be used to evaluate compressional-wave velocity, borehole deviation and eccentricity.[1] References ↑ http://www.dot.ca.gov/hq/esc/geotech/gg/atv_log.htm Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like.

111

Autonomous adaptive acoustic relay positioning  

E-Print Network (OSTI)

We consider the problem of maximizing underwater acoustic data transmission by adaptively positioning an autonomous mobile relay so as to learn and exploit spatial variations in channel performance. The acoustic channel ...

Cheung, Mei Yi, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

112

Acoustically enhanced remediation, Phase 2: Technology scaling  

SciTech Connect

Weiss Associates is conducting the following three phase program investigating the in-situ application of acoustically enhanced remediation (AER) of contaminated unconsolidated soil and ground water under both saturated and unsaturated conditions: Phase I-- laboratory scale parametric investigation; Phase II--technology Scaling; and Phase III--large scale field tests. AER addresses the need for NAPL (either lighter or denser than water: LNAPL or DNAPL, respectively) in high and low permeability sediments, and the remediation of other types of subsurface contaminants (e.g., metals, radionuclides) in low permeability soils. This program has been placed in the U.S. Department of Energy`s (DOE`s) DNAPL product. Phase I indicated that AER could be used to effectively remediate NAPL in high permeability soil, and that removal of NAPL from low permeability soil could be increased since the water flux through these soils was significantly increased. Phase II, Technology Scaling, the subject of this paper, focused on (1) evaluating the characteristics of an AER field deployment system, (2) developing DNAPL flow and transport performance data under acoustic excitation, (3) predicting the effect of acoustic remediation in three-dimensional unconsolidated hydrogeologic conditions, (4) conducting an engineering analysis of acoustical sources, and (5) identifying candidate field site(s) for large-scale field testing of the technology.

Iovenitti, J.L.; Hill, D.G. [Weiss Associates, Emeryville, CA (United States); Rynne, T.M.; Spadaro, J.F.; Hutchinson, W. [Scientific Applications and Research Associates, Inc., Huntington Beach, CA (United States); Illangasakere, T. [Colorado Univ., Boulder, CO (United States). Dept. of Civil, Environmental, and Architectural Engineering

1996-12-31T23:59:59.000Z

113

Geothermal Properties Measurement Tool | Open Energy Information  

Open Energy Info (EERE)

Geothermal Properties Measurement Tool Geothermal Properties Measurement Tool Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Geothermal Properties Measurement Tool Agency/Company /Organization: Oak Ridge National Laboratory Sector: Energy Focus Area: Geothermal Topics: Resource assessment Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.ornl.gov/sci/ees/etsd/btric/ground-source.shtml Cost: Free References: Geothermal Properties Measurement Tool [1] Logo: Geothermal Properties Measurement Tool The Geothermal Properties Measurement tool was developed at Oak Ridge National Laboratory for geothermal heat pump (GHP) designers and installers to better determine the geothermal properties of a certain location. The Geothermal Properties Measurement Excel tool was developed at Oak Ridge

114

The lithics of Aganoa Village (AS-22-43), American Samoa: a test of chemical characterization and sourcing Tutuilan tool-stone  

E-Print Network (OSTI)

as the primary form of transportation. Basalt samples were tested for their geochemical composition using Instrumental Neutron Activation Analysis (INAA) and the results are compared to those of a similar study of quarries on the eastern portion of Tutuila...-43) was analyzed macroscopically, and a sample of it was analyzed using Instrumental Neutron Activation Analysis (INAA). Initial analysis included the use of current typologies for adzes and flake tools (Green and Davidson 1969; Clark and Herdrich 1993). All...

Crews, Christopher Thomas

2008-10-10T23:59:59.000Z

115

ARM - Data Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

govDataData Tools govDataData Tools Data Tools Most ARM data is archived and made available as time-series data in netCDF format. NetCDF (designed by Unidata) is relatively compact, is appendable, is capable of storing descriptive "meta-data" along with measurement data, and is platform-independent. However, the organization of data within netCDF files tends to follow conventions reflecting either the source or the end use of the data. Consequently, tools developed for use with netCDF files following one convention may not be optimal for use with those following another convention. For example, tools designed for examination of geographically-gridded data may not be well-suited for analysis of time-series data such as that generated by ARM. In addition, some of the

116

Separation of acoustic waves in isentropic flow perturbations  

E-Print Network (OSTI)

The present contribution investigates the mechanisms of sound generation and propagation in the case of highly-unsteady flows. It is based on the linearisation of the isentropic Navier-Stokes equation around a new pathline-averaged base flow. As a consequence of this unsteady and non-radiating base flow, the perturbation equations satisfy a conservation law. It is demonstrated that this flow perturbations can be split into acoustic and vorticity modes, with the acoustic modes being independent of the vorticity modes. Moreover, we conclude that the present acoustic perturbation is propagated by the convective wave equation and fulfills Lighthills acoustic analogy. Therefore, we can define the deviations of the Navier-Stokes equation from the convective wave equation as true sound sources. In contrast to other authors, no assumptions on a slowly varying or irrotational flow are necessary. Using a symmetry argument for the conservation laws, an energy conservation result and a generalisation of the sound intensity is provided.

Christian Henke

2014-08-06T23:59:59.000Z

117

Extracting the Acoustic pressure field from Large Eddy Simulation of confined reactive flows  

E-Print Network (OSTI)

and non-premixed open flames3,4 as well as in more complex cases such as gas turbine combustors must be large enough to include the sources of noise as well as part of the acoustic near field.6 VeryExtracting the Acoustic pressure field from Large Eddy Simulation of confined reactive flows Camilo

Nicoud, Franck

118

Building Energy Software Tools Directory: Tools by Subject - Other  

NLE Websites -- All DOE Office Websites (Extended Search)

Indoor Air Indoor Air A B C D E F I K L M P S T U V Tool Applications Free Recently Updated AcousticCalc HVAC acoustics, sound level prediction, noise level AnTherm Thermal heat bridges, heat flow, steady state, 2D, 3D, transfer coefficients, thermal conductance, visualization, simulation, European standards, EPBD, temperature distribution, vapor transfer, vapor diffusion, avoiding moisture, avoiding mould, energy performance, linear thermal transmittance, point thermal transmittance, vapor pressure, surface condensation, thermal comfort, dew point Software has been updated. BuildingAdvice Whole building analysis, energy simulation, renewable energy, retrofit analysis, sustainability/green buildings Software has been updated. BUS++ energy performance, ventilation, air flow, indoor air quality, noise level Software has been updated.

119

Building Energy Software Tools Directory: Tools by Subject - Whole Building  

NLE Websites -- All DOE Office Websites (Extended Search)

Retrofit Analysis Retrofit Analysis A B C D E F G H I L M N O P R S T U V W Tool Applications Free Recently Updated AcousticCalc HVAC acoustics, sound level prediction, noise level AEPS System Planning electrical system, renewable energy system, planning and design software, modeling, simulation, energy usage, system performance, financial analysis, solar, wind, hydro, behavior characteristics, usage profiles, generation load storage calculations, on-grid, off-grid, residential, commercial, system sizing, utility rate plans, rate comparison, utility costs, energy savings Software has been updated. AFT Fathom design, pump selection, pipe analysis, duct design, duct sizing, chilled water systems, hot water system Software has been updated. AUDIT operating cost, bin data, residential, commercial

120

Building Energy Software Tools Directory: Tools by Subject - Other  

NLE Websites -- All DOE Office Websites (Extended Search)

Multibuilding Facilities Multibuilding Facilities A B C E F G H I K L M N O P Q R T U V W Tool Applications Free Recently Updated AcousticCalc HVAC acoustics, sound level prediction, noise level Benchmata Automated Benchmarking System Automation Portfolio Manager Software has been updated. BuildingAdvice Whole building analysis, energy simulation, renewable energy, retrofit analysis, sustainability/green buildings Software has been updated. Carbon Estates Energy Benchmarking; Retrofitting Simulation; Energy Management; Carbon Management Software has been updated. Commodity Server energy database server, time series energy, portfolio management CONTAM airflow analysis; building controls; contaminant dispersal; indoor air quality, multizone analysis, smoke control, smoke management, ventilation Free software. Software has been updated.

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Acoustical performance testing of duct silencers  

Science Journals Connector (OSTI)

The test method used in North America to evaluate the acoustical performance of duct silencers is ASTM E477. The ASTM standard provides an approved method for measuring the aerodynamic pressure drop dynamic insertion loss and self?generated noise of duct silencers. Unfortunately restrictions on the construction of the test duct in the current standard cause erroneous results in the measurement of insertion loss at low frequencies. These errors are due to acoustic resonances that occur naturally in the empty test duct. It is recommended that the standard be modified to require anechoic terminations at both ends of the test duct. It is also recommended that more specific design criteria for the source chamber be established and that a new section be added to provide for the measurement of the radiated noise from the casing of the test specimen. Specific recommendations relating to all of these issues will be provided.

2002-01-01T23:59:59.000Z

122

An overview of time?reversal acoustics  

Science Journals Connector (OSTI)

Time?reversal invariance is a very powerful concept in physics. In the field of acoustics where time reversal invariance occurs time?reversal experiments may be achieved simply with arrays of transmit?receive transducers allowing an incident wave field to be sampled recorded time?reversed and re?emitted. Time reversal mirrors (TRMs) may be used to study random media and chaotic reverberating structures. Common to these complex media is a remarkable robustness exemplified by observations that the more complex the medium between the probe source and the TRM the sharper the focus. TRMs open the way to new signal processings that interest imaging detection telecommunications and therapy. Time reversal mirrors have plenty of applications including ultrasonic therapy and medical imaging non destructive testing telecommunications underwater acoustics seismology sound control home automation. An overview of these fields will be presented.

Mathias Fink

2008-01-01T23:59:59.000Z

123

Tools & Technologies  

Energy.gov (U.S. Department of Energy (DOE))

We provide leadership for transforming workforce development through the power of technology. It develops corporate educational technology policy and enables the use of learning tools and...

124

Modern Schoolroom Acoustics  

Science Journals Connector (OSTI)

Many teachers are faced with conducting classes in buildings that were obsolete thirty years ago. Others are or soon will be teaching in new schools which are in no way modern in some of their basic construction details. A classroom laboratory or auditorium is fundamentally a shelter in which the basic functions are seeing and hearing. Daylight provides satisfactory seeing a large part of the time. In spite of this about $1.50 per square foot is the average investment for auxiliary lighting while satisfactory acoustics is often completely overlooked or is the target of severe economy measures. Architects today are often eliminating or seriously compromising on the acoustical treatment expenditure while spending lavishly for less important materials. Eighty?five percent articulation will usually result in satisfactory hearing for adults because the context supplies the transitional ties. For children however especially the very young each word and every syllable is important. Excessive reverberation time or poor sound distribution may create conditions which seriously handicap the students and teachers alike. Modern medical methods have shown that poor eyes and poor hearing are often responsible for backward children who are really average or above average in mental ability. It is inexcusable to add to their natural handicaps those of poor architecture and poor engineering. Good acoustics is as fundamental as lighting and ventilation and much more attention should be paid to this phase of school design.

L. F. Yerges; M. A. Smith

1949-01-01T23:59:59.000Z

125

Use of high performance computing resources for underwater acoustic modeling.  

Science Journals Connector (OSTI)

The majority of standard underwater propagation models provide a two?dimensional (range and depth) acoustic field for a single frequency point source. Computational resource demand increases considerably when the three?dimensional acoustic field of a broad?band spatially extended source is of interest. An upgrade of the standard parabolic equationmodel RAM for use in a high?performance computing (HPC) environment is discussed. A benchmarked upgraded version of RAM is used in the Louisiana Optical Network Initiative HPC?environment to model the three?dimensional acoustic field of a seismic airgun array. Four?dimensional visualization (time and space) of the generated data volume is also addressed. [Research supported by the Louisiana Optical Network Initiative TeraGrid Fellowship and the Joint Industry Programme through the International Association of Oil and Gas Producers.

Anca M. Niculescu; Natalia A. Sidorovskaia; Peter Achi; Arslan M. Tashmukhambetov; George E. Ioup; Juliette W. Ioup

2009-01-01T23:59:59.000Z

126

Cylindrical Acoustic Levitator/Concentrator  

NLE Websites -- All DOE Office Websites (Extended Search)

Cylindrical Acoustic Levitator/Concentrator Cylindrical Acoustic Levitator/Concentrator Cylindrical Acoustic Levitator/Concentrator A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. Available for thumbnail of Feynman Center (505) 665-9090 Email Cylindrical Acoustic Levitator/Concentrator A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. It is constructed from a commercially available, hollow cylindrical piezoelectric crystal which has been modified to tune the resonance frequency of the breathing mode resonance of the crystal to that

127

A scalable tools communication infrastructure.  

SciTech Connect

The Scalable Tools Communication Infrastructure (STCI) is an open source collaborative effort intended to provide high-performance, scalable, resilient, and portable communications and process control services for a wide variety of user and system tools. STCI is aimed specifically at tools for ultrascale computing and uses a component architecture to simplify tailoring the infrastructure to a wide range of scenarios. This paper describes STCI's design philosophy, the various components that will be used to provide an STCI implementation for a range of ultrascale platforms, and a range of tool types. These include tools supporting parallel run-time environments, such as MPI, parallel application correctness tools and performance analysis tools, as well as system monitoring and management tools.

Buntinas, D.; Bosilca, G.; Graham, R. L.; Vallee, G.; Watson, G. R.; Mathematics and Computer Science; Univ. of Tennessee; ORNL; IBM

2008-07-01T23:59:59.000Z

128

A Scalable Tools Communication Infrastructure  

SciTech Connect

The Scalable Tools Communication Infrastructure (STCI) is an open source collaborative effort intended to provide high-performance, scalable, resilient, and portable communications and process control services for a wide variety of user and system tools. STCI is aimed specifically at tools for ultrascale computing and uses a component architecture to simplify tailoring the infrastructure to a wide range of scenarios. This paper describes STCI's design philosophy, the various components that will be used to provide an STCI implementation for a range of ultrascale platforms, and a range of tool types. These include tools supporting parallel run-time environments, such as MPI, parallel application correctness tools and performance analysis tools, as well as system monitoring and management tools.

Buntinas, Darius [Argonne National Laboratory (ANL); Bosilca, George [University of Tennessee, Knoxville (UTK); Graham, Richard L [ORNL; Vallee, Geoffroy R [ORNL; Watson, Gregory R. [IBM T. J. Watson Research Center

2008-01-01T23:59:59.000Z

129

Software Tools  

Energy.gov (U.S. Department of Energy (DOE))

AMO’s tools help manufacturers increase industrial energy efficiency at the plant-level and in specific systems. Learn step-by-step ways to identify opportunities, monitor progress, and improve efficiency in any facility. Some tools help facilities implement an energy management system and prepare to become ISO 50001 and Superior Energy Performance certified.

130

Sustainable Urban Transport Project (SUTP) Tools | Open Energy...  

Open Energy Info (EERE)

Related Tools Global EV Outlook Annual Monitoring Report Interactive Map Calculating CO2 Emissions from Mobile Sources ... further results Find Another Tool FIND...

131

Acoustic emission during polymer crystallization  

Science Journals Connector (OSTI)

... .G.; part support to L.K.) Acoustic Emission, Special Technical Publication 505, ASTM, Philadelphia, 1971; Grabec, I. & Peterlin, A. J. Polymer Sci. ...

A. Galeski; L. Koenczoel; E. Piorkowska; E. Baer

1987-01-01T23:59:59.000Z

132

Acoustic Character Of Hydraulic Fractures In Granite  

E-Print Network (OSTI)

Hydraulic fractures in homogeneous granitic rocks were logged with conventional acoustic-transit-time, acoustic-waveform, and acoustic-televiewer logging systems. Fractured intervals ranged in depth from 45 to 570m. and ...

Paillet, Frederick I.

1983-01-01T23:59:59.000Z

133

Modeling acoustics in virtual environments using the uniform theory of diffraction  

Science Journals Connector (OSTI)

Realistic modeling of reverberant sound in 3D virtual worlds provides users with important cues for localizing sound sources and understanding spatial properties of the environment. Unfortunately, current geometric acoustic modeling systems do not accurately ...

Nicolas Tsingos; Thomas Funkhouser; Addy Ngan; Ingrid Carlbom

2001-08-01T23:59:59.000Z

134

Building Energy Software Tools Directory: Tools by Country - Switzerland  

NLE Websites -- All DOE Office Websites (Extended Search)

Switzerland Switzerland A E F L M P U Tool Applications Free Recently Updated ACOUSALLE acoustics, codes and standards ECO-BAT environmental performance, life cycle assessment, sustainable development Software has been updated. EnerCAD Building Energy Efficiency; Early Design Optimization; Architecture Oriented; Life Cycle Analysis Software has been updated. flixo 2D heat transfer, cold bridge, fenestration, frame U-value, thermal bridge Software has been updated. LESO-COMFORT thermal comfort, load calculation, energy LESO-SHADE shading factors, solar shading, building geometry LESOCOOL airflow, passive cooling, energy simulation, mechanical ventilation LESODIAL Daylighting, early design stage, user-friendliness LESOKAI thermal tranmission, water vapor, building envelope Software has been updated.

135

Acoustic Logs At Newberry Caldera Area (Combs, Et Al., 1999) | Open Energy  

Open Energy Info (EERE)

Acoustic Logs At Newberry Caldera Area (Combs, Et Al., 1999) Acoustic Logs At Newberry Caldera Area (Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Acoustic Logs At Newberry Caldera Area (Combs, Et Al., 1999) Exploration Activity Details Location Newberry Caldera Area Exploration Technique Acoustic Logs Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes The acoustic borehole televiewer (BHTV) was run twice in the wellbore with limited success. There were several problems with the tool's fimctions, but images were successfully obtained over the interval from 2748' to 3635'. References Jim Combs, John T. Finger, Colin Goranson, Charles E. Hockox Jr., Ronald D. Jacobsen, Gene Polik (1999) Slimhole Handbook- Procedures And Recommendations For Slimhole Drilling And Testing In Geothermal Exploration

136

Acoustic propagation characteristics of the estuarine salt wedge  

Science Journals Connector (OSTI)

The estuarine environment often hosts a salt wedge-a layer of denser seawater advected by the rising tide under fresh water discharged by the river. The nature of the stratification is a function of the tide's range and speed of advance river discharge volumetric flow rate and river mouth morphology. The competing effects of temperature and salinity on sound speed present the question: Is the salt wedge acoustically observable? Using temperature and salinity profiles collected in situ numerical results show that the salt wedge can impact acoustic propagation. Acoustically this environment can be approximated by two isospeed layers separated by a thin gradient. While this three-layer very shallow water acoustic waveguide is typically dominated by high angle multipath propagation refraction occurring in the gradient layer allows low-angle energy from near-surface sources to be trapped above the gradient and creates a shadow zone below the gradient. Energy from near-bottom sources is refracted to higher angles and attenuated more quickly. Acoustic fluctuations observed at an upstream/downstream receiver depend upon the presence/absence of bedforms and the interaction between the advancing/receding tide and the river discharge which can include the presence of internal waves propagating along the top of the salt wedge.

D. B. Reeder

2013-01-01T23:59:59.000Z

137

Heat-driven acoustic cooling engine having no moving parts  

DOE Patents (OSTI)

A heat-driven acoustic cooling engine having no moving parts receives heat from a heat source. The acoustic cooling engine comprises an elongated resonant pressure vessel having first and second ends. A compressible fluid having a substantial thermal expansion coefficient and capable of supporting an acoustic standing wave is contained in the resonant pressure vessel. The heat source supplies heat to the first end of the vessel. A first heat exchanger in the vessel is spaced-apart from the first end and receives heat from the first end. A first thermodynamic element is adjacent to the first heat exchanger and converts some of the heat transmitted by the first heat exchanger into acoustic power. A second thermodynamic element has a first end located spaced-apart from the first thermodynamic element and a second end farther away from the first thermodynamic element than is its first end. The first end of the second thermodynamic element heats while its second end cools as a consequence of the acoustic power. A second heat exchanger is adjacent to and between the first and second thermodynamic elements. A heat sink outside of the vessel is thermally coupled to and receives heat from the second heat exchanger. The resonant pressure vessel can include a housing less than one-fourth wavelength in length coupled to a reservoir. The housing can include a reduced diameter portion communicating with the reservoir.

Wheatley, John C. (Los Alamos, NM); Swift, Gregory W. (Santa Fe, NM); Migliori, Albert (Santa Fe, NM); Hofler, Thomas J. (Los Alamos, NM)

1989-01-01T23:59:59.000Z

138

Applications of beamforming and acoustic holography in an anechoic tank with surface reflections  

Science Journals Connector (OSTI)

Recently our institute KRISO/KORDI constructed a small anechoic tank which has an anechoic lining at the four walls and bottom. Because surface reflections still occur special care must be taken for acoustic measurements and array signal processing for example source localization and acoustic holography. In this paper the effects of the surface reflections to the array signal processing methods are investigated. First estimated errors by both methods are analyzed for various measurement parameters. Beamforming experiments with vertical line arrays are performed. Holographic reconstruction of simple and complex acoustic sources is also performed to compare the true and estimated results.

2004-01-01T23:59:59.000Z

139

NW-MILO Acoustic Data Collection  

SciTech Connect

There is an enduring requirement to improve our ability to detect potential threats and discriminate these from the legitimate commercial and recreational activity ongoing in the nearshore/littoral portion of the maritime domain. The Northwest Maritime Information and Littoral Operations (NW-MILO) Program at PNNL’s Coastal Security Institute in Sequim, Washington is establishing a methodology to detect and classify these threats - in part through developing a better understanding of acoustic signatures in a near-shore environment. The purpose of the acoustic data collection described here is to investigate the acoustic signatures of small vessels. The data is being recorded continuously, 24 hours a day, along with radar track data and imagery. The recording began in August 2008, and to date the data contains tens of thousands of signals from small vessels recorded in a variety of environmental conditions. The quantity and variety of this data collection, with the supporting imagery and radar track data, makes it particularly useful for the development of robust acoustic signature models and advanced algorithms for signal classification and information extraction. The underwater acoustic sensing system is part of a multi-modal sensing system that is operating near the mouth of Sequim Bay. Sequim Bay opens onto the Straight of Juan de Fuca, which contains part of the border between the U.S. and Canada. Table 1 lists the specific components used for the NW-MILO system. The acoustic sensor is a hydrophone permanently deployed at a mean depth of about 3 meters. In addition to a hydrophone, the other sensors in the system are a marine radar, an electro-optical (EO) camera and an infra-red (IR) camera. The radar is integrated with a vessel tracking system (VTS) that provides position, speed and heading information. The data from all the sensors is recorded and saved to a central server. The data has been validated in terms of its usability for characterizing the signatures of small vessels. The sampling rate of 8 kHz and low pass filtering to 2 kHz results in an alias-free signal in the frequency band that is appropriate for small vessels. Calibration was performed using a Lubell underwater speaker so that the raw data signal levels can be converted to sound pressure. Background noise is present due to a nearby pump and as a result of tidal currents. More study is needed to fully characterize the noise, but it does not pose an obstacle to using the acoustic data for the purposes of vessel detection and signature analysis. The detection range for a small vessel was estimated using the calibrated voltage response of the system and a cylindrical spreading model for transmission loss. The sound pressure of a typical vessel with an outboard motor was found to be around 140 dB mPa, and could theoretically be detected from 10 km away. In practical terms, a small vessel could reliably be detected from 3 - 5 km away. The data is archived in netCDF files, a standard scientific file format that is "self describing". This means that each data file contains the metadata - timestamps, units, origin, etc. - needed to make the data meaningful and portable. Other file formats, such as XML, are also supported. A visualization tool has been developed to view the acoustic data in the form of spectrograms, along with the coincident radar track data and camera images.

Matzner, Shari; Myers, Joshua R.; Maxwell, Adam R.; Jones, Mark E.

2010-02-17T23:59:59.000Z

140

Prioritization Tool  

Energy.gov (U.S. Department of Energy (DOE))

BTO has developed the Prioritization Tool to provide analytical support for its programmatic decision-making and to further accelerate the transformation of the U.S. building energy efficiency sector.

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Prioritization Tool  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Program Peer Review Alexis Abramson Chief Scientist alexis.abramson@ee.doe.gov April 2, 2013 Building Technologies Office Prioritization Tool 2 | Building Technologies Office eere.energy.gov Vision: develop an analytical tool that considers building efficiency measures and technologies, and assesses and compares their potential value into the future Uses: * Inform programmatic decision-making * Examine "what if" scenarios * Create targets for FOAs

142

Ocean acoustic thermometry and the seasonal cycle of temperature in the North Pacific Ocean  

Science Journals Connector (OSTI)

With several years of long?range (several Mm) acoustic propagation data obtained during the Acoustic Thermometry of Ocean Climate (ATOC) and North Pacific Acoustic Laboratory (NPAL) projects the seasonal cycle of oceantemperature in the North Pacific can be examined. Acoustic transmissions have been made from a source located off the northern Californian coast and from a source located north of Kauai HI to several receivers of opportunity located in the North Pacific Basin. The acoustic data are a high signal?to?noise measure of large?scale temperature with excellent temporal resolution. Although only a few realizations of the seasonal cycle are available it is clear that inter? and intraannual variabilities are large contributions to the time series with signal amplitudes comparable to the seasonal cycle. Such variabilities are likely advective in origin. The time scales for some of the changes in temperature are short sometimes of order weeks. Not all available acoustic paths are suitable for assessing the seasonal cycle however. Near Hawaii the acoustic sampling does not extend to the near?surface waters so seasonal variations there are not measured. The acoustic results will be compared to measures of the seasonal cycle by satellite altimetry profiling floats and the ECCO numerical ocean model.

2006-01-01T23:59:59.000Z

143

Single Molecule as a Local Acoustic Detector for Mechanical Oscillators  

Science Journals Connector (OSTI)

A single molecule can serve as a nanometer-sized detector of acoustic strain. Such a nanomicrophone has the great advantage that it can be placed very close to acoustic signal sources and high sensitivities can be achieved. We demonstrate this scheme by monitoring the fluorescence intensity of a single dibenzoterrylene molecule in an anthracene crystal attached to an oscillating tuning fork. The characterization of the vibration amplitude and of the detection sensitivity is a first step towards detection and control of nanomechanical oscillators through optical detection and feedback.

Yuxi Tian; Pedro Navarro; Michel Orrit

2014-09-26T23:59:59.000Z

144

Device and method for generating a beam of acoustic energy from a borehole, and applications thereof  

DOE Patents (OSTI)

In some aspects of the invention, a method of generating a beam of acoustic energy in a borehole is disclosed. The method includes generating a first broad-band acoustic pulse at a first broad-band frequency range having a first central frequency and a first bandwidth spread; generating a second broad-band acoustic pulse at a second broad-band frequency range different than the first frequency range having a second central frequency and a second bandwidth spread, wherein the first acoustic pulse and second acoustic pulse are generated by at least one transducer arranged on a tool located within the borehole; and transmitting the first and the second broad-band acoustic pulses into an acoustically non-linear medium, wherein the composition of the non-linear medium produces a collimated pulse by a non-linear mixing of the first and second acoustic pulses, wherein the collimated pulse has a frequency equal to the difference in frequencies between the first central frequency and the second central frequency and a bandwidth spread equal to the sum of the first bandwidth spread and the second bandwidth spread.

Vu, Cung Khac; Sinha, Dipen N; Pantea, Cristian; Nihei, Kurt T; Schmitt, Denis P; Skelt, Christopher

2013-10-01T23:59:59.000Z

145

Regulatory Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Regulatory Tools Regulatory Tools Home CRA - 2004 Final Recertification Decision CRA Comments & Responses CCA - 1996 CRA CARDs & TSDs CCA CARDs & TSDs Regulatory Tools Title 40 CFR Part 191 Environmental Radiation Protection Standards for Management and Disposal of Spent Nuclear Fuel, High-Level and Transuranic Radioactive Wastes. Title 40 CFR Part 194 Criteria for the Certification and Re-Certification of the Waste Isolation Pilot Plant's Compliance With the 40 CFR Part 191 Disposal Regulations. Part I Title 40 CFR Part 194 Criteria for the Certification and Recertification of the Waste Isolation Pilot Plant's Compliance With the Disposal Regulations; Alternative Provisions; Proposed Rule. Friday August 9, 2002. Part II Title 40 CFR Part 194 Criteria for the Certification and Recertification of the Waste Isolation Pilot Plant's Compliance With the Disposal Regulations: Certification Decision; Final Rule. May 18, 1998. Part III

146

Simulation Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Building simulation tool screen capture Building simulation tool screen capture Simulation Tools Researchers develop whole-building energy simulation software programs that allow architects and building engineers to design or retrofit buildings for maximum energy efficiency and occupant comfort. Programs developed by researchers include: the EnergyPlus whole building simulation program, the Modelica Buildings library for rapid prototyping and controls design, the Building Controls Virtual Test Bed for co-simulation and for model-based operation, and the GenOpt generic optimization program. Contacts Philip Haves PHaves@lbl.gov (510) 486-6512 Michael Wetter MWetter@lbl.gov (510) 486-6990 Links Simulation Research Group Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings

147

Acoustic propagation characteristics of the estuarine salt wedge  

Science Journals Connector (OSTI)

The estuarine environment often hosts a salt wedge—a layer of denser seawater advected by the rising tide under fresh water discharged by the river. The nature of the stratification is a function of the tide's range and speed of advance river discharge volumetric flow rate and river mouth morphology. The competing effects of temperature and salinity on sound speed present the question: Is the salt wedge acoustically observable? Using temperature and salinity profiles collected in situ numerical results show that the salt wedge can impact acoustic propagation. Acoustically this environment consists of two isospeed layers separated by a thin gradient. While this three-layer very shallow water acoustic waveguide is typically dominated by high angle multipath propagation refraction occurring in the gradient layer allows some low-angle energy from near-surface sources to be trapped in the upper layer. Acoustic fluctuations observed at an upstream or downstream receiver depend upon the interaction between the advancing and receding tide and the river discharge which can include the presence of internal waves propagating along the top of the salt wedge.

2013-01-01T23:59:59.000Z

148

Acoustic detection of neutrinos  

Science Journals Connector (OSTI)

When high energy neutrinosinteract with nucleons in the ocean a jet of hadrons is produced which deposits thermal energy. This thermal energy is expected to produce a sonic pulse which hopefully will be sufficiently intense and directional to enable the energy and direction of incidence of the primary neutrino to be determined [Antares Parvulescu J. Acoust. Soc. Am. 61 580(A) (1977)]. This paper discusses the physical mechanism whereby the energy of the neutrino is converted into a sound pulse. A simple model will be exploited to account for the signature expected from such an event. [Work supported in part by the U. S. Naval Ocean Research and Development Activity and by the U. S. Department of Energy.

Peter J. Westervelt

1978-01-01T23:59:59.000Z

149

Acoustically invisible cylinder  

Science Journals Connector (OSTI)

Coatings of new type recently proposed by the author (Acoustical Physics 2007 vol. 53 N5 pp. 535?545) are applied to bodies of cylindrical geometry to reduce reflection or scattering of sound and thus to make them undetectable by imaging systems. Such a coating called as a coating with extended reaction represents a periodic set of small elements with coupling between the neighboring elements. Appropriate choice of the coupling parameters makes its efficiency much higher than that of commonly used coatings. In the present paper it is shown by computer simulation that a rather simple coating of this type can reduce the back?scattered pressure amplitude more than 40 dB (with respect to the rigid cylinder) practically at all frequencies. Considerable reduction of the scattered power can also be achieved in a low frequency range. The width of this range and the reduction index depend on the number of couplings introduced into the coating.

Yuri Bobrovnitskii

2008-01-01T23:59:59.000Z

150

Acoustic Correlates of Information Structure.  

E-Print Network (OSTI)

This paper reports three studies aimed at addressing three questions about the acoustic correlates of information structure in English: (1) do speakers mark information structure prosodically, and, to the extent they do; ...

Breen, Mara

151

Issues in acoustic field testing of quiet modular classrooms  

Science Journals Connector (OSTI)

Modular classrooms are important to American education: About 300 000 modular classrooms are currently in use by public school systems here. Good acoustical conditions for learning are no less vital for students in modular classrooms than stick?built classrooms. In an effort to promote good acoustics in modular classrooms ANSI S12 Working Group 46 is seeking to standardize acoustic field testing. Their efforts are in response to key acoustical issues of modular classrooms: Excessive noise from HVAC (heating ventilating and air conditioning) systems and poor airborne sound insulation from exterior noise sources. In a recent and notable advance an HVAC system provider reported good progress in modular HVACnoise reduction: A ducted wall mounted system was used instead of the usual free blowing system with exposed fans. HVACnoise in the unoccupied room was near the maximum 35 dB level required by ANSI S12.60. Interior noise levels were so low that efforts to confirm their values were confounded by noise contamination from exterior sources. The relatively high interior ambient noise levels were due to poor airborne sound insulation. Lessons learned from recent field testing will be discussed. Results of airborne sound insulation tests now in planning stages will be reported if available.

