Sample records for dr eddie red

  1. ORISE Faculty Research Experiences: Dr. Eddie Red

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy:Nanowire3627 FederalTransformers1 DIRECTOR YennelloPART I - THEEddie

  2. Semantic Awareness in Product Lifecycle Management Systems Casey James Baker, Douglas Eddy, Dr. Sundar Krishnamurty, Dr. Ian Grosse, Dr. Jack Wileden

    E-Print Network [OSTI]

    Mountziaris, T. J.

    Semantic Awareness in Product Lifecycle Management Systems Casey James Baker, Douglas Eddy, Dr enterprises turn to Product Lifecycle Management (PLM) systems to organize product development and to reduce), in which the PLM system was used to help with the design and fabrication of a product. Windchill

  3. Dr

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at1,066,688 760,877 951,322 1,381,127by Local(Dollars9.DomesticDr.

  4. Sliding Interfaces for Eddy Current Simulations

    E-Print Network [OSTI]

    Hiptmair, Ralf

    Sliding Interfaces for Eddy Current Simulations Raffael Casagrande Master Thesis Supervisor: Prof. Dr. Ralf Hiptmair Zürich, April 2013 #12;Contents Contents i 1. Introduction 1 2. Eddy Current-formulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4. The eddy current problem in a moving, solid body . . . . . . . . . . . . . 9 3. Discontinuous

  5. Sliding Interfaces for Eddy Current Simulations Raffael Casagrande

    E-Print Network [OSTI]

    Hiptmair, Ralf

    Sliding Interfaces for Eddy Current Simulations Raffael Casagrande Supervisor: Prof. Dr. Ralf Interfaces for Eddy Current April 17th, 2013 1 / 25 #12;Outline 1 Introduction Motivation 2 Deriving the eddy current model Maxwell's Equations in a moving frame The eddy current model in a moving frame 3

  6. PHOTOMETRIC REDSHIFTS AND SYSTEMATIC VARIATIONS IN THE SPECTRAL ENERGY DISTRIBUTIONS OF LUMINOUS RED GALAXIES FROM SDSS DR7

    SciTech Connect (OSTI)

    Greisel, N.; Seitz, S.; Bender, R.; Saglia, R. P.; Snigula, J. [Universitaets-Sternwarte Muenchen, Ludwig-Maximilians-Universitaet Muenchen, Scheinerstr. 1, D-81679 Muenchen (Germany); Drory, N., E-mail: greisel@usm.lmu.de [Max-Planck-Institut fuer extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching (Germany)

    2013-05-10T23:59:59.000Z

    We describe the construction of a template set of spectral energy distributions (SEDs) for the estimation of photometric redshifts of luminous red galaxies (LRGs) with a Bayesian template fitting method. By examining the color properties of several publicly available SED sets within a redshift range of 0 < z {approx}< 0.5 and comparing them to Sloan Digital Sky Survey (SDSS) Data Release 7 data, we show that only some of the investigated SEDs approximately match the colors of the LRG data throughout the redshift range, however not at the quantitative level required for precise photometric redshifts. This is because the SEDs of galaxies evolve with time (and redshift) and because at fixed redshift the LRG colors have an intrinsic spread such that they cannot be matched by one SED only. We generate new SEDs by superposing model SEDs of composite stellar populations with a burst model, allowing both components to be reddened by dust, in order to match the data in five different redshift bins. We select a set of SEDs which represents the LRG data in color space within five redshift bins, thus defining our new SED template set for photometric redshift estimates. The results we obtain with the new template set and our Bayesian template fitting photometric redshift code (PhotoZ) are nearly unbiased, with a scatter of {sigma}{sub {Delta}z} = 0.027 (including outliers), a fraction of catastrophic outliers (|z{sub phot} - z{sub spec}|/(1 + z{sub spec}) > 0.15) of {eta} = 0.12%, and a normalized median absolute rest frame deviation (NMAD) of {sigma}{sub NMAD} = 1.48 Multiplication-Sign MAD = 0.017 for non-outliers. We show that templates that optimally describe the brightest galaxies (-24.5 {<=} M{sub R} {<=} -22.7) indeed vary from z = 0.1 to z = 0.5, consistent with aging of the stellar population. Furthermore, we find that templates that optimally describe galaxies at z < 0.1 strongly differ as a function of the absolute magnitude of the galaxies, indicating an increase in star formation activity for less luminous galaxies. Our findings based on the photometry of the SDSS LRGs and our SED template fitting are supported by comparison to the average SDSS LRG spectra in different luminosity and redshift bins.

  7. Neurosciences Eddie Smith

    E-Print Network [OSTI]

    Lieb, Jason

    Ambulatory Care Thurston Bowles Neurosciences MBRB Carolina Inn Paul Green Graham Davis Lib Eddie Smith Field

  8. Dr. Henry Gremillion Dr. Sandra Andrieu

    E-Print Network [OSTI]

    Division Head Biomaterials Dr. Larry Bates Dr. Stephen Brisco Dr. John Dagate Ms. Jennifer HewDr. Tom. Zezhang (Tom) Wen Dr. Becky Worthylake Oral and Craniofacial Biology Dr. Jeffrey Green Dr. Peter Oliver

  9. Induced Currents, Eddy Currents and

    E-Print Network [OSTI]

    Tobar, Michael

    Lecture 11 Induced Currents, Eddy Currents and Maxwell's Equations 1 Faraday Disk Dynamo F = q Eddy Currents We have learnt that changing magnetic fields can induce electric fields in conductors 108 ms-1 16 #12;In this lecture and the next Eddy Currents: We have covered Sect. 29

  10. Dr. Gary Katz, Dr. Richard Navarro, Dr. Jimmie Flanagin, Dr. Penelope Collins, Dr. Ann Devaney, Dr. Shahnaz Lotfipour Congratulations to Dr. Jimmie Flanagin

    E-Print Network [OSTI]

    Loudon, Catherine

    Dr. Gary Katz, Dr. Richard Navarro, Dr. Jimmie Flanagin, Dr. Penelope Collins, Dr. Ann Devaney, Dr. Shahnaz Lotfipour Congratulations to Dr. Jimmie Flanagin CSU/UCI Joint Ed.D. in Educational Administration and Leadership Educational Technology Leadership Emphasis Congratulations to Dr. Jimmie Flanagin, who

  11. Sankalya Ambaaspitilya Dr. Randall Jeter

    E-Print Network [OSTI]

    Rock, Chris

    . Brian Reilly Emma Roberts Dr. Robert D. Bradley Christine Rodriguez Dr. Lauren Gollahon Stephen RoussosIntyre Megan Corley Dr. Robert D. Bradley Patrick Dennis Dr. Lauren Gollahon Priyanka de Silva Dr. Ximena Marchán-R. Dr. Baker & Dr. Strauss Matt Mauldin Dr. Robert D. Bradley Kathryn McDonald Dr. Strauss & Dr

  12. PROF. DR. BEATRIX BUSSE DR. ASTRID WIND

    E-Print Network [OSTI]

    Heermann, Dieter W.