David Lubman; Louis C. Sutherland

2007-01-01T23:59:59.000Z

152

Acoustic normal mode fluctuation statistics in the 1995 SWARM internal wave scattering experiment  

Science Journals Connector (OSTI)

In order to understand the fluctuations imposed upon low frequency (50 to 500 Hz) acoustic signals due to coastal internal waves a large multilaboratory multidisciplinary experiment was performed in the Mid-Atlantic Bight in the summer of 1995. This experiment featured the most complete set of environmental measurements (especially physical oceanography and geology) made to date in support of a coastal acoustics study. This support enabled the correlation of acoustic fluctuations to clearly observed ocean processes especially those associated with the internal wave field. More specifically a 16 element WHOI vertical line array (WVLA) was moored in 70 m of water off the New Jersey coast. Tomography sources of 224 Hz and 400 Hz were moored 32 km directly shoreward of this array such that an acoustic path was constructed that was anti-parallel to the primary onshore propagation direction for shelf generated internal wavesolitons. These nonlinear internal waves produced in packets as the tide shifts from ebb to flood produce strong semidiurnal effects on the acoustic signals at our measurement location. Specifically the internal waves in the acoustic waveguide cause significant coupling of energy between the propagating acoustic modes resulting in broadband fluctuations in modal intensity travel-time and temporal coherence. The strong correlations between the environmental parameters and the internal wave field include an interesting sensitivity of the spread of an acoustic pulse to solitons near the receiver.

Robert H. Headrick; James F. Lynch; John N. Kemp; Arthur E. Newhall; Keith von der Heydt; John Apel; Mohsen Badiey; Ching-sang Chiu; Steve Finette; Marshall Orr; Bruce Pasewark; Alton Turgot; Steve Wolf; Dirk Tielbuerger

2000-01-01T23:59:59.000Z

153

Metrology Sources for EUV Lithography  

Science Journals Connector (OSTI)

Mask inspection and validation are key elements of the EUV lithography infrastructure. Requirements for the light sources to enable these tools will be ...

Home, Steve; Blackborow, Paul; Bensen, Matthew M; Partlow, Matthew J; Gustafson, Deborah; Goldstein, Michael

154

Design Parameters of a Miniaturized Piezoelectric Underwater Acoustic Transmitter  

SciTech Connect

The Juvenile Salmon Acoustic Telemetry System (JSATS) project supported by the U.S. Army Corps of Engineers, Portland District, has yielded the smallest acoustic fish tag transmitter commercially available to date. In order to study even smaller fish populations and make the transmitter injectable by needles, the JSATS acoustic micro transmitter needs to be further downsized. As part of the transmitter downsizing effort some of the design parameters of the lead zirconate titanate (PZT) ceramic tube transducer in the transmitter were studied, including the type of PZT, the backing material, the necessary drive voltage, the transmitting bandwidth and the length of the transducer. It was found that, to satisfy the 156-dB source level requirement of JSATS, a square wave with a 10-volt amplitude is required to drive 'soft' PZT transducers. PZT-5H demonstrated the best source level performance. For Navy types I and II, 16 volts or 18 volts were needed. Ethylene-propylene-diene monomer (EPDM) closed-cell foam was found to be the backing material providing the highest source level. The effect of tube length on the source level is also demonstrated in this paper, providing quantitative information for downsizing of small piezoelectric transmitters.

Li, Huidong; Deng, Zhiqun; Yuan, Yong; Carlson, Thomas J.

2012-07-02T23:59:59.000Z

155

Acoustically invisible feeding blue whales in Northern Icelandic waters  

Science Journals Connector (OSTI)

Fixed passive acoustic monitoring can be used for long-term recording of vocalizing cetaceans. Both presence monitoring and animal density estimation requires the call rates and sound source levels of vocalizations produced by single animals. In this study blue whale calls were recorded using acoustic bio-logging systems in Skjálfandi Bay off Húsavík Northeast Iceland in June 2012. An accelerometer was attached to individual whales to monitor diving behavior. During 21?h recording two individuals 8?h 45?min and 13?h 2?min respectively 105 and 104 lunge feeding events and four calls were recorded. All recorded calls were down-sweep calls ranging from 105 to 48?Hz. The sound duration was 1–2?s. The source level was estimated to be between 158 and 169?dB re 1?Pa rms assuming spherical sound propagation from the possible sound source location to the tag. The observed sound production rates and source levels of individual blue whales during feeding were extremely small compared with those observed previously in breeding grounds. The feeding whales were nearly acoustically invisible. The function of calls during feeding remains unknown.

Tomonari Akamatsu

2014-01-01T23:59:59.000Z

156

Graduate studies in acoustics and noise control in the School of Mechanical Engineering at Purdue University  

Science Journals Connector (OSTI)

The acoustics community at Purdue University will be described with special emphasis on the graduate program in Mechanical Engineering (ME). Purdue is home to around 30 faculty who study various aspects of acoustics and related disciplines and so there are many classes to choose from as graduate students structure their plans of study to complement their research activities and to broaden their understanding of the various aspects of acoustics. In Mechanical Engineering the primary emphasis is on understanding noise generation noise propagation and the impact of noise on people as well as development of noise control strategies experimental techniques and noise and noise impact prediction tools. The ME acoustics research is conducted at the Ray W. Herrick Laboratories which houses several large acoustics chambers that are designed to facilitate testing of a wide array mechanical systems reflecting the Laboratories’ long history of industry-relevant research. Complementing the acoustics research Purdue has vibrations dynamics and electromechanical systems research programs and is home to a collaborative group of engineering and psychology professors who study human perception and its integration into engineering design. There are also very strong ties between ME acoustics faculty and faculty in Biomedical Engineering and Speech Language and Hearing Sciences.

2014-01-01T23:59:59.000Z

157

Reflective echo tomographic imaging using acoustic beams  

DOE Patents (OSTI)

An inspection system includes a plurality of acoustic beamformers, where each of the plurality of acoustic beamformers including a plurality of acoustic transmitter elements. The system also includes at least one controller configured for causing each of the plurality of acoustic beamformers to generate an acoustic beam directed to a point in a volume of interest during a first time. Based on a reflected wave intensity detected at a plurality of acoustic receiver elements, an image of the volume of interest can be generated.

Kisner, Roger; Santos-Villalobos, Hector J

2014-11-25T23:59:59.000Z

158

Acoustic hemostasis: Underlying mechanisms  

Science Journals Connector (OSTI)

Cessation of hemorrhage using extrinsic interventional methods is possible with delivery of energy to bleeding tissues i.e. cauterization. High intensity focused ultrasound (HIFU) is one such method with significant advantages of delivering high levels of energy to well?defined regions of deep?seated tissues even during profuse bleeding. The physical mechanisms involved in this process include thermal and mechanical effects of HIFU leading to various biological effects. Our results using HIFU devices of 1–5 MHz and focal derated intensities of 1 000–10 000 W/cm2 in solid organs such as liver spleen and kidneys and major and minor blood vessels show that temperature of targeted tissues reaches 70–100°C within seconds with formation of microbubbles approximately 5??200 ? in size and concentration of 100 bubbles/mm3. It appears that boiling of interstitial fluids and blood and acoustic cavitation are both involved. The biological effects include coagulative necrosis mechanical disruption of tissue structure potentially leading to release of tissue factors enhancing the coagulation coagulum and thrombus formation at a wound site tissue fusion via collagen and elastin remodeling and fibrin plug formation with minimal damage of the surrounding tissues. These mechanisms appear to provide an effective and safe method of hemorrhage control. [Work supported by NIH DoD NSBRI.

Shahram Vaezy; Lawrence Crum; Steve Carter; Grant O’Keefe; Vesna Zderic; Roy Martin; Riyad Karmy?Jones

2007-01-01T23:59:59.000Z

159

Building Energy Software Tools Directory: OnGrid Tool  

NLE Websites -- All DOE Office Websites (Extended Search)

OnGrid Tool OnGrid Tool The OnGrid Tool is an Excel-based application assisting in PV system sizing, pricing and quoting. It enables solar installers to gather a customerÂ’s utility and site information quickly and efficiently. It calculates optimum system size, electricity bill savings, system incentives, and system net costs. It then calculates various economic benefit factors and produces a variety of proposals, quotes, and. The OnGrid Tool includes rates, incentives, and tax calculations, and estimates system performance, including all performance factors and shading data. Screen Shots Keywords solar, financial, payback, analysis, sales, tool, software, economics, proposal Validation/Testing The software is run through Microsoft Excel and results are available immediately. OnGrid uses the most credible sources for industry updates.

160

Tool Basics  

Energy.gov (U.S. Department of Energy (DOE))

The Commercial Building Asset Score uses a 10-point scale to evaluate the energy efficiency of a building’s physical characteristics and major energy-related systems. The point value is assigned based on a building’s predicted source energy use intensity (EUI) according to the energy simulation results.

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Bonding Tools  

Energy.gov (U.S. Department of Energy (DOE))

Bonds are one of the most common forms of financing used by state and local governments, because they are a low-cost source of capital available to most entities. State and local officials may consider using bonds for a variety of clean energy purposes, including...

162

Tool | OpenEI Community  

Open Energy Info (EERE)

Tool Tool Home Graham7781's picture Submitted by Graham7781(1992) Super contributor 26 June, 2013 - 09:17 NREL's Energy Databus storing big energy data campus databus energy meter data NREL OpenEI Tool The Energy Databus began as a project aimed at addressing campus energy consumption and tracking issues at NREL. Now, with the ability to store large amounts of data, some of which measured by the second, along with rich functionality, the open-source software tool could offer the same solutions to many facilities. Sfederspiel's picture Submitted by Sfederspiel(5) Member 20 May, 2013 - 13:28 Introducing FRED, Enabling Unique Visualization and Manipulation of Energy Data at Multiple Scales FRED Free Energy Data Map OpenEI Tool Visualization The U.S. Department of Energy, the Pacific Northwest National Laboratory,

163

Fish Passage: A New Tool to Investigate Fish Movement: JSATS  

SciTech Connect

A new system is being used to determine fish mortality issues related to hydroelectric facilities in the Pacific Northwest. Called the juvenile salmon acoustic telemetry system (JSATS), this tool allows researchers to better understand fish movement, behavior, and survival around dams and powerhouses.

McMichael, Geoffrey A.; Harnish, Ryan A.; Weiland, Mark A.; Deng, Zhiqun; Eppard, Matthew B.

2011-04-20T23:59:59.000Z

164

Spring 2011 ME706 Acoustics and Aerodynamic Sound ME706 Acoustics and Aerodynamic Sound  

E-Print Network (OSTI)

Spring 2011 ME706 Acoustics and Aerodynamic Sound ME706 Acoustics and Aerodynamic Sound Instructor-surface interaction. Spring 2011 1 ME706 Acoustics and Aerodynamic Sound #12;Spring 2011 ME706 Acoustics and Aerodynamic Sound Students are expected to: · Exhibit a level of mathematical maturity roughly equivalent

165

Lattice Boltzmann method for adiabatic acoustics  

Science Journals Connector (OSTI)

...Sauro Succi and Stefano Ubertini Lattice Boltzmann method for adiabatic acoustics...Burlington, MA 01803, USA The lattice Boltzmann method (LBM) has been proved...recovery of the full NS equations. lattice Boltzmann method|computational aero-acoustics...

2011-01-01T23:59:59.000Z

166

IN ACOUSTICS UndergraduateCourses2015  

E-Print Network (OSTI)

APPLYING SOUND KNOWLEDGE IN ACOUSTICS Acoustics UndergraduateCourses2015 #12;SOUTHA 2 #12;Reach-leadingacademicsoncoursesthataredesignedaroundyou. Wegetyoureadyfortheglobaljobsmarket,whilegivingyouagreat studentexperience. Acousticalcountriestoreducenoise REDUCING AIRCRAFT NOISE OurRollsRoyceUniversity TechnologyCentreforGas Turbine

Sóbester, András

167

Acoustic data transmission through a drill string  

DOE Patents (OSTI)

Acoustical signals are transmitted through a drill string by canceling upward moving acoustical noise and by preconditioning the data in recognition of the comb filter impedance characteristics of the drill string. 5 figs.

Drumheller, D.S.

1988-04-21T23:59:59.000Z

168

Software Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Software Tools WINDOW for analyzing window thermal and optical performance THERM for analyzing two-dimensional heat transfer through building products Optics for analyzing optical properties of glazing systems International Glazing Database Optical data for glazing products used by WINDOW 5.2 and Optics5.1 including NFRC approved products Complex Glazing Database A database of shading materials and systems, such as roller shades and venetian blinds, that can be used by WINDOW 6 to calculate thermal and optical characteristics of window products with these shading systems. COMFEN A PC Program for calculating the heating and cooling energy use, and visual and thermal comfort, of commercial building facades. RESFEN A PC program for calculating the heating and cooling energy use of windows in residential buildings

169

Acoustic Logs | Open Energy Information  

Open Energy Info (EERE)

Acoustic Logs Acoustic Logs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Acoustic Logs Details Activities (7) Areas (6) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: determine porosity of layers Stratigraphic/Structural: map discontinuities to determine their orientation. Hydrological: Thermal: Cost Information Low-End Estimate (USD): 1.00100 centUSD 1.0e-3 kUSD 1.0e-6 MUSD 1.0e-9 TUSD / foot Median Estimate (USD): 4.62462 centUSD 0.00462 kUSD 4.62e-6 MUSD 4.62e-9 TUSD / foot High-End Estimate (USD): 16.001,600 centUSD 0.016 kUSD 1.6e-5 MUSD 1.6e-8 TUSD / foot

170

Raising Photoemission Efficiency with Surface Acoustic Waves  

SciTech Connect

We are developing a novel technique that may help increase the efficiency and reduce costs of photoelectron sources used at electron accelerators. The technique is based on the use of Surface Acoustic Waves (SAW) in piezoelectric materials, such as GaAs, that are commonly used as photocathodes. Piezoelectric fields produced by the traveling SAW spatially separate electrons and holes, reducing their probability of recombination, thereby enhancing the photoemission quantum efficiency of the photocathode. Additional advantages could be increased polarization provided by the enhanced mobility of charge carriers that can be controlled by the SAW and the ionization of optically-generated excitons resulting in the creation of additional electron-hole pairs. It is expected that these novel features will reduce the cost of accelerator operation. A theoretical model for photoemission in the presence of SAW has been developed, and experimental tests of the technique are underway.

A. Afanasev, F. Hassani, C.E. Korman, V.G. Dudnikov, R.P. Johnson, M. Poelker, K.E.L. Surles-Law

2012-07-01T23:59:59.000Z

171

ACOUSTIC DETECTING AND LOCATING GAS PIPE LINE INFRINGEMENT  

SciTech Connect

The extensive network of high-pressure natural gas transmission pipelines covering the United States provides an important infrastructure for our energy independence. Early detection of pipeline leaks and infringements by construction equipment, resulting in corrosion fractures, presents an important aspect of our national security policy. The National Energy Technology Laboratory Strategic Center for Natural Gas (SCVG) is and has been funding research on various applicable techniques. The WVU research team has focused on monitoring pipeline background acoustic signals generated and transmitted by gas flowing through the gas inside the pipeline. In case of a pipeline infringement, any mechanical impact on the pipe wall, or escape of high-pressure gas, generates acoustic signals traveling both up and down stream through the gas. Sudden changes in flow noise are detectable with a Portable Acoustic Monitoring Package (PAMP), developed under this contract. It incorporates a pressure compensating microphone and a signal- recording device. Direct access to the gas inside the line is obtained by mounting such a PAMP, with a 1/2 inch NPT connection, to a pipeline pressure port found near most shut-off valves. An FFT of the recorded signal subtracted by that of the background noise recorded one-second earlier appears to sufficiently isolate the infringement signal to allow source interpretation. Using cell phones for data downloading might allow a network of such 1000-psi rated PAMP's to acoustically monitor a pipeline system and be trained by neural network software to positively identify and locate any pipeline infringement.

John L. Loth; Gary J. Morris; George M. Palmer; Richard Guiler; Patrick Browning

2004-12-01T23:59:59.000Z

172

ACOUSTIC DETECTING AND LOCATING GAS PIPE LINE INFRINGEMENT  

SciTech Connect

The extensive network of high-pressure natural gas transmission pipelines covering the United States provides an important infrastructure for our energy independence. Early detection of pipeline leaks and infringements by construction equipment, resulting in corrosion fractures, presents an important aspect of our national security policy. The National Energy Technology Laboratory Strategic Center for Natural Gas (SCVG) is and has been funding research on various applicable techniques. The WVU research team has focused on monitoring pipeline background acoustic signals generated and transmitted by gas flowing through the gas inside the pipeline. In case of a pipeline infringement, any mechanical impact on the pipe wall, or escape of high-pressure gas, generates acoustic signals traveling both up and down stream through the gas. Sudden changes in flow noise are detectable with a Portable Acoustic Monitoring Package (PAMP), developed under this contract. It incorporates a pressure compensating microphone and a signal- recording device. Direct access to the gas inside the line is obtained by mounting such a PAMP, with a 1/2 inch NPT connection, to a pipeline pressure port found near most shut-off valves. An FFT of the recorded signal subtracted by that of the background noise recorded one-second earlier appears to sufficiently isolate the infringement signal to allow source interpretation. Using cell phones for data downloading might allow a network of such 1000-psi rated PAMP's to acoustically monitor a pipeline system and be trained by neural network software to positively identify and locate any pipeline infringement.

John L. Loth; Gary J. Morris; George M. Palmer; Richard Guiler; Patrick Browning

2004-10-31T23:59:59.000Z

173

Wind Project Siting Tools | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Wind Project Siting Tools Jump to: navigation, search Photo from Alstom 2010, NREL 18207 The following tools are helpful for anyone planning a wind project. Resources Cadmus Group. (2012). Distributed Wind Site Analysis Tool. Accessed March 29, 2013. The Distributed Wind Site Analysis Tool is an online tool for conducting detailed site assessments for single-turbine projects, from residential to community scale. Eastern Interconnection States' Planning Council. (2013). EISPC EZ Mapping Tool. Accessed August 13, 2013. This free online mapping tool helps to identify potential clean energy

174

Acoustic privacy and health care.  

Science Journals Connector (OSTI)

Acoustic privacy can be differentiated into two categories: freedom from intrusive noise such as a person snoring or wheezing in the next bed traffic outside the windows carts in the hallways and footsteps on the floor above; and speech privacy—the freedom from being overheard and of overhearing others. Providing the proper acoustical environment and the protecting privacy must be a joint effort between the facility designers and hospital staff. A brief discussion of the basic requirements for speech privacy and HIPAA privacy and a quality background sound will be presented.

Neil Moiseev

2010-01-01T23:59:59.000Z

175

Acoustic repair: Recent experience with the acoustic control system (ACS) for improving acoustic conditions in two existing venues  

Science Journals Connector (OSTI)

Active acoustics systems are becoming more prevalent in architectural acoustics practice particularly in the context of repairing or improving acoustics in existing venues. Governmental policies to reduce funds and subsidies put into new facilities for the performing arts are another reason for designers to consider the use of active acoustics. This paper highlights two recent examples of such installations of ACS systems one at the Sydney Opera House Concert Hall and the other at MBCCH Winnepeg Canada. Collaboration between the system designer the musicians and the acoustics consultant will be emphasized along with techniques used to evaluate the systems' performance in the halls.

Timothy E. Gulsrud; Arthur van Maurik

2011-01-01T23:59:59.000Z

176

Global Solar Opportunity Tool: A Tool for Policy Makers and Energy Analysts  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Global Solar Opportunity Tool: A Tool for Policy Makers and Energy Analysts Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Global Solar Opportunity Tool: A Tool for Policy Makers and Energy Analysts Focus Area: Solar Topics: Potentials & Scenarios Website: cleanenergysolutions.org/tools/solar Equivalent URI: cleanenergysolutions.org/content/global-solar-opportunity-tool-tool-po Language: English The Global Solar Opportunity Tool enables analysis and visualization of the technical and economic potential for solar electric technologies ranging

177

Keyboard Acoustic Emanations Scott Leishman  

E-Print Network (OSTI)

of this step is the matrix. After that, the Viterbi algorithm [11] is used to infer qi, i.e. the best sequenceKeyboard Acoustic Emanations Scott Leishman ML Tea Talk - May 3rd, 2006 1 (or why you shouldn

Roweis, Sam

178

Acoustic Energy and Stellar Models  

Science Journals Connector (OSTI)

... the thermodynamic limitations of the generation of acoustic energy in stars. Quite recently, M. Schwarzschild and R. S. Richardson suggested that the transfer of energy in stars may, ... a heat engine, and this consideration does not support the views expressed by Richardson and Schwarzschild in dealing with the stellar model of red giants. In this model they suggest ...

1949-08-20T23:59:59.000Z

179

E-Print Network 3.0 - acoustic oscillation signature Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

47 ACOUSTICAL EFFECTS OF INTERNAL TIDES ACOUSTICAL EFFECTS OF INTERNAL TIDES ON SHALLOW WATER Summary: ACOUSTICAL EFFECTS OF INTERNAL TIDES ACOUSTICAL EFFECTS OF INTERNAL TIDES...

180

Processing dipole acoustic logging data to image fracture network in shale gas reservoirs  

Science Journals Connector (OSTI)

A recent advance in borehole remote acoustic reflection imaging is the utilization of a dipole acoustic system in a borehole to emit and receive elastic waves to and from a remote geologic reflector in formation. An important application of this new technique is the delineation of fracture network in shale gas reservoirs as interest and activities in shale gas exploration increase in China. We develop a data processing procedure and implement it to handle routine processing of dipole acoustic logging data. The procedure takes into account the characteristics of the dipole data such as frequency dispersion attenuation recording length and dipole source orientation etc. to obtain an image of reflectors within 20~30 meters around the borehole. We have applied the technique to process dipole acoustic data from several wells drilled into gas reservoirs in China. The obtained images clearly identify major fracture network in the gas producing intervals of the reservoir demonstrating the effectiveness of the imaging technique.

Zhuang Chunxi; Su Yuanda; Tang Xiaoming

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Measuring the effects of acoustical environments on nurses in health?care facilities: A pilot study.  

Science Journals Connector (OSTI)

This paper summarizes the methods and results of a pilot ecological study conducted in four health?care facilities (acute?care community?care and long?term?care). The objective was to consolidate and test tools for exposure assessment and the investigation of study outcomes in particular stress. Area and personal monitoring was performed. Nurse noise exposures were monitored. Full?shift monitoring of sound levels was performed and conventional acoustical parameters derived; new acoustical descriptors including occurrence rate and peakiness were also determined. Two questionnaire scales were developed: a study questionnaire to assess perception of the acoustical environment and of work? and noise?related stresses and a daily diary to capture variations in the perceived stress and document aggressive events. The study questionnaire was found to measure disturbance impaired communication and mental fatigue. Biological markers of noise?related stress (salivary cortisol and heart?rate variability) were collected. Exposure measures were correlated with outcomes; while the results were often not statistically significant due to small sample sizes they identified interesting relationships and validated the measurement tools for future use. Long?term?care was identified as the most acoustically?critical environment both from a physical?acoustical perspective and from the perspective of workers.

Hind Sbihi; Murray Hodgson; George Astrakianakis; Pamela Ratner

2011-01-01T23:59:59.000Z

182

Science Search Tools | OSTI, US Dept of Energy, Office of Scientific...  

Office of Scientific and Technical Information (OSTI)

Science Search Tools DOE Collections | Journal Sources | Library Tools | U.S. Federal Agencies | Global Databases | Customized Resources OSTI fulfills Department of Energy...

183

EERE's State & Local Energy Data Tool  

SciTech Connect

EERE's State and Local Energy Data (SLED) Tool provides basic energy market information that can help state and local governments plan and implement clean energy projects, including electricity generation; fuel sources and costs; applicable policies, regulations, and financial incentives; and renewable energy resource potential. Watch this video to learn more about the tool and hear testimonials from real users about the benefits of using this tool.

Shambarger, Erick; DeCesaro, Jennifer

2014-06-23T23:59:59.000Z

184

EERE's State & Local Energy Data Tool  

ScienceCinema (OSTI)

EERE's State and Local Energy Data (SLED) Tool provides basic energy market information that can help state and local governments plan and implement clean energy projects, including electricity generation; fuel sources and costs; applicable policies, regulations, and financial incentives; and renewable energy resource potential. Watch this video to learn more about the tool and hear testimonials from real users about the benefits of using this tool.

Shambarger, Erick; DeCesaro, Jennifer

2014-06-26T23:59:59.000Z

185

Cylindrical acoustic levitator/concentrator  

DOE Patents (OSTI)

A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. It is constructed from a commercially available, hollow cylindrical piezoelectric crystal which has been modified to tune the resonance frequency of the breathing mode resonance of the crystal to that of the interior cavity of the cylinder. When the resonance frequency of the interior cylindrical cavity is matched to the breathing mode resonance of the cylindrical piezoelectric transducer, the acoustic efficiency for establishing a standing wave pattern in the cavity is high. The cylinder does not require accurate alignment of a resonant cavity. Water droplets having diameters greater than 1 mm have been levitated against the force of gravity using; less than 1 W of input electrical power. Concentration of aerosol particles in air is also demonstrated.

Kaduchak, Gregory (Los Alamos, NM); Sinha, Dipen N. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

186

Acoustic behavior of triple glazings  

Science Journals Connector (OSTI)

Making of triple glazings is the only way to still improve thermal performances of Insulating Glass Units. Possible ways with double glazings are already in use: increase the space between glasses use low emissivity coatings and special gas with lower thermal conductivity as argon or krypton. Specific acoustic weak point of double glazings is the resonance between the two panes which works as a mass spring mass system and coupling of eigenmodes of panes through the air (gas) cavity. These phenomena are of course still more important with triple glazings as there are two resonances. The paper will give all comparative data concerning thermal and acoustic performances and describe a way to achieve the same single number values of sound transmission loss with triple glazing that with double glazing by adding absorption in the gas cavities.

Marc Rehfeld; David Fournier

2008-01-01T23:59:59.000Z

187

Acoustic characteristics of English fricatives  

E-Print Network (OSTI)

of noise spectrum, while there are some data suggesting that /f,v/ may be distin- guished from /Y,Z/ on the basis of transition information.a!Electronic mail: jongman@ukans.edu 1252 1252J. Acoust. Soc. Am. 108 (3), Pt. 1, Sep 2000 0001...! Variance ~MHz! Skewness Kurtosis /f,v/ 5108 6.37 0.077 2.11 /T,D/ 5137 6.19 20.083 1.27 /s,z/ 6133 2.92 20.229 2.36 /S,Z/ 4229 3.38 0.693 0.421257 J. Acoust. Soc. Am., Vol. 108, No. 3, Pt. 1, Sep 2000with h2 ranging from 0.001 for skewness to 0.004 for spec...

Jongman, Allard; Wayland, Ratree; Wong, Serena

2000-09-01T23:59:59.000Z

188

Vertical axis wind turbine acoustics  

E-Print Network (OSTI)

Vertical Axis Wind Turbine Acoustics Charlie Pearson Corpus Christi College Cambridge University Engineering Department A thesis submitted for the degree of Doctor of Philosophy September 2013 Declaration Described in this dissertation is work... quickly to changing wind conditions, small- scale vertical axis wind turbines (VAWTs) have been proposed as an efficient solution for deployment in built up areas, where the wind is more gusty in nature. If VAWTs are erected in built up areas...

Pearson, Charlie

2014-04-08T23:59:59.000Z

189

Achieving selective interrogation and sub-wavelength resolution in thin plates with embedded metamaterial acoustic lenses  

Science Journals Connector (OSTI)

In this study we present an approach to ultrasonic beam-forming and high resolution identification of acoustic sources having critical implications for applications such as structural health monitoring. The proposed concept is based on the design of dynamically tailored structural elements via embedded acoustic metamaterial lenses. This approach provides a completely new alternative to conventional phased-array technology enabling the formation of steerable and collimated (or focused) ultrasonic beams by exploiting a single transducer. Numerical results show that the ultrasonic beam can be steered by simply tuning the frequency of the excitation. Also the embedded lens can be designed to achieve sub-wavelength resolution to clustered acoustic sources which is a typical scenario encountered in incipient structural damage.

2014-01-01T23:59:59.000Z

190

COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO GEOTHERMAL  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO GEOTHERMAL FIELD, CA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO GEOTHERMAL FIELD, CA Details Activities (1) Areas (1) Regions (0) Abstract: Electrical and acoustic image logs collected from well 58A-10 in crystalline rock on the eastern margin of the Coso Geothermal Field, CA, reveal different populations of planar structures intersecting the borehole. Electrical image logs appear to be sensitive to variations in

191

Frustrated total internal reflection acoustic field sensor  

DOE Patents (OSTI)

A frustrated total internal reflection acoustic field sensor which allows the acquisition of the acoustic field over an entire plane, all at once. The sensor finds use in acoustic holography and acoustic diffraction tomography. For example, the sensor may be produced by a transparent plate with transparent support members tall enough to support one or more flexible membranes at an appropriate height for frustrated total internal reflection to occur. An acoustic wave causes the membrane to deflect away from its quiescent position and thus changes the amount of light that tunnels through the gap formed by the support members and into the membrane, and so changes the amount of light reflected by the membrane. The sensor(s) is illuminated by a uniform tight field, and the reflection from the sensor yields acoustic wave amplitude and phase information which can be picked up electronically or otherwise.

Kallman, Jeffrey S. (Pleasanton, CA)

2000-01-01T23:59:59.000Z

192

Acoustic Logs At Steamboat Springs Area (Combs, Et Al., 1999) | Open Energy  

Open Energy Info (EERE)

Steamboat Springs Area (Combs, Et Al., 1999) Steamboat Springs Area (Combs, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Acoustic Logs At Steamboat Springs Area (Combs, Et Al., 1999) Exploration Activity Details Location Steamboat Springs Area Exploration Technique Acoustic Logs Activity Date Usefulness useful DOE-funding Unknown Notes Two other Sandia instruments were used briefly: the acoustic borehole televiewer (BHTV) yielded wellbore images down to 520';and a Sandia memory tool gave pressuretemperature data for a shut-in test at the end of the project. Because no oriented core has been collected in this field, the televiewer images giving fracture direction were extremely M.ormative, but the BHTV could not be used at greater depths because of its temperature

193

Successfully merging architectural and electronic acoustical treatments  

Science Journals Connector (OSTI)

In enclosed volumes the integration of electronic acoustical components with architectural surface treatments forms a hybrid system that produces the perceived acoustical conditions. Since the underlying operating principles for electro-acoustic enhancement systems differs considerably between manufacturers the requirements for system infrastructure are not germane nor is the optimum integration of architectural treatments. As a result the nature of the work performed by the acoustical consultant changes to accommodate optimum performance of the specific “hybrid” system which may also include other forms of variable treatments.

Steve Barbar

2011-01-01T23:59:59.000Z

194

Surface acoustic wave for microfluidic applications.  

E-Print Network (OSTI)

??Surface acoustic wave-based (SAW) microfluidics attracts attention from microfluidic research community due to its simple fabrication, large force and fast, yet efficient operation. The scope… (more)

Luong, Trung Dung.

2012-01-01T23:59:59.000Z

195

Acoustic Concentration Of Particles In Fluid Flow  

NLE Websites -- All DOE Office Websites (Extended Search)

in a fluid flow includes a substantially acoustically transparent membrane and a vibration generator that define a fluid flow path therebetween. Available for thumbnail of...

196

Acoustic resonance for nonmetallic mine detection  

SciTech Connect

The feasibility of acoustic resonance for detection of plastic mines was investigated by researchers at the Oak Ridge National Laboratory`s Instrumentation and Controls Division under an internally funded program. The data reported in this paper suggest that acoustic resonance is not a practical method for mine detection. Representative small plastic anti-personnel mines were tested, and were found to not exhibit detectable acoustic resonances. Also, non-metal objects known to have strong acoustic resonances were tested with a variety of excitation techniques, and no practical non-contact method of exciting a consistently detectable resonance in a buried object was discovered. Some of the experimental data developed in this work may be useful to other researchers seeking a method to detect buried plastic mines. A number of excitation methods and their pitfalls are discussed. Excitation methods that were investigated include swept acoustic, chopped acoustic, wavelet acoustic, and mechanical shaking. Under very contrived conditions, a weak response that could be attributed to acoustic resonance was observed, but it does not appear to be practical as a mine detection feature. Transfer properties of soil were investigated. Impulse responses of several representative plastic mines were investigated. Acoustic leakage coupling, and its implications as a disruptive mechanism were investigated.

Kercel, S.W.

1998-04-01T23:59:59.000Z

197

Numerical Modeling of Acoustic Timescale Detonation Initiation Using the Adaptive  

E-Print Network (OSTI)

Numerical Modeling of Acoustic Timescale Detonation Initiation Using the Adaptive Wavelet 2008 #12;This thesis entitled: Numerical Modeling of Acoustic Timescale Detonation Initiation Using. (Ph.D.) Numerical Modeling of Acoustic Timescale Detonation Initiation Using the Adaptive Wavelet

Vasilyev, Oleg V.