    PROF. DR. BEATRIX BUSSE SPRECHERIN DR. ASTRID WIND KOORDINATORIN Vostr. 2, Geb. 37 69115 Heidelberg Tel 06221 54 3783 Fax 06221 54 3664 astrid.wind@zegk.uni-heidelberg.de Die Heidelberger;PROF. DR. BEATRIX BUSSE SPRECHERIN DR. ASTRID WIND KOORDINATORIN Vostr. 2, Geb. 37 69115 Heidelberg

  13. An avenue of eddies: Quantifying the biophysical properties of mesoscale eddies in the Tasman Sea

    E-Print Network [OSTI]

    Oke, Peter

    after separating from the coast. Through a 16-year analysis of Tasman Sea eddies, we identify a region of cyclonic and anticyclonic eddies within Eddy Avenue is 23% and 16% higher respectively than the broader Tasman Sea. We find that Eddy Avenue cyclonic and anti- cyclonic eddies have more strongly differentiated

  14. Eddie Smith Dean E. Smith

    E-Print Network [OSTI]

    Whitton, Mary C.

    Daniels Hill Ackland McCaskill Paul Green Eddie Smith Alumni Center Carmichael Auditorium Center Student Dean E. Smith Student Hall Kenan Field House Bookstore Affairs Stadium Kenan Hill Williams House Forest

  15. Eddy fluxes in baroclinic turbulence

    E-Print Network [OSTI]

    Thompson, Andrew F.

    2006-01-01T23:59:59.000Z

    near-inertial energy in an eddying ocean channel model. Geo-dissipation of tidal energy in the deep ocean inferred fromfor the Southern Ocean), the rate of energy input by wind

  16. Eddie Smith Dean E. Smith

    E-Print Network [OSTI]

    Doyle, Martin

    Excellence Center for Loudermilk Graham Memorial Daniels Hill Ackland McCaskill Paul Green Eddie Smith Alumni Carolina at Chapel Hill : 500 5000 Feet Student Life Classrooms Health Affairs Libraries Parking Decks

  17. Insert Title here Alex Liotta, Douglas Eddy, Dr. Sundar Krishnamurty, Dr. Ian Grosse

    E-Print Network [OSTI]

    Mountziaris, T. J.

    the engineering and business sides of a company through the concept called product lifecycle management (PLM a method to transfer data between protg and Windchill. WindchillProduct Lifecycle Management Classic The design of a product makes up a large part of the time and money required to bring the product

  18. Eddy current scanning at Fermilab

    SciTech Connect (OSTI)

    Boffo, C.; Bauer, P.; Foley, M.; /Fermilab; Brinkmann, A.; /DESY; Ozelis, J.; /Jefferson Lab

    2005-07-01T23:59:59.000Z

    In the framework of SRF cavity development, Fermilab is creating the infrastructure needed for the characterization of the material used in the cavity fabrication. An important step in the characterization of ''as received'' niobium sheets is the eddy current scanning. Eddy current scanning is a non-destructive technique first adopted and further developed by DESY with the purpose of checking the cavity material for sub-surface defects and inclusions. Fermilab has received and further upgraded a commercial eddy current scanner previously used for the SNS project. The upgrading process included developing new filtering software. This scanner is now used daily to scan the niobium sheets for the Fermilab third harmonic and transverse deflecting cavities. This paper gives a status report on the scanning results obtained so far, including a discussion of the typology of signals being detected. We also report on the efforts to calibrate this scanner, a work conducted in collaboration with DESY.

  19. Expert system for analyzing eddy current measurements

    DOE Patents [OSTI]

    Levy, Arthur J. (Schenectady, NY); Oppenlander, Jane E. (Scotia, NY); Brudnoy, David M. (Albany, NY); Englund, James M. (Clifton Park, NY); Loomis, Kent C. (Clifton Park, NY)

    1994-01-01T23:59:59.000Z

    A method and apparatus (called DODGER) analyzes eddy current data for heat exchanger tubes or any other metallic object. DODGER uses an expert system to analyze eddy current data by reasoning with uncertainty and pattern recognition. The expert system permits DODGER to analyze eddy current data intelligently, and obviate operator uncertainty by analyzing the data in a uniform and consistent manner.

  20. Red Sky with Red Mesa

    ScienceCinema (OSTI)

    None

    2014-06-23T23:59:59.000Z

    The Red Sky/Red Mesa supercomputing platform dramatically reduces the time required to simulate complex fuel models, from 4-6 months to just 4 weeks, allowing researchers to accelerate the pace at which they can address these complex problems. Its speed also reduces the need for laboratory and field testing, allowing for energy reduction far beyond data center walls.

  1. Alcian Blue Alizarin Red Skeletal Staining October 2003

    E-Print Network [OSTI]

    De Robertis, Eddy M.

    Alcian Blue ­ Alizarin Red Skeletal Staining October 2003 Eddy M. De Robertis 1. Dissect mice damage. 3. Replace 95% ethanol with Alcian blue staining solution for 1-3 days slowly rocking at room days. 4. Replace Alcian blue solution with 95% ethanol for 6 hours slowly rocking at room temperature

  2. Contrasting survival strategies of hatchery and wild red drum: implications for stock enhancement

    E-Print Network [OSTI]

    Beck, Jessica Louise

    2009-05-15T23:59:59.000Z

    . Marshall Kirk O. Winemiller James L. Pinckney Gregory W. Stunz Head of Department, Thomas E. Lacher May 2008 Major Subject: Wildlife and Fisheries Sciences iii ABSTRACT Contrasting Survival Strategies of Hatchery and Wild Red Drum... of the Rooker Lab. Many thanks to my committee members, Dr. Christopher Marshall, Dr. Kirk Winemiller, Dr. James Pinckney, and Dr. Gregory Stunz, for their insight and suggestions which greatly improved the content and quality of my dissertation research...

  3. Eddy mean flow decomposition and eddy diffusivity estimates in the tropical Pacific Ocean

    E-Print Network [OSTI]

    Eddy mean flow decomposition and eddy diffusivity estimates in the tropical Pacific Ocean: 2] Eddy diffusivity of the surface velocity field in the tropical Pacific Ocean was estimated using diffusivity estimates in the tropical Pacific Ocean: 2. Results, J. Geophys. Res., 107(C10), 3154, doi:10

  4. A new 3-D EDDY current model

    SciTech Connect (OSTI)

    Polak, S.J.; van Welij, J.S.; Wachters, A.J.H.

    1983-11-01T23:59:59.000Z

    This paper presents a new EDDY current model. This model minimizes the number of unknown per point. The authors also discuss the uniqueness aspects involved.

  5. Master Thesis Proposal Eddy Current Imaging of Electrically Conducting Media

    E-Print Network [OSTI]

    Vuik, Kees

    Master Thesis Proposal Eddy Current Imaging of Electrically Conducting Media Domenico Lahaye and optimization techniques en- abling the eddy current imaging of electrically conducting media. Examples: perform a literature study into topics such as eddy current imaging, inverse problems including

  6. Vehicle Technologies Office Merit Review 2015: Large Eddy Simulation...

    Office of Environmental Management (EM)

    Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research Vehicle Technologies Office Merit Review 2015: Large Eddy Simulation (LES) Applied to Advanced Engine...

  7. Eddy Correlation Systems Receive Upgrade

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work4/11ComputationalEd Westcott: Legacy in ... EdEddie2

  8. New Eddy Correlation Systems Installed

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy:Nanowire Solar541,9337, 2011R - 445 CU - 2 3NewNew3 New Eddy

  9. Profile hidden Markov models Sean R. Eddy

    E-Print Network [OSTI]

    Eddy, Sean

    Profile hidden Markov models Sean R. Eddy Dept. of Genetics, Washington University School of Medicine 4566 Scott Ave., St. Louis MO 63110 USA eddy@genetics.wustl.edu keywords: profiles, hidden Markov models, protein families Abstract Summary: I review the recent literature on profile hid den Markov

  10. Anonymous Donor Dr. Sara Abosch

    E-Print Network [OSTI]

    Dasgupta, Dipankar

    and Lynette Black Blind Bear Bluff City Coffee Dr. Mark E. Bradshaw Dr. Peter J. Brand Dr. Linde M. Brocato and Mr. Louis Paris Jr. Fundamentalist Church of Jesus Christ of Latter Day Saints G and W Diesel Service

  11. Eddy current technique for predicting burst pressure

    DOE Patents [OSTI]

    Petri, Mark C. (Yorkville, IL); Kupperman, David S. (Oak Park, IL); Morman, James A. (Woodridge, IL); Reifman, Jaques (Western Springs, IL); Wei, Thomas Y. C. (Downers Grove, IL)

    2003-01-01T23:59:59.000Z

    A signal processing technique which correlates eddy current inspection data from a tube having a critical tubing defect with a range of predicted burst pressures for the tube is provided. The method can directly correlate the raw eddy current inspection data representing the critical tubing defect with the range of burst pressures using a regression technique, preferably an artificial neural network. Alternatively, the technique deconvolves the raw eddy current inspection data into a set of undistorted signals, each of which represents a separate defect of the tube. The undistorted defect signal which represents the critical tubing defect is related to a range of burst pressures utilizing a regression technique.

  12. Rotating concave eddy current probe

    SciTech Connect (OSTI)

    Roach, Dennis P. (Albuquerque, NM); Walkington, Phil (Albuquerque, NM); Rackow, Kirk A. (Albuquerque, NM); Hohman, Ed (Albuquerque, NM)

    2008-04-01T23:59:59.000Z

    A rotating concave eddy current probe for detecting fatigue cracks hidden from view underneath the head of a raised head fastener, such as a buttonhead-type rivet, used to join together structural skins, such as aluminum aircraft skins. The probe has a recessed concave dimple in its bottom surface that closely conforms to the shape of the raised head. The concave dimple holds the probe in good alignment on top of the rivet while the probe is rotated around the rivet's centerline. One or more magnetic coils are rigidly embedded within the probe's cylindrical body, which is made of a non-conducting material. This design overcomes the inspection impediment associated with widely varying conductivity in fastened joints.

  13. Eddy-current-induced multipole field calculations.

    SciTech Connect (OSTI)

    Sereno, N. S.; Kim, S. H.

    2003-10-15T23:59:59.000Z

    Time-varying magnetic fields of magnets in booster accelerators induce substantial eddy currents in the vacuum chambers. The eddy currents in turn act to produce various multipole fields that act on the beam. These fields must be taken into account when doing a lattice design. In the APS booster, the relatively long dipole magnets (3 meters) are linearly ramped to accelerate the injected 325 MeV beam to 7 GeV. Substantial dipole and sextupole fields are generated in the elliptical vacuum chamber from the induced eddy currents. In this note, formulas for the induced dipole and sextupole fields are derived for elliptical and rectangular vacuum chambers for a time-varying dipole field. A discussion is given on how to generalize this derivation method to include eddy-current-induced multipole fields from higher multipole magnets (quadrupole, sextupole, etc.). Finally, transient effects are considered.

  14. Eddy Current Model of Ball Lightning

    E-Print Network [OSTI]

    J. D. Shelton

    2011-02-07T23:59:59.000Z

    Eddy Current Model of Ball Lightning Calculations show that high-energy ball lightning may consist of a ball of plasma containing a large circular electric current arising as an eddy current generated by lightning. Synthetic ball lightning might serve as a method of plasma confinement for purposes of nuclear fusion. In this paper, three articles concerning ball lightning and the related phenomenon of large ball lightning are combined to provide insight into this rarely glimpsed occurrence.

  15. My Biography DR. M.E. FAYAD is a Full Professor of Computer Engineering at San Jose State University

    E-Print Network [OSTI]

    Fayad, Mohamed

    (02), and Spain (02), Brazil (04), a founder of 7 new online journals, NASA Red Team Review of QRAS in progress. Dr. Fayad is also filling for 8 new, valuable, and innovative patents and developed over 800

  16. Red River Compact (Texas)

    Broader source: Energy.gov [DOE]

    The Red River Compact Commission administers the Red River Compact to ensure that Texas receives its equitable share of quality water from the Red River and its tributaries as apportioned by the...