198

Physiological Bases of Acoustic LRT in Nonstutterers, Mild  

E-Print Network (OSTI)

Physiological Bases of Acoustic LRT in Nonstutterers, Mild Stutterers, and Severe Stutterers* Ben C stutterers' prolonged acoustic laryngeal reaction time (LRT) values. Prephonatory kinematic data were foreperiods. Acoustic data replicated a previously observed composite stuttering severity and foreperiod

199

Building Energy Software Tools Directory: CPF Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

CPF Tools CPF Tools CPF Tools logo CPF Tools is the market-leading software for solar installers connecting sales, system design and financing. Screen Shots Keywords Solar Sales, Quoting Tool, Proposal Tool, Solar Financing, Leads, Auto-Populate, Rebate Form, CRM software, Customer and Financing Dashboard Validation/Testing None Expertise Required Basic understanding of PV. Training is provided through our help site, which features training videos, a user community through Get Satisfaction, and user guides. We also offer live phone support and regular training webinars. Users More than 2,000 Audience Solar professionals, including installers, sales representatives, operations and system design specialists. We also offer a "Channel Manager" version of CPF Tools for manufacturers and distributors.

200

Measurements of the temporal, spatial, and frequency stability of an underwater acoustic channel  

Science Journals Connector (OSTI)

Measurements of the stability of an underwater acoustic channel were made at long range (500 km) and relatively low acoustic frequency (206 Hz). The source depth and depth of the two receiving hydrophones were carefully chosen to limit the number of totally refracted acoustic paths. In addition a discrete spectrum coded waveform was transmitted to allow time domain resolution of refracted and reflected arrivals. The results show considerably less channel time spreading than is predicted by recent theoreticalmodels and indicate that coherence bandwidths of 100 Hz are obtainable with proper source and receiver geometry. Received pulses wander systematically with changes in acoustic path length strongly influenced by energy at the frequency of the semidiurnal tide. The spatialcoherence of signals propagated to two receivers separated by 250 m indicates that acoustic paths are similarly modulated by ocean processes with frequencies below the Brunt–Väisälä internal wave cut?off. Above the Brunt–Väisälä frequency coherence is small indicating that processes with space scales much less than 250 m are responsible for path length fluctuations.

W. Jobst; L. Dominijanni

1979-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Building Energy Software Tools Directory: ECOTECT  

NLE Websites -- All DOE Office Websites (Extended Search)

ECOTECT ECOTECT ECOTECT logo. Complete environmental design tool which couples an intuitive 3D modelling interface with extensive solar, thermal, lighting, acoustic and cost analysis functions. ECOTECT is one of the few tools in which performance analysis is simple, accurate and most importantly, visually responsive. ECOTECT is driven by the concept that environmental design principles are most effectively addressed during the conceptual stages of design. The software responds to this by providing essential visual and analytical feedback from even the simplest sketch model, progressively guiding the design process as more detailed information becomes available. The model is completely scalable, handling simple shading models to full-scale cityscapes. Its extensive export facilities also make final design

202

ACOUSTICAL IMAGING AND MECHANICAL PROPERTIES OF SOFT ROCK AND MARINE SEDIMENTS  

SciTech Connect

The research during this project has concentrated on developing a correlation between rock deformation mechanisms and their acoustic velocity signature. This has included investigating: (1) the acoustic signature of drained and undrained unconsolidated sands, (2) the acoustic emission signature of deforming high porosity rocks (in comparison to their low porosity high strength counterparts), (3) the effects of deformation on anisotropic elastic and poroelastic moduli, and (4) the acoustic tomographic imaging of damage development in rocks. Each of these four areas involve triaxial experimental testing of weak porous rocks or unconsolidated sand and involves measuring acoustic properties. The research is directed at determining the seismic velocity signature of damaged rocks so that 3-D or 4-D seismic imaging can be utilized to image rock damage. These four areas of study are described in the report: (1) Triaxial compression experiments have been conducted on unconsolidated Oil Creek sand at high confining pressures. (2) Initial experiments on measuring the acoustic emission activity from deforming high porosity Danian chalk were accomplished and these indicate that the AE activity was of a very low amplitude. (3) A series of triaxial compression experiments were conducted to investigate the effects of induced stress on the anisotropy developed in dynamic elastic and poroelastic parameters in rocks. (4) Tomographic acoustic imaging was utilized to image the internal damage in a deforming porous limestone sample. Results indicate that the deformation damage in rocks induced during laboratory experimentation can be imaged tomographically in the laboratory. By extension the results also indicate that 4-D seismic imaging of a reservoir may become a powerful tool for imaging reservoir deformation (including imaging compaction and subsidence) and for imaging zones where drilling operation may encounter hazardous shallow water flows.

Thurman E. Scott, Jr.; Younane Abousleiman

2004-04-01T23:59:59.000Z

203

Climate Analysis Indicators Tool (CAIT) | Open Energy Information  

Open Energy Info (EERE)

Climate Analysis Indicators Tool (CAIT) Climate Analysis Indicators Tool (CAIT) (Redirected from Climate Analysis Indicators Tool) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: WRI Climate Analysis Indicators Tool Agency/Company /Organization: World Resources Institute Sector: Climate, Energy, Land Topics: GHG inventory Resource Type: Dataset, Software/modeling tools User Interface: Website Website: cait.wri.org/ Language: English WRI Climate Analysis Indicators Tool Screenshot References: Climate Analysis Indicators Tool[1] CAIT is the Climate Analysis Indicators Tool -- an information and analysis tool on global climate change. It provides a comprehensive and comparable database of greenhouse gas emissions data (including all major sources and sinks) and other climate-relevant indicators. CAIT can be used to analyze a

204

Oblique ion acoustic shock waves in a magnetized plasma  

SciTech Connect

Ion acoustic (IA) shock waves are studied in a magnetized plasma consisting of a cold viscous ion fluid and Maxwellian electrons. The Korteweg–de Vries–Burgers equation is derived by using the reductive perturbation method. It is shown that the combined effects of external magnetic field and obliqueness significantly modify the basic properties (viz., amplitude, width, speed, etc.) of the IA shock waves. It is observed that the ion-viscosity is a source of dissipation, and is responsible for the formation of IA shock structures. The implications of our results in some space and laboratory plasma situations are discussed.

Shahmansouri, M. [Department of Physics, Faculty of Science, Arak University, Arak 38156-8 8349 (Iran, Islamic Republic of)] [Department of Physics, Faculty of Science, Arak University, Arak 38156-8 8349 (Iran, Islamic Republic of); Mamun, A. A. [Department of Physics, Jahangirnagar University, Savar, Dhaka-1342 (Bangladesh)] [Department of Physics, Jahangirnagar University, Savar, Dhaka-1342 (Bangladesh)

2013-08-15T23:59:59.000Z

205

Acoustical Communications for Wireless Downhole Telemetry Systems  

E-Print Network (OSTI)

on this testbed in order to characterize the channel behavior are explained as well. Moreover, the large scale statistics of the acoustic waves along the pipe string are described. Results of this work indicate that acoustic waves experience a frequency- dependent...

Farraj, Abdallah

2012-08-22T23:59:59.000Z

206

ACOUSTIC FORMING FOR ENHANCED DEWATERING AND FORMATION  

SciTech Connect

The next generation of forming elements based on acoustic excitation to increase drainage and enhances formation both with on-line control and profiling capabilities has been investigated in this project. The system can be designed and optimized based on the fundamental experimental and computational analysis and investigation of acoustic waves in a fiber suspension flow and interaction with the forming wire.

Cyrus K Aidun

2007-11-30T23:59:59.000Z

207

Multiresolution Reproducing Kernel Particle Methods in Acoustics  

E-Print Network (OSTI)

, and reliability of dynamic analysis. This is of great importance because the noise prediction of a complexMultiresolution Reproducing Kernel Particle Methods in Acoustics R. A. Uras Reactor Engineering In the analysis of complex phenomena of acoustic systems, the computational model­ ing requires special attention

Liu, Wing Kam

208

R. White, Comsol Acoustics Introduction, 2012  

E-Print Network (OSTI)

R. White, Comsol Acoustics Introduction, © 2012 Tutorial Created in Comsol 4.3 (2012) #12;R. White Variables ­ space and time (x,y,z,t) Dependent Variables ­ unknown field (such as u) #12;R. White, Comsol (such as u) #12;R. White, Comsol Acoustics Introduction, © 2012 Finite Element Analysis (FEA / FEM) ­ 1

White, Robert D.

209

Acoustics of technology enabled collaborative learning environments.  

Science Journals Connector (OSTI)

Collaborative classrooms and workstations are increasingly common in higher education buildings. These spaces present unique acoustical challenges that force designers to rethink traditional concepts and solutions. In student?centered classrooms the lecturer is removed as the visual and acoustical center of attention. Instead students are seated in groups around technology enabled workstations often facing away from the lecturer and other students. Acoustical conditions must support small?group interaction classroom discussion and learning via multimedia content. Outside the classroom collaborative workstations vary greatly but typically facilitate small?group interaction around a multimedia display and/or work surface. To promote impromptu use by students these spaces are often open to highly public areas of learning commons classroom buildings and digital libraries. Traditional noise control solutions fail to isolate these spaces without compromising their spontaneous feel and function. Despite obvious acoustical challenges both space types will continue to proliferate and new acoustical solutions must be developed.

Gregory A. Coudriet; Jeffery E. Babich

2010-01-01T23:59:59.000Z

210

Dynamic analysis of shells of revolution submerged in an acoustic medium by the finite element method  

E-Print Network (OSTI)

of the spherical shell transformation matrix relating (q} and (u) for an element generalized added mass matrix due to radiated pressure matrix relating (q) and (I) for an element unknown source strength velocity of sound in fluid coupled equivalent nodal load... A method 1s presented for the evaluation of the displacements and the surface pressure which are induced by the harmonic exc1tation of a shell of revolution submerged in an acoustic medium. The method utilizes a source distribution approach...

Ng, Chi Kin

1978-01-01T23:59:59.000Z

211

Panama City 2003 Acoustic Coherence Experiments: Low Frequency Bottom Penetration Fluctuation Measurements in a Multipath Environment  

Science Journals Connector (OSTI)

This paper is part of a series of papers describing acoustic coherence and fluctuations measurements made by the Naval Research Laboratory in the Gulf of Mexico near Panama City Beach FL during June 2003. This paper presents low frequency (1–10 kHz) buried hydrophone measurements and preliminary results for two source?receiver ranges with grazing angles less than two degrees (realtive to the direct?path to the seafloor at the receiver location). Results focus on fluctuations after acoustic penetration into the sediment. These fluctuations are correlated with environmental influences.

Roger W. Meredith; E. Ted Kennedy; Robert A. Fisher; Robert Brown; Steve Stanic

2004-01-01T23:59:59.000Z

212

On the sound field from a moving source in a viscous medium Michael J. Buckinghama)  

E-Print Network (OSTI)

for measuring the speed of sound in a marine sediment. The acoustic coupling across the air­sea interface, southern California6,7 in which a propeller-driven light aircraft was used as an acoustic source to the speed of sound in the local medium where the receiver is located, that is, the sedi- ment in the case

Buckingham, Michael

213

Acoustical considerations in design and construction of Turkish Contractors Association headquarters  

Science Journals Connector (OSTI)

A LEED candidate building of Turkish Contractors Association Headquarters is a prestige building located in Ankara the project and construction of which is sponsored by leading contractor companies of Turkey. As it represents the status of Turkish construction industry from concept phase to the very recent inauguration of the building the major consideration has been the application of latest technology and concepts such as sustainability within the scheme of building that can pioneer future works in the field. Chilled beam ventilation is one example of new technologies applied in the building system design that takes into account high energy efficiency with minimum use of fuel or natural sources. In acoustical terms the building envelope and structural members together with interior and environmental noise sources in relation to the building services are studied. In order to provide acoustical comfort levels in acoustically sensitive spaces and to control noise and vibration at the source and sound paths materials and methods are developed. Specifically acoustical interventions and solutions proposed for multi-purpose hall offices board and meeting rooms foyers mechanical rooms roof-top units and generators located close by at the site are discussed within the context of this paper.

2014-01-01T23:59:59.000Z

214

Doppler effects in heterogeneous media with applications to ocean acoustic modeling  

Science Journals Connector (OSTI)

Doppler shift corrections to ocean acoustic signals are complicated by the multi-spatial-scale structure of the ocean medium, resulting in a multi-time-scale structure of the acoustic Green function. Repeated reflections and refractions lead in general to an infinite number of acoustic paths or modes, with different times of flight, connecting source and receiver. The rate of change of these flight times with source or receiver motion gives rise to Doppler shift corrections, and each acoustic path or mode has a different correction. A clean Doppler correction (in the sense of an observable coherent motion-induced frequency shift for each path or mode) is shown to emerge only when the medium is homogeneous along the direction of source or receiver motion, even when it is highly inhomogeneous in directions orthogonal to the motion. A very general quantitative theory for this correction is developed, encompassing earlier results in the literature, and presented in a form amenable to efficient numerical implementation in data processing.

Peter B. Weichman

2005-12-06T23:59:59.000Z

215

R. White, Comsol Acoustics Introduction, 2/25/08  

E-Print Network (OSTI)

R. White, Comsol Acoustics Introduction, 2/25/08 #12;R. White, Comsol Acoustics Introduction, 2,y,z,t) Dependent Variables ­ unknown field (such as u) #12;R. White, Comsol Acoustics Introduction, 2/25/08 Finite ­ space and time (x,y,z,t) Dependent Variables ­ unknown field (such as u) #12;R. White, Comsol Acoustics

White, Robert D.

216

System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole  

DOE Patents (OSTI)

In some aspects of the disclosure, a method for creating three-dimensional images of non-linear properties and the compressional to shear velocity ratio in a region remote from a borehole using a conveyed logging tool is disclosed. In some aspects, the method includes arranging a first source in the borehole and generating a steered beam of elastic energy at a first frequency; arranging a second source in the borehole and generating a steerable beam of elastic energy at a second frequency, such that the steerable beam at the first frequency and the steerable beam at the second frequency intercept at a location away from the borehole; receiving at the borehole by a sensor a third elastic wave, created by a three wave mixing process, with a frequency equal to a difference between the first and second frequencies and a direction of propagation towards the borehole; determining a location of a three wave mixing region based on the arrangement of the first and second sources and on properties of the third wave signal; and creating three-dimensional images of the non-linear properties using data recorded by repeating the generating, receiving and determining at a plurality of azimuths, inclinations and longitudinal locations within the borehole. The method is additionally used to generate three dimensional images of the ratio of compressional to shear acoustic velocity of the same volume surrounding the borehole.

Vu, Cung; Nihei, Kurt T.; Schmitt, Denis P.; Skelt, Christopher; Johnson, Paul A.; Guyer, Robert; TenCate, James A.; Le Bas, Pierre-Yves

2013-01-01T23:59:59.000Z

217

Acoustic emission monitoring of steam turbines. Final report  

SciTech Connect

Experience over several years with on-line monitoring of steam turbines, supported by relevant laboratory studies, has led to a clearer understanding of the conditions under which acoustic emission (AE) due to turbine shaft cracking can be detected. To overcome problems associated with the noisy environment, efforts have been directed at improving the AE signal discrimination capabilities of the monitoring electronics. These efforts have been guided by extensive measurements of the amplitude, frequency and time dependence of normal turbine noises in a variety of operating conditions. Similar measurements have been made in the laboratory to determine the characteristics of AE due to crack growth in rotor steels with several loading conditions and temperatures. Along with determinations of the attenuation and wave propagation characteristics of simulated AE in the rotor shafts, these measurements have permitted estimates of the detectability of AE due to crack growth under various conditions, should it occur. An essential part of the proposed monitoring will be determining the source locations and characteristics of ''normal'' operating noise and developing time histories of these sources so that when ''abnormal'' crack growth AE occurs, it will be recognized. The time histories of the ''normal'' operating noises may also reveal other potentially damaging conditions such as lubricating oil contamination, bearing wear, out-of-balance condition, loose turbine disks, blade cracking or rubbing and impingement of exfoliation particles or water droplets, each of which is known or expected to have a characteristic acoustic signature. 17 refs., 23 figs., 8 tabs.

Randall, R.L.; Hong, C.; Graham, L.J.

1986-02-01T23:59:59.000Z

218

22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 1 Kinetic theory of Geodesic Acoustic  

E-Print Network (OSTI)

22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 1 Kinetic theory of Geodesic Acoustic Zonca, Liu Chen and Zhiyong Qiu #12;22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 2 Chen and Zhiyong Qiu #12;22nd IAEA-FEC Kinetic theory of Geodesic Acoustic Modes: ... 3 2 Linear

Zonca, Fulvio

219

Writing magnetic patterns with surface acoustic waves  

SciTech Connect

A novel patterning technique that creates magnetization patterns in a continuous magnetostrictive film with surface acoustic waves is demonstrated. Patterns of 10??m wide stripes of alternating magnetization and a 3??m dot of reversed magnetization are written using standing and focusing acoustic waves, respectively. The magnetization pattern is size-tunable, erasable, and rewritable by changing the magnetic field and acoustic power. This versatility, along with its solid-state implementation (no moving parts) and electronic control, renders it as a promising technique for application in magnetic recording, magnonic signal processing, magnetic particle manipulation, and spatial magneto-optical modulation.

Li, Weiyang; Buford, Benjamin; Jander, Albrecht; Dhagat, Pallavi, E-mail: dhagat@eecs.oregonstate.edu [School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, Oregon 97331 (United States)

2014-05-07T23:59:59.000Z

220

Acoustic probing of salt using sonar  

E-Print Network (OSTI)

ACOUSTIC PROBING OF SALT USING SONAR A Thesis by KENNETH BRYAN BUTLER Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE Oecember 1977 Major Subject...: Geophysics ACOUSTIC PROBING OF SALT USING SONAR A Thesis by KENNETH BRYAN BUTLER Approved as to style and content by: C airman of Com ttee ea of e r nt em er ember December 1977 ABSTRACT Acoustic Probing of Salt Using Sonar. (December 1977...

Butler, Kenneth Bryan

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

SWERA/Analysis Tools | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » SWERA/Analysis Tools < SWERA Jump to: navigation, search SWERA logo.png Solar and Wind Energy Resource Assessment (SWERA) Analysis ToolsPowered by OpenEI Getting Started Data Sets Analysis Tools About SWERA OpenCarto OpenCarto houses the SWERA web based GIS application and provides the tools and data to support a variety of user communities in both small and large project planning, feasibility assessment, policy making, and decision support. The interface is designed to support collaboration across industries, geography, and research domains by providing interoperability

222

Mixed Mode Simulation Tools  

E-Print Network (OSTI)

with the whole building modeling tool, but the details ofused (e.g. whole building energy modeling or CAD tool),guide to modeling NV and MM buildings in the research or

Gandhi, Priya; Brager, Gail; Dutton, Spencer

2014-01-01T23:59:59.000Z

223

Effective Guidance and Tools  

Energy.gov (U.S. Department of Energy (DOE))

Top Innovations in this category include tools, software, and guides that have significantly influenced or changed design or construction practices. These include practical, hands-on resources as well as technical energy analysis tools.

224

AMO Software Tools  

Office of Energy Efficiency and Renewable Energy (EERE)

This presentation, hosted by the Advanced Manufacturing Office, provides an overview of tools and resources available for industrial energy management

225

Mixed Mode Simulation Tools  

E-Print Network (OSTI)

M. (2011). Assessment of natural and hybrid ventilationTools in the Assessment of Hybrid Natural/Mechanical

Gandhi, Priya; Brager, Gail; Dutton, Spencer

2014-01-01T23:59:59.000Z

226

Adjustable cutting tool holder  

SciTech Connect

This patent application describes a device for varying the geometry of a cutting tool for use in machining operations.

Steinhour, William Lee III; West, Drew; Honeycutt, Steve; Frank, Steven; Krishnamurthy, Kallutla

2000-09-21T23:59:59.000Z

227

Infrasound source location An automated method to estimate the location of infrasound sources  

E-Print Network (OSTI)

Waterstaat Delft University of Technology (DUT) Department of Earth Observation and Space Systems Acoustic Meteorologisch Instituut (KNMI) and three additional arrays located in Germany and France. The estimated source for a spherical earth. Extensive filtering is applied to clean the data from as much noise and signals from local

Evers, Läslo G.

228

Category:Community Energy Tools | Open Energy Information  

Open Energy Info (EERE)

Tools Tools Jump to: navigation, search Pages in category "Community Energy Tools" The following 123 pages are in this category, out of 123 total. A AGI-32 Alternative Fuel and Advanced Technology Vehicles Pilot Program Emissions Benefit Tool Alternative Fueling Station Locator Alternative Fueling Station Locator - Mobile Alternative Fuels and Advanced Vehicles Data Center B BCHP Screening Tool BEopt Biomass Boiler and Furnace Emissions and Safety Regulations in the Northeast States Biomass Crop Assistance Program (BCAP) Biomass Power Association (BPA) Biomass Thermal Energy Council (BTEC) Building Energy Tools Software Directory Building Life-Cycle Cost (BLCC) Program C Calculating CO2 Emissions from Mobile Sources California Biomass Collaborative Energy Cost Calculators

229

Study on acoustics for SSC measurements Using the acoustic Doppler current profiler (ADCP) to  

E-Print Network (OSTI)

................................................................................................................................. 1 2. Background of higher- frequency, acoustic backscatterance sensors (ABS, for a review see Thorne and Hanes, 2002), and optical backscatterance sensors (OBS), whose sample ranges ar

Voulgaris, George

230

.JETEQUIPMENT &TOOLS OPERATOR'S MANUAL  

E-Print Network (OSTI)

.JETEQUIPMENT &TOOLS OPERATOR'S MANUAL JDP-14J/14M/17M/14JF/14 MF/17MF DRILL PRESS Stock No. .JET-6000 FAX[253] 939-8001 #12;OPERATINGINSTRUCTIONS Before operating the unit, please read this manual workpiece. 7. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for the best and safest performance

Kleinfeld, David

231

E-Print Network 3.0 - acoustic energy-driven fluid Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

search results for: acoustic energy-driven fluid Page: << < 1 2 3 4 5 > >> 1 Acoustic Identification of Unknown Fluids Summary: Acoustic Identification of Unknown Fluids...

232

E-Print Network 3.0 - acoustic field evaluation Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

nanoparticles using bulk acoustic waves Bart Raeymaekers,a Summary: nanoparticles a one dimensional acoustic field and b two-dimensional acoustic field. 014317-2 Raeymaekers......

233

Alternative acoustic environments for the generation of reverberation  

Science Journals Connector (OSTI)

The musicians and engineers who create popular recorded music view reverberation as a signal processingeffect to be added to any and all elements of a multitrack production. Devices such as digital reverbs spring reverbs and plate reverbs are tools of the recording trade synthesizing reverblike sounds for performance through loudspeakers. Acoustic reverberation makes its way into recorded music through the use of a reverb chamber. A small room is used to generate reverb. With cubic volume well below that of a performance hall it works the ‘‘other side’’ of the Sabine equation being built of highly sound reflective materials. A purpose?built room for the generation of reverb is a luxury not many studios can afford. Clever use of stairwells bathrooms and basements is easier on the recording studios balance sheet. This work evaluates the repurposing of these alternative spaces for the generation of reverb in popular recorded music.

2004-01-01T23:59:59.000Z

234

Surface acoustic wave dust deposition monitor  

DOE Patents (OSTI)

A system is disclosed for using the attenuation of surface acoustic waves to monitor real time dust deposition rates on surfaces. The system includes a signal generator, a tone-burst generator/amplifier connected to a transmitting transducer for converting electrical signals into acoustic waves. These waves are transmitted through a path defining means adjacent to a layer of dust and then, in turn, transmitted to a receiving transducer for changing the attenuated acoustic wave to electrical signals. The signals representing the attenuated acoustic waves may be amplified and used in a means for analyzing the output signals to produce an output indicative of the dust deposition rates and/or values of dust in the layer. 8 figs.

Fasching, G.E.; Smith, N.S. Jr.

1988-02-12T23:59:59.000Z

235

Tiltrotor Acoustic Flight Test: Terminal Area Operations  

Science Journals Connector (OSTI)

This paper provides a comprehensive description of an acoustic flight test of the XV-15 Tiltrotor Aircraft with Advanced Technology Blades (ATB) conducted in August and September 1991 at Crows Landing, California. The purpose of this cooperative research ...

Maria O. L. Santa; Wellman J. B.; Conner D. A.; Rutledge C. K.

1992-06-01T23:59:59.000Z

236

Three-Dimensional Nonlinear Acoustical Holography  

E-Print Network (OSTI)

is validated by conducting an experiment with a compression driver and four numerical simulations. The numerical and experimental results show that holographically-projected acoustic fields match well with directly-calculated and directly-measured fields....

Niu, Yaying

2013-05-06T23:59:59.000Z

237

On observing acoustic backscattering from salinity turbulence  

Science Journals Connector (OSTI)

It has been hypothesized that at sufficiently high levels of oceanic salinity turbulence it should be possible to observe acoustic backscattering. However there have been limited in situmeasurements to confirm this hypothesis. Using an autonomous underwater vehicle equipped with upward and downward looking 1.2 MHz acoustic Doppler current profilers and with turbulence and fine scale sensors measurements were performed in a region of intense turbulence and a strong salinity gradient. The approach taken was to correlate variations in the backscattered acoustic intensity I with a theoretical acoustic backscattering cross section per volume for salinity turbulence ? s to obtain an estimated scattering cross section per volume ? e . Results indicated that of order 50% of the observed region was characterized by salinity turbulence induced backscattering.

Louis Goodman; Marcos M. Sastre-Córdova

2011-01-01T23:59:59.000Z

238

Multipurpose Acoustic Sensor for Downhole Fluid Monitoring  

Energy.gov (U.S. Department of Energy (DOE))

Novel sensor design based on acoustics. Determine in real-timeand in a single sensor packagemultiple parameters: temperature, pressure, fluid flow; and fluid properties, such as density, viscosity, fluid composition.

239

Performance bounds on matched-field methods for source localization and estimation of ocean environmental parameters  

E-Print Network (OSTI)

Matched-field methods concern estimation of source location and/or ocean environmental parameters by exploiting full wave modeling of acoustic waveguide propagation. Typical estimation performance demonstrates two fundamental ...

Xu, Wen, 1967-

2001-01-01T23:59:59.000Z

240

Magneto?Acoustic Interaction in Mercury  

Science Journals Connector (OSTI)

The magnetically induced acoustic absorption coefficient in liquidmercury has been measured around its inverse relaxation frequency using an on?line computer and magnetic fields of up to 10 kg. The hybrid computer?operated differential measuring system took between 2560 and 25 600 experiments per run. The results agree with Anderson's predictions [J. Acoust. Soc. Amer. 25 529 (1953)]. [Work supported in part by the National Science Foundation.

Thomas D. Sachs; Gregory P. Hughes

1969-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Acoustic Energy Storage in Single Bubble Sonoluminescence  

E-Print Network (OSTI)

Single bubble sonoluminescence is understood in terms of a shock focusing towards the bubble center. We present a mechanism for significantly enhancing the effect of shock focusing, arising from the storage of energy in the acoustic modes of the gas. The modes with strongest coupling are not spherically symmetric. The storage of acoustic energy gives a framework for understanding how light intensities depend so strongly on ambient gases and liquids and suggests that the light intensities of successive flashes are highly correlated.

Michael P. Brenner; Sascha Hilgenfeldt; Detlef Lohse; Rodolfo R. Rosales

1996-05-07T23:59:59.000Z

242

Ocean acoustic noise budgets: Application to the environmental assessment of offshore wind power generation.  

Science Journals Connector (OSTI)

A noise budget is a listing of the various sources of acoustic noise and their associated ranking by importance. A number of different types of budgets can be conceived using various acoustic measures such as intensity energy or duration of maximum amplitude level. These budgets are typically parameterized by frequency and are usually computed over 1/3 octave bands. As part of the environmental assessment of the proposed offshore wind powergeneration project under the Rhode Island Special Area Management Plan (SAMP) noise measurements were made using the Passive Acoustic Listener (PAL) systems off the coast of Rhode Island prior to the installation of any wind power facilities. Two PALs were deployed within two miles of Block Island in water depths of 20 m from October 6 to November 11 2008. The data included noise spectra and source identification every 3 min. Short snapshots of unusual sounds were also recorded. From this data the ocean acoustic noise budget is computed with contributions from shipping wind/waves marine mammals and rain from 500 Hz to 50 kHz. The shipnoise data is correlated with ship traffic data from the Automatic Identification System (AIS). [Funding provided by the Rhode Island Office of Energy Resources.

2009-01-01T23:59:59.000Z

243

High?frequency acoustic propagation measurements during solitary wave events on the eastern continental shelf edge  

Science Journals Connector (OSTI)

High?frequency environmental acoustics studies were conducted during July 1993 on the continental shelf edge east of New Jersey. Internal solitons previously observed in this region near the shelf/slope front propagate in packets usually in the summer seasonal thermocline and have been associated with anomalous low frequency sound propagation. Acoustic pings were collected using a towed sled instrumented with sonar arrays. Synoptic measurements to characterize the solitons including sound velocity profiles sampled every 10 min over a tidal cycle and moored data including current temperature and conductivity. Acoustic measurements were taken during sled tows parallel to the bottom bathymetry normal to the propagation direction over a region determined from bottom cores to be nearly homogeneous fine sand. Measurements were taken using the sled as a source for backscattermeasurements and also using moored acoustic sources and the sled based transducers as receivers. The observed solitons had amplitudes of approximately 10 m and periods of several minutes. The backscatter variability during soliton events was observed to approximately 10–20 dB and will be compared to modeled predictions based on environmental data.

Edward R. Levine; Richard R. Shell; Michael R. Medeiros

1994-01-01T23:59:59.000Z

244

Tunable damper for an acoustic wave guide  

DOE Patents (OSTI)

A damper for tunably damping acoustic waves in an ultrasonic waveguide is provided which may be used in a hostile environment such as a nuclear reactor. The area of the waveguide, which may be a selected size metal rod in which acoustic waves are to be damped, is wrapped, or surrounded, by a mass of stainless steel wool. The wool wrapped portion is then sandwiched between tuning plates, which may also be stainless steel, by means of clamping screws which may be adjusted to change the clamping force of the sandwiched assembly along the waveguide section. The plates are preformed along their length in a sinusoidally bent pattern with a period approximately equal to the acoustic wavelength which is to be damped. The bent pattern of the opposing plates are in phase along their length relative to their sinusoidal patterns so that as the clamping screws are tightened a bending stress is applied to the waveguide at 180/sup 0/ intervals along the damping section to oppose the acoustic wave motions in the waveguide and provide good coupling of the wool to the guide. The damper is tuned by selectively tightening the clamping screws while monitoring the amplitude of the acoustic waves launched in the waveguide. It may be selectively tuned to damp particular acoustic wave modes (torsional or extensional, for example) and/or frequencies while allowing others to pass unattenuated.

Rogers, S.C.

1982-10-21T23:59:59.000Z

245

Climate Analysis Indicators Tool (CAIT) | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Climate Analysis Indicators Tool (CAIT) (Redirected from WRI Climate Analysis Indicators Tool) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: WRI Climate Analysis Indicators Tool Agency/Company /Organization: World Resources Institute Sector: Climate, Energy, Land Topics: GHG inventory Resource Type: Dataset, Software/modeling tools User Interface: Website Website: cait.wri.org/ Language: English WRI Climate Analysis Indicators Tool Screenshot References: Climate Analysis Indicators Tool[1] CAIT is the Climate Analysis Indicators Tool -- an information and analysis

246

Climate Analysis Indicators Tool (CAIT) | Open Energy Information  

Open Energy Info (EERE)

Climate Analysis Indicators Tool (CAIT) Climate Analysis Indicators Tool (CAIT) Jump to: navigation, search Tool Summary Name: WRI Climate Analysis Indicators Tool Agency/Company /Organization: World Resources Institute Sector: Climate, Energy, Land Topics: GHG inventory Resource Type: Dataset, Software/modeling tools User Interface: Website Website: cait.wri.org/ Language: English WRI Climate Analysis Indicators Tool Screenshot References: Climate Analysis Indicators Tool[1] CAIT is the Climate Analysis Indicators Tool -- an information and analysis tool on global climate change. It provides a comprehensive and comparable database of greenhouse gas emissions data (including all major sources and sinks) and other climate-relevant indicators. CAIT can be used to analyze a wide range of climate-related data questions and to help support future

247

Relationships between objective acoustic indices and acoustic comfort evaluation in nonacoustic spaces  

Science Journals Connector (OSTI)

Much attention has been paid to acoustic spaces such as concert halls and recording studios whereas research on nonacoustic buildings/spaces has been rather limited especially from the viewpoint of acoustic comfort. In this research a series of case studies has been carried out on this topic considering various spaces including shopping mall atrium spaces library reading rooms football stadia swimming spaces churches dining spaces as well as urban open public spaces. The studies focus on the relationships between objective acoustic indices such as sound pressure level and reverberation time and perceptions of acoustic comfort. The results show that the acoustic atmosphere is an important consideration in such spaces and the evaluation of acoustic comfort may vary considerably even if the objective acoustic indices are the same. It is suggested that current guidelines and technical regulations are insufficient in terms of acoustic design of these spaces and the relationships established from the case studies between objective and subjective aspects would be useful for developing further design guidelines. [Work supported partly by the British Academy.

Jian Kang

2004-01-01T23:59:59.000Z

248

Acoustics at University of Texas: History and current introductory course in physical acoustics.  