  17. Dr. Beverly Adams ZCDH (Zone Clinical Department

    E-Print Network [OSTI]

    Habib, Ayman

    . Oakander PLC POS Dr. M. Oakander Shared Mental Health Care Dr. T. Prior FMC Mental Health Day Treatment Rehabillitation Dr. Hugh Colohan Section Chief Addictions and Claresholm Dr. H. Colohan Claresholm Care Centre Dr & Adolescent Inpatient and Day Services Dr. C. Lakusta Adolescent Day Treatment Program Dr. J. Cohen FMC Unit

  18. Prof Dr Mr Mrs Ms Prof Dr Mr Mrs Ms

    E-Print Network [OSTI]

    Xu, Jianliang

    Prof Dr Mr Mrs Ms Prof Dr Mr Mrs Ms Standard Room Request Payment Card No Expiry Date Contact or a 1-night applicable room charge will be levied as cancellation charge. * Daily rate will be subject

  19. CHANGES IN QUANTUM YIELD OF PHOTOSYNTHESIS IN THE RED ALGA Porphyridium cruentum

    E-Print Network [OSTI]

    Govindjee

    CHANGES IN QUANTUM YIELD OF PHOTOSYNTHESIS IN THE RED ALGA Porphyridium cruentum CAUSED BY STEPWISE From the Photosynthesis Research Laboratory, Botany Department, University of Illinois, Urbana. Dr of photosynthesis in the red alga Porphyridium cruentum, and the spectral compo- sition of light, changed

  20. Visualization and analysis of eddies in a global ocean simulation

    SciTech Connect (OSTI)

    Williams, Sean J [Los Alamos National Laboratory; Hecht, Matthew W [Los Alamos National Laboratory; Petersen, Mark [Los Alamos National Laboratory; Strelitz, Richard [Los Alamos National Laboratory; Maltrud, Mathew E [Los Alamos National Laboratory; Ahrens, James P [Los Alamos National Laboratory; Hlawitschka, Mario [UC DAVIS; Hamann, Bernd [UC DAVIS

    2010-10-15T23:59:59.000Z

    Eddies at a scale of approximately one hundred kilometers have been shown to be surprisingly important to understanding large-scale transport of heat and nutrients in the ocean. Due to difficulties in observing the ocean directly, the behavior of eddies below the surface is not very well understood. To fill this gap, we employ a high-resolution simulation of the ocean developed at Los Alamos National Laboratory. Using large-scale parallel visualization and analysis tools, we produce three-dimensional images of ocean eddies, and also generate a census of eddy distribution and shape averaged over multiple simulation time steps, resulting in a world map of eddy characteristics. As expected from observational studies, our census reveals a higher concentration of eddies at the mid-latitudes than the equator. Our analysis further shows that mid-latitude eddies are thicker, within a range of 1000-2000m, while equatorial eddies are less than 100m thick.

  1. Glider Path-Planning for Optimal Sampling of Mesoscale Eddies

    E-Print Network [OSTI]

    Smith, Ryan N.

    Glider Path-Planning for Optimal Sampling of Mesoscale Eddies Daniel Hernandez1 , Ryan Smith2 these, mesoscale eddies are of particular interest due to the relevance they have in many oceano

  2. Effects of winds and Caribbean eddies on the frequency of Loop Current eddy shedding: A numerical model study

    E-Print Network [OSTI]

    of Hispaniola, warm eddies are spun up by the local wind stress curl. This type of eddy drifts southwestward for spin up and drift from Hispaniola is about 100 days. Satellite data indicate the existence

  3. Eddy formation and propagation in the eastern tropical Pacific

    E-Print Network [OSTI]

    Jhingran, Vikas Gopal

    1997-01-01T23:59:59.000Z

    eddies are caused by winds blowing offshore from the coast of Central America. Plots of eddy tracks from TOPEX data show that some of these eddies last for over 6 months and travel more than 250 of longitude toward the west. Others go more towards...

  4. Eddy Currents and Magnetic Calibrations in LDX using a

    E-Print Network [OSTI]

    Eddy Currents and Magnetic Calibrations in LDX using a "Copper Plasma" D.P. Boyle, PPPL M.E. Mauel Calibrate magnetic diagnostics positions and gains Find eddy current decay times Copper Plasma Operation electronically Would be better to measure positions and total gains magnetically #12;Goal: Eddy Currents Magnetic

  5. Eddy-current testing with the Expected Improvement optimization algorithm

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Eddy-current testing with the Expected Improvement optimization algorithm Sandor Bilicz , Emmanuel presents an inverse problem methodology in the domain of non-destructive testing, and more precisely eddy-current in the light of preliminary numerical examples obtained using synthetic data. Keywords: eddy current testing

  6. Automatic Detection of Defects in Riveted Lapjoints using Eddy Current

    E-Print Network [OSTI]

    Automatic Detection of Defects in Riveted Lapjoints using Eddy Current Fredrik Lingvall Tadeusz originating from rivet holes in a riveted lapjoint using eddy current (EC) inspection is presented consisted of median filtering, rotation and debiasing of the eddy current pattern. The rotation

  7. A JUSTIFICATION OF EDDY CURRENTS MODEL FOR THE MAXWELL EQUATIONS

    E-Print Network [OSTI]

    Buffa, Annalisa

    A JUSTIFICATION OF EDDY CURRENTS MODEL FOR THE MAXWELL EQUATIONS H. AMMARI, A. BUFFA, AND J.-C. N­1823 Abstract. This paper is concerned with the approximation of the Maxwell equations by the eddy currents model, which appears as a correction of the quasi-static model. The eddy currents model is obtained

  8. MODELING OF EDDY CURRENT LOSS AND TEMPERATURE OF THE MAGNETS

    E-Print Network [OSTI]

    Mi, Chunting "Chris"

    MODELING OF EDDY CURRENT LOSS AND TEMPERATURE OF THE MAGNETS IN PERMANENT MAGNET MACHINES@umich.edu Received 24 November 2010 Accepted 16 June 2011 The eddy current loss in the magnets of permanent magnet- mium-iron-boron (NdFeB), and slot/tooth harmonics, there is eddy current loss generated inside

  9. Nondestructive Evaluation of Plates Using Eddy Current Methods

    E-Print Network [OSTI]

    Nondestructive Evaluation of Plates Using Eddy Current Methods David C. Dobson Department in structures using eddy current methods is investigated. The goal of this work is to assess the extent to which a conductivity anomaly from eddy current data is quite unstable, and a method based on leastsquares principle

  10. STATISTICAL ASSESSMENT OF PROBABILITY OF DETECTION FOR AUTOMATED EDDY CURRENT

    E-Print Network [OSTI]

    STATISTICAL ASSESSMENT OF PROBABILITY OF DETECTION FOR AUTOMATED EDDY CURRENT NONDESTRUCTIVE for Nondestructive Evaluation, Iowa State University, Ames, Iowa, USA Abstract: Eddy current inspection is widely response collected using our motion controlled eddy current inspection system, are used in the analysis

  11. Technical Note Correction of Eddy-Current Distortions in Diffusion

    E-Print Network [OSTI]

    Technical Note Correction of Eddy-Current Distortions in Diffusion Tensor Images Using the Known,2 Purpose: To correct eddy-current artifacts in diffusion ten- sor (DT) images without the need to obtain- tortions caused by eddy currents induced by large diffusion gradients. We propose a new postacquisition

  12. WIRELESS EDDY CURRENT PROBE FOR ENGINE HEALTH , B. Graubard1

    E-Print Network [OSTI]

    Dickerson, Julie A.

    WIRELESS EDDY CURRENT PROBE FOR ENGINE HEALTH MONITORING M. Reid1 , B. Graubard1 , R. J. Weber1 , J. The first prototype wireless eddy current (EC) probe for on-wing inspection was demonstrated in a F100 PW of safety significant propulsion system malfunctions. Data from 2 MHz Eddy Current probes was transmitted

  13. ADAPTIVE FINITE ELEMENT FREQUENCY DOMAIN METHOD FOR EDDY CURRENT PROBLEMS

    E-Print Network [OSTI]

    Zheng, Weiying

    ADAPTIVE FINITE ELEMENT FREQUENCY DOMAIN METHOD FOR EDDY CURRENT PROBLEMS WEIYING ZHENG-harmonic eddy current problems in the case of three-dimensional isotropic and linear materials. We adopt. Time-harmonic Maxwell's equations, eddy current, adaptive finite element method, multiply connected

  14. HHFW (High Harmonic Fast Wave) Eddy Current Analysis for Antenna

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    1 NSTX HHFW (High Harmonic Fast Wave) Eddy Current Analysis for Antenna NSTX-CALC-24-03-01 June 1 performed.) The model was first built for NSTX to verify the eddy current effect on antenna during plasma force of the induced eddy current in the components. The force data was transferred to the structural

  15. Nondestructive Evaluation of Plates Using Eddy Current Methods

    E-Print Network [OSTI]

    Santosa, Fadil

    Nondestructive Evaluation of Plates Using Eddy Current Methods David C. Dobson \\Lambda Department in structures using eddy current methods is investigated. The goal of this work is to assess the extent to which anomaly from eddy current data is quite unstable, and a method based on leastsquares principle would fail

  16. Quantitative Imaging of Corrosion in Plates by Eddy Current Methods

    E-Print Network [OSTI]

    Santosa, Fadil

    Quantitative Imaging of Corrosion in Plates by Eddy Current Methods Bruno Luong \\Lambda and Fadil the problem of determining material loss due to cor­ rosion in a plate. Eddy current data are collected on one the relationship between eddy current loop impedance change with the loss profile. In this context, we show

  17. CHARACTERIZATION OF MAGNETRON SPUTTERED COATINGS BY PULSED EDDY CURRENT TECHNIQUES

    E-Print Network [OSTI]

    Danon, Yaron

    CHARACTERIZATION OF MAGNETRON SPUTTERED COATINGS BY PULSED EDDY CURRENT TECHNIQUES Chris Mulligan1, Troy, NY 12180 ABSTRACT. A method that uses induced pulsed eddy currents for characterization of thick the correlation between coating properties, such as density and purity, and eddy current measured resistivity

  18. Surfzone eddies in strong alongshore currents: Forced or Instabilities?

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    Surfzone eddies in strong alongshore currents: Forced or Instabilities? Falk Feddersen Associate by surfzone 2D turbulent eddies, which have length-scales > the water depth. Our group's results regarding surfzone eddy-induced mixing learned from dye, drifter, theory, and modeling will be reviewed - however

  19. Nondestructive Evaluation of Plates Using Eddy Current Methods

    E-Print Network [OSTI]

    Dobson, David C.

    Nondestructive Evaluation of Plates Using Eddy Current Methods David C. Dobson Department in structures using eddy current methods is investigated. The goal of this work is to assess the extent to which anomaly from eddy current data is quite unstable, and a method based on leastsquares principle would fail

  20. Real Time Computational Algorithms for Eddy Current Based Damage Detection

    E-Print Network [OSTI]

    Real Time Computational Algorithms for Eddy Current Based Damage Detection H. T. Banks y, Michele L such damages by application of an eddy current based technique coupled with reduced order modeling. We begin by developing a model for a speci#12;c eddy current method in which we make some simplifying assumptions

  1. Numerical Analysis of Nonlinear Multiharmonic Eddy Current Problems

    E-Print Network [OSTI]

    Schoeberl, Joachim

    Numerical Analysis of Nonlinear Multiharmonic Eddy Current Problems F. Bachinger U. Langer J. Schoberl April 2004 Abstract This work provides a complete analysis of eddy current problems, rang- ing from at providing a complete analysis of general nonlinear eddy current problems and their numerical treatment

  2. Surf zone eddies coupled with rip current morphology

    E-Print Network [OSTI]

    Kirby, James T.

    Surf zone eddies coupled with rip current morphology Jamie H. MacMahan Oceanography Department. Thornton, and T. P. Stanton (2004), Surf zone eddies coupled with rip current morphology, J. Geophys. Res) surf zone eddies (SZEs) were observed on a beach composed of shore-connected shoals with quasi

  3. Corner singularities of Maxwell interface and eddy current problems

    E-Print Network [OSTI]

    Costabel, Martin

    Corner singularities of Maxwell interface and eddy current problems Martin Costabel, Monique Dauge permittivity/conductivity tends to zero (the eddy current limit). Corner singularities of the Maxwell transmission problem and also of the eddy current model have been described elsewhere [6, 7]. Here we

  4. Eddy formation and propagation in the eastern tropical Pacific

    E-Print Network [OSTI]

    Jhingran, Vikas Gopal

    1997-01-01T23:59:59.000Z

    eddies are caused by winds blowing offshore from the coast of Central America. Plots of eddy tracks from TOPEX data show that some of these eddies last for over 6 months and travel more than 250 of longitude toward the west. Others go more towards...

  5. MESOSCALE EDDIES Peter B. Rhines, University of Washington,

    E-Print Network [OSTI]

    MESOSCALE EDDIES Peter B. Rhines, University of Washington, School of Oceanography, Box 357940, Seattle, WA 98195 7940, USA Copyright ^ 2001 Academic Press doi:10.1006/rwos.2001.0143 Mesoscale eddies that strongly feel viscosity, to `mesoscale eddies' that strongly feel the Earth's rota- tion, to great `gyres

  6. Casimir interaction from magnetically coupled eddy currents

    E-Print Network [OSTI]

    Francesco Intravaia; Carsten Henkel

    2009-09-06T23:59:59.000Z

    We study the quantum and thermal fluctuations of eddy (Foucault) currents in thick metallic plates. A Casimir interaction between two plates arises from the coupling via quasi-static magnetic fields. As a function of distance, the relevant eddy current modes cross over from a quantum to a thermal regime. These modes alone reproduce previously discussed thermal anomalies of the electromagnetic Casimir interaction between good conductors. In particular, they provide a physical picture for the Casimir entropy whose nonzero value at zero temperature arises from a correlated, glassy state.