Science Journals Connector (OSTI)

As an academic discipline at the University of Texas acoustics began in the 1930s under C. Paul Boner in Physics and Lloyd A. Jeffress in Psychology. World War II saw Boner and many physicsgraduate students go to Harvard for “war work ” largely in underwater acoustics. When the war ended Boner returned and founded the Defense Research Laboratory later named Applied Research Laboratories. Interest in acoustics grew in Physics during the postwar years but eventually waned in the 1950s and 1960s. Acoustical activity developed in the 1960s in the College of Engineering chiefly Electrical Engineering and Mechanical Engineering. Today physical and engineering acoustics is a strong interdisciplinary program at Texas with faculty in several departments in Engineering and still a vestige in Physics. In addition much work on speech hearing and music is done in other parts of the University. Engineering features two basic courses in physical acoustics Acoustics I and II and five specialty courses which are described in an accompanying paper. Here we concentrate on Acoustics I and II which provide an introduction to propagation reflection and transmission refraction normal modes horn theory propagation in stratified fluids absorption and dispersion waveguides directional radiation diffraction and arrays.

David T. Blackstock

2010-01-01T23:59:59.000Z

249

Building Energy Software Tools Directory: Solar Tool  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar Tool Solar Tool Solar Tool logo. Makes the process of accurately sizing and positioning overhangs, shading devices and louvers easy. This software is a must for architects, planners and building services engineers, anyone who needs to quickly determine the extent of solar penetration into buildings, overshadowing or the most appropriate means of shading a window. The program uses a flexible, parametric model on which can be placed any number of horizontal, vertical and detached shades. You can select any date, time or location, seeing immediately the resulting shadows whilst interactively manipulating the geometry to show immediately the effects. You can also choose to automatically optimise the size and shape of any shading device over any range of dates and times you require. Screen Shots

250

Enterprise integration: A tool`s perspective  

SciTech Connect

The advent of sophisticated automation equipment and computer hardware and software is changing the way manufacturing is carried out. To compete in the global marketplace, manufacturing companies must integrate these new technologies into their factories. In addition, they must integrate the planning, control, and data management methodologies needed to make effective use of these technologies. This paper provides an overview of recent approaches to achieving this enterprise integration. It then describes, using simulation as a particular example, a new tool`s perspective of enterprise integration.

Polito, J. [Sandia National Labs., Albuquerque, NM (United States); Jones, A. [National Inst. of Standards and Technology, Gaithersburg, MD (United States); Grant, H. [National Science Foundation, Washington, DC (United States)

1993-06-01T23:59:59.000Z

251

Viscosity Effects in Acoustic Inductances  

Science Journals Connector (OSTI)

The linear acousticinductance and resistance of narrow circular tubes short compared to a wavelength have usually been represented by limiting formulas valid either for very low frequencies (viscous flow) or for relatively high frequencies (pistonlike displacement). Crandall's text gives a general mathematical development with particular stress on resistance but variation of inductance with frequency and viscosity has not been discussed generally nor has numerical reduction of mathematical results been generally available. The present paper describes quantitatively the dependence of inductance and resistance upon the general parameter radius times square root of the quantity density times frequency divided by viscosity. With increase of this parameter resistance increases while inductance diminishes from the “static” value to the limiting “high frequency” value. Experimental checks are made to ascertain whether resistance values are strongly affected by flow?transition end?effects found in hydraulics. Impedance?tube studies are made of five tube diameters from 0.0187 to 0.750 in. at 50 to 167 c/sec. Length/diameter is approximately 10 to render inductance end?corrections relatively small. Acoustic pressures are reduced until linear behavior appears. Measured resistance is generally within five percent of calculation as resistance increases to twice the “static” value. Measured inductance generally agrees with calculation within limits of the end?correction over the range of significant variation.

A. W. Nolle

1951-01-01T23:59:59.000Z

252

Information Resources: Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Tools Tools Below are links to tools that assist users with project planning and analysis. Residential Lighting Usage Estimate Tool The Residential Lighting Usage Estimate Tool is a companion to the report, "Residential Lighting End-Use Consumption Study," which developed a regional estimation framework within a national sample design that allows for the estimation of lamp usage and energy consumption. The tool contains the full set of estimates produced by methodology described in the study. Simple Modular LED Cost Model (LEDCOM) The LED Cost Model provides a simplified method for analyzing the manufacturing costs of an LED package, and enables those involved in the manufacture of LED packages to evaluate the relative impact of changes made at different points in the manufacturing process on the final LED package cost.

253

Machine tool locator  

DOE Patents (OSTI)

Machine tools can be accurately measured and positioned on manufacturing machines within very small tolerances by use of an autocollimator on a 3-axis mount on a manufacturing machine and positioned so as to focus on a reference tooling ball or a machine tool, a digital camera connected to the viewing end of the autocollimator, and a marker and measure generator for receiving digital images from the camera, then displaying or measuring distances between the projection reticle and the reference reticle on the monitoring screen, and relating the distances to the actual position of the autocollimator relative to the reference tooling ball. The images and measurements are used to set the position of the machine tool and to measure the size and shape of the machine tool tip, and examine cutting edge wear. patent

Hanlon, John A. (Los Alamos, NM); Gill, Timothy J. (Stanley, NM)

2001-01-01T23:59:59.000Z

254

Pumping System Assessment Tool  

Energy.gov (U.S. Department of Energy (DOE))

The Pumping System Assessment Tool (PSAT) is a free online software tool to help industrial users assess the efficiency of pumping system operations. PSAT uses achievable pump performance data from Hydraulic Institute standards and motor performance data from the MotorMaster+ database to calculate potential energy and associated cost savings. The tool also enables users to save and retrieve log files, default values, and system curves for sharing analyses with other users.

255

BlackboardSectioningTool Course Sectioning The Sectioning Tool  

E-Print Network (OSTI)

sectioning tool: Consult the online help provided within the sectioning tool Call the OIT Help Desk at (609 by those preferences, select Enable/Configure Student Preference Tool. Need help using the BlackboardBlackboardSectioningTool Course Sectioning 1 The Sectioning Tool The Sectioning Tool is a course

Bou-Zeid, Elie

256

Physical acoustic information for magnitude estimation of rate of speech  

Science Journals Connector (OSTI)

Several studies have demonstrated that the phonetic identity of a segment can be altered by the rate of a precursive sequence. While this rate normalization effect has been shown for both consonants and vowels [J. L. Miller Phonetica 38 159–180(1981)] it has never been clear what the physical acoustic basis of the rate information is. In these experiments subjects' magnitude estimations of rate for a short passage are used to assess the physical acoustic parameters used by the listener to perceive rate of speech. From earlier experiments [F. Grosjean and N. Lass Lang. Speech20(3) 198–208(1977)] it appears likely that the source of information for rate is not based upon any higher information including words or word boundaries. In the first experiment subjects give rate estimations for a passage spoken at five rates by a female English speaker that has been low?pass filtered at 300 Hz. Estimates for these filtered stimuli in which energy for F1 and higher formants is deleted leaving only pitch and amplitude information are indistinguishable from those for intact passages. It appears then that not even phonetic perception is necessary for perception of rate in this paradigm. Data for estimates of rate for passages with only pitch or only amplitude information will also be presented. [Work supported by NINCDS.

Keith R. Kluender

1984-01-01T23:59:59.000Z

257

Acoustic condition monitoring of wind turbines: Tip faults  

Science Journals Connector (OSTI)

As a significant and growing source of the world’s energy wind turbine reliability is becoming a major concern. At least two fault detection techniques for condition monitoring of wind turbine blades have been reported in early literature i.e. acoustic emissions and optical strain sensors. These require off-site measurement. The work presented here offers an alternative non-contact fault detection method based on the noise emission from the turbine during operation. An investigation has been carried out on a micro wind turbine under laboratory conditions. 4 severity levels for a fault have been planted in the form of added weight at the tip of one blade to simulate inhomogeneous debris or ice build up. Acoustic data is obtained at a single microphone placed in front of the rotor. Two prediction methods have been developed and tested on real data: one based on a single feature - rotational frequency spectral magnitude; and another based on a fuzzy logic interference using two inputs - spectral peak and rotational peak variation with time. Results show that the single spectral peak feature can be used to determine fault severity in ranges. The implementation of the fuzzy logic using a further input feature is shown to significantly improve the detection accuracy.

Daniel J. Comboni; Bruno Fazenda

2012-01-01T23:59:59.000Z

258

Acoustic monitoring of severe weather in the Northeast Pacific Ocean.  

Science Journals Connector (OSTI)

Wind and rainfall are the principal physical processes responsible for the production of high?frequency (1–50 kHz) ambient sound in the ocean. The primary source of the sound is the resonant ringing of individual bubbles created during wave breaking and raindrop splashes. Larger bubbles (>300 ?m diameter) quickly return to the surface while smaller bubbles can be mixed downward at several meters. During severe weather a layer of smaller ambient bubble forms and effectively absorbs higher?frequency (>10 kHz) sound. These processes are revealed in a two?year record of ambient sound recorded from a subsurface mooring at 50N 145W in the NE Pacific Ocean as part of the Canadian SOLAS program. The passive acoustic signal of wind rain and ambient bubbleclouds are compared to the subsurface mooring data including data from an upward looking 200 kHz active sonar and a 300 kHz ADCP. The acoustic signatures of light moderate and heavy rainfall are superimposed on the signature of high wind demonstrating rainfall detection even in the presence of high wind. [Work supported by ONR Fisheries and Oceans Canada and the Canadian CFCAS NSERC.

2008-01-01T23:59:59.000Z

259

In-situ physical properties measurements using crosswell acoustic data  

SciTech Connect

Crosswell acoustic surveys enable the in-situ measurements of elastic moduli, Poisson's ratio, porosity, and apparent seismic Q of gas-bearing low-permeability formations represented at the Department of Energy Multi-Well Experiment (MWX) site near Rifle, Colorado. These measurements, except for Q, are compared with laboratory measurements on core taken from the same depths at which the crosswell measurements are made. Seismic Q determined in situ is compared to average values for sandstone. Porosity was determined from crosswell data using the empirical relationship between acoustic velocity, porosity, and effective pressure developed by Domenico. Domenico, S.N., ''Rock Lithology and Porosity Determination from Shear and compressional Wave Velocity,'' Geophysics, Vol. 49, No. 9, Aug. 1984, pp. 1188-1195. In-situ porosities are significantly greater than the core-derived values. Sources of the discrepancy may arise from (i) the underestimation of porosity that can result when Boyle's Law measurements are made on low-permeability core and (ii) the application of Dominico's relationship, which is developed for clean sands, to the mixed sandstone and shale lithologies represented at the MWX site. Values for Young's modulus and Poisson's ratio derived from crosswell measurements are comparable to values obtained from core. Apparent seismic Q measured in situ between wells is lower than Q measured on core and clearly shows the heterogeneity of sandstone deposited in a fluvial environment. 16 refs., 4 figs., 2 tabs.

Johnson, P.A.; Albright, J.N.

1985-01-01T23:59:59.000Z

260

Risk Management Tool Attributes:  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

- Tools & SMEs - Tools & SMEs Outline for Breakout Session TOOLS 1. Types of Tools a. Risk Management - Database & Reports, risk register, risk forms, risk tracking & monitoring, basis of estimate, action item tracking, historical record of risks & changes, configuration control, enterprise-wide, metrics, risk performance index, risk checklist, graphical display, management reporting (various levels), risk communications b. Risk Analysis i. Cost, ii. budgets, funding, cash-flow analysis, iii. Schedule iv. tailoring categories v. Integrated Cost & Schedule vi. Project phase analysis; organization ownership & joint planning c. Risk Knowledge and Lessons Learned Database i. Enterprise-wide ii. Job/owner-specific iii. Workshops - project specific, risk management,

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Velo: Knowledge and Tool  

NLE Websites -- All DOE Office Websites (Extended Search)

Velo: Knowledge and Tool Integration for Collaborative Scientific Projects Carina Lansing, Kerstin Kleese van Dam 1 Scientific Project Life Cycle 2 Conceptual Modeling Simulation...

262

Manifold tool guide  

DOE Patents (OSTI)

A tool guide is described that makes possible the insertion of cleaning and/or inspection tools into a manifold pipe that will dislocate and extract the accumulated sediment in such manifold pipes. The tool guide basically comprises a right angled tube (or other angled tube as required) which can be inserted in a large tube and locked into a radially extending cross pipe by adjustable spacer rods and a spring-loaded cone, whereby appropriate cleaning tools can be inserted into the cross pipe for cleaning, inspection, etc. 3 figs.

Djordjevic, A.

1983-12-27T23:59:59.000Z

263

Manifold tool guide  

DOE Patents (OSTI)

A tool guide that makes possible the insertion of cleaning and/or inspection tools into a manifold pipe that will dislocate and extract the accumulated sediment in such manifold pipes. The tool guide basically comprises a right angled tube (or other angled tube as required) which can be inserted in a large tube and locked into a radially extending cross pipe by adjustable spacer rods and a spring-loaded cone, whereby appropriate cleaning tools can be inserted into to cross pipe for cleaning, inspection, etc.

Djordjevic, A.

1982-07-08T23:59:59.000Z

264

Manifold tool guide  

DOE Patents (OSTI)

A tool guide that makes possible the insertion of cleaning and/or inspection tools into a manifold pipe that will dislocate and extract the accumulated sediment in such manifold pipes. The tool guide basically comprises a right angled tube (or other angled tube as required) which can be inserted in a large tube and locked into a radially extending cross pipe by adjustable spacer rods and a spring-loaded cone, whereby appropriate cleaning tools can be inserted into to cross pipe for cleaning, inspection, etc.

Djordjevic, Aleksandar (Thousand Oaks, CA)

1983-12-27T23:59:59.000Z

265

HPC_Tools.pptx  

NLE Websites -- All DOE Office Websites (Extended Search)

5, 2011 * Introduction * Debugging * Performance Optimization Outline 3 * Scope of Today's Talks - Debugging and optimization tools - Some basic strategies * Take Aways - Common...

266

E-Print Network 3.0 - acoustically coupled oscillations Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

Department of Mechanical Engineering PENNPENNSSTATETATE Acoustic Analysis of Gas Turbine Combustion... InstabilityAcoustic Analysis of Gas Turbine Combustion Instability ...

267

E-Print Network 3.0 - acoustically enhanced remediation Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

PENNPENNSSTATETATE Summary: Department of Mechanical Engineering PENNPENNSSTATETATE Acoustic Analysis of Gas Turbine Combustion... InstabilityAcoustic Analysis of Gas Turbine...

268

E-Print Network 3.0 - acoustic properties Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Department of Mechanical Engineering PENNPENNSSTATETATE Acoustic Analysis of Gas Turbine Combustion... InstabilityAcoustic Analysis of Gas Turbine Combustion Instability ...

269

E-Print Network 3.0 - acoustic wave chemical Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Lyle N.- Department of Aerospace Engineering, Pennsylvania State University Collection: Engineering 8 Acoustic Identification of Unknown Fluids Summary: Acoustic Identification...

270

Levitation as a Tool in Argonne Lab | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Levitation as a Tool in Argonne Lab Levitation as a Tool in Argonne Lab Levitation as a Tool in Argonne Lab March 19, 2013 - 4:54pm Addthis Scientists at Argonne National Laboratory have discovered a way to use sound waves to levitate individual droplets of solutions containing different pharmaceuticals. Watch all Argonne videos on their video page. Michael Hess Michael Hess Former Digital Communications Specialist, Office of Public Affairs What are the key facts? Droplets are suspended in air between two sets of speakers, which generate sound waves at frequencies slightly above the audible range -- about 22 kilohertz. Back in September, Argonne National Lab posted the YouTube video "Acoustic Levitation" featuring physicist Chris Benmore suspending droplets of liquid between two speakers. It almost immediately went viral garnering

271

History of American acoustics—Introductory comments  

Science Journals Connector (OSTI)

The history of acoustics has been illuminated by the efforts in recent years of R. Bruce Lindsay and so this Bicentennial Session is being held in his honor. In addition certain numerological factors spurred our efforts in this Bicentennial Year 1976. It was just one hundred years ago that A. G. Bell's invention—the first practical telephone—was exhibited at the 1876 Centennial Exposition in Philadelphia. A year later in 1877 the first edition of Rayleigh's Theory of Sound appeared. The conjunction of these two events eventually had a powerful influence on the development of acoustics. The invited speakers will in the papers which follow endeavor to describe all of the significant advances made by Americans to technical acoustics. Apparently it all began with Joseph Henry's efforts to solve a problem in auditorium acoustics. At the brink of World War II acoustics was invaded by a host of scientists and engineers. During the period 1941–45 and in the post war years frontiers were breached in almost every direction at such a rate that description of the advances made cannot be done here. And so most of our speakers will bring their histories up only to about the year 1940.

Richard K. Cook

1976-01-01T23:59:59.000Z

272

Category:Tools | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Tools Jump to: navigation, search This category uses the form Tool. Contents: Top - 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Subcategories This category has the following 5 subcategories, out of 5 total. C [×] Community Energy Tools‎ 123 pages E [×] EERE Analysis Tools‎ 43 pages L [×] LEDS Global Partnership Tools‎ [×] LEDSGP Development Impacts Assessment Toolkits‎ 64 pages T [×] Transportation Toolkits‎ 86 pages Pages in category "Tools" The following 200 pages are in this category, out of 1,522 total. (previous 200) (next 200)

273

CKBGroup/Shared Tools | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » CKBGroup/Shared Tools < CKBGroup Jump to: navigation, search Home | 2013 Workshop | Previous Events | CKB Snapshots | Collaborative Projects | Shared Tools The CKB Group has been developed two innovative shared tools to make climate information much easier to find. They are both designed to be incorporated into other websites, and are already in use by a number of leading climate knowledge brokers. The Knowledge Navigator The Knowledge Navigator is an online application that helps you to find and access the most relevant websites for you, based on a searchable database

274

CLEAN-Technology Roadmapping: Lessons, Experiences and Tools Webinar | Open  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » CLEAN-Technology Roadmapping: Lessons, Experiences and Tools Webinar Jump to: navigation, search Tool Summary Name: Technology Roadmapping: Lessons, Experiences and Tools Webinar Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Topics: Low emission development planning, Pathways analysis, Technology characterizations Resource Type: Video, Presentation, Webinar, Training materials References: Technology Roadmapping: Lessons, Experiences and Tools Webinar[1] Logo: Technology Roadmapping: Lessons, Experiences and Tools Webinar

275

The Greenhouse Gas Protocol Initiative: Sector Specific Tools | Open Energy  

Open Energy Info (EERE)

Gas Protocol Initiative: Sector Specific Tools Gas Protocol Initiative: Sector Specific Tools Jump to: navigation, search Tool Summary LAUNCH TOOL Name: The Greenhouse Gas Protocol Initiative: Sector Specific Tools Agency/Company /Organization: World Resources Institute, World Business Council for Sustainable Development Sector: Energy, Climate Focus Area: Industry, Greenhouse Gas Phase: Determine Baseline, Evaluate Effectiveness and Revise as Needed Resource Type: Software/modeling tools User Interface: Spreadsheet Website: www.ghgprotocol.org/calculation-tools/all-tools Cost: Free References: The Greenhouse Gas Protocol Initiative: GHG Emissions from Purchased Electricity[1] The Greenhouse Gas Protocol Initiative: GHG Emissions from Stationary Combustion[2] The Greenhouse Gas Protocol Initiative: GHG Emissions from Transport or Mobil Sources[3]

276

Acoustic measurement of the Deepwater Horizon Macondo well flow rate  

E-Print Network (OSTI)

On May 31, 2010, a direct acoustic measurement method was used to quantify fluid leakage rate from the Deepwater Horizon Macondo well prior to removal of its broken riser. This method utilized an acoustic imaging sonar and ...

Camilli, Richard

277

Laser-excited acoustic oscillations in silver and bismuth nanowires  

E-Print Network (OSTI)

Coherent acoustic oscillations in Bi and Ag nanowire samples were studied with a femtosecond pump-probe technique and detection of the scattered light. The observed optical and acoustic properties reflect the nanostructure of these materials...

Jerebtsov, Sergey N.; Kolomenskii, Alexandre A.; Liu, Haidong; Zhang, Hong; Ye, Zuxin; Luo, Zhiping; Wu, Wenhao; Paulus, Gerhard G.; Schuessler, Hans A.

2007-01-01T23:59:59.000Z

278

Spatiotemporal processing and time-reversal for underwater acoustic communications  

E-Print Network (OSTI)

High-rate underwater acoustic communication can be achieved using transmitter/receiver arrays. Underwater acoustic channels can be characterized as rapidly time-varying systems that suffer severe Inter Symbol Interferences ...

Wang, Daniel Y

2005-01-01T23:59:59.000Z

279

Criminalising hacking tools  

Science Journals Connector (OSTI)

Making the sale, possession and distribution of the tools of hacking a criminal offence has obvious attractions. But many such tools are dual use and new laws run the risk of significantly inhibiting the activities of investigators, incident responders, penetration testers and academics. Recent UK attempts at framing such a law are discussed in order to show the broader problems of policy and wording.

Peter Sommer

2006-01-01T23:59:59.000Z

280

Fan System Assessment Tool  

Energy.gov (U.S. Department of Energy (DOE))

The Fan System Assessment Tool (FSAT) is a free online software tool that helps industrial users quantify energy use and savings opportunities in industrial fan systems. Use FSAT to understand how well your fan systems are operating, determine the economic benefit of system modifications, and establish which options are most economically viable when multiple opportunities exist for system modification.

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Achieving acoustical satisfaction in a green building  

Science Journals Connector (OSTI)

The Carnegie Institution’s Global Ecology Research Center at Stanford University has garnered many accolades including the AIA’s Excellence in SustainabilityAward. This building incorporates many ‘‘green’’ and energy?saving design features mechanical systems and materials. The occupants of this facility have given it high marks in U.C. Berkeley’s Center for the Built Environment’s (CBE) survey of buildings. Staff at the Global Ecology Research Center are shown to be more satisfied with their acoustical environment than occupants of other green buildings surveyed by CBE. Measured acoustical data for speech privacy in open plan and enclosed conference rooms will be presented along with descriptions of acoustical design attributes for the building.

2006-01-01T23:59:59.000Z

282

Acoustical design issues for library facility planners  

Science Journals Connector (OSTI)

Acting under the provisions of the Library Services and Technology Act the U.S. Institute of Museum and Library Services retained Charles M. Salter Associates Inc. to provide a document explaining acoustical and audio/visual requirements for libraries to library planners architects and lay people. Acoustical design issues for libraries discussed on the website include site noise considerations noise standards for each use space room acoustics considerations sound isolation between various use spaces vibration control for mechanical equipment and audio/visual system considerations. The completed document forms a part of the Libris Design library facility planning information system which includes a website with recent information on facility planning topics and a database of recently constructed California public libraries.

2006-01-01T23:59:59.000Z

283

Developing criteria for identifying acoustical defects  

Science Journals Connector (OSTI)

In a construction defect lawsuit of a multifamily residential project the determination of whether a defect exists often hinges on the criteria applied. For many acoustical items such as plumbing and HVAC noise there are no code requirements but a number of guidelines and recommendations. For items such as noise from traffic or airborne and impact sound isolation between units minimum code requirements exist but often a more stringent standard is applied. How does an expert decide when it is appropriate to apply an acoustical standard that is beyond that required by building codes? Project drawings marketing materials homeowner regulations and other documents can provide indications of the intent and promise of the project as it relates to acoustical issues. The process is discussed with examples from recent cases.

John LoVerde; David W. Dong

2013-01-01T23:59:59.000Z

284

Active micromixer using surface acoustic wave streaming  

DOE Patents (OSTI)

An active micromixer uses a surface acoustic wave, preferably a Rayleigh wave, propagating on a piezoelectric substrate to induce acoustic streaming in a fluid in a microfluidic channel. The surface acoustic wave can be generated by applying an RF excitation signal to at least one interdigital transducer on the piezoelectric substrate. The active micromixer can rapidly mix quiescent fluids or laminar streams in low Reynolds number flows. The active micromixer has no moving parts (other than the SAW transducer) and is, therefore, more reliable, less damaging to sensitive fluids, and less susceptible to fouling and channel clogging than other types of active and passive micromixers. The active micromixer is adaptable to a wide range of geometries, can be easily fabricated, and can be integrated in a microfluidic system, reducing dead volume. Finally, the active micromixer has on-demand on/off mixing capability and can be operated at low power.

Branch; Darren W. (Albuquerque, NM), Meyer; Grant D. (Ithaca, NY), Craighead; Harold G. (Ithaca, NY)

2011-05-17T23:59:59.000Z

285

Issues, Challenges, and Opportunities for Open Source  

E-Print Network (OSTI)

;2 Background · What is Free/Open Source Software Development? · FOSSD project characteristics and practices in "freedom" or liberty) vs. open source ­ Freedom to access, browse/view, study, modify and redistribute;4 Collaborative OSS tools #12;5 SourceForge Topic Map #12;6 FOSSD Project Characteristics · Operational code early

Scacchi, Walt

286

Tidal signals in basin?scale acoustic transmissions  

Science Journals Connector (OSTI)

Travel times of acoustic signals were measured between a bottom?mounted source near Oahu and five bottom?mounted receivers located near Washington Oregon and California in 1988 and 1989. At three out of five receivers observed travel times at M2 and S2 periods agree with predictions from a barotropic tide model to within 30 deg in phase and a factor of 1.6?in. amplitude. The discrepancies at the fourth and fifth receivers can be removed to first order by including predicted effects of phase?locked baroclinic tides generated by guyots in the Moonless mountains. A simple model is used to estimate the conversion of energy from barotropic to baroclinic tides by the world’s seamounts. At M2 the conversion amounts to about 4% of the total dissipation at M2. Although this estimate is very approximate it is similar to other published values.

John L. Spiesberger; Robert H. Headrick; Paul J. Bushong

1992-01-01T23:59:59.000Z

287

Interference mechanisms of acoustic/convective disturbances in a swirl-stabilized lean-premixed combustor  

Science Journals Connector (OSTI)

Interference mechanisms of acoustic/convective disturbances were experimentally investigated in a swirl-stabilized lean-premixed gas turbine combustor operated with natural gas fuel and air at atmospheric pressure and elevated temperature. Interference between azimuthal and acoustic velocity disturbances at high-amplitude limit cycle oscillations is characterized in detail as a function of axial swirler location, oscillation frequency, and mean nozzle velocity. We show that both the frequency and the intensity of self-excited instabilities in a model gas turbine combustor are correlated with axial swirler position, which indicates that a vorticity wave generated at the swirl vanes is a primary source of convective disturbances in the absence of equivalence ratio nonuniformities. Flame transfer function measurements confirm that the linear/nonlinear heat release response is a strong function of axial swirler location, even when unforced flame structures remain unchanged. The key parameter controlling this phenomenon is the phase difference between the azimuthal and acoustic velocity perturbations at the combustor dump plane; the phase difference is affected by swirler location, frequency, mean velocity, and the speed of sound. It was found that out-of-phase interference between azimuthal and acoustic velocity disturbances at the combustor inlet yields large flame angle fluctuations in relation to swirl number fluctuations, and therefore the formation of a coherent structure is hindered due to high kinematic viscosity within the vortex formation region. In-phase interference mechanisms, on the other hand, lead to high-amplitude limit cycle oscillations. This interference mechanism is then explored in the presence of temporal equivalence ratio nonuniformities, in which two different sources of convective mechanisms should be considered simultaneously in connection with acoustic velocity perturbations and the vortex dynamics. Results reveal that equivalence ratio oscillation has a significant effect on the strength of combustion-acoustic interactions. Strong self-excited instabilities of partially premixed flames are produced by in-phase interactions between acoustic velocity and equivalence ratio oscillations, which are governed by fuel injection location, frequency, mean nozzle velocity, and fuel injector impedance. At this phase condition, unburned reactants with high equivalence ratio impinge on the flame front with high inlet velocity, potentially causing large fluctuations of heat release rate.

Kyu Tae Kim; Dom A. Santavicca

2013-01-01T23:59:59.000Z

288

Numerical Modeling of Acoustic Timescale Detonation J.D. Regele  

E-Print Network (OSTI)

Numerical Modeling of Acoustic Timescale Detonation Initiation J.D. Regele , D.R. Kassoy and O to perform one and two-dimensional simulations of acoustic timescale detonation initiation using thermal overdriven detonation wave that decays to a steady-state CJ wave. A 1-D parametric study of acoustic

Vasilyev, Oleg V.

289

Support minimized inversion of acoustic and elastic wave scattering  

SciTech Connect

This report discusses the following topics on support minimized inversion of acoustic and elastic wave scattering: Minimum support inversion; forward modelling of elastodynamic wave scattering; minimum support linearized acoustic inversion; support minimized nonlinear acoustic inversion without absolute phase; and support minimized nonlinear elastic inversion.

Safaeinili, A.

1994-04-24T23:59:59.000Z

290

The Impact of Civil Rights Legislation on Classroom Acoustics  

E-Print Network (OSTI)

.................................................................................................................... 30 v Abbreviations ADA American with Disabilities Act ADAAG Americans With Disabilities Act Accessibility Guidelines ANSI American National Standards Institute ARI Air-Conditioning and Refrigeration Institute ASA Acoustical... classroom acoustics standards for subsequent inclusion in the Americans With Disabilities Act Access Guidelines (ADAAG), and to reference classroom acoustics in the International Building Code (IBC). However, opposition from the modular classroom and HVAC...

Teel, Jeffrey

2005-12-16T23:59:59.000Z

291

MHD wave refraction and the acoustic halo effect around solar active regions - a 3D study  

E-Print Network (OSTI)

An enhancement in high-frequency acoustic power is commonly observed in the solar photosphere and chromosphere surrounding magnetic active regions. We perform 3D linear forward wave modelling with a simple wavelet pulse acoustic source to ascertain whether the formation of the acoustic halo is caused by MHD mode conversion through regions of moderate and inclined magnetic fields. This conversion type is most efficient when high frequency waves from below intersect magnetic field lines at a large angle. We find a strong relationship between halo formation and the equipartition surface at which the Alfv\\'en speed $a$ matches the sound speed $c$, lending support to the theory that photospheric and chromospheric halo enhancement is due to the creation and subsequent reflection of magnetically dominated fast waves from essentially acoustic waves as they cross $a=c$. In simulations where we have capped $a$ such that waves are not permitted to refract after reaching the $a=c$ height, halos are non-existent, which su...

Rijs, Carlos; Przybylski, Damien; Cally, Paul S

2015-01-01T23:59:59.000Z

292

Sentential, lexical, and acoustic effects on the perception of word boundaries  

Science Journals Connector (OSTI)

This study investigates the effects of sentential context lexical knowledge and acoustic cues on the segmentation of connected speech. Listeners heard near-homophonous phrases (e.g. ? pl ? mpa ? ? for “plum pie” versus “plump eye”) in isolation in a sentential context or in a lexically biasing context. The sentential context and the acoustic cues were piloted to provide strong versus mild support for one segmentation alternative (plum pie) or the other (plump eye). The lexically biasing context favored one segmentation or the other (e.g. ? sk ? mpa ? ? for “scum pie” versus *“scump eye ” and ? l ? mpa ? ? for “lump eye” versus *“lum pie ” with the asterisk denoting a lexically unacceptable parse). A forced-choice task in which listeners indicated which of two words they thought they heard (e.g. “pie” or “eye”) revealed compensatory mechanisms between the sources of information. The effect of both sentential and lexical contexts on segmentation responses was larger when the acoustic cues were mild than when they were strong. Moreover lexical effects were accompanied with a reduction in sensitivity to the acoustic cues. Sentential context only affected the listeners’ response criterion. The results highlight the graded interactive and flexible nature of multicue segmentation as well as functional differences between sentential and lexical contributions to this process.

Sven L. Mattys; James F. Melhorn

2007-01-01T23:59:59.000Z

293

Acoustic characteristics of clearly spoken English fricatives  

E-Print Network (OSTI)

Acoustic characteristics of clearly spoken English fricatives renc n Fr cept em exam s to aref fric ed b gram wn effe e co h w by effo y an and 21/1 Deliberately clarified speech has been seen to yield intelligi- 2003; Krause and Braida, 2004... situations.3962 J. Acoust. Soc. Am. 125 #2;6#1;, June 2009 0001-4966/2009/12 ution subject to ASA license or copyright; see http://acousticalsociety.org/ce, Kansas 66044 ancisco, California 94104 ed 1 September 2008#2; to be understood more easily...