  7. Casimir Interaction from Magnetically Coupled Eddy Currents

    SciTech Connect (OSTI)

    Intravaia, Francesco; Henkel, Carsten [Institut fuer Physik und Astronomie, Universitaet Potsdam, 14476 Potsdam (Germany)

    2009-09-25T23:59:59.000Z

    We study the quantum and thermal fluctuations of eddy (Foucault) currents in thick metallic plates. A Casimir interaction between two plates arises from the coupling via quasistatic magnetic fields. As a function of distance, the relevant eddy current modes cross over from a quantum to a thermal regime. These modes alone reproduce previously discussed thermal anomalies of the electromagnetic Casimir interaction between good conductors. In particular, they provide a physical picture for the Casimir entropy whose nonzero value at zero temperature arises from a correlated, glassy state.

  8. Eddy Correlation Flux Measurement System (ECOR) Handbook

    SciTech Connect (OSTI)

    Cook, DR

    2011-01-31T23:59:59.000Z

    The eddy correlation (ECOR) flux measurement system provides in situ, half-hour measurements of the surface turbulent fluxes of momentum, sensible heat, latent heat, and carbon dioxide (CO2) (and methane at one Southern Great Plains extended facility (SGP EF) and the North Slope of Alaska Central Facility (NSA CF). The fluxes are obtained with the eddy covariance technique, which involves correlation of the vertical wind component with the horizontal wind component, the air temperature, the water vapor density, and the CO2 concentration.

  9. Isolating the role of mesoscale eddies in mixing of a passive tracer in an eddy resolving model

    E-Print Network [OSTI]

    Miami, University of

    Isolating the role of mesoscale eddies in mixing of a passive tracer in an eddy resolving model February 2008; published 16 May 2008. [1] This study examines the role of mesoscale eddies in distribution was replaced by a down-gradient diffusive parameterization. Our results demonstrate that advection by mesoscale

  10. Accelerated Profile HMM Searches Sean R. Eddy *

    E-Print Network [OSTI]

    Eddy, Sean

    Accelerated Profile HMM Searches Sean R. Eddy * Abstract Profile hidden Markov models (profile HMMs search. However, practical use of profile HMM methods has been hindered by the computational expense of existing software implementations. Here I describe an acceleration heuristic for profile HMMs

  11. Agrar-und Umweltwissenschaftliche Fakultt (AUF) Dekan: Prof. Dr. Elmar Mohr Prodekanin: Prof. Dr. Inge Broer

    E-Print Network [OSTI]

    Rostock, Universitt

    : N.N. 40 00 Theologische Fakultt (THF) Dekan: Prof. Dr. Klaus Hock Prodekan: Prof. Dr. Heinrich (MNF) Dekan: Prof. Dr. Klaus Neymeyr Prodekan: Prof. Dr. Martin Kckerling Studiendekan: Prof. Dr. Dieter Bauer 60 00 Juristische Fakultt (JUF) Dekan: Prof. Dr. Hubertus Gersdorf Prodekan: Prof. Dr

  12. Interface Exchange as an Indicator for Eddy Heat Transport

    SciTech Connect (OSTI)

    Petersen, Mark R. [Los Alamos National Laboratory; Williams, Sean J. [Los Alamos National Laboratory; Hecht, Matthew W. [Los Alamos National Laboratory; Maltrud, Mathew E. [Los Alamos National Laboratory; Hamann, Bernd [U of California Davis; Patchett, John M. [Los Alamos National Laboratory; Ahrens, James P. [Los Alamos National Laboratory

    2012-06-12T23:59:59.000Z

    The ocean contains many large-scale, long-lived vortices, called mesoscale eddies, that are believed to have a role in the transport and redistribution of salt, heat, and nutrients throughout the ocean. Determining this role, however, has proven to be a challenge, since the mechanics of eddies are only partly understood; a standard definition for these ocean eddies does not exist and, therefore, scientifically meaningful, robust methods for eddy extraction, characterization, tracking and visualization remain a challenge. In order to shed light on the nature and potential roles of eddies, we have combined our previous research on eddy identification and tracking, and have used those approaches as the basis for analysis-driven computational experiments on the nature of eddies. Based on the resulting visualizations of eddy behavior, we have devised a new metric to characterize the transfer of water into and out of eddies across their boundary, and have developed visualization methods for this new metric to provide clues about the role eddies play in the global ocean and, potentially, climate change.

  13. Dr. Waref Azmeh

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract ManagementDiscovering HowAna Moore AnneElizabethDr. Robinson

  14. Dr. Robert Tribble

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday, April

  15. Dr. Peter S. Winokur- Biography

    Broader source: Energy.gov [DOE]

    Dr. Peter S. Winokur of Maryland has been appointed a Member of the Defense Nuclear Facilities Safety Board for a term expiring October 18, 2014.

  16. al hospital dr: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Information Technology) Prof. Dr. Andreas Rausch (Software Systems Engineering Zachmann, Gabriel 69 Prof. Dr. med. Ch. Baum, Prof. Dr. med. K. Brand, Prof. Dr. med. A....

  17. al dr pablo: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Information Technology) Prof. Dr. Andreas Rausch (Software Systems Engineering Zachmann, Gabriel 127 Prof. Dr. med. Ch. Baum, Prof. Dr. med. K. Brand, Prof. Dr. med. A....

  18. Contoured Surface Eddy Current Inspection System

    DOE Patents [OSTI]

    Batzinger, Thomas James (Burnt Hills, NY); Fulton, James Paul (Clifton Park, NY); Rose, Curtis Wayne (Mechanicville, NY); Perocchi, Lee Cranford (Schenectady, NY)

    2003-04-08T23:59:59.000Z

    Eddy current inspection of a contoured surface of a workpiece is performed by forming a backing piece of flexible, resiliently yieldable material with a contoured exterior surface conforming in shape to the workpiece contoured surface. The backing piece is preferably cast in place so as to conform to the workpiece contoured surface. A flexible eddy current array probe is attached to the contoured exterior surface of the backing piece such that the probe faces the contoured surface of the workpiece to be inspected when the backing piece is disposed adjacent to the workpiece. The backing piece is then expanded volumetrically by inserting at least one shim into a slot in the backing piece to provide sufficient contact pressure between the probe and the workpiece contoured surface to enable the inspection of the workpiece contoured surface to be performed.

  19. UW-Stout REU Dr. Alexander

    E-Print Network [OSTI]

    Thomas, David D.

    as Senior Staff Scientist at Science Applications International Corporation #12;UW-Stout REU Dr. AlexanderUW-Stout REU Dr. Alexander Basyrov, Dr. Seth Dutter, Dr. Matthew Horak, Dr. Keith Wojciechowski UW-Stout Mathematics REU Complex Analysis Numerical Methods for PDEs Algebraic Geometry Project Geometric Group Theory

  20. INNOVATIVE EDDY CURRENT PROBE FOR MICRO DEFECTS

    SciTech Connect (OSTI)

    Santos, Telmo G.; Vilaca, Pedro; Quintino, Luisa [IDMEC, Av. Rovisco Pais, 1049-001 Lisbon (Portugal); Santos, Jorge dos [GKSS, Max-Planck-Street 1, D-21502 Geesthacht (Germany); Rosado, Luis [IST, UTL, Av. Rovisco Pais, 1049-001 Lisbon (Portugal)

    2010-02-22T23:59:59.000Z

    This paper reports the development of an innovative eddy current (EC) probe, and its application to micro-defects on the root of the Friction Stir Welding (FSW). The new EC probe presents innovative concept issues, allowing 3D induced current in the material, and a lift-off independence. Validation experiments were performed on aluminium alloys processed by FSW. The results clearly show that the new EC probe is able to detect and sizing surface defects about 60 microns depth.

  1. Eddy current inspection tool. [Patent application

    DOE Patents [OSTI]

    Petrini, R.R.; Van Lue, D.F.

    1980-10-29T23:59:59.000Z

    A miniaturized inspection tool, for testing and inspection of metal objects in locations with difficult accessibility, which comprises eddy current sensing equipment with a probe coil, and associated coaxial coil cable, oil energizing means, and circuit means responsive to impedance changes in the coil as effected by induced eddy currents in a test object to produce a data output signal proportional to such changes. The coil and cable are slideably received in the utility channel of the flexible insertion tube of a fiberoptic scope. The scope is provided with light transmitting and receiving fiberoptics for viewing through the flexible tube, and articulation means for articulating the distal end of the tube and permitting close control of coil placement relative to a test object. The eddy current sensing equipment includes a tone generator for generating audible signals responsive to the data output signal. In one selected mode of operation, the tone generator responsive to the output signal above a selected level generates a constant single frequency tone for signalling detection of a discontinuity and, in a second selected mode, generates a tone whose frequency is proportional to the difference between the output signal and a predetermined selected threshold level.

  2. Adaptive finite element method for eddy current problems

    E-Print Network [OSTI]

    Adaptive finite element method for eddy current problems. In this chapter we shall discuss Maxwell's equations at very low frequencies. We also refer to [bo98...

  3. Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Advanced Engine Combustion Research Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies...

  4. automated eddy current: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    model-assisted POD study. Keywords 2 AUTOMATED ANALYSIS OF EDDY CURRENT SIGNALS IN STEAM GENERATOR TUBE INSPECTION CiteSeer Summary: Abstract: Accurate and consistent...

  5. Internship EPA Dr. Rik Reussing

    E-Print Network [OSTI]

    Twente, Universiteit

    Internship EPA Dr. Rik Reussing Dr. Jörgen Svensson #12;Intro OPTIONS IN THE FIFTH SEMESTER - EXCHANGE PROGRAMME (30 EC) - INTERNSHIP (15 EC OR 30 EC) - ELECTIVES in TWENTE (15 EC OR 30 EC) * HTHT-modules * Modules of other programmes (30 EC module International Development, with an internship of 15 EC

  6. A TRANSIENT EDDY CURRENT PROBLEM ON A MOVING DOMAIN. MATHEMATICAL ANALYSIS

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    A TRANSIENT EDDY CURRENT PROBLEM ON A MOVING DOMAIN. MATHEMATICAL ANALYSIS ALFREDO BERM is to introduce and analyze a weak formulation of the transient eddy current problem governing electromagnetic. Electromagnetic forming, transient eddy current problem, axisymmetric problem, degenerate parabolic problem

  7. Numerical solution of transient eddy current problems with input current intensities as boundary data

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    Numerical solution of transient eddy current problems with input current intensities as boundary to solve transient eddy current problems with input current intensities as data, formulated in terms: Eddy current problems, time-dependent electromagnetic problems, input current intensities, finite

  8. MATHEMATICAL AND NUMERICAL ANALYSIS OF A TRANSIENT EDDY CURRENT PROBLEM ARISING FROM

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    MATHEMATICAL AND NUMERICAL ANALYSIS OF A TRANSIENT EDDY CURRENT PROBLEM ARISING FROM transient axisymmetric eddy current problem governing such phenomenon. The resulting problem is degenerate. Electromagnetic forming, finite elements, eddy current, transient electromagnetics, degenerate parabolic problems

  9. Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine...

    Office of Environmental Management (EM)

    Large Eddy Simulation (LES) Applied to LTCDieselHydrogen Engine Combustion Research Large Eddy Simulation (LES) Applied to LTCDieselHydrogen Engine Combustion Research 2009 DOE...

  10. 2012 Conference on Intelligent Data Understanding EddyScan: A Physically Consistent Ocean Eddy Monitoring Application

    E-Print Network [OSTI]

    Minnesota, University of

    the Agulhas Current, which flows along the southeastern coast of Africa and around the tip of South Africa dynamics. In addition to dominating the ocean's kinetic energy, eddies play a significant role. The ocean's kinetic energy is dominated by mesoscale variability: scales of tens to hundreds of kilometers

  11. Prof. Rosemary A. Renaut Dr. Hongbin Guo & Dr. Haewon Nam

    E-Print Network [OSTI]

    Renaut, Rosemary

    2 354 6 798 3 4 @ 3 @ @8 2 3 7 @ 3 798 3 4 A8 0 3 0 8 B 3 7DC 8 Prof. Rosemary A. Renaut Dr. Hongbin

  12. Casimir interaction from magnetically coupled eddy currents

    E-Print Network [OSTI]

    Intravaia, Francesco

    2009-01-01T23:59:59.000Z

    We study the Casimir interaction due to eddy (Foucault) currents in thick metallic plates. The Drude model is used to describe the optical response of the metal at low frequencies. A repulsive force arises from the electromagnetic coupling between chargeless currents filling the metallic half-spaces. We show that these overdamped modes are entirely responsible for the thermal anomalies of the Casimir force between good conductors. It turns out that the applicability of the Nernst heat theorem (third law of thermodynamics) must be reviewed since the ground state of the coupled metal+field system can become highly degenerate at zero temperature.