Maniwa, Kazumi; Jongman, Allard

2009-06-01T23:59:59.000Z

294

Heat Source Lire,  

NLE Websites -- All DOE Office Websites (Extended Search)

Source Lire, Source Lire, (liayrICS-25 ) tooling Tulles (Ai 1,06:1) - 11 (31.118 Module Stack Thermoelectric Module:, (14) ltcal L/Mr r a it i lli tisli Block Mounting Interface MMRTG Design Housing (At 2219) Fin (At Go63) Thermal Insulation (Min-K & Microtherm) Space Radioisotope Power Systems Multi-Mission Radioisotope Thermoelectric Generator January 2008 What is a Multi-Mission Radioisotope Thermoelectric Generator? Space exploration missions require safe, reliable, long-lived power systems to provide electricity and heat to spacecraft and their science instruments. A uniquely capable source of power is the radioisotope thermoelectric generator (RTG) - essentially a nuclear battery that reliably converts heat into electricity. The Department of Energy and NASA are developing

295

Source Selection Guide  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Source Selection Source Selection Overview This chapter provides guidance to the acquisition team on conducting source selection in accordance with Part 15 of the Federal Acquisition Regulation (FAR). Background The mid 1990's was a time of significant change in many areas of procurement, particularly in the introduction of new tools and processes that help the procurement professional better meet the needs of demanding customers. The passage of the Federal Acquisition Streamlining Act in 1994 and the Federal Acquisition Reform Act in 1995 , coupled with Government-wide and Department of Energy (DOE) contract reform efforts not only changed traditional procurement processes but also changed the role of the procurement professional. No longer are procurement

296

A gestalt framework for virtual machine control of automated tools  

E-Print Network (OSTI)

Computer aided design has become affordable and ubiquitous, in part as a result of the development of open source design software and web-based 3D modeling tools. Consequently, a broad spectrum of individuals are expressing ...

Moyer, Ilan Ellison

2013-01-01T23:59:59.000Z

297

Tools used for hand deburring  

SciTech Connect

This guide is designed to help in quick identification of those tools most commonly used to deburr hand size or smaller parts. Photographs and textual descriptions are used to provide rapid yet detailed information. The data presented include the Bendix Kansas City Division coded tool number, tool description, tool crib in which the tool can be found, the maximum and minimum inventory requirements, the cost of each tool, and the number of the illustration that shows the tool.

Gillespie, L.K.

1981-03-01T23:59:59.000Z

298

Analysis of Web Based Solar Photovoltaic Mapping Tools  

Energy.gov (U.S. Department of Energy (DOE))

A PV mapping tool visually represents a specific site and calculates PV system size and projected electricity production. This report identifies the commercially available solar mapping tools and thoroughly summarizes the source data type and resolution, the visualization software program being used, user inputs, calculation methodology and algorithms, map outputs, and development costs for each map.

299

Feature - WATER Tool Released  

NLE Websites -- All DOE Office Websites (Extended Search)

Water Assessment for Transportation Energy Resources (WATER) Tool Released Water Assessment for Transportation Energy Resources (WATER) Tool Released Argonne National Laboratory recently released an open access online tool called WATER (Water Assessment for Transportation Energy Resources), which quantifies water footprint of fuel production stages from feedstock production to conversion process for biofuel with county, state, and regional level spatial resolution. WATER provides analysis on water consumption and its impact on water quality. It contains biofuel pathways for corn grain ethanol, soybean biodiesel, and cellulosic ethanol produced from corn stover and wheat straw. Perennial grass (Switchgrass and Miscanthus) and forest wood residue-based biofuel pathways are currently under development. The WATER tool enables users to conduct pathway comparison, scenario development, and regional specific feedstock analysis in supporting of biofuel industry development and planning. It is available at http://water.es.anl.gov/.

300

Python Tools at NERSC  

NLE Websites -- All DOE Office Websites (Extended Search)

Python Tools Python Tools Python Tools Description and Overview Python is an interpreted, general-purpose high-level programming language. Various of versions of Python are installed on most of the NERSC systems, usually accompanied with computational tool such as numpy and scipy. Using Python on NERSC Systems To use the python installed as module on NERSC systems, you need do module load python To run a python script on the Hopper and Edison compute nodes, you must set an environment variable: setenv CRAY_ROOTFS DSL which is set automatically when the python module is loaded. To execute a script on the Hopper or Edison compute nodes dedicated to your job, you need to use aprun: aprun -n 1 python ./hello_world.py or, if the script is executable and contains '#!/usr/bin/env python' as the

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

CNC MACHINE TOOL  

Science Journals Connector (OSTI)

machines are controlled by locally programmable, dedicated micro- or mini-computers. Computer programs resident in the memory of the computer guide the machine tool to cut or form metal to conform to the de...

2000-01-01T23:59:59.000Z

302

Tools for the Mentee  

Energy.gov (U.S. Department of Energy (DOE))

The tools within this document will help to prepare you to become an effective Mentee and provide you with information on how to benefit from your Mentee-Mentor partnership.  The most important...

303

Sandia Modeling Tool Webinar  

Energy.gov (U.S. Department of Energy (DOE))

Hosted by the Energy Department and Western Area Power Administration, this webinar will show attendees about what collaborative, stakeholder-driven modeling is and how the modeling tools and process developed by Sandia can be used in Indian Country.

304

Friction stir welding tool  

DOE Patents (OSTI)

A friction stir welding tool is described and which includes a shank portion; a shoulder portion which is releasably engageable with the shank portion; and a pin which is releasably engageable with the shoulder portion.

Tolle, Charles R. (Idaho Falls, ID); Clark, Denis E. (Idaho Falls, ID); Barnes, Timothy A. (Ammon, ID)

2008-04-15T23:59:59.000Z

305

Measurement of the acoustic characteristics of the concert hall at the Sydney Opera House  

Science Journals Connector (OSTI)

The Sydney Opera House Trust is considering making changes to its Concert Hall. Prior to any alteration the Acoustics group at the University of Sydney has sought to document the hall. The main measurements were made for 48 receiver locations and 6 source locations using omnidirectional measurement microphones B?format (Soundfield) microphones and dummy head microphones in every receiver position. The measurements included impulse responses anechoic music recordings and recordings of a calibrated sound power source. Results documented by previous practitioners and researchers are described and comparison is made with the recent results.

2003-01-01T23:59:59.000Z

306

Building Energy Software Tools Directory: Tools by Country - Sweden  

NLE Websites -- All DOE Office Websites (Extended Search)

Sweden Sweden 1 B C D E H I P S U V Tool Applications Free Recently Updated 1D-HAM heat, air, moisture transport, walls Software has been updated. BV2 annual energy use, durational diagram Software has been updated. CELLAR cellar, heat loss, design rules DAVID-32 Thermal bridges, temperatures, heat flows, computer program, freeware Free software. Software has been updated. DEROB-LTH energy performance, heating, cooling, thermal comfort, design Software has been updated. EED Earth energy, boreholes, ground heat storage, ground source heat pump system (GSHP) HEAT2 heat transfer, 2D, dynamic, simulation Software has been updated. HEAT3 heat transfer, three-dimensional heat conduction, transient heat flow, steady-state heat flow Software has been updated.

307

Thermoacoustic Stirling Engine --An acoustic amplifier  

E-Print Network (OSTI)

National Laboratory Condensed Matter and Thermal Physics Group MS K764, Los Alamos, NM 87545 backhaus) efficiencies 6" 24 " 72 " Acoustic power: 100 W 1 kW 50 kW T.A. efficiency: 23% 30% 25% All-metal bonded PZT stacks Metal joints, rather than epoxy joints, between PZT elements allow stacks to generate high power

Lee, Dongwon

308

New acoustic devices for breathing investigations  

Science Journals Connector (OSTI)

The problem of spirometry control in medicine and medical engineering still remains urgent. The necessity of getting more and more information from spirometry investigations imposes more and more stringent requirements for spirometers, volumeters and ... Keywords: acoustic waves propagation, air-gas velocity, breathing, flow rate, measurement, moving in channel media, spiroanalyser

Semyon Shkundin

2009-08-01T23:59:59.000Z

309

Acoustics of modular construction—Industry overview  

Science Journals Connector (OSTI)

This session will provide an overview of the issues and efforts impacting the commercial modular construction industry throughout North America with particular focus on acoustics in relocatable classrooms. The Modular Building Institute is the international nonprofit trade association representing manufacturers and dealers of commercial modular facilites both temporary and permanent serving educational health care retail industrial military and multi?family markets.

Thomas E. Hardiman

2007-01-01T23:59:59.000Z

310

Ocean Climate Change: Comparison of Acoustic  

E-Print Network (OSTI)

Ocean Climate Change: Comparison of Acoustic Tomography, Satellite Altimetry, and Modeling The ATOC to thermal expansion. Interpreting climate change signals from fluctuations in sea level is therefore in the advective heat flux. Changes in oceanic heat storage are a major expected element of future climate shifts

Frandsen, Jannette B.

311

Research equipment: Surface Acoustic Wave (SAW) devices  

E-Print Network (OSTI)

of the acoustic wave. More specifically, the equipment consists of: i. HP 4195A (10Hz-500MHz) ii. HP 8753ES (30kHz measurements on many SAW devices iii. Agilent E5061A (300kHz-1.5GHz) http Scientific Corp.): Atmospheric plasma etching, for surface cleaning, surface treatment and activation

Gizeli, Electra

312

Condition Monitoring and Management from Acoustic  

E-Print Network (OSTI)

is about condition monitoring of large diesel engines from acoustic emission signals. The experiments have been focused on a specific and severe fault called scuffing. The fault is generally assumed to arise of this work is the analysis of the angular position changes of the engine related events such as fuel

313

Acoustic Lexemes for Organizing Internet Audio  

E-Print Network (OSTI)

Acoustic Lexemes for Organizing Internet Audio Michael A. Casey In this article, a method is proposed for automatic fine-scale audio description that draws inspiration from ontological sound automation of audio description at the level of sound objects for indexing and retrieving sound segments

Casey, Michael

314

ElectroAcoustical HansGerd Berns  

E-Print Network (OSTI)

. DUMAND will be deployed at 4800 m depth in the Pacific Ocean approximately 25 km off the west coast at DUMAND Site : : : : : : : : : : : : : : : : : : : : 46 6.4 First Acoustical Survey Operations at DUMAND : : : : : : : : : : : : : : : 50 7.2 Transducer: ITC­3217 Modified : : : : : : : : : : : : : : : : : : : : 51 7.3 Power Amplifier

Berns, Hans-Gerd

315

Upgrading secret military facilities—What is more important, acoustic design standards or acoustical performance?  

Science Journals Connector (OSTI)

The U.S. Department of Defense has developed acoustical performance standards that are to be achieved in the design and construction of meeting and conference rooms where sensitive and secret information will be discussed. These performance standards rely on published acoustical industry design data which are readily available. The intention of these standards is to prevent sensitive and secret information from being heard understood or otherwise obtained by persons or devices that are not authorized to have access to such information. This paper presents design and field performance test results for new and renovated secret rooms that initially passed the acoustical design criteria and acoustical standard field tests but failed to provide the desired secret level acoustical performance. Further investigations and research into partition component and building composite performance indicated that floors walls ceilings doors windows and perimeter penetrations by conduit and HVAC ducting which individually met the design standards and when installed meet the design standards but as a composite did not provide the intended acoustical performance that would prevent unauthorized access to sensitive and secret information by persons or devices outside the designated perimeter. Reasons for certain performance failures are discussed and specific successful remedies are presented.

2013-01-01T23:59:59.000Z

316

History of proposed Acoustical Society standard on “Underwater Passive Acoustic Monitoring for Bioacoustic Applications”.  

Science Journals Connector (OSTI)

In 2005 an ASA working group was formed to examine whether a standard should exist for “Passive Acoustic Monitoring for Marine Mammal Mitigation for Seismic Surveys”. Public discussions at subsequent meetings quickly showed that no consensus existed for specifying hardware requirements for passive acoustic measurements but consensus did seem possible for specifying “minimum requirements for recording and reporting bioacoustic data”. The proposed standard was renamed “Underwater Passive Acoustic Monitoring for Bioacoustic Applications” with three defined goals: (1) providing a set of requirements for information to be documented while recording acoustic data at sea (metadata requirements); (2) detailing the minimum information about acoustic hardware and software to be included when reporting results in gray or peer?reviewed literature; and (3) specifying metrics to be used when summarizing the features of an acoustic signal such as signal?to?noise ratio. A set of recommended best?practice procedures and equipment capabilities would also be included as an informative annex. After languishing for several years an attempt is being made to develop the standard further. This presentation describes the ASA standard outlines the development process and sketches the current thinking on the standard with an emphasis on the metrics portion.

Aaron Thode; David K. Mellinger

2010-01-01T23:59:59.000Z

317

A method for the frequency control in time-resolved two-dimensional gigahertz surface acoustic wave imaging  

SciTech Connect

We describe an extension of the time-resolved two-dimensional gigahertz surface acoustic wave imaging based on the optical pump-probe technique with periodic light source at a fixed repetition frequency. Usually such imaging measurement may generate and detect acoustic waves with their frequencies only at or near the integer multiples of the repetition frequency. Here we propose a method which utilizes the amplitude modulation of the excitation pulse train to modify the generation frequency free from the mentioned limitation, and allows for the first time the discrimination of the resulted upper- and lower-side-band frequency components in the detection. The validity of the method is demonstrated in a simple measurement on an isotropic glass plate covered by a metal thin film to extract the dispersion curves of the surface acoustic waves.

Kaneko, Shogo; Tomoda, Motonobu; Matsuda, Osamu, E-mail: omatsuda@eng.hokudai.ac.jp [Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628 (Japan)] [Division of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628 (Japan)

2014-01-15T23:59:59.000Z

318

Contaminant Sources  

Science Journals Connector (OSTI)

Contaminant sources include almost every component in the manufacturing process: people, materials, processing equipment, and manufacturing environments. People can generate contaminating particles, gases, conden...

Alvin Lieberman

1992-01-01T23:59:59.000Z

319

Ion source  

DOE Patents (OSTI)

A magnetic filter for an ion source reduces the production of undesired ion species and improves the ion beam quality. High-energy ionizing electrons are confined by the magnetic filter to an ion source region, where the high-energy electrons ionize gas molecules. One embodiment of the magnetic filter uses permanent magnets oriented to establish a magnetic field transverse to the direction of travel of ions from the ion source region to the ion extraction region. In another embodiment, low energy 16 eV electrons are injected into the ion source to dissociate gas molecules and undesired ion species into desired ion species.

Leung, Ka-Ngo (Hercules, CA); Ehlers, Kenneth W. (Alamo, CA)

1984-01-01T23:59:59.000Z

320

Cross-Dipole Acoustic Log | Open Energy Information  

Open Energy Info (EERE)

Cross-Dipole Acoustic Log Cross-Dipole Acoustic Log Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Cross-Dipole Acoustic Log Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Acoustic Logs Information Provided by Technique Lithology: Stratigraphic/Structural: Rock stress and fracture analysis Hydrological: Use for fracture identification in open and cased holes. Also used for evaluating hydro fracturing/well stimulation effectiveness. Thermal: Dictionary.png Cross-Dipole Acoustic Log: An acoustic logging technique where the acoustic transmitter and receivers are lowered down hole and waveforms that travel through the well mud,

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Greenhouse Gas Mitigation Planning Data and Tools | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Greenhouse Gas Mitigation Planning Data and Tools Greenhouse Gas Mitigation Planning Data and Tools Greenhouse Gas Mitigation Planning Data and Tools October 7, 2013 - 10:27am Addthis These data and tools from the U.S. Department of Energy (DOE) and other organizations can help Federal agencies with greenhouse gas (GHG) mitigation planning for: Buildings Vehicles and mobile equipment Business travel Employee commuting. Buildings Table 1 features data and tools to help with GHG mitigation planning for buildings. Table 1. GHG Mitigation Planning Data and Tools for Buildings Data or Tool Source Description Planning Use Buildings GHG Mitigation Worksheet Estimator Federal Energy Management Program (FEMP) Estimates savings and costs from GHG reduction strategies Evaluate GHG Reduction Strategies Estimate Costs to Implement GHG Reduction Strategies

322

E-Print Network 3.0 - assessment tool begins Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Tool of the Month: Faculty Learning Groups Assessment Expo... and Context. Assessment of Creativity will also be included. ... Source: Kostic, Milivoje M. - Department of...

323

E-Print Network 3.0 - assessment tools communicate Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Tool of the Month: Faculty Learning Groups Assessment Expo... and Context. Assessment of Creativity will also be included. ... Source: Kostic, Milivoje M. - Department of...

324

Transmission of acoustic?gravity waves through air?water interface.  

Science Journals Connector (OSTI)

It was demonstrated recently that air?water interface which is usually an almost perfect reflector of acoustic waves becomes anomalously transparent and the power flux in the wave transmitted into air increases dramatically when a compact sound source in water approaches the interface within a fraction of wavelength [O. A. Godin Phys. Rev. Lett. 97 164301 (2006)]. Powerful underwater explosions and certain natural sources such as underwater landslides generate very low?frequency waves in water and air for which both fluid buoyancy and compressibility simultaneously serve as restoring forces. In this paper analysis of sound transmission through air?water interface is extended to acoustic?gravity waves (AGWs). It is found that as for sound the interface becomes anomalously transparent for sufficiently shallow compact sources of AGWs. Depending on the source type the increase in wave power flux into air due to diffraction effects can reach several orders of magnitude. Physical mechanisms responsible for the anomalous transparency are discussed. Excitation of an interfacewave by an underwater source is shown to be an important channel of AGW transmission into atmosphere which has no counterpart in the case of sound.

Iosif M. Fuks; Oleg A. Godin

2010-01-01T23:59:59.000Z

325

Field-scale acoustic investigation of a damaged anisotropic shale during a gallery excavation  

Science Journals Connector (OSTI)

In the Opalinus Clay formation at the Mont Terri Underground Rock Laboratory, the gallery Ga08 was excavated in August 2008 to join the end-face of the pre-existing gallery Ga04. The aim of the present work was to perform in situ acoustic experiments to monitor the evolution of the Excavation Damaged Zone (EDZ) induced during the gallery construction. The end-face of Ga04 was instrumented with two arrays of acoustic transducers allowing for the active and passive seismic monitoring, i.e. acoustic survey and micro-seismicity. From the acoustic survey data, which required a high energy acoustic source to emit high frequency signals (21, 25, 31 and 38 kHz), the rock mass was observed to be anisotropic and heterogeneous at the scale of the experiment. P-wave velocities were determined to be, in average, between 3300 m/s along a structural bedding plane, and 2700 m/s at ? ? 70 ° incidence relative to that. Assuming a transversely isotropic shale formation, the P-wave velocity dependence versus ? was modeled using Thomsen's Weak Transverse Isotropy model (Thomsen, 1986) [36]. Thomsen's P-wave anisotropy parameter was found to be ? ? 0.15 , and the fifth Thomsen's parameter controlling the deviation of the wave front from an ellipsoidal geometry was found to be ? ? 0.16 . The S-wave velocity was estimated along a single direction of aligned receivers and turned out to be around 1560 m/s at ? ? 30 ° . We also show that the rock mass acts as a frequency filter for acoustic waves, related to the rock mass heterogeneities, i.e. the inter-bedding structure, which induces wave scattering and refraction. From the micro-seismicity data, we identified a large number of micro-seismic events (MSEs) detected on the acoustic arrays during and following the excavation. Most of the \\{MSEs\\} were induced on the excavated face but we also located some \\{MSEs\\} inside the rock mass itself. We show that these events are located close to a major fault, which seems to be reactivated by the excavation process.

Y. Le Gonidec; A. Schubnel; J. Wassermann; D. Gibert; C. Nussbaum; B. Kergosien; J. Sarout; A. Maineult; Y. Guéguen

2012-01-01T23:59:59.000Z

326

APS Guideline for Hand Tool and Portable Power Tool Usage  

NLE Websites -- All DOE Office Websites (Extended Search)

Hand Tool and Portable Power Tool Usage Hand Tool and Portable Power Tool Usage Introduction CAT/XSD recognizes that the misuse and improper maintenance of hand tools and portable power tools cause a significant number of injuries to even "experienced" workers. Consequently, CAT/XSD has adopted the following policies and procedures to minimize the hazards associated with the use of such equipment at the APS. These guidelines apply to all use of hand tools and portable power tools by CAT/XSD personnel while performing maintenance or installation activities at the APS. Although CAT/XSD feels that most of the guidelines also apply to tool usage during experimental activities, CAT/XSD will not require that short-term users complete the training described below. Using Tools Safely If you have not had formal training in the use of common tools, either view

327

MONITORING POWER PLANT EFFICIENCY USING THE MICROWAVE-EXCITED THERMAL-ACOUSTIC EFFECT TO MEASURE UNBURNED CARBON  

SciTech Connect

The objective of this project is to explore microwave-excited thermal-acoustic (META) phenomena for quantitative analysis of granular and powdered materials, with the culmination of the research to be an on-line carbon-in-ash monitor for coal-fired power plants. This technique of analyzing unburned carbon in fly ash could be a less tedious and time consuming method as compared to the traditional LOI manual procedure. Phase 1 of the research focused on off-line single-frequency thermal-acoustic measurements where an off-line fly ash monitor was constructed that could operate as analytical tool to explore instrument and methodology parameters for quantifying the microwave-excited thermal-acoustic effect of carbon in fly ash, and it was determined that the off-line thermal-acoustic technique could predict the carbon content of a random collection of fly ashes with a linear correlation constant of R{sup 2} = 0.778. Much higher correlations are expected for fly ashes generated from a single boiler. Phase 2 of the research developing a methodology to generate microwave spectra of various powders, including fly ash, coal, and inorganic minerals, and to determine if these microwave spectra could be used for chemical analyses. Although different minerals produced different responses, higher resolution microwave spectra would be required to be able to distinguish among minerals. Phase 3 of the research focused on the development of an on-line fly ash monitor that could be adapted to measure either a thermal-acoustic or thermal-elastic response to due microwave excitation of fly ash. The thermal-acoustic response was successfully employed for this purpose but the thermal-elastic response was too weak to yield a useful on-line device.

Robert C. Brown; Robert J. Weber; Jeffrey J. Swetelitsch

2005-01-01T23:59:59.000Z

328

Matched Asymptotic Expansion (MAE) technique applied to acoustic radiation from vibrating surfaces  

Science Journals Connector (OSTI)

The MAE technique has been used in the field of fluid mechanics for many years. Only recently has this technique been applied to acoustic problems where it has been found to be an excellent and powerful tool in analyzing either scattering and diffraction or radiation from moving rigid objects (propellers). In this paper it is shown how the MAE technique can be utilized to solve acoustic radiation problems from flexible surfaces. The technique is then applied to the following force driven systems: (1) circular piston in infinite rigid baffle (2) two concentric pistons in infinite modes. For each of problem analyzed the structural wavelength a is assumed to be small compared to the fluid wavelength (i.e. ka ? 1). The inner region close to the vibrating structure (acoustic boundary layer) is governed by the Laplace's equation while the outer solution is governed by the Helmholtz equation. The inner and outer solution is governed by the Helmholtz equation. The inner and outer solutions are solved independently and are then joined together by the MAE matching procedure. A composite solution is then obtained from a combination of the inner and the outer solution. Agreements with the exact theory for the radiated pressure surface resistance and reactance are shown to be excellent.

Mauro Pierucci

1977-01-01T23:59:59.000Z

329

Commercial thermoacoustic products and next?step developments in acoustic cooling  

Science Journals Connector (OSTI)

CFIC?Qdrive committed to development and commercialization of thermoacoustic energy conversion devices in 1999 by combining the newly developed acoustic perspective and tools developed at Los Alamos with a deep well of Stirling?cycle experience to achieve a total physics model with both inertial and viscous behavior of the working fluid. Such acoustic?Stirling devices combine the mechanical simplicity robustness and efficiency. Focusing first on refrigeration for cryogenics; this work has led to a family of standard products that have found uses worldwide from air?quality sampling and oil refinery support to military aviation oxygen liquefaction. This paper details the basic operation of these acoustic? Stirling products and the key technological elements that make them viable and attractive in cryogenics; then examines the implications for less?cold uses like food?storage and air?conditioning; with a discussion of achievable performance in accessible applications. We review the work now underway to develop devices to meet those opportunities with environmentally benign cooling of superior performance.

John Corey; Philip Spoor

2008-01-01T23:59:59.000Z

330

System for generating a beam of acoustic energy from a borehole, and applications thereof  

DOE Patents (OSTI)

In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

Vu, Cung Khac; Sinha, Dipen N.; Pantea, Cristian; Nihei, Kurt T.; Schmitt, Denis P.; Skelt, Christopher

2012-09-04T23:59:59.000Z

331

Device and method for generating a beam of acoustic energy from a borehole, and applications thereof  

DOE Patents (OSTI)

In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

Vu, Cung Khac (Houston, TX); Sinha, Dipen N. (Los Alamos, NM); Pantea, Cristian (Los Alamos, NM); Nihei, Kurt (Oakland, CA); Schmitt, Denis P. (Katy, TX); Skelt, Christopher (Houston, TX)

2010-11-23T23:59:59.000Z

332

System for generating a beam of acoustic energy from a borehole, and applications thereof  

DOE Patents (OSTI)

In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

Vu, Cung Khac (Houston, TX); Sinha, Dipen N. (Los Alamos, NM); Pantea, Cristian (Los Alamos, NM); Nihei, Kurt T. (Oakland, CA); Schmitt, Denis P. (Katy, TX); Skelt, Christopher (Houston, TX)

2012-07-31T23:59:59.000Z

333

Provide Data and Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Provide Data and Tools Print E-mail Provide Data and Tools Print E-mail With the advance of observational capabilities, computational power, and scientific research, there is both an opportunity for scientific progress in the study of the Earth system and a need to manage the data and information generated about it. As computational capabilities improve, data volume will continue to grow at an accelerating rate. It is crucial to continue to collect and store these records, but this increased output will also present data management challenges. Addressing this data-volume challenge will require advanced technology to link users to the various data providers and cloud-based tools to facilitate collaboration. In the coming decade, USGCRP will take a leadership role in coordinating these networks, by providing shared data access, analytic capabilities, and modeling frameworks to support integrated research and decision support.

334

LEDSGP/Agriculture Work Space/Tools | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » LEDSGP/Agriculture Work Space/Tools < LEDSGP Jump to: navigation, search LEDSGP Logo.png Advancing climate-resilient low emission development around the world Home About Tools Expert Assistance Events Publications Join Us About How We Work > Regional Platforms > Working Groups LEDS GP Members Steering Committee Guiding Structure Contacts How We Work > Work Streams and Working Groups > Agriculture > Tools Agriculture Tools Add an Impact Assessment Program Add an Agriculture Tool Guides Accelerating Climate Technologies: Innovative Market Strategies to Overcome Barriers to Scale-up

335

Commercial Building Energy Asset Score Tool Report | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Score Tool Score Tool Report Commercial Building Energy Asset Score Tool Report Energy Asset Score Report The Energy Asset Score report will be comprised of four sections: Current Asset Score-The source EUI is obtained by performing the whole-building energy simulation using the asset scoring tool; the modeled source EUI is adjusted to account for local climate; the adjusted EUI is compared to a fixed scale to obtain an asset score of 1 to 100. An asset score of 100 represents an ultra-efficient building; a score of 1 represents a very inefficient building in the current commercial building stock. After a building upgrade package is identified, the energy asset scoring tool will calculate the potential energy use after upgrades using standard operating conditions (by use types).

336

LEDSGP/Transportation Toolkit/Tools | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » LEDSGP/Transportation Toolkit/Tools < LEDSGP‎ | Transportation Toolkit(Redirected from Transportation Toolkit/Tools) Jump to: navigation, search LEDSGP Logo.png Transportation Toolkit Home Tools Training Contacts Tools for Low Emission Development Strategies in Transportation Use one of the search methods below to find tools for building sustainable, low emission development strategies (LEDS) for your country's transportation system. These resources focus on strategies to limit air pollutants and greenhouse gas emissions. Learn more in the report on LEDS for transportation. If you are aware of a relevant technical resource not

337

Building Energy Software Tools Directory: CONTAM  

NLE Websites -- All DOE Office Websites (Extended Search)

CONTAM CONTAM CONTAM logo. Multi-zone (nodal) airflow and contaminant transport analysis program. CONTAM consists of two components � a graphical user interface (GUI) and a simulation engine. The GUI is centered on a SketchPad that provides for the input of building topology via a set of drawing tools geared towards producing schematic representations of building floor plans. Drawing tools are used to draw walls, ducts and simplified control networks as well as to create iconic representations of building elements including flow paths, source/sinks and occupants. These drawing tools were designed to provide a robust means to create a well-formed multi-zone description of a building to be used by the simulation engine. Once a building representations is developed it is �passed� to the simulation engine to calculate zone

338

JC3 Tools | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

JC3 Tools JC3 Tools JC3 Tools NMAP Nmap ("Network Mapper") is a free and open source (license) utility for network exploration or security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. WireShark Wireshark is a network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network. Microsoft Network Monitor Network Monitor 3.4 is a protocol analyzer. It allows you to capture network traffic, view and analyze it.Solar Winds IP Address Tracker ISC SANS The ISC was created in 2001 following the successful detection, analysis, and widespread warning of the Li0n worm. Today, the ISC provides a free

339

Hybrid Ground Source System Analysis and Tool Development  

Energy.gov (U.S. Department of Energy (DOE))

Project objectives: 1. Compile filtered hourly data for three monitored hybrid installations. 2.Validate existing HyGCHP model. 3.Refine and enhance the HyGCHP model (usability / capability). 4. Demonstrate impact of actual hybrid installations. 5. Report lessons learned and impacts of HyGSHPs to design/engineering community.

340

Competitive Sourcing  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

COMPETITIVE SOURCING COMPETITIVE SOURCING ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Report on Competitive Sourcing Results Fiscal Year 2006 May 2007 Executive Office of the President Office of Management and Budget TABLE OF CONTENTS Executive Summary ...................................................................................... 1 Introduction................................................................................................. 4 I. The big picture ......................................................................................... 4 II. How public-private competition was used in FY 2006 .................................... 6 A. Anticipated benefits from competition in FY 2006

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Drum lid removal tool  

DOE Patents (OSTI)

A tool for removing the lid of a metal drum wherein the lid is clamped over the drum rim without protruding edges, the tool having an elongated handle with a blade carried by an angularly positioned holder affixed to the midsection of the handle, the blade being of selected width to slice between lid lip and the drum rim and, when the blade is so positioned, upward motion of the blade handle will cause the blade to pry the lip from the rim and allow the lid to be removed.

Pella, Bernard M. (Martinez, GA); Smith, Philip D. (North Augusta, SC)

2010-08-24T23:59:59.000Z

342

Energy Performance Indicator Tool  

Energy.gov (U.S. Department of Energy (DOE))

The EnPI V4.0 is a regression analysis based tool developed by the U.S. Department of Energy to help plant and corporate managers establish a normalized baseline of energy consumption, track annual progress of intensity improvements, energy savings, Superior Energy Performance (SEP) EnPIs, and other EnPIs that account for variations due to weather, production, and other variables. The tool is designed to accommodate multiple users including Better Buildings, Better Plants Program and Challenge Partners, SEP participants, other manufacturing firms, and non-manufacturing facilities such as data centers.

343

Retrofit Financial Analysis Tool  

Energy.gov (U.S. Department of Energy (DOE))

The Street and Parking Facility Lighting Retrofit Financial Analysis Tool was developed by a partnership of the DOE Municipal Solid-State Street Lighting Consortium, the Clinton Climate Initiative (CCI)/C40, and the Federal Energy Management Program (FEMP), for the financial analysis of retrofitting street and parking facility lighting with more efficient alternatives. Property owners, city and other government agencies, utilities, and energy efficiency organizations can use this tool to compute annualized energy and energy-cost savings, maintenance savings, greenhouse gas reductions, net present value, and simple payback associated with potential lighting upgrades.

344

Customization for tool design  

SciTech Connect

ICEMDDN capabilities have been adapted to the specific needs of the tool designer for creation of tool and gage designs. A customized graphic system allows the designer to concentrate on the design task, not on the mechanics of the graphs system. Prerequisites of customization include management support, user acceptance, user contributions, CAD/CAM operations support and cooperation from Control Data Corporation. Benefits from customization included a measurable increase in design production, better completion schedules, high quality drawings with better accuracy, and job satisfaction from participation in system development and improvement.

Michaelson, B.

1985-10-01T23:59:59.000Z

345

Acoustic boundary layer and acoustic radiation from a ribbed flat plate  

Science Journals Connector (OSTI)

The acoustic boundary?layer theory(patterned after the viscous boundary?layer theory) is derived by noting that for low frequencies where the structural wavelength is much less than the fluid acoustic wavelength there is a region about the vibrating structure which behaves as if the fluid was incompressible. The dimension of this region depends upon the particular conditions of the problem. In a paper presented by the author [J. Acoust. Soc. Am. 62 S32(A) (1977)] the theory behind the acoustic boundary layer was developed and applied to simple unit problems. In this paper the near and the far field of a force driven plate is obtained by the use of the acoustic boundary?layer theory. Two different problems are addressed. In the first instance the structure is assumed to be homogeneous while in the second problem presented a rib is attached to the flat plate. In both instances the fully coupled fluid structure problem is solved and comparisons between the exact classical approach and the proposed theory are discussed.

Mauro Pierucci

1978-01-01T23:59:59.000Z

346

Survey of Existing Tools for Formal Verification.  

SciTech Connect

Formal methods have come into wide use because of their effectiveness in verifying %22safety and security%22 requirements of digital systems; a set of requirements for which testing is mostly ineffective. Formal methods are routinely used in the design and verification of high-consequence digital systems in industry. This report outlines our work in assessing the capabilities of commercial and open source formal tools and the ways in which they can be leveraged in digital design workflows.

Punnoose, Ratish J.; Armstrong, Robert C.; Wong, Matthew H.; Jackson, Mayo

2014-12-01T23:59:59.000Z

347

Broadband acoustic imaging of breaking waves  

Science Journals Connector (OSTI)

An acoustic array was deployed in the near?surface layer in Saanich Inlet BC to image breaking waves using only the naturally occurring acoustical radiation in the band (160 and 2000 Hz) from the breaking region. The 15?element array was configured as a horizontal cross with an 8?m aperture bottom?moored and positioned nominally 3 m beneath the surface. A novel broadband scheme combined information at six independent frequencies above about 400 Hz to yield unambiguous resolved images. A parametric image analysis shows that the images align closely with the wind and can be observed moving downwind with a speed roughly equal to the dominant phase speed of the wind waves. Absolute power levels are found to be consistent with previously published results. The data also provide inferences regarding the sound generation mechanism at ‘‘collective oscillation’’ frequencies below about 400 Hz. [Work supported by ONR.

Rex K. Andrew; David M. Farmer; R. Lynn Kirlin

1997-01-01T23:59:59.000Z

348

Powerful, efficient, robust, electro?acoustic transducers  

Science Journals Connector (OSTI)

The STAR™ resonant reciprocating transducer began as a lightweight linear alternator design for a space?power free?piston Stirling engine in the early 1990's. It has since been developed into a range of commercially available motors and alternators with rated powers from 100 to over 10 000 watts (acoustic). As motors these are acoustic pressure drivers with unlimited operating life and typical transduction efficiencies of 80?90 percent. This paper explains the electrodynamics and operation of these moving? magnet Lorentz?force devices and the unique geometric configuration that has allowed scaling over such a wide range. We discuss the design and function of the unique single?degree?of?freedom flexure suspension that enables both the compact geometry and unlimited service life without wear. Data is presented from a large sample of units placed in service during the last decade demonstrating the durability and performance of these remarkable devices.

John Corey

2008-01-01T23:59:59.000Z

349

Pulse combusted acoustic agglomeration apparatus and process  

DOE Patents (OSTI)

An improved apparatus and process for removal of particulates entrained in a gas stream are provided. The removal process employs a pulse combustor to provide an acoustic pressure wave to acoustically enhance agglomeration of particulates which may be collected and removed using a conventional separation apparatus. The apparatus may be employed as a direct fired system for improved operation of gas-operated equipment such as a gas turbine, or may, alternatively, be employed as an add-on subsystem for combustion exhaust clean-up. Additionally, added particulates may include a sorbent for effecting sorption of other contaminants such as sulfur. Various other particulates for contaminant removal may also be introduced into the system as exemplified by alkali-gettering agents.

Mansour, Momtaz N. (Columbia, MD); Chandran, Ravi (Ellicott City, MD)

1994-01-01T23:59:59.000Z

350

Pulse combusted acoustic agglomeration apparatus and process  

DOE Patents (OSTI)

An improved apparatus and process for removal of particulates entrained in a gas stream are provided. The removal process employs a pulse combustor to provide an acoustic pressure wave to acoustically enhance bimodal agglomeration of particulates which may be collected and removed using a conventional separation apparatus. A particulate having a size different from the size of the particulate in the gas stream to be cleaned is introduced into the system to effectuate the bimodal process. The apparatus may be employed as a direct fired system for improved operation of gas-operated equipment such as a gas turbine, or may, alternatively, be employed as an add-on subsystem for combustion exhaust clean-up. Additionally, the added particulate may be a sorbent for effecting sorption of other contaminants such as sulfur. Various other particulates for contaminant removal may also be introduced into the system as exemplified by alkali-gettering agents.

Mansour, Momtaz N. (Columbia, MD)

1993-01-01T23:59:59.000Z

351

Ongoing developments in classroom acoustic theory and practice in 2012, and reports on efforts to implement good classroom acoustics  

Science Journals Connector (OSTI)

We live in a time of increasingly loud competing sounds and hearing loss is the number one disability in the world. Diverse populations of school children are especially vulnerable. The result is a degradation of the child’s academic achievement. New classrooms built everyday often incorporate acoustical barriers which limit students’ achievements. Overcoming these barriers involves funding constraints construction timelines and lack of support which requires advocacy from parents school boards and design teams. This advocacy should include the ANSI Classroom Acoustics standards and an acoustical assessment of existing classrooms. Complex classroom acoustics challenges may include reduction of noise radiated by HVAC systems improved acoustic treatment of external walls to minimize exterior noise and acoustic design of walls between adjacent noisy classrooms. Next steps for schools should be to retain an architect and/or an acoustical engineer for remodels and new school construction who are well versed in acoustics for educational settings and noise control. A booklet covering these issues and designed as a practical guide for educators not versed in acoustics is in preparation by the Acoustical Society of America.

Pamela Brown; Mary Crouse

2012-01-01T23:59:59.000Z

352

Acoustic enhancement for photo detecting devices  

DOE Patents (OSTI)

Provided are improvements to photo detecting devices and methods for enhancing the sensitivity of photo detecting devices. A photo detecting device generates an electronic signal in response to a received light pulse. An electro-mechanical acoustic resonator, electrically coupled to the photo detecting device, damps the electronic signal and increases the signal noise ratio (SNR) of the electronic signal. Increased photo detector standoff distances and sensitivities will result.

Thundat, Thomas G; Senesac, Lawrence R; Van Neste, Charles W

2013-02-19T23:59:59.000Z

353

Acoustic measurement of potato cannon velocity  

E-Print Network (OSTI)

This article describes measurement of potato cannon velocity with a digitized microphone signal. A microphone is attached to the potato cannon muzzle and a potato is fired at an aluminum target about 10 m away. The potato's flight time can be determined from the acoustic waveform by subtracting the time in the barrel and time for sound to return from the target. The potato velocity is simply the flight distance divided by the flight time.

Courtney, M; Courtney, Amy; Courtney, Michael

2006-01-01T23:59:59.000Z

354

Smart tool holder  

DOE Patents (OSTI)

There is provided an apparatus for machining surfaces to accuracies within the nanometer range by use of electrical current flow through the contact of the cutting tool with the workpiece as a feedback signal to control depth of cut. 3 figs.

Day, R.D.; Foreman, L.R.; Hatch, D.J.; Meadows, M.S.

1998-09-08T23:59:59.000Z

355

Study of the Acoustic Effects of Hydrokinetic Tidal Turbines in Admiralty Inlet, Puget Sound  

SciTech Connect

Hydrokinetic turbines will be a source of noise in the marine environment - both during operation and during installation/removal. High intensity sound can cause injury or behavioral changes in marine mammals and may also affect fish and invertebrates. These noise effects are, however, highly dependent on the individual marine animals; the intensity, frequency, and duration of the sound; and context in which the sound is received. In other words, production of sound is a necessary, but not sufficient, condition for an environmental impact. At a workshop on the environmental effects of tidal energy development, experts identified sound produced by turbines as an area of potentially significant impact, but also high uncertainty. The overall objectives of this project are to improve our understanding of the potential acoustic effects of tidal turbines by: (1) Characterizing sources of existing underwater noise; (2) Assessing the effectiveness of monitoring technologies to characterize underwater noise and marine mammal responsiveness to noise; (3) Evaluating the sound profile of an operating tidal turbine; and (4) Studying the effect of turbine sound on surrogate species in a laboratory environment. This study focuses on a specific case study for tidal energy development in Admiralty Inlet, Puget Sound, Washington (USA), but the methodologies and results are applicable to other turbine technologies and geographic locations. The project succeeded in achieving the above objectives and, in doing so, substantially contributed to the body of knowledge around the acoustic effects of tidal energy development in several ways: (1) Through collection of data from Admiralty Inlet, established the sources of sound generated by strong currents (mobilizations of sediment and gravel) and determined that low-frequency sound recorded during periods of strong currents is non-propagating pseudo-sound. This helped to advance the debate within the marine and hydrokinetics acoustic community as to whether strong currents produce propagating sound. (2) Analyzed data collected from a tidal turbine operating at the European Marine Energy Center to develop a profile of turbine sound and developed a framework to evaluate the acoustic effects of deploying similar devices in other locations. This framework has been applied to Public Utility District No. 1 of Snohomish Country's demonstration project in Admiralty Inlet to inform postinstallation acoustic and marine mammal monitoring plans. (3) Demonstrated passive acoustic techniques to characterize the ambient noise environment at tidal energy sites (fixed, long-term observations recommended) and characterize the sound from anthropogenic sources (drifting, short-term observations recommended). (4) Demonstrated the utility and limitations of instrumentation, including bottom mounted instrumentation packages, infrared cameras, and vessel monitoring systems. In doing so, also demonstrated how this type of comprehensive information is needed to interpret observations from each instrument (e.g., hydrophone data can be combined with vessel tracking data to evaluate the contribution of vessel sound to ambient noise). (5) Conducted a study that suggests harbor porpoise in Admiralty Inlet may be habituated to high levels of ambient noise due to omnipresent vessel traffic. The inability to detect behavioral changes associated with a high intensity source of opportunity (passenger ferry) has informed the approach for post-installation marine mammal monitoring. (6) Conducted laboratory exposure experiments of juvenile Chinook salmon and showed that exposure to a worse than worst case acoustic dose of turbine sound does not result in changes to hearing thresholds or biologically significant tissue damage. Collectively, this means that Chinook salmon may be at a relatively low risk of injury from sound produced by tidal turbines located in or near their migration path. In achieving these accomplishments, the project has significantly advanced the District's goals of developing a demonstration-scale tidal energy proj

Brian Polagye; Jim Thomson; Chris Bassett; Jason Wood; Dom Tollit; Robert Cavagnaro; Andrea Copping

2012-03-30T23:59:59.000Z

356

A GROUND-BASED 21 cm BARYON ACOUSTIC OSCILLATION SURVEY  

SciTech Connect

Baryon acoustic oscillations (BAO) provide a robust standard ruler with which to measure the acceleration of the universe. The BAO feature has so far been detected in optical galaxy surveys. Intensity mapping of neutral hydrogen emission with a ground-based radio telescope provides another promising window for measuring BAO at redshifts of order unity for relatively low cost. While the cylindrical radio telescope (CRT) proposed for these measurements will have excellent redshift resolution, it will suffer from poor angular resolution (arcminutes at best). We investigate the effect of angular resolution on the standard ruler test with BAO, using the Dark Energy Task Force Figure of Merit (FoM) as a benchmark. We then extend the analysis to include variations in the parameters characterizing the telescope and the underlying physics. Finally, we optimize the survey parameters (holding total cost fixed) and present an example of a CRT BAO survey that is competitive with Stage III dark energy experiments. The tools developed here form the backbone of a publicly available code that can be used to obtain estimates of cost and FoM for any set of survey parameters.

Seo, Hee-Jong; Dodelson, Scott; Marriner, John; Mcginnis, Dave; Stebbins, Albert; Stoughton, Chris; Vallinotto, Alberto, E-mail: sheejong@fnal.go [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510-5011 (United States)

2010-09-20T23:59:59.000Z

357

Acoustic radiation due to surface wave breaking.  

Science Journals Connector (OSTI)

While wave breaking is continually occurring at the sea surface its transient and sporadic nature makes it difficult to measure. Experimental results are presented that show how acoustic methods can be used as a remote sensor of this fundamental process. Sea surface?generated acoustic radiation (40 to 4000 Hz) is directly related to a quantitative measure of the boundary dynamics; i.e. the Toba variable. The frequency spectrum of the radiation remains remarkably unchanged over a wide range of environmental conditions but the correlation between the sound pressure level and the Toba variable undergoes an abrupt change when spilling breakers start to occur. Results support the use of acoustics to remotely measure the rate of energy being dissipated by wave breaking and the wavelength of the dominant gravity wave component. Theoretical studies have related the field measurements to analytical and laboratory results cited in the literature indicating that remote monitoring of the rate of occurrence and size distribution of ‘‘infant’’ (freshly entrained) bubbles may be possible if splashes on the surface do not radiate significant sound. Signal processing algorithms for the remote measurements discussed above are enhanced by eigenstructure analysis of the measured cross?spectral density matrix. [Work sponsored by ONR and NUSC.

Robert M. Kennedy; Stewart A. L. Glegg

1992-01-01T23:59:59.000Z

358

Air transducers with high acoustic impedance  

Science Journals Connector (OSTI)

High?Z air transducers evolved from several industrial transducers. These predecessors include (a) acoustic emission and angle?beam NDT contact transducers; (b) flowmeter transducers for high?pressure methane hot refinery gases and corrosive flare gases; and (c) transducer arrays for monitoring hot corrosive gases flowing at Mach 0.1 in smokestacks of ?3–13 m. This peculiar ancestry accounts for their unusual high?acoustic?impedance construction. By not employing low?Z air?backed radiating membranes transducer bandwidth response time and sensitivity are sacrificed. The solid robust construction however offers some compensating features: tolerance to wide ranges in pressure and temperature including rapid rates of change (thermal shock depressurization); corrosion resistance; operable with standard lab equipment without bias voltage; mounting options where the transducer forms part of the pressure boundary or where it is outside the pressure boundary. Clamp?on air flow applications at one bar include small wind tunnels and plastic pipes. Acoustically isolated pairs measure secondary flow components (crossflow circulation) in a plane perpendicular to the pipe axis. Flow applications include gases such as air mild steam (pending) or other hot pressurized or corrosive fluids. Air?coupled measurements of transmission characteristics of wood or other low?density solids and air?ranging are readily demonstrated with the low?Z transducers.

Lawrence C. Lynnworth

1998-01-01T23:59:59.000Z

359

Acoustical renovation of portable classrooms for cochlear implanted pupils  

Science Journals Connector (OSTI)

Anticipating increased enrollment of children with cochlear implants the Riverside County Office of Education undertook the acoustical renovation of two portable classrooms in California’s Riverside County: Wildomar Elementary School in Wildomar and Katherine Finchy Elementary School in Palm Springs. The aim was to improve the acoustical environment to make the classrooms suitable for pupils with severe hearing disabilities (reduce noise and reverberation). Lacking an acoustical standard specific for cochlear implanted pupils the acoustical goals chosen were those of the ANSI acoustical standard S12.60?2002. Key changes were intended to reduce interior noise from HVAC and improve the facade insulation to reduce exterior noise intrusion. The resulting acoustical improvements are documented. Costs and lessons learned are discussed.

2004-01-01T23:59:59.000Z

360

Alternative Fuels Data Center: Tools  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Tools to someone by Tools to someone by E-mail Share Alternative Fuels Data Center: Tools on Facebook Tweet about Alternative Fuels Data Center: Tools on Twitter Bookmark Alternative Fuels Data Center: Tools on Google Bookmark Alternative Fuels Data Center: Tools on Delicious Rank Alternative Fuels Data Center: Tools on Digg Find More places to share Alternative Fuels Data Center: Tools on AddThis.com... Tools The Alternative Fuels Data Center offers a large collection of helpful tools. These calculators, interactive maps, and data searches can assist fleets, fuel providers, and other transportation decision makers in their efforts to reduce petroleum use. Calculators Vehicle Cost Calculator Compare cost of ownership and emissions for most vehicle models. Icon_mobile_version mobile

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Electret Acoustic Transducer Array For Computerized Ultrasound Risk Evaluation System  

DOE Patents (OSTI)

An electret-based acoustic transducer array is provided and may be used in a system for examining tissue. The acoustic transducer array is formed with a substrate that has a multiple distinct cells formed therein. Within each of the distinct cells is positioned an acoustic transducing element formed of an electret material. A conductive membrane is formed over the distinct cells and may be flexible.

Moore, Thomas L. (Livermore, CA); Fisher, Karl A. (Brentwood, CA)

2005-08-09T23:59:59.000Z

362

Penn State's graduate program in acoustics  

Science Journals Connector (OSTI)

The posters will present a comprehensive overview of the graduate program in acoustics at Penn State. In part the posters will contain the following: (1) descriptions of the acoustics and related courses offered; (2) examples of the facilities available and the research being conducted; (3) listings of graduate theses completed and in progress; (4) information on special extended education programs—telecommunication and summer—leading to a master's degree in acoustics.

Alan D. Stuart

1988-01-01T23:59:59.000Z

363

Passive Acoustics as a Tool in Fisheries Science JOSEPH J. LUCZKOVICH*  

E-Print Network (OSTI)

, Institute for Coastal and Marine Resources, East Carolina University, Greenville, North Carolina 27858, USA DAVID A. MANN College of Marine Science, University of South Florida, 140 Seventh Avenue South, St. Petersburg, Florida 33701, USA RODNEY A. ROUNTREE Marine Ecology and Technology Applications, Inc., 23 Joshua

Luczkovich, Joseph J.

364

Numerical tools for musical instruments acoustics: analysing nonlinear physical models using continuation  

E-Print Network (OSTI)

self-sustained oscillations. Several physical models (clarinet and saxophone) are formulated the dynamical properties of self-sustained musical instruments using tra- ditional numerical techniques

Boyer, Edmond

365

Spectral-element numerical modeling for acoustic and elastic  

E-Print Network (OSTI)

problems: many oil fields are located offshore (deep offshore, or shallower). · Anisotropic rocks dispersive surface waves. Oil industry applications Offshore In foothill regions #12;Ocean acoustics

366

COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO...  

Open Energy Info (EERE)

to permeability in the reservoir. Acoustic image logs reveal a similar natural fracture population, but generally image slightly fewer fractures, and do not reveal rock...

367

A new method to measure the acoustic surface impedance outdoors  

Science Journals Connector (OSTI)

......Comparative Study Evaluation Studies Journal Article Validation Studies | Acoustics Algorithms Automobiles Construction Materials analysis Electric Impedance Materials Testing methods Models, Theoretical Noise, Transportation Radiation Monitoring......

S. Carpinello; Ph. L'Hermite; M. Bérengier; G. Licitra

2004-11-01T23:59:59.000Z

368

Acoustic scattering by axisymmertic finite-length bodies with application to fish : measurement and modeling  

E-Print Network (OSTI)

This thesis investigates the complexities of acoustic scattering by finite bodies in general and by fish in particular through the development of an advanced acoustic scattering model and detailed laboratory acoustic ...

Reeder, D. Benjamin (Davis Benjamin), 1966-

2002-01-01T23:59:59.000Z

369

E-Print Network 3.0 - acoustic measurements Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

2008 NOAA-TM-NMFS-SWFSC-429 Summary: by the acoustics team (Table 9, Fig. 19). Acoustic detection distances were not measured for this group. P. electra... NMFS ACOUSTIC STUDIES...

370

E-Print Network 3.0 - acoustical measurements Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

2008 NOAA-TM-NMFS-SWFSC-429 Summary: by the acoustics team (Table 9, Fig. 19). Acoustic detection distances were not measured for this group. P. electra... NMFS ACOUSTIC STUDIES...

371

Acoustic energy radiated by nonlinear spherical oscillations of strongly driven bubbles  

Science Journals Connector (OSTI)

...considerations of surface stability. With the quasi-acoustic...acoustic energies of bubbles driven at 23.5kHz...universal boundary of bubble stability at the upper threshold...harmonic modes on bubble levitation, stability and SLJ. Acoust...

2010-01-01T23:59:59.000Z

372

Competitive Sourcing  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Competitive Sourcing Competitive Sourcing The Department of Energy's (DOE) Competitive Sourcing program is a management initiative aimed at improving DOE's performance and reducing the Department's operational costs. The program is governed by Office of Management and Budget (OMB) Circular A- 76, Performance of Commercial Activities, dated May 29, 2003. The commercial activities selected for review and competition include functions performed by government employees that are readily available in the private sector, and where the potential for efficiencies, regardless of the winning provider, are highly likely. The candidate functions are chosen from the Department's annual Federal Activities Inventory Reform (FAIR) Act Inventory and subjected to a feasibility review to determine if a prudent business case can be made to enter

373

Probing the Depths of CSP-M: A new fdr-compliant Validation Tool  

E-Print Network (OSTI)

Probing the Depths of CSP-M: A new fdr-compliant Validation Tool Michael Leuschel and Marc Fontaine,fontaine}@cs.uni-duesseldorf.de Abstract. We present a new animation and model checking tool for CSP. The tool covers the CSP-M language in the source code, has an LTL model checker and can be used for combined CSP B specifications. During

Southampton, University of

374

Hopper Software and Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

File Storage and I/O File Storage and I/O Software and Tools Debugging and profiling Performance and Optimization Cray XE Documentation Cluster Compatibility Mode Carver PDSF Genepool Testbeds Retired Systems Data & File Systems Network Connections Queues and Scheduling Job Logs & Analytics Training & Tutorials Software Accounts & Allocations Policies Data Analytics & Visualization Data Management Policies Science Gateways User Surveys NERSC Users Group User Announcements Help Operations for: Passwords & Off-Hours Status 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC, option 3 or 510-486-8611 Home » For Users » Computational Systems » Hopper » Software and Tools

375

Nucleic Acid Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Nucleic Acid Tools Nucleic Acid Tools RNA 3D Motif Atlas, a representative collection of RNA 3D internal and hairpin loop motifs. Petrov, A.I., Zirbel, C.L., Leontis, N.B. (2013) Automated classification of RNA 3D motifs and the RNA 3D motif atlas. RNA. Non-redundant List of RNA-containing 3D structures. Leontis, N.B., & Zirbel, C.L. (2012) In Leontis, N. B., Westhof. E. (ed.), RNA 3D structure analysis and prediction. Springer Berlin Heidelberg Vol. 27, pp. 281-298. RNA Base Triple Atlas, a collection of motifs consisting of two RNA basepairs. Abu Almakarem, A.S., Petrov, A.I., Stombaugh, J., Zirbel, C.L. and Leontis, N.B. (2012) Comprehensive survey and geometric classification of base triples in RNA structures. Nucleic Acids Res, 40, 1407-1423. R3D Align, an application for detailed nucleotide to nucleotide

376

Venn Diagram Tool Kit  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Are you a Are you a passionate learner? Continual Learning Program: Employee Development Provides tools and resources for promoting continual learning, individual development, and strategic workforce development at the Department of Energy. It includes three learning sessions described below. Do you work in a learning organization? Will you invest in your own development and are looking for a way to get started? Let us help Keep Learning Even with Tight Budgets When you attend the session, you will be able to:  Discuss the Importance of continual learning  Explain an easy way to approach self-development  Create blended learning strategies for development  Use a tool for planning your IDP Let's Work on Your IDP When you attend the session, you will be able to:

377

Pneumatic soil removal tool  

DOE Patents (OSTI)

A soil removal tool is provided for removing radioactive soil, rock and other debris from the bottom of an excavation, while permitting the operator to be located outside of a containment for that excavation. The tool includes a fixed jaw, secured to one end of an elongate pipe, which cooperates with a movable jaw pivotably mounted on the pipe. Movement of the movable jaw is controlled by a pneumatic cylinder mounted on the pipe. The actuator rod of the pneumatic cylinder is connected to a collar which is slidably mounted on the pipe and forms part of the pivotable mounting assembly for the movable jaw. Air is supplied to the pneumatic cylinder through a handle connected to the pipe, under the control of an actuator valve mounted on the handle, to provide movement of the movable jaw. 3 figs.

Neuhaus, J.E.

1992-10-13T23:59:59.000Z

378

Electronic Safety Resource Tools – Supporting Hydrogen and Fuel Cell Commercialization  

SciTech Connect

The Pacific Northwest National Laboratory (PNNL) Hydrogen Safety Program conducted a planning session in Los Angeles, CA on April 1, 2014 to consider what electronic safety tools would benefit the next phase of hydrogen and fuel cell commercialization. A diverse, 20-person team led by an experienced facilitator considered the question as it applied to the eight most relevant user groups. The results and subsequent evaluation activities revealed several possible resource tools that could greatly benefit users. The tool identified as having the greatest potential for impact is a hydrogen safety portal, which can be the central location for integrating and disseminating safety information (including most of the tools identified in this report). Such a tool can provide credible and reliable information from a trustworthy source. Other impactful tools identified include a codes and standards wizard to guide users through a series of questions relating to application and specific features of the requirements; a scenario-based virtual reality training for first responders; peer networking tools to bring users from focused groups together to discuss and collaborate on hydrogen safety issues; and a focused tool for training inspectors. Table ES.1 provides results of the planning session, including proposed new tools and changes to existing tools.

Barilo, Nick F.

2014-09-29T23:59:59.000Z

379

Fluid sampling tool  

DOE Patents (OSTI)

A fluid sampling tool is described for sampling fluid from a container. The tool has a fluid collecting portion which is drilled into the container wall, thereby affixing it to the wall. The tool may have a fluid extracting section which withdraws fluid collected by the fluid collecting section. The fluid collecting section has a fluted shank with an end configured to drill a hole into a container wall. The shank has a threaded portion for tapping the borehole. The shank is threadably engaged to a cylindrical housing having an inner axial passageway sealed at one end by a septum. A flexible member having a cylindrical portion and a bulbous portion is provided. The housing can be slid into an inner axial passageway in the cylindrical portion and sealed to the flexible member. The bulbous portion has an outer lip defining an opening. The housing is clamped into the chuck of a drill, the lip of the bulbous section is pressed against a container wall until the shank touches the wall, and the user operates the drill. Wall shavings (kerf) are confined in a chamber formed in the bulbous section as it folds when the shank advances inside the container. After sufficient advancement of the shank, an o-ring makes a seal with the container wall. 6 figs.

Garcia, A.R.; Johnston, R.G.; Martinez, R.K.

1999-05-25T23:59:59.000Z

380

4-D imaging of seepage in earthen embankments with time-lapse inversion of self-potential data constrained by acoustic emissions localization  

Science Journals Connector (OSTI)

......interest while minimizing the negative impacts of random and high-energy vibrations...mobile robot to localize in a complex environment the source of any acoustic disturbance...for moment tensor characterization of fracking events. Geophysics (2012) 77(5......

J.B. Rittgers; A. Revil; T. Planes; M.A. Mooney; A.R. Koelewijn

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

E-Print Network 3.0 - amplitude acoustic wave Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Geosciences 15 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

382

E-Print Network 3.0 - acoustic waves moving Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Engineering 14 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

383

E-Print Network 3.0 - acoustic wave gas Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Physics 19 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

384

E-Print Network 3.0 - acoustic wave induced Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Mathematics 9 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

385

E-Print Network 3.0 - acoustic waves generated Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Sciences 17 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

386

E-Print Network 3.0 - acoustic wave detector Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Physics 3 Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma Summary: 233 Ion acoustic wave generation by a standing electromagnetic...

387

E-Print Network 3.0 - acoustic wave actuated Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Plasma actuator, flow control, acoustic control, airframe noise 1. INTRODUCTION 1.1. Background... applications. Section 3 reviews some applications related to aero-acoustics,...

388

E-Print Network 3.0 - acoustic cavitation bubble Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Collection: Physics 62 Acoustic saturation in bubbly cavitating flow adjacent to an oscillating wall T. Colonius,a) Summary: Acoustic saturation in bubbly cavitating flow...

389

E-Print Network 3.0 - alternative proposal acoustic Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

'acoustique 1990 APPLICATION OF FAST HARTLEY TRANSFORM TO ACOUSTIC INTENSITY MEASUREMENT W.S. GAN Acoustical... Services (1989)Pte Ltd, 29 Telok Ayer Street, Singapore 0104....

390

E-Print Network 3.0 - acoustic resonance determination Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

Collection: Mathematics 31 Acoustic Identification of Unknown Fluids Summary: Acoustic Identification of Unknown Fluids Executive Overview: Scientists at Los Alamos National......

391

E-Print Network 3.0 - anisotropic linear acoustics Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

the Shallow Water '06 experiment are analyzed. Acoustic, environmental, and on-board ship radar... packet passed through the acoustic track. Preliminary analysis of the ......

392

Acoustical and Noise Control Criteria and Guidelines for Building Design and Operations  

E-Print Network (OSTI)

Noise, vibration and acoustical design, construction, commissioning and operation practices influence building cost, efficiency, performance and effectiveness. Parameters for structural vibration, building systems noise, acoustics and environmental...

Evans, J. B.; Himmel, C. N.

393

E-Print Network 3.0 - acoustic cardiographic assessment Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

ACOUSTICS: RESULTS OF AN EXPERIMENTAL LABORATORY INVESTIGATION Summary: wrightii. A one-dimensional acoustic resonator technique was used to assess the biomass and effective......

394

E-Print Network 3.0 - acoustic heating Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Collection: Engineering 46 Ocean Climate Change: Comparison of Acoustic Summary: Consortium Comparisons of gyre-scale acoustic and direct thermal measurements of heat...

395

E-Print Network 3.0 - acoustic testing Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

OCEAN Summary: A COMPARISON OF ACOUSTIC THERMOMETRY, XBT, TOPEX, AND HOT OBSERVATIONS OF OCEAN TEMPERATURE... @apl.washington.edu) Abstract - Acoustic thermometry offers naturally...

396

E-Print Network 3.0 - acoustical testing laboratory Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Engineering 10 A COMPARISON OF ACOUSTIC THERMOMETRY, XBT, TOPEX, AND HOT OBSERVATIONS OF OCEAN TEMPERATURE IN THE NORTHEAST PACIFIC OCEAN Summary: A COMPARISON OF ACOUSTIC...

397

E-Print Network 3.0 - acoustic wave integrated Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

93 Reflection of Nonlinear Acoustic Waves from the Mechanically Free Surface of an Unconsolidated Granular Medium Summary: 1 Reflection of Nonlinear Acoustic Waves from the...

398

E-Print Network 3.0 - acoustic wave total Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

98 Reflection of Nonlinear Acoustic Waves from the Mechanically Free Surface of an Unconsolidated Granular Medium Summary: 1 Reflection of Nonlinear Acoustic Waves from the...

399

E-Print Network 3.0 - acoustic gravity waves Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

45 Reflection of Nonlinear Acoustic Waves from the Mechanically Free Surface of an Unconsolidated Granular Medium Summary: 1 Reflection of Nonlinear Acoustic Waves from the...

400

E-Print Network 3.0 - acoustic wave sensing Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

62 Reflection of Nonlinear Acoustic Waves from the Mechanically Free Surface of an Unconsolidated Granular Medium Summary: 1 Reflection of Nonlinear Acoustic Waves from the...

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

E-Print Network 3.0 - acoustic propagation experiment Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

of perceptual measurements Statistics for acoustics experiments Acoustics of porous media . The second... of Waveguides: Wave propagation in a guide Mode matching ...

402

E-Print Network 3.0 - acoustic neurinoma presenting Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Grant Collection: Engineering 20 Wave Gliders for Acoustic Applications Asst. Prof. Brian Bingham Summary: the design of a vehicle with integrated acoustic communication and...

403

E-Print Network 3.0 - acoustics Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Collection: Geosciences 24 Wave Gliders for Acoustic Applications Asst. Prof. Brian Bingham Summary: Wave Gliders for Acoustic Applications Asst. Prof. Brian Bingham...

404

E-Print Network 3.0 - acoustic transfer functions Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Computer Technologies and Information Sciences 3 The Acoustic Oceanographic Buoy A Light Acoustic Data Acquisition System Summary: : The AOB functionality allows for the...

405

An overview of acoustic?structural interactions: Vibration and acoustic radiation  

Science Journals Connector (OSTI)

The structural vibration and the resulting acoustic radiation is a fully decoupled problem in a gas and a fully coupled problem in a fluid. The fluid?structure interaction problem encompasses a broad spectrum of areas of interest in engineering applications. This ranges from mechanically existed structures (acoustic radiation) to acoustically induced vibrations (elasticscattering) to hydrodynamically applied forces (flow noise). The coupled fluid?structure interaction for each of these problems is essentially the same; the difference lies in the manner utilized in applying the prescribed forcing function to the structure in satisfying the interfaceboundary condition and in analyzing the radiated acoustic field. The common link relating these problems is the fact that the same governing equations for the fluid and the structure are applicable in each of these areas. This commonality between the diverse fluid?structure interactions will be stressed. The different techniques being used to solve the problems for each of the three types of problems will be presented and a brief review of the state of the art will be given.

Mauro Pierucci

1981-01-01T23:59:59.000Z

406

History of structural acoustics and vibrations in the Acoustical Society of America  

Science Journals Connector (OSTI)

Structural acoustics refers to the interaction of sound and structures—the response of structures to sound the radiation of sound from vibrating structures and the effect of the acoustic medium on the structural vibrations. Interest in these subjects increased greatly during the 1930s and 40s because of practical applications in the design of microphones and loud speakers used in telephones radios and electronic phonographs. The combination of electrical and mechanical systems lead to the use of electrical engineering concepts such as impedance circuits and electrical analogies in the analysis of mechanical systems. In later years much of the work dealt with various aspects of underwater structures prompted by U.S. Navy interests. The field which began with classical analytical mechanics applications has progressed to new approaches including statistical energy analysis near?field acoustical holography fuzzy structures active control of vibrations and smart materials. In recognition of these new developments the name of the technical committee was changed in 1987 from ‘‘Shock and Vibration’’ to ‘‘Structural Acoustics and Vibration.’’

2002-01-01T23:59:59.000Z

407

Acoustics of Buildings: including Acoustics of Auditoriums and Sound-proofing of Rooms  

Science Journals Connector (OSTI)

... THE acoustics of buildings is a subject which has always possessed importance, but with the increasing size of ... is a subject which has always possessed importance, but with the increasing size of public buildings and the congestion of our urban populations, it has assumed much greater importance in ...

1924-07-19T23:59:59.000Z

408

Effects of attenuation, dispersion, and high sound?pressure levels on acoustic wave distortion in horns  

Science Journals Connector (OSTI)

High?power sound sources have received a lot of attention in the past few years due to renewed interest in industrial applications of high?intensity sounds such as the acoustic agglomeration of aerosols or combustion enhancement. Most high?power sound sources require a horn to match the source impedance to the medium where the sound is radiated. Such horns introduce distortion in the initial waveform which can be detrimental to the agglomeration or combustion enhancement process. Boundary?layer attenuation smooths the wave shape while dispersion breaks up the symmetry of the waveform. Horn?induced dispersion is usually the dominant dispersion mechanism resulting in strong peaks in the waveform. Finally due to the very high acoustic levels at the horn throat finite?amplitude effects are responsible for a significant amount of distortion at high frequencies. Simple examples of waveform distortion due to these various mechanisms are shown. The effects of sound?pressure level horn design and frequency on distortion are illustrated for an exponential horn and several initial wave shapes. Experimental results are presented that compare very well with theory.

Frederic G. Pla; Gerhard Reethof

1988-01-01T23:59:59.000Z

409

A comparison of methods for 3D target localization from seismic and acoustic signatures  

SciTech Connect

An important application of seismic and acoustic unattended ground sensors (UGS) is the estimation of the three dimensional position of an emitting target. Seismic and acoustic data derived from UGS systems provide the taw information to determine these locations, but can be processed and analyzed in a number of ways using varying amounts of auxiliary information. Processing methods to improve arrival time picking for continuous wave sources and methods for determining and defining the seismic velocity model are the primary variables affecting the localization accuracy. Results using field data collected from an underground facility have shown that using an iterative time picking technique significantly improves the accuracy of the resulting derived target location. Other processing techniques show little advantage over simple crosscorrelation along in terms of accuracy, but may improve the ease with which time picks can be made. An average velocity model found through passive listening or a velocity model determined from a calibration source near the target source both result in similar location accuracies, although the use of station correction severely increases the location error.

ELBRING,GREGORY J.; GARBIN,H. DOUGLAS; LADD,MARK D.

2000-04-03T23:59:59.000Z

410

Geometric reasoning about assembly tools  

SciTech Connect

Planning for assembly requires reasoning about various tools used by humans, robots, or other automation to manipulate, attach, and test parts and subassemblies. This paper presents a general framework to represent and reason about geometric accessibility issues for a wide variety of such assembly tools. Central to the framework is a use volume encoding a minimum space that must be free in an assembly state to apply a given tool, and placement constraints on where that volume must be placed relative to the parts on which the tool acts. Determining whether a tool can be applied in a given assembly state is then reduced to an instance of the FINDPLACE problem. In addition, the author presents more efficient methods to integrate the framework into assembly planning. For tools that are applied either before or after their target parts are mated, one method pre-processes a single tool application for all possible states of assembly of a product in polynomial time, reducing all later state-tool queries to evaluations of a simple expression. For tools applied after their target parts are mated, a complementary method guarantees polynomial-time assembly planning. The author presents a wide variety of tools that can be described adequately using the approach, and surveys tool catalogs to determine coverage of standard tools. Finally, the author describes an implementation of the approach in an assembly planning system and experiments with a library of over one hundred manual and robotic tools and several complex assemblies.

Wilson, R.H.

1997-01-01T23:59:59.000Z

411

Stopping executions, saving computers with new malware detection tool  

NLE Websites -- All DOE Office Websites (Extended Search)

Saving computers with new malware detection tool Saving computers with new malware detection tool Stopping executions, saving computers with new malware detection tool A computer tool that allows the machine to identify malicious executable files without being exposed to their harmful actions. October 21, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

412

Fast pandemic detection tool ready to fight flu  

NLE Websites -- All DOE Office Websites (Extended Search)

Fast pandemic detection tool ready to fight flu Fast pandemic detection tool ready to fight flu Fast pandemic detection tool ready to fight flu Researchers are developing new tools for rapidly characterizing biological pathogens that could give rise to potentially deadly pandemics such as Influenza A (H1N1). June 9, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

413

LEDSGP/DIA-Toolkit/Tools | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » LEDSGP/DIA-Toolkit/Tools < LEDSGP‎ | DIA-Toolkit Jump to: navigation, search LEDSGP Logo.png Development Impacts Assessment Toolkit Home Tools Request Assistance Tools for Assessing the Impacts of Low-Emission Development Use one of the search methods below to find tools for assessing the impacts of low emission development strategies (LEDS) on country development goals. These resources focus on strategies to reduce poverty, improve health and local environment quality, improve energy and water access, facilitate gender equity, and address other development priorities. If you are aware

414

Sound Science: Taking Action with Acoustics  

ScienceCinema (OSTI)

From tin whistles to sonic booms, sound waves interact with each other and with the medium through which they travel. By observing these interactions, we can identify substances that are hidden in sealed containers and obtain images of buried objects. By manipulating the ability of sound to push matter around, we can create novel structures and unique materials. Join the Lab's own sound hound, Dipen Sinha, as he describes how he uses fundamental research in acoustics for solving problems in industry, security and health.

Sinha, Dipen

2014-07-21T23:59:59.000Z

415

Montana State University Proprietary 1 Summary of Gun Shot Acoustics  

E-Print Network (OSTI)

Montana State University Proprietary 1 Summary of Gun Shot Acoustics Robert C. Maher, Montana State University 4 April 2006 Audio recordings of gun shots can provide information about the gun location interpreting such recordings arises from reverberation (overlapping acoustic signal reflections) due to the gun

Maher, Robert C.

416

Quantitative Photo-Acoustic Imaging of Small Absorbers Habib Ammari  

E-Print Network (OSTI)

Quantitative Photo-Acoustic Imaging of Small Absorbers Habib Ammari Emmanuel Bossy Vincent Jugnon Hyeonbae Kang§ December 1, 2009 Abstract In photo-acoustic imaging, energy absorption causes thermo absorber from the absorbed density. AMS subject classifications. 31B20, 35B37,35L05 Key words. photo

Kang, Hyeonbae

417

Acoustic emission monitoring of HFIR vessel during hydrostatic testing  

SciTech Connect

This report discusses the results and conclusions reached from applying acoustic emission monitoring to surveillance of the High Flux Isotope Reactor vessel during pressure testing. The objective of the monitoring was to detect crack growth and/or fluid leakage should it occur during the pressure test. The report addresses the approach, acoustic emission instrumentation, installation, calibration, and test results.

Friesel, M.A.; Dawson, J.F.

1992-08-01T23:59:59.000Z

418

Measuring the Kuroshio Current with ocean acoustic tomography Naokazu Taniguchia)  

E-Print Network (OSTI)

Measuring the Kuroshio Current with ocean acoustic tomography Naokazu Taniguchia) Graduate School 29 April 2013) Ocean current profiling using ocean acoustic tomography (OAT) was conducted proportional to temperature) and current in the ocean (Munk et al., 1995). Other than coastal sea studies (e

Frandsen, Jannette B.

419

Characterizing Ocean Turbulence from Argo, Acoustic Doppler, and Simulation Data  

E-Print Network (OSTI)

. TurbSim models statistics at the height of a turbine hub (5m) well, but do not model coherent eventsCharacterizing Ocean Turbulence from Argo, Acoustic Doppler, and Simulation Data Katherine Mc Ocean Turbulence from Argo, Acoustic Doppler, and Simulation Data written by Katherine McCaffrey has

Fox-Kemper, Baylor

420

Acoustic radiation force-based elasticity imaging methods  

Science Journals Connector (OSTI)

...Wells Acoustic radiation force-based elasticity imaging...lesions. Acoustic radiation force-based elasticity imaging...properties of soft tissue. In Handbook of elastic properties of solids...W. , Trahey, G. 1995 A fundamental limit on delay estimation using...

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

A new concept of ocean acoustic tomography Lionel CROS(1)  

E-Print Network (OSTI)

a synthetic signal in ship noise with the con- straint to have an accurate estimation of the channel: discreet acoustic tomography, estimation, detection, optimization, performance analysis. R´ESUM´E COURT: La disc`ete, estimation, d´etection, optimisation, analyse de perfor- mance. 1 INTRODUCTION Ocean acoustic

Boyer, Edmond

422

15 Acoustic Daylight Imaging in the Michael J. Buckingham  

E-Print Network (OSTI)

of radiation, including light. Acoustic techniques are thus a pre- ferred choice for probing the ocean depths. Two types of acoustic sys- tems, passive sonar and active sonar, are commonly used as detection devices in the ocean [1]. A passive sonar simply listens for the sound radiated by a target

Buckingham, Michael

423

An Advanced Channel Framework for Improved Underwater Acoustic Network Simulations  

E-Print Network (OSTI)

such as pollution, climate change and severe weather events is rapidly increasing. At the same time, as ocean underwater sensors, vehicles and devices together using acoustic communication. Network protocol development operation. However, acoustic communication performance is dynamic and dependent upon the environment

Zhou, Shengli

424

Trapping and Frequency Variability in Electron Acoustic Waves  

E-Print Network (OSTI)

Trapping and Frequency Variability in Electron Acoustic Waves C.F. Driscoll, F. Anderegg, D 92093 USA Abstract. Electron Acoustic Waves (EAWs) with a phase velocity less than twice the plasma Langmuir waves, and at large excitations resonance is observed over a broad range. Laser Induced

California at San Diego, University of

425

COMPETITIVE SOURCING  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

COMPETITIVE SOURCING COMPETITIVE SOURCING EXECUTIVE STEERING GROUP MEETING PROCEEDINGS June 17, 2002 8:30 am - 11:00 am Room 5E-069 ATTENDEES John Gordon Robert Card Bruce Carnes Kathy Peery Brendan Danaher, AFGE Tony Lane Karen Evans Bill Sylvester Claudia Cross Brian Costlow Laurie Smith Helen Sherman Frank Bessera Rosalie Jordan Dennis O'Brien Mark Hively Robin Mudd Steven Apicella AGENDA 8:30 a.m. - 8:35 a.m. Opening Remarks 8:35a.m. - 8:55 a.m. Executive Steering Group roles and responsibilities, A-76 status, and talking points Team Briefings 8:55 a.m. - 9:20 a.m. Information Technology Study 9:20 a.m. - 9:45 a.m. Financial Services Study

426

Source level model for propeller blade rate radiation for the world’s merchant fleet  

Science Journals Connector (OSTI)

A model is developed for the acoustic source strength of blade rate line energy produced by single?screw merchant vessels. These source strengths are based on observed cavitation time histories on merchant vessels and on limitations imposed by considerations of propeller design procedures and ship vibration criteria. Relationships are presented for the expected value of the blade rate source strength for ships of different lengths expressed both as a monopole source strength located at a known depth below a free surface and as a dipole source strength that describes the pressure radiated to the farfield. These relationships are based on a small sample of merchant shipcharacteristics and are exercised for the estimated population of ships at sea. This calculation yields a statistical description of the distribution of source level and frequency of propeller blade rate acoustic energy for the fleet of single?screw merchant vessels.

Leslie M. Gray; David S. Greeley

1980-01-01T23:59:59.000Z

427

Retail Sales Allocation Tool (RSAT)  

NLE Websites -- All DOE Office Websites (Extended Search)

Showerheads Residential Weatherization Performance Tested Comfort Systems Ductless Heat Pumps New Construction Residential Marketing Toolkit Retail Sales Allocation Tool...

428

Prioritization Tool Measurement Input Form  

Energy.gov (U.S. Department of Energy (DOE))

BTO encourages stakeholders to recommend updates and improvements to the Prioritization Tool by using the below Measure Input Form.

429

KLA-Tencor's Inspection Tool Reduces LED Manufacturing Costs  

Energy.gov (U.S. Department of Energy (DOE))

With the help of DOE funding, KLA-Tencor is developing an improved inspection tool for LED manufacturing that promises to significantly increase overall process yields and minimize expensive waste. The power of the inspection tool lies in optical detection techniques coupled with defect source analysis software to statistically correlate front-end geometric anomalies in the substrate to killer defects on the back end of the manufacturing line, which give rise to an undesirable or unusable end product.

430

Borehole-Wall Imaging with Acoustic and Optical Televiewers for  

Open Energy Info (EERE)

Borehole-Wall Imaging with Acoustic and Optical Televiewers for Borehole-Wall Imaging with Acoustic and Optical Televiewers for Fractured-Bedrock Aquifer Investigations Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Borehole-Wall Imaging with Acoustic and Optical Televiewers for Fractured-Bedrock Aquifer Investigations Abstract Imaging with acoustic and optical televiewers results in continuous and oriented 360 degree views of the borehole wall from which the character and orientation of lithologic and structural features can be defined for fractured-bedrock aquifer investigations. Fractures are more clearly defined under a wider range of conditions on acoustic images than on optical images including dark-colored rocks, cloudy borehole water, and coated borehole walls. However, optical images allow for the direct viewing

431

Generation of Sound Bullets with a Nonlinear Acoustic Lens  

E-Print Network (OSTI)

Acoustic lenses are employed in a variety of applications, from biomedical imaging and surgery, to defense systems, but their performance is limited by their linear operational envelope and complexity. Here we show a dramatic focusing effect and the generation of large amplitude, compact acoustic pulses (sound bullets) in solid and fluid media, enabled by a tunable, highly nonlinear acoustic lens. The lens consists of ordered arrays of granular chains. The amplitude, size and location of the sound bullets can be controlled by varying static pre-compression on the chains. We support our findings with theory, numerical simulations, and corroborate the results experimentally with photoelasticity measurements. Our nonlinear lens makes possible a qualitatively new way of generating high-energy acoustic pulses, enabling, for example, surgical control of acoustic energy.

Alessandro Spadoni; Chiara Daraio

2009-08-31T23:59:59.000Z

432

HADES - Hydrophone for Acoustic Detection at South Pole  

E-Print Network (OSTI)

The South Pole Acoustic Test Setup (SPATS) is located in the upper part of the optical neutrino observatory IceCube, currently under construction. SPATS consists of four strings at depths between 80 m and 500 m below the surface of the ice with seven stages per string. Each stage is equipped with an acoustic sensor and a transmitter. Three strings (string A-C) were deployed in the austral summer 2006/07. SPATS was extended by a fourth string (string D) with second generation sensors and transmitters in 2007/08. One second generation sensor type HADES (Hydrophone for Acoustic Detection at South Pole) consists of a ring-shaped piezo-electric element coated with polyurethane. The development of the sensor, optimization of acoustic transmission by acoustic impedance matching and first in-situ results will be discussed.

Semburg, Benjamin

2008-01-01T23:59:59.000Z

433

HADES - Hydrophone for Acoustic Detection at South Pole  

E-Print Network (OSTI)

The South Pole Acoustic Test Setup (SPATS) is located in the upper part of the optical neutrino observatory IceCube, currently under construction. SPATS consists of four strings at depths between 80 m and 500 m below the surface of the ice with seven stages per string. Each stage is equipped with an acoustic sensor and a transmitter. Three strings (string A-C) were deployed in the austral summer 2006/07. SPATS was extended by a fourth string (string D) with second generation sensors and transmitters in 2007/08. One second generation sensor type HADES (Hydrophone for Acoustic Detection at South Pole) consists of a ring-shaped piezo-electric element coated with polyurethane. The development of the sensor, optimization of acoustic transmission by acoustic impedance matching and first in-situ results will be discussed.

Benjamin Semburg; for the IceCube Collaboration

2008-11-07T23:59:59.000Z

434

Tidal signals in basin?scale acoustic transmissions  

Science Journals Connector (OSTI)

Travel times of acoustic signals were measured between a bottom?mounted source near Oahu and five bottom?mounted receivers located near Washington Oregon and California in 1988 and 1989. This paper discusses the observed tidal signals. At three out of five receivers observed travel times at M2 and S2 periods agree with predictions from a barotropic tide model to within ±30° in phase and a factor of 1.6 in amplitude. The discrepancies at the fourth and fifth receivers can largely be accounted for with a simple model for the generation of baroclinic tides by interactions between the barotropic tides and guyots in the Moonless mountains. These baroclinic tides are phase locked to the astronomical tide?generating forces. A simple model is used to estimate the conversion of energy from barotropic to baroclinic tides by the world’s seamounts. At M2 the conversion amounts to about 1×1018 erg s?1 or about 4% of the total dissipation at M2. Although this estimate is very approximate it is similar to other published values.

Robert H. Headrick; John L. Spiesberger; Paul J. Bushong

1993-01-01T23:59:59.000Z

435

Wave–wave interactions and deep ocean acoustics  

Science Journals Connector (OSTI)

Deep ocean acoustics in the absence of shipping and wildlife is driven by surface processes. Best understood is the signal generated by non-linear surface wave interactions the Longuet-Higgins mechanism which dominates from 0.1 to 10?Hz and may be significant for another octave. For this source the spectral matrix of pressure and vector velocity is derived for points near the bottom of a deep ocean resting on an elastic half-space. In the absence of a bottom the ratios of matrix elements are universal constants. Bottom effects vitiate the usual “standing wave approximation ” but a weaker form of the approximation is shown to hold and this is used for numerical calculations. In the weak standing wave approximation the ratios of matrix elements are independent of the surface wave spectrum but depend on frequency and the propagation environment. Data from the Hawaii-2 Observatory are in excellent accord with the theory for frequencies between 0.1 and 1?Hz less so at higher frequencies. Insensitivity of the spectral ratios to wind and presumably waves is indeed observed in the data.

Z. Guralnik; J. Bourdelais; X. Zabalgogeazcoa; W. E. Farrell

2013-01-01T23:59:59.000Z

436

Patch nearfield acoustic holography in a moving medium  

Science Journals Connector (OSTI)

Abstract To realize the accurate reconstruction of sound field in a moving medium under the condition of limited holographic aperture, a patch nearfield acoustic holography (NAH) in a moving medium is proposed. The proposed method not only reduces the influence caused by the limited aperture effects through sound field extrapolation, but also perfectly suits for sound field reconstruction in a moving medium by improving the shape of the modified Tikhonov regularization filter and the noise estimation method in accordance with flow effects. In the method, two cases that the flow direction is parallel to and perpendicular to the hologram surface are considered. Especially in the perpendicular case, the expression of the wavenumber component in the z direction is improved to make the proposed method suitable for the moving medium at a high Mach number. Simulations are investigated to examine the performance of the proposed method and show its advantages by comparing with NAH in a moving medium and the conventional patch NAH. It is found that, the proposed method is effective and robust at different flow velocities of the medium and different frequencies of the sound source.

Bi-Chun Dong; Chuan-Xing Bi; Xiao-Zheng Zhang; Yong-Bin Zhang

2014-01-01T23:59:59.000Z

437

NISTIR 7100 PDA Forensic Tools  

E-Print Network (OSTI)

NISTIR 7100 PDA Forensic Tools: AnOverviewandAnalysis RickAyers WayneJansen #12;ii NISTIR 7100 C O M P U T E R S E C U R I T Y PDA Forensic Tools: An Overview and Analysis Rick Ayers Wayne Jansen incident, forensic examiners require tools that allow the proper retrieval and speedy examination

438

Butt Joint Tool Commissioning  

SciTech Connect

ITER Central Solenoid uses butt joints for connecting the pancakes in the CS module. The principles of the butt joining of the CICC were developed by the JAPT during CSMC project. The difference between the CSMC butt joint and the CS butt joint is that the CS butt joint is an in-line joint, while the CSMC is a double joint through a hairpin jumper. The CS butt joint has to carry the hoop load. The straight length of the joint is only 320 mm, and the vacuum chamber around the joint has to have a split in the clamp shell. These requirements are challenging. Fig.1 presents a CSMC joint, and Fig.2 shows a CS butt joint. The butt joint procedure was verified and demonstrated. The tool is capable of achieving all specified parameters. The vacuum in the end was a little higher than the target, which is not critical and readily correctable. We consider, tentatively that the procedure is established. Unexpectedly, we discover significant temperature nonuniformity in the joint cross section, which is not formally a violation of the specs, but is a point of concern. All testing parameters are recorded for QA purposes. We plan to modify the butt joining tool to improve its convenience of operation and provide all features necessary for production of butt joints by qualified personnel.

Martovetsky, N N

2007-12-06T23:59:59.000Z

439

FASTBUS simulation tools  

SciTech Connect

A generalized model of a FASTBUS master is presented. The model is used with simulation tools to aid in the specification, design, and production of FASTBUS slave modules. The model provides a mechanism to interact with the electrical schematics and software models to predict performance. The model is written in the IEEE std 1076-1987 hardware description language VHDL. A model of the ATC logic is also presented. VHDL was chosen to provide portability to various platforms and simulation tools. The models, in conjunction with most commercially available simulators, will perform all of the transactions specified in IEEE std 960-1989. The models may be used to study the behavior of electrical schematics and other software models and detect violations of the FASTBUS protocol. For example, a hardware design of a slave module could be studied, protocol violations detected and corrected before committing money to prototype development. The master model accepts a stream of high level commands from an ASCII file to initiate FASTBUS transactions. The high level command language is based on the FASTBUS standard routines listed in IEEE std 1177-1989. Using this standard-based command language to direct the model of the master, hardware engineers can simulate FASTBUS transactions in the language used by physicists and programmers to operate FASTBUS systems. 15 refs., 6 figs.

Dean, T.D. (Stanford Linear Accelerator Center, Menlo Park, CA (United States)); Haney, M.J. (Illinois Univ., Urbana, IL (United States))

1991-10-01T23:59:59.000Z

440

Early Detection of Steel Rebar Corrosion by Acoustic Emission Monitoring Early Detection of Steel Rebar Corrosion by Acoustic Emission  

E-Print Network (OSTI)

Early Detection of Steel Rebar Corrosion by Acoustic Emission Monitoring Early Detection of Steel Rebar Corrosion by Acoustic Emission Monitoring Alan D. Zdunek and David Prine BIRL Industrial Research, Evanston, IL 60201 Paper No. 547 presented at CORROSION95, the NACE International Annual Conference

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Acoustic signatures: From natural to systems science  

Science Journals Connector (OSTI)

The interest in acoustic signatures began with the problem of detecting cracks in railroad wheels. When a wheel is struck with a hammer it produces a sound like that of a bell. If the wheel is cracked it sounds dissonant and muffled. By comparing sounds from the two members of a wheelset a measure of the difference in their mechanical properties is obtained. A fully automatic system was developed and installed on a Southern Pacific track in the 1980’s. The story of this undertaking is an object lesson in systems science. Recently beams have been used as test objects in an attempt to resolve certain basic questions in the science of the acoustic monitoring method. These questions will be illustrated with results from a test fixture with various beams. The limitation of the vibration monitoring method is that other conditions such as uncertainties in the geometry of the test object its surface conditions and loading can also affect the vibration response and it is necessary to distinguish the effects due to harmful conditions from those due to harmless ones. The sensitivity of the method is thus determined by the need to make this distinction. [Work supported by NSF Grant No. MSS?9024224.

Robert D. Finch; Ben H. Jansen

1993-01-01T23:59:59.000Z

442

Acoustic emission before avalanches in granular media  

Science Journals Connector (OSTI)

Avalanches of granular media are mainly characterized by the observation and the measurement of the main angles of avalanche corresponding first to the movement of isolated beads and to the whole movement of a great part of the grains. These characterisations do not give any information about the rearrangements of the grains inside the layer of granular beads. As any movement of a grain produces a deformation of the structure it is quite normal to expect for a sound that will propagate inside the granular medium. We present an experimental study of the precursors of avalanches on spherical granular glass beads and silica aerogels in powder (size of grains less than 80 micrometers). Acoustic emission has been recorded with two piezoelectric transducers placed on the lower part of the material layer. Our results show clearly that before any movement on the upper part of the beads layer so for an angle less than the first angle of avalanche movements inside the material produce pulsed sounds that can be recorded. Theses vibrating events are occurring more and more when the angle is increasing until the first angle of avalanche where acoustic emission becomes intense.

Vincent Gibiat; Eric Plazza; Pierre De Guibert

2008-01-01T23:59:59.000Z

443

Acoustic and seismic measurement of ice processes  

Science Journals Connector (OSTI)

As sea ice responds to environmental forcing it deforms leading to the storage of strain energy. When mechanical failure occurs most of this energy is dissipated through fracturing but a small portion radiates as seismic and acoustic waves. These waves provide useful signals for sensing the failure process in the ice. In a recent ice mechanics experiment conducted north of Prudhoe Bay (SIMI ’94) a large number of ice failure events were observed using geophone and hydrophone arrays. Preliminary results are presented including a large?scale tensile fracture test and naturally occurring sounds near a closing lead. For the artificial fracture the acoustic signals allow determination of cracking rate fracture advance and crack propagation velocities. The overall crack propagation speed is estimated to be of order 50 m?s?1; maximum cracking activities occur prior to peak loading. In the second data set the naturally occurring stick?slip process was observed as two ice sheets moved against each other in a closing lead. A wide range of frequencies can occur simultaneously representing different components of the sliding and slipping mechanisms.

David M. Farmer; Yunbo Xie

1995-01-01T23:59:59.000Z

444

Geographically distributed acoustical monitoring of migrating birds  

Science Journals Connector (OSTI)

A geographically distributed system of largely automated acoustical monitoring stations was developed to monitor the migration of small passerine birds. The targeted species wood warblers and sparrows migrate at night and produce short (about 120 ms at the longest) high?pitched (between roughly 6 and 10 kHz) calls as they fly often audible from the ground. The monitoring system consisted of ten stations located in New Jersey Maryland Pennsylvania and New York and a central data repository located at the Cornell Lab of Ornithology. Each station comprised an outdoor weatherproof microphone connected to a volunteer’s home computer. The computer automatically ran acoustic transient detection software each night that listened continuously to the microphone signal and extracted all transients matching certain criteria each to its own audio file. The detected transients were uploaded by the volunteer each morning via the Internet to the central repository for classification and archival. Results including spectrograms of all detected transients and bird call counts were displayed on a public web site updated daily. [Work supported by EPA.

2000-01-01T23:59:59.000Z

445

Helioseismology in a bottle: modal acoustic velocimetry  

E-Print Network (OSTI)

Measurement of the differential rotation of the Sun's interior is one of the great achievements of helioseismology, providing important constraints for stellar physics. The technique relies on observing and analyzing rotationally-induced splittings of p-modes in the star. Here we demonstrate the first use of the technique in a laboratory setting. We apply it in a spherical cavity with a spinning central core (spherical-Couette flow) to determine the mean azimuthal velocity of the air filling the cavity. We excite a number of acoustic resonances (analogous to p-modes in the Sun) using a speaker and record the response with an array of small microphones on the outer sphere. Many observed acoustic modes show rotationally-induced splittings, which allow us to perform an inversion to determine the air's azimuthal velocity as a function of both radius and latitude. We validate the method by comparing the velocity field obtained through inversion against the velocity profile measured with a calibrated hot film anemo...

Triana, Santiago Andrés; Nataf, Henri-Claude; Thorette, Aurélien; Lekic, Vedran; Lathrop, Daniel P

2014-01-01T23:59:59.000Z

446

NREL: Wind Research - Offshore Design Tools and Methods  

NLE Websites -- All DOE Office Websites (Extended Search)

Design Tools and Methods Design Tools and Methods Graphic of a modular depiction of the FAST tool, which includes aerodynamics, hydrodynamics, control and electrical system dynamics, and structural dynamics modules. NREL's CAE Tool, FAST, and its Sub-Modules Illustration of wind turbines in various environments including land-based, shallow water (0-30m), transitional depth (30-60m), and deep water floating (greater than 60m). FAST has the capability of modeling a wide range of offshore wind system configurations including shallow water, transitional depth, and floating systems. With DOE's support, NREL has developed and maintains a robust, open-source, modular computer-aided engineering (CAE) tool, known as FAST. It has state-of-the-art capabilities for full dynamic system simulation over a

447

Building Energy Software Tools Directory: HAP  

NLE Websites -- All DOE Office Websites (Extended Search)

HAP HAP HAP logo. A versatile system design tool and an energy simulation tool in one package, Carrier�s Hourly Analysis Program (HAP) provides the ease of use of a Windows-based graphical user interface and the computing power of modern 32-bit software. HAP�s design module uses a system-based approach to HVAC load estimating. This approach tailors sizing procedures and results to the specific type of system being considered. Central AHUs, packaged rooftop units, split systems, fan coils, water source heat pumps and PTACs can easily be sized, as can CAV, VAV and multiple-zone systems. Calculation rigor and integrity are provided by the ASHRAE Transfer Function Method for calculating building heat flow. HAP�s energy analysis module performs an hour-by-hour simulation of

448

BNL | Our History: Reactors as Research Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

> See also: Accelerators > See also: Accelerators Brookhaven History: Using Reactors as Research Tools BGRR Brookhaven Graphite Research Reactor The Brookhaven Graphite Research Reactor (BGRR) was the Laboratory's first big machine and the first peace-time reactor built in the United States following World War II. The reactor's primary mission was to produce neutrons for scientific experimentation and to refine reactor technology. At the time, the BGRR could accommodate more simultaneous experiments than any other reactor. Scientists and engineers from every corner of the U.S. came to use the reactor, which was not only a source of neutrons for experiments, but also an excellent training facility. Researchers used the BGRR's neutrons as tools for studying atomic nuclei and the structure of solids, and to investigate many physical, chemical and

449

gprof Profiling Tools | Argonne Leadership Computing Facility  

NLE Websites -- All DOE Office Websites (Extended Search)

Tuning MPI on BG/Q Tuning and Analysis Utilities (TAU) HPCToolkit HPCTW mpiP gprof Profiling Tools Darshan PAPI BG/Q Performance Counters BGPM Openspeedshop Scalasca BG/Q DGEMM Performance Software & Libraries IBM References Intrepid/Challenger/Surveyor Tukey Eureka / Gadzooks Policies Documentation Feedback Please provide feedback to help guide us as we continue to build documentation for our new computing resource. [Feedback Form] gprof Profiling Tools Contents Introduction Profiling on the Blue Gene Enabling Profiling Collecting Profile Information Profiling Threaded Applications Using gprof Routine Level Flat Profile Line Level Flat Profile Call Graph Analysis Routine Execution Count List Annotated Source Listing Issues in Interpreting Profile Data Profiling Concepts Programs in Memory

450

Industrial Buildings Tools and Resources  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rolf Butters Rolf Butters Industrial Technologies Program Industrial Buildings Tools and Resources Webinar - June 11, 2009 Michael MacDonald Agenda  Introduction to Industrial Buildings Opportunity and Tools  EERE Funding, Opportunities, and Resources  Next Steps 6/11/2009 2 Facilities Energy  ITP has been working for a couple years now to develop tools to address facilities energy use, present in most plants, and about 8% of total sector energy use  First tool is a Score Card, implemented both as a stand- alone Excel file and for QuickPEP - Score Card has to be simple, so is approximate - But it can be a very important tool for scoping facilities energy use at a plant  Second tool is an adaptation of the BCHP Screening Tool, originally developed by the Distributed Energy program but

451

Ocean - Tools | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Tools Tools Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov » Communities » Ocean Decision-Support Tools (DSTs): Science and information are fundamental to effective marine planning. Marine planning involves inclusive discussion and analyses of the status and potential uses of 3-dimensional areas of coastal, marine and Great Lakes ecosystems (including the water column) and their potential changes over time. Relevant spatial data and derived interpretive and analytical products (i.e. decision-support tools) help inform all phases of the marine planning process. To date, several decision-support tools have been develop to support marine planning efforts. Marine planners should carefully evaluate which tools best apply to their region or specific issue or project. Below is a list of

452

Global Solar Opportunity Tool: A Tool for Policy Makers and Energy...  

Open Energy Info (EERE)

and Energy Analysts Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Global Solar Opportunity Tool: A Tool for Policy Makers and Energy Analysts Focus Area: Solar...

453

Tools for the Mentee  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

For Mentee For Mentee June 2012 ONE PROGRAM BRINGING TOGETHER ALL DOE COMMUNITIES OF PRACTICE O O f f f f i i c c e e o o f f L L e e a a r r n n i i n n g g & & W W o o r r k k f f o o r r c c e e D D e e v v e e l l o o p p m m e e n n t t We will mentor, develop, and foster the professional growth and advancements through individual development planning for all individuals in the Department Federal workforce to ensure our employees have fulfilling and productive careers within the Department. DOE Strategic Plan (May 2011) Tools for Mentor Page 2 May 2012 Table of Contents Being an Effective Mentee ............................................................................................................ 3 Mentee Preparation .......................................................................................................... 3

454

Tools for the Mentor  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

for Mentor for Mentor June 2012 ONE PROGRAM BRINGING TOGETHER ALL DOE COMMUNITIES OF PRACTICE O O f f f f i i c c e e o o f f L L e e a a r r n n i i n n g g & & W W o o r r k k f f o o r r c c e e D D e e v v e e l l o o p p m m e e n n t t We will mentor, develop, and foster the professional growth and advancements through individual development planning for all individuals in the Department Federal workforce to ensure our employees have fulfilling and productive careers within the Department. DOE Strategic Plan (May 2011) Tools for Mentor Page 2 June 2012 Table of Contents Being an Effective Mentor ............................................................................................................ 3 Mentor Preparation .......................................................................................................... 3

455

PPA Tools and Update  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PPA Tools & Update Chandra Shah chandra.shah@nel.gov October 21, 2010 2 | FEDERAL ENERGY MANAGEMENT PROGRAM femp.energy.gov * PPA (15 minutes) - Resources - Discussion * URESC (15 minutes) - URESC description - Issues description - Discussion Presentation/Discussion Overview 3 | FEDERAL ENERGY MANAGEMENT PROGRAM femp.energy.gov * PPA Web Site: http://www.eere.energy.gov/femp/financing/power_purchase_agreements.html - PPA Quick Guide http://www1.eere.energy.gov/femp/pdfs/ppa_guide.pdf - PPA Presentation (updated on periodic basis) - Sample Documents * Alternative Financing Options webinar recording http://apps1.eere.energy.gov/femp/training/course_detail_ondemand.cfm/CourseId=44 * FEMP Focus article (Fall 2007, p. 16-17) http://www1.eere.energy.gov/femp/news/fempfocus.html

456

Scientific Solutions (TRL 5 6 Component)- Underwater Active Acoustic Monitoring Network for Marine and Hydrokinetic Energy  

Energy.gov (U.S. Department of Energy (DOE))

Scientific Solutions (TRL 5 6 Component) - Underwater Active Acoustic Monitoring Network for Marine and Hydrokinetic Energy

457

E-Print Network 3.0 - acoustic waves propagating Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

propagating Search Powered by Explorit Topic List Advanced Search Sample search results for: acoustic waves propagating...

458

E-Print Network 3.0 - acoustic waves propagation Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

propagation Search Powered by Explorit Topic List Advanced Search Sample search results for: acoustic waves propagation...

459

Good classroom acoustics are a good investment for America  

Science Journals Connector (OSTI)

Buzz Towne’s idealism sparked ASA’s current activities to improve classroom acoustics including ANSI S12 WG43’s activity to produce an American standard for classroom acoustics. But idealism alone may not suffice to realize the reforms Buzz sought. It will help if advocates can show that good classroom acoustics are a good investment for community and nation. Absent were the resources necessary for serious economic cost?benefit studies some very informal ‘‘back?of?the?envelope’’ engineering estimates were made by acousticians audiologists and material vendors. All assume 20 year life cycles for new and renovated classrooms. In one scenario costs for quiet HVAC and sound absorbing ceilings are shown to be a small fraction of costs for ordinary school construction yielding substandard acoustics. In another scenario costs for quiet classroom HVAC are shown to be small compared to annual operating costs per student. A third scenario shows that a modest but plausible assumed increase in average lifetime earnings generously will repay the initial costs for good acoustics. These scenarios do not consider the economic costs of bad acoustics including high dropout rates truancy juvenile crime and teacher burnout. The authors hope to inspire others to more fully study the economic social and educational benefits of good acoustics.

David Lubman; Louis C. Sutherland

1999-01-01T23:59:59.000Z

460

Incorporating LCA tools in integrated simulation environments  

E-Print Network (OSTI)

and Meil, J. K. , "ATHENA™: An LCA Decision Support Tool -in the Proceedings. INCORPORATING LCA TOOLS IN INTEGRATEDof Energy. INCORPORATING LCA TOOLS IN INTEGRATED SIMULATION

Pal, Vineeta; Papamichael, Konstantinos; Bourassa, Norman; Loffeld, John J.

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Open Source Impacts of REDD Incentives Spreadsheet (OSIRIS) | Open Energy  

Open Energy Info (EERE)

Open Source Impacts of REDD Incentives Spreadsheet (OSIRIS) Open Source Impacts of REDD Incentives Spreadsheet (OSIRIS) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Open Source Impacts of REDD Incentives Spreadsheet (OSIRIS) Agency/Company /Organization: Conservation International Sector: Land Focus Area: Forestry Topics: Finance, GHG inventory Resource Type: Dataset, Software/modeling tools User Interface: Spreadsheet Website: www.conservation.org/FMG/Articles/Pages/ci_osiris_database_new_climate Cost: Free Open Source Impacts of REDD Incentives Spreadsheet (OSIRIS) Screenshot References: OSIRIS[1] OSIRIS (Open Source Impacts of REDD Incentives Spreadsheet) is a tool developed by a partnership of researchers from Conservation International (CI), the Center for Social and Economic Research on the Environment at the

462

COMPETITIVE SOURCING  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EXECUTIVE STEERING GROUP Meeting Proceedings October 30, 2002 Room 6E-069, 10:30 - 12:00 Agenda Opening Remarks Bruce Carnes Competitive Sourcing Update Denny O'Brien Team Briefings Team Leads ESG Discussion/Wrap up Bruce Carnes Attendees Bruce Carnes, Acting Chair MaryAnn Shebek Robert Card Prentis Cook Ambassador Brooks Tony Lane Kyle McSlarrow Karen Evans Suzanne Brennan, NTEU Claudia Cross Brian Costlow Helen Sherman Frank Bessera Laurie Morman Denny O'Brien Travis McCrory Bill Pearce Jeff Dowl Mark Hively Steven Apicella Robin Mudd Bruce Carnes chaired the meeting and began with welcoming NTEU to the meeting. In regard to the OMB's Balanced Scorecard, the Department has achieved a Green on progress and we are close to achieving a yellow on status.

463

3rd International symposium on fluid flow measurement effects of acoustic noise on orifice meters  

SciTech Connect

It is known that in-pipe acoustic noise can cause errors in orifice plate metering. The international metering community voted this topic as the highest priority for further research during a {open_quotes}working{close_quotes} held at N.T.I.S. in 1983. Most published work to date has been concerned with periodic, low frequency noise or pulsations, as encountered on reciprocating compressor installations where errors or their side effects may be readily noticed. Many orifice metering locations are, however, subject to high frequency noise emanating from control valves and centrifugal compressors. High frequency in-pipe noise is seldom suspected as a source of metering error and consequently it is a neglected topic. Square root error, which stems form the non-linear flow-differential pressure relationship of an orifice plate, has been well researched for low frequencies but the work has not been extended to high frequencies. To investigate this topic, high pressure studies at the British Gas Bishop Auckland Test Facility were carried out with a noise source (a pressure drop across a ball valve) and a 600 mm 0.4 {beta} orifice meter. These studies identified the effect of high frequency acoustic noise on orifice plate accuracy.

Norman, R.; Graham, P.; Drew, W.A. [Engineering Research Station, Newcastle Upon Tyne (United Kingdom)

1995-12-31T23:59:59.000Z

464

Building Energy Software Tools Directory: Indoor Humidity Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Indoor Humidity Tools Indoor Humidity Tools Indoor Humidity Tools logo. Integrated computer program intended to assist in diagnosing and solving problems of indoor air humidity and dryness. Indoor Humidity Tools is comprised of two sections: - Calculations provide humidity calculations. - Reference provides background information on humidity in convenient lookup formats, such as recommended indoor humidity levels for different types of spaces, against which calculations may be compared. Keywords indoor air humidity, dryness, condensation Validation/Testing N/A Expertise Required No special expertise required. Users first released in July 1997. Audience engineers, industrial hygienists and safety professionals, architects, building scientists, contractors, government air quality specialists, and

465

Augmentation of acoustic transmission by a transition layer  

Science Journals Connector (OSTI)

It has already been reported by the author at a previous meeting [J. Acoust. Soc. Am. Suppl. 73 S95 (1982)] that certain types of transition layers can improve the transmission of acoustic waves from one medium to another. In this paper conditions under which the transmissions of an acoustic wave is enhanced by the transition layer are presented. The case of a finite thickness elastic layer has been studied and it has been determined that at certain key frequencies an optimum transition layer thickness exists which greatly improves the interaction between the two media.

Mauro Pierucci

1985-01-01T23:59:59.000Z

466

Simultaneous acoustic and microwave backscattering from the sea surface  

Science Journals Connector (OSTI)

Simultaneous and coincident measurements of acoustic and microwavebackscatter from the air/sea interface were obtained during Phase II of the SAXON-FPN experiment in December 1992 and again in March 1993. The acoustic and microwave grazing angles were both set to 17° and the wavelengths were matched being set to 2.14 3.00 and 5.66 cm corresponding to respectively acoustic frequencies of 26.5 50 and 70 kHz and microwave frequencies of 5.3 10 and 14 GHz. Backscattering cross sections normalized by ensonified area for the acoustic (? 0 a ) and microwave (? 0 m ) returns were determined and their dependence on wind speed was investigated. The acoustic scattering strength is defined as 10? log 10 (? 0 a ) and the microwavescattering strength is defined as 10? log 10 (? 0 m )?10? log 10 (4?). The results of these experiments show that the two scattering strengths are comparable at wind speeds below about 3 m/s but that the acoustic scattering strength increases much faster than the microwavescattering strength with increasing wind speed until reaching saturation. If these wind-speed dependencies are represented by a power law U n then n is 5–6 for ? 0 a and 2–4 for ? 0 m for wind speeds between 2 and 7 m/s. This difference is ascribed to the effect of bubbles on the acoustic backscatter. The more rapid increase of ? 0 a compared to ? 0 m implies that for our 17° grazing angle acoustic scattering from the surface is negligible at all but the lowest wind speeds. Therefore a simple model is used for bubble scattering to fit the acoustic data as a function of wind speed for all three acoustic frequencies. The bubble densities required to fit the data agree well with previous measurements of near-surface bubble distributions. The model predicts an overshoot of the acoustic scattering strength (above the saturation level) at moderate wind speeds which is clearly seen in the data at 26.5 and 70 kHz. Finally a composite surface scatteringmodel is utilized for the pure surface scattering component along with the bubble model to predict the wind-speed dependence of the acoustic scattering strength at a 45° grazing angle and compare the results with earlier measurements.

Peter H. Dahl; William J. Plant; Bernd Nützel; Anke Schmidt; Heinz Herwig; Eugene A. Terray

1997-01-01T23:59:59.000Z

467

Study of maximizing acoustic energy coupling to salt  

E-Print Network (OSTI)

STUDY OF MAXIMIZING ACOUSTIC ENERGY COUPLING TO SALT A Thesis by YNG-JOV HNANG Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1979 Major... Subject: Geophysics STUDY OF &MAXIMIZING ACOUSTIC ENERGY COUPLING TO SALT A Thesis by YNG-JOU HWANG Approved as to style and content by: C arrman o ommit e em er em e er Hea o epartment December 1979 ABSTRACT Study of Haximizing Acoustic Energy...

Hwang, Yng-Jou

2012-06-07T23:59:59.000Z

468

Electromechanical transducer for acoustic telemetry system  

DOE Patents (OSTI)

An improved electromechanical transducer is provided for use in an acoustic telemetry system. The transducer of this invention comprises a stack of ferroelectric ceramic disks interleaved with a plurality of spaced electrodes which are used to electrically pole the ceramic disks. The ceramic stack is housed in a metal tubular drill collar segment. The electrodes are preferably alternatively connected to ground potential and driving potential. This alternating connection of electrodes to ground and driving potential subjects each disk to an equal electric field; and the direction of the field alternates to match the alternating direction of polarization of the ceramic disks. Preferably, a thin metal foil is sandwiched between electrodes to facilitate the electrical connection. Alternatively, a thicker metal spacer plate is selectively used in place of the metal foil in order to promote thermal cooling of the ceramic stack.

Drumheller, Douglas S. (Cedar Crest, NM)

1993-01-01T23:59:59.000Z

469

Wax Point Determinations Using Acoustic Resonance Spectroscopy  

SciTech Connect

The thermodynamic characterization of the wax point of a given crude is essential in order to maintain flow conditions that prevent plugging of undersea pipelines. This report summarizes the efforts made towards applying an Acoustic Cavity Resonance Spectrometer (ACRS) to the determination of pressures and temperatures at which wax precipitates from crude. Phillips Petroleum Company, Inc., the CRADA participant, supplied the ACRS. The instrumentation was shipped to Dr. Thomas Schmidt of ORNL, the CRADA contractor, in May 2000 after preliminary software development performed under the guidance of Dr. Samuel Colgate and Dr. Evan House of the University of Florida, Gainesville, FL. Upon receipt it became apparent that a number of modifications still needed to be made before the ACRS could be precisely and safely used for wax point measurements. This report reviews the sequence of alterations made to the ACRS, as well as defines the possible applications of the instrumentation once the modifications have been completed.

Jubin, R.T.

2002-04-08T23:59:59.000Z

470

Acoustic nonlinearity in fluorinert FC-43  

SciTech Connect

Fluorinert FC-43 nonlinearity was investigated using two approaches: (i) a finite amplitude method with harmonic production; and (ii) a nonlinear frequency mixing in the fluid with consequent beam profile measurement of the difference frequency. The finite amplitude method provides information on the coefficient of nonlinearity, {beta}, through the amplitudes of the fundamental and the second harmonic, at a certain transmitter-receiver distance. A calibrated hydrophone was used as a receiver, in order to obtain direct pressure measurements of the acoustic waves in the fluid. The role of transmitter-receiver distance in {beta} determination is investigated. In the second approach, a single transducer is used to provide two high-frequency beams. The collinear high-frequency beams mix nonlinearly in the fluid resulting in a difference frequency beam and higher order harmonics of the primaries. The difference frequency beam profite is investigated at lengths beyond the mixing distance. The experimental data are compured with the KZK theory.

Pantea, Cristian [Los Alamos National Laboratory; Sinha, Dipen N [Los Alamos National Laboratory; Osterhoudt, Curtis F [Los Alamos National Laboratory; Mombourquette, Paul C [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

471

Acoustic sand detector for fluid flowstreams  

DOE Patents (OSTI)

The particle volume and particle mass production rate of particulate solids entrained in fluid flowstreams such as formation sand or fracture proppant entrained in oil and gas production flowstreams is determined by a system having a metal probe interposed in a flow conduit for transmitting acoustic emissions created by particles impacting the probe to a sensor and signal processing circuit which produces discrete signals related to the impact of each of the particles striking the probe. The volume or mass flow rate of particulates is determined from making an initial particle size distribution and particle energy distribution and comparing the initial energy distribution and/or the initial size distribution with values related to the impact energies of a predetermined number of recorded impacts. The comparison is also used to recalibrate the system to compensate for changes in flow velocity.

Beattie, Alan G. (Corrales, NM); Bohon, W. Mark (Frisco, TX)

1993-01-01T23:59:59.000Z

472

Collisional damping of the geodesic acoustic mode  

SciTech Connect

The frequency and damping rate of the geodesic acoustic mode (GAM) is revisited by using a gyrokinetic model with a number-conserving Krook collision operator. It is found that the damping rate of the GAM is non-monotonic as the collision rate increases. At low ion collision rate, the damping rate increases linearly with the collision rate; while as the ion collision rate is higher than v{sub ti}/R, where v{sub ti} and R are the ion thermal velocity and major radius, the damping rate decays with an increasing collision rate. At the same time, as the collision rate increases, the GAM frequency decreases from the (7/4+{tau})v{sub ti}/R to (1+{tau})v{sub ti}/R, where {tau} is the ratio of electron temperature to ion temperature.

Gao Zhe [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)

2013-03-15T23:59:59.000Z

473

A perspective on the CMB acoustic peak  

E-Print Network (OSTI)

CMB angular spectrum measurements suggest a flat universe. This paper clarifies the relation between geometry and the spherical harmonic index of the first acoustic peak ($\\ell_{peak}$). Numerical and analytic calculations show that $\\ell_{peak}$ is approximately a function of $\\Omega_K/\\Omega_M$ where $\\Omega_K$ and $\\Omega_M$ are the curvature ($\\Omega_K > 0$ implies an open geometry) and mass density today in units of critical density. Assuming $\\Omega_K/\\Omega_M \\ll 1$, one obtains a simple formula for $\\ell_{peak}$, the derivation of which gives another perspective on the widely-recognized $\\Omega_M$-$\\Omega_\\Lambda$ degeneracy in flat models. This formula for near-flat cosmogonies together with current angular spectrum data yields familiar parameter constraints.

T. A. Marriage

2002-03-11T23:59:59.000Z

474

Analog circuit for controlling acoustic transducer arrays  

DOE Patents (OSTI)

A simplified ananlog circuit is presented for controlling electromechanical transducer pairs in an acoustic telemetry system. The analog circuit of this invention comprises a single electrical resistor which replaces all of the digital components in a known digital circuit. In accordance with this invention, a first transducer in a transducer pair of array is driven in series with the resistor. The voltage drop across this resistor is then amplified and used to drive the second transducer. The voltage drop across the resistor is proportional and in phase with the current to the transducer. This current is approximately 90 degrees out of phase with the driving voltage to the transducer. This phase shift replaces the digital delay required by the digital control circuit of the prior art.

Drumheller, Douglas S. (Cedar Crest, NM)

1991-01-01T23:59:59.000Z

475

Acoustic mapping of pelagic fish distribution and abundance in relation to a seismic shooting area off the Norwegian west coast  

Science Journals Connector (OSTI)

In April 1999 seismic investigations started in an area off western Norway as part of an ordinary three-dimensional survey, using a vessel with two seismic sources, each of 20 air guns and 10 hydrophone streamers. The seismic sources, towed at a depth of 8 m, were alternatively fired every 25 m along 51 transects, each 51 525 m long, separated from adjacent transects by 500 m. The possible influence of this seismic activity on pelagic fish (herring, blue whiting and mesopelagic species) was investigated in two ways. First, the distribution and abundance within the seismic area and the surrounding waters up to 30–50 km away were mapped acoustically three times. In all three surveys the acoustic abundance of pelagic fish was higher outside than inside the seismic shooting area, indicating a long-term effect of the seismic activity. Secondly, the acoustic abundance was recorded directly prior to and after shooting along some of the seismic transects. In these comparisons no differences were found, indicating that the shooting had insignificant short-term scaring effects. However, both blue whiting and mesopelagic species were found in deeper waters in periods with shooting compared to periods without shooting, indicating that vertical movement rather than horizontal movement could be a short-term reaction to this noise.

Aril Slotte; Kaare Hansen; John Dalen; Egil Ona

2004-01-01T23:59:59.000Z

476

Building Energy Software Tools Directory: EED  

NLE Websites -- All DOE Office Websites (Extended Search)

EED EED EED logo. Program for borehole heat exchanger design. Its easy of use, short learning curve, quick calculation times and inherent databases make EED a useful tool in everyday engineering work for design of ground source heat pump system (GSHP) and borehole thermal storage. In very large and complex tasks EED allows for retrieving the approximate required size and layout before initiating more detailed analyses. Even for very small plants EED values the effort to do a calculation instead of using rules of thumb is worthwhile. In ground source heat pump system, heat is extracted from the fluid in the ground connection by a geothermal heat pump and distributed to the building. The fluid is then re-warmed as it flows through the ground. In cooling mode, the process is reversed. This is a renewable, environmentally

477

Hydrogen Safety Knowledge Tools  

SciTech Connect

With hydrogen gaining acceptance as an energy carrier for fuel cell vehicles and stationary fuel cell applications, a new community of hydrogen users is emerging and continues to grow. With this growth has come the need to spread the word about safe practices for handling, storing, and using hydrogen. Like all energy forms, hydrogen can be used safely through proper procedures and engineering techniques. However, hydrogen involves a degree of risk that must be respected, and the importance of avoiding complacency or haste in the safe conduct and performance of projects involving hydrogen cannot be overstated. To encourage and promote the safe use of hydrogen, Pacific Northwest National Laboratory (PNNL) has developed and continues to enhance two software tools in support of the U.S. Department of Energy's Fuel Cell Technologies Program: the Hydrogen Safety Best Practices online manual (www.H2BestPractices.org) and the Hydrogen Incident Reporting and Lessons Learned database (www.H2Incidents.org).

Fassbender, Linda L.

2011-01-31T23:59:59.000Z

478

Slide system for machine tools  

DOE Patents (OSTI)

The present invention relates to a machine tool which permits the machining of nonaxisymmetric surfaces on a workpiece while rotating the workpiece about a central axis of rotation. The machine tool comprises a conventional two-slide system (X-Y) with one of these slides being provided with a relatively short travel high-speed auxiliary slide which carries the material-removing tool. The auxiliary slide is synchronized with the spindle speed and the position of the other two slides and provides a high-speed reciprocating motion required for the displacement of the cutting tool for generating a nonaxisymmetric surface at a selected location on the workpiece.

Douglass, S.S.; Green, W.L.

1980-06-12T23:59:59.000Z

479

Tool Wear in Friction Drilling  

SciTech Connect

This study investigated the wear of carbide tools used in friction drilling, a nontraditional hole-making process. In friction drilling, a rotating conical tool uses the heat generated by friction to soften and penetrate a thin workpiece and create a bushing without generating chips. The wear of a hard tungsten carbide tool used for friction drilling a low carbon steel workpiece has been investigated. Tool wear characteristics were studied by measuring its weight change, detecting changes in its shape with a coordinate measuring machine, and making observations of wear damage using scanning electron microscopy. Energy dispersive spectroscopy was applied to analyze the change in chemical composition of the tool surface due to drilling. In addition, the thrust force and torque during drilling and the hole size were measured periodically to monitor the effects of tool wear. Results indicate that the carbide tool is durable, showing minimal tool wear after drilling 11000 holes, but observations also indicate progressively severe abrasive grooving on the tool tip.

Miller, Scott F [ORNL; Blau, Peter Julian [ORNL; Shih, Albert J. [University of Michigan

2007-01-01T23:59:59.000Z

480

Virtual Crosswalk Analysis Tool (VCAT)  

NLE Websites -- All DOE Office Websites (Extended Search)

standard business representations show only the intended relationships and miss the rest. Social networking and data mining tools may show intended relationships and ignore the...

Note: This page contains sample records for the topic "tool acoustic source" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

tools | OpenEI Community  

Open Energy Info (EERE)

and discussion of smart grid technologies, tools, and techniques. The Smart Grid Investment Grant (SGIG) program is authorized by the Energy Independence and Security Act of...

482

Pumping System Assessment Tool Overview  

Energy.gov (U.S. Department of Energy (DOE))

This power point presentation provides an overview of AMO's pumping system assessment tool (PSAT) that is used during energy savings assessments at large industrial facilities.

483

Slide system for machine tools  

DOE Patents (OSTI)

The present invention relates to a machine tool which permits the machining of nonaxisymmetric surfaces on a workpiece while rotating the workpiece about a central axis of rotation. The machine tool comprises a conventional two-slide system (X-Y) with one of these slides being provided with a relatively short travel high-speed auxiliary slide which carries the material-removing tool. The auxiliary slide is synchronized with the spindle speed and the position of the other two slides and provides a high-speed reciprocating motion required for the displacement of the cutting tool for generating a nonaxisymmetric surface at a selected location on the workpiece.

Douglass, Spivey S. (Oak Ridge, TN); Green, Walter L. (Knoxville, TN)

1982-01-01T23:59:59.000Z

484

Radiation source  

DOE Patents (OSTI)

A device and method for relativistic electron beam heating of a high-density plasma in a small localized region. A relativistic electron beam generator or accelerator produces a high-voltage electron beam which propagates along a vacuum drift tube and is modulated to initiate electron bunching within the beam. The beam is then directed through a low-density gas chamber which provides isolation between the vacuum modulator and the relativistic electron beam target. The relativistic beam is then applied to a high-density target plasma which typically comprises DT, DD, or similar thermonuclear gas at a density of 10.sup.17 to 10.sup.20 electrons per cubic centimeter. The target gas is ionized prior to application of the relativistic electron beam by means of a laser or other preionization source to form a plasma. Utilizing a relativistic electron beam with an individual particle energy exceeding 3 MeV, classical scattering by relativistic electrons passing through isolation foils is negligible. As a result, relativistic streaming instabilities are initiated within the high-density target plasma causing the relativistic electron beam to efficiently deposit its energy into a small localized region of the high-density plasma target.

Thode, Lester E. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

485

A case study of multipole acoustic logging in heavy oil sand reservoirs  

Science Journals Connector (OSTI)

The multipole acoustic logging tool (MPAL) was tested in the heavy oil sand reservoirs of Canada. Compared with near shales the P-wave slowness of heavy oil sands does not change obviously with the value of about 125?s/ft; the dipole shear slowness decreases significantly to 275?s/ft. The heavy oil sands have a Vp/Vs value of less than 2.4. The slowness and amplitude of dipole shear wave are good lithology discriminators that have great differences between heavy oil sands and shales. The heavy oil sand reservoirs are anisotropic. The crossover phenomenon in the fast and slow dipole shear wave dispersion curves indicates that the anisotropy is induced by unbalanced horizontal stress in the region.

Xiaohua Che

2014-01-01T23:59:59.000Z

486

A stability verification technique using acoustic emission for an HTS monofilar component  

Science Journals Connector (OSTI)

This paper reports an acoustic emission (AE) technique that was developed for detecting the quenching and stability characteristics of high-temperature superconductors (HTSs), particularly a BSCCO-2212 monofilar component for a resistive superconducting fault current limiter (SFCL) system. The 24 kV class SFCL, which was recently developed by the KEPRI-LSIS collaboration group in Korea, requires almost 150 BSCCO-2212 monofilar components. A BSCCO-2212 monofilar HTS undergoes thermal and mechanical stress creating microcracks during and after quenching or reaching a fault state such as during a short-circuit test. The AE technique is a useful tool for detecting the presence of transient heating and the existence of hot spots within the superconducting fault current component.

H M Kim; K B Park; B W Lee; I S Oh; J W Sim; O B Hyun; Y Iwasa; H G Lee

2007-01-01T23:59:59.000Z

487

Development of electromagnetic acoustic transducer (EMAT) phased arrays for SFR inspection  

SciTech Connect

A long-standing problem for Sodium cooled Fast Reactor (SFR) instrumentation is the development of efficient under-sodium visualization systems adapted to the hot and opaque sodium environment. Electromagnetic Acoustic Transducers (EMAT) are potential candidates for a new generation of Ultrasonic Testing (UT) probes well-suited for SFR inspection that can overcome drawbacks of classical piezoelectric probes in sodium environment. Based on the use of new CIVA simulation tools, we have designed and optimized an advanced EMAT probe for under-sodium visualization. This has led to the development of a fully functional L-wave EMAT sensing system composed of 8 elements and a casing withstanding 200° C sodium inspection. Laboratory experiments demonstrated the probe's ability to sweep an ultrasonic beam to an angle of 15 degrees. Testing in a specialized sodium facility has shown that it was possible to obtain pulse-echo signals from a target under several different angles from a fixed position.

Le Bourdais, Florian; Marchand, Benoît [CEA LIST, Centre de Saclay F-91191 Gif-sur-Yvette (France)

2014-02-18T23:59:59.000Z

488

Building Energy Software Tools Directory: CBE UFAD Cooling Design Tool  

NLE Websites -- All DOE Office Websites (Extended Search)

CBE UFAD Cooling Design Tool CBE UFAD Cooling Design Tool CBE UFAD Cooling Design Tool logo The Center for the Built Environment's research team has developed a simplified, practical design procedure and associated software tool to determine cooling load requirements of underfloor air distribution (UFAD) systems. These are provided to improve the accuracy of airflow, thermal decay data, thermal comfort calculations, system design, and the operation of UFAD buildings. Screen Shots Keywords UFAD, underfloor, Cooling load calculator, cooling, stratification, thermal comfort Validation/Testing N/A Expertise Required Knowledge about cooling load calculation and UFAD. Users N/A Audience Practicing architects and engineers involved in the design, specification, and analysis of UFADs. Instructional tool in colleges and universities.

489

Acoustic Logs At Coso Geothermal Area (1977) | Open Energy Information  

Open Energy Info (EERE)

Coso Geothermal Area (1977) Coso Geothermal Area (1977) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Acoustic Logs At Coso Geothermal Area (1977) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Acoustic Logs Activity Date 1977 Usefulness not indicated DOE-funding Unknown Notes Acoustic logs indicate fractured rock and potentially permeable zones. References Galbraith, R. M. (1 May 1978) Geological and geophysical analysis of Coso Geothermal Exploration Hole No. 1 (CGEH-1), Coso Hot Springs KGRA, California Goranson, C.; Schroeder, R. (1 June 1978) Static downhole characteristics of well CGEH-1 at Coso Hot Springs, China Lake, California Retrieved from "http://en.openei.org/w/index.php?title=Acoustic_Logs_At_Coso_Geothermal_Area_(1977)&oldid=510216"

490

On acoustic cavitation of slightly subcritical bubbles Anthony Harkin  

E-Print Network (OSTI)

On acoustic cavitation of slightly subcritical bubbles Anthony Harkin Department of Mathematics, such as submicron air bubbles in water, where the natural oscilla- tion frequencies are high. In contrast, when

Kaper, Tasso J.

491

Acoustic radiation from a plate with sinusoidally varying properties  

Science Journals Connector (OSTI)

The acoustic radiation produced by an infinite flat plate with sinusoidally varying properties and driven by a distributed load is presented. The plate is assumed to be thin with constant thickness but with stiffness varying sinusoidally along the axis. The analysis is an extension of the work previously reported [M. Pierucci J. Acoust. Soc. Am. Suppl. 1 79 S35 (1986)]. The analysis consists of solving the coupled fluid?structure equations with the added difficulty of having nonconstant coefficients. The system reduces to a convoluted equation which has been solved analytically. The results indicate the presence of acoustic pressure components radiating in directions that are related to the difference between the forcing function wavenumber and the wavenumber of the stiffness variation. Acoustic radiation patterns will be presented.

Mauro Pierucci

1987-01-01T23:59:59.000Z

492

FOR ASSESSING ROOM ACOUSTICS Jasper van Dorp Schuitman  

E-Print Network (OSTI)

AUDITORY MODELLING FOR ASSESSING ROOM ACOUSTICS Jasper van Dorp Schuitman #12;Auditory modelling Promoties, in het openbaar te verdedigen op donderdag 15 september 2011 om 10:00 uur door Jasper VAN DORP

493

Purely Gasdynamic Multidimensional Indirect Detonation Initiation Using Localized Acoustic  

E-Print Network (OSTI)

Purely Gasdynamic Multidimensional Indirect Detonation Initiation Using Localized Acoustic detonation initiation process is presented that can be independent of diffusion, viscosity and turbulence to accelerate detonation formation. It is shown that given sufficient resolution, the detonation formation time

Vasilyev, Oleg V.

494

Design parameters for acoustical treatments in a subway station renovation  

Science Journals Connector (OSTI)

Acoustical treatments have been incorporated into the design of renovations in the Essex Street MBTA Station in Boston. Criteria were developed relating to noise reduction from train noise on the platform and sound isolation between northbound and southbound sides of the station. This paper discusses the limitations on acoustical treatments imposed by the functional and structural restraints of the station including the availability of surfaces to be treated safety access requirements maintenance and durability restrictions and architectural goals relating to aesthetics lighting and textures. The presentation focuses on the manner in which the acoustical consultant and architect responded to each other's goals and the way that conflicts were resolved. Measurements were made of existing acoustical parameters. The renovations are presently under construction.

Carl J. Rosenberg; Neville A. Powers; Allen M. Lieb

1976-01-01T23:59:59.000Z

495

Acoustic Waveform Logging - Advances In Theory And Application  

E-Print Network (OSTI)

Full-waveform acoustic logging has made significant advances in both theory and application in recent years, and these advances have greatly increased the capability of log analysts to measure the physical properties of ...

Cheng, C. H.

496

Ion-acoustic cnoidal waves in a quantum plasma  

SciTech Connect

Nonlinear ion-acoustic cnoidal wave structures are studied in an unmagnetized quantum plasma. Using the reductive perturbation method, a Korteweg-de Vries equation is derived for appropriate boundary conditions and nonlinear periodic wave solutions are obtained. The corresponding analytical solution and numerical plots of the ion-acoustic cnoidal waves and solitons in the phase plane are presented using the Sagdeev pseudo-potential approach. The variations in the nonlinear potential of the ion-acoustic cnoidal waves are studied at different values of quantum parameter H{sub e} which is the ratio of electron plasmon energy to electron Fermi energy defined for degenerate electrons. It is found that both compressive and rarefactive ion-acoustic cnoidal wave structures are formed depending on the value of the quantum parameter. The dependence of the wavelength and frequency on nonlinear wave amplitude is also presented.

Mahmood, S. [Physics Institute, Federal University of Rio Grande do Sul, RS, Porto Alegre 915051-970 (Brazil); Theoretical Physics Division (TPD), PINSTECH P.O. Nilore, Islamabad 44000 (Pakistan); Haas, F. [Physics Institute, Federal University of Rio Grande do Sul, RS, Porto Alegre 915051-970 (Brazil)

2014-10-15T23:59:59.000Z

497

Development of Combined Opto-Acoustical Sensor Modules  

E-Print Network (OSTI)

The faint fluxes of cosmic neutrinos expected at very high energies require large instrumented detector volumes. The necessary volumes in combination with a sufficient shielding against background constitute forbidding and complex environments (e.g. the deep sea) as sites for neutrino telescopes. To withstand these environments and to assure the data quality, the sensors have to be reliable and their operation has to be as simple as possible. A compact sensor module design including all necessary components for data acquisition and module calibration would simplify the detector mechanics and ensures the long term operability of the detector. The compact design discussed here combines optical and acoustical sensors inside one module, therefore reducing electronics and additional external instruments for calibration purposes. In this design the acoustical sensor is primary used for acoustic positioning of the module. The module may als