  13. Eddy current measurement of tube element spacing

    DOE Patents [OSTI]

    Latham, Wayne Meredith (Forest, VA); Hancock, Jimmy Wade (Lynchburg, VA); Grut, Jayne Marie (Madison Heights, VA)

    1998-01-01T23:59:59.000Z

    A method of electromagnetically measuring the distance between adjacent tube elements in a heat exchanger. A cylindrical, high magnetic permeability ferrite slug is placed in the tube adjacent the spacing to be measured. A bobbin or annular coil type probe operated in the absolute mode is inserted into a second tube adjacent the spacing to be measured. From prior calibrations on the response of the eddy current coil, the signals from the coil, when sensing the presence of the ferrite slug, are used to determine the spacing between the tubes.

  14. Characterization of Caribbean Meso-Scale Eddies Jose M. Lopez

    E-Print Network [OSTI]

    Gilbes, Fernando

    Characterization of Caribbean Meso-Scale Eddies Jose M. Lopez Department of Marine Sciences, P-term goal is to improve predictivity of physical, biogeochemical and optical properties of Eastern Caribbean, biological and optical variables across frontal and eddy boundaries in the Eastern Caribbean Sea · To develop

  15. Accelerated profile HMM searches Sean R. Eddy1,

    E-Print Network [OSTI]

    Eddy, Sean

    1 Accelerated profile HMM searches Sean R. Eddy1, 1 HHMI Janelia Farm Research Campus, Ashburn, VA, USA. E-mail: eddys@janelia.hhmi.org Abstract Profile hidden Markov models (profile HMMs search. However, practical use of profile HMM methods has been hindered by the computational expense

  16. Berkeley Emeriti Dr. Marshall Stoller

    E-Print Network [OSTI]

    Alvarez-Cohen, Lisa

    T I M E S Berkeley Emeriti Dr. Marshall Stoller Department of Urology, UC San Francisco "UROLOGY AND THE AGING POPULATION" Saturday, September 13, 2008 The Faculty Club Marshall Stoller, MD heads UC San

  17. Security Policies Dr. Ahmad Almulhem

    E-Print Network [OSTI]

    Almulhem, Ahmad

    Security Policies Dr. Ahmad Almulhem Computer Engineering Department, KFUPM Spring 2008 Ahmad Almulhem - Network Security Engineering - 2008 1 / 51 #12;Security Policies Types of Security Policies Trust Types of Access Control Summary Part I Overview Ahmad Almulhem - Network Security Engineering

  18. Dr. Dave Danielson Assistant Secretary

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    & Renewable Energy U.S. Department of Energy Mr. Bryan Dods Executive & Chief Engineer GE Power & Water Dr. Mark Johnson Director Advanced Manufacturing Office U.S. Department of...

  19. Eddy-Current-Induced Multipole Field Calculations September 29, 2003 1 Eddy-Current-Induced Multipole Field

    E-Print Network [OSTI]

    Kemner, Ken

    Eddy-Current-Induced Multipole Field Calculations September 29, 2003 1 Eddy-Current-Induced Multipole Field Calculations Nicholas S. Sereno, Suk H. Kim 1.0 Abstract Time-varying magnetic fields-current-induced multipole fields from higher multipole magnets (quadrupole, sextupole, etc.). Finally, transient effects

  20. SOURCE SEPARATION TECHNIQUES APPLIED TO THE DETECTION OF SUBSURFACE DEFECTS IN THE EDDY CURRENT NDT

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    SOURCE SEPARATION TECHNIQUES APPLIED TO THE DETECTION OF SUBSURFACE DEFECTS IN THE EDDY CURRENT NDT component analysis, to process the data from the eddy current inspection of riveted lap joints. An eddy methods are proposed for processing such eddy current data by means of both the considered source

  1. Eddy currents in a gradient coil, modeled as circular loops of strips

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    Eddy currents in a gradient coil, modeled as circular loops of strips J.M.B. Kroot, S.J.L. van to induction, eddy currents occur, resulting in a so-called edge-effect. Higher frequencies cause stronger edge by a gradient coil induces eddy currents in the conducting structures. The eddy currents cause perturbations

  2. Physical and chemical signatures of a developing anticyclonic eddy in the Leeuwin Current, eastern Indian Ocean

    E-Print Network [OSTI]

    Feng, Ming

    Physical and chemical signatures of a developing anticyclonic eddy in the Leeuwin Current, eastern 2006 to sample a developing anticyclonic eddy of the Leeuwin Current off Western Australia. The eddy to that of the Leeuwin Current, indicating the water mass in the eddy is mainly derived from the Leeuwin Current

  3. Classical eddy current losses in Soft Magnetic Composites , O. de la Barrire2a

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1 Classical eddy current losses in Soft Magnetic Composites C. Appino1 , O. de la Barrire2a , F. It is known that eddy currents can flow in these granular materials at3 two different scales, that of the single particle (microscopic eddy currents) and that of the specimen4 cross-section (macroscopic eddy

  4. Modeled biogeochemical responses to mesoscale eddies in the South China Sea

    E-Print Network [OSTI]

    Maine, University of

    Modeled biogeochemical responses to mesoscale eddies in the South China Sea Peng Xiu1 and Fei Chai1] Mesoscale eddies are observed each year in the South China Sea (SCS); however, their contributions physicalbiogeochemical model to evaluate the eddy impact. We first track the modeled mesoscale eddies in the SCS

  5. Wind ringing of the ocean in presence of mesoscale eddies P. Klein and G. Lapeyre

    E-Print Network [OSTI]

    Lapeyre, Guillaume

    Wind ringing of the ocean in presence of mesoscale eddies P. Klein and G. Lapeyre Laboratoire de scales related to oceanic mesoscale eddies. Results show that a turbulent eddy field does not affect Oceanography: Physical: Eddies and mesoscale processes; 4572 Oceanography: Physical: Upper ocean processes

  6. BOUNDARY LAYER (BL) THERMAL EDDIES OVER A PINE FOREST FROM CARES 2010

    E-Print Network [OSTI]

    BOUNDARY LAYER (BL) THERMAL EDDIES OVER A PINE FOREST FROM CARES 2010 Gunnar Senum and Stephen are three thermal eddies, about 250 meters wide, in the boundary layer. These thermal eddies are formed from the solar heating of the surface and help to form the boundary layer. The eddy updrafts are transporting

  7. MULTI-DOMAIN INDUSTRIAL BENCHMARKS FOR EDDY CURRENT MODELING: THE COFREND WORKING GROUP

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Conference on Non-Destructive Testing (ECNDT 2010), Moscou : France (2010)" #12;Concerning eddy currents

  8. On the role of mesoscale eddies in the ventilation of Antarctic intermediate water

    E-Print Network [OSTI]

    Fischlin, Andreas

    On the role of mesoscale eddies in the ventilation of Antarctic intermediate water Zouhair Lachkar Mesoscale eddies CFC-11 Ventilation Southern Ocean a b s t r a c t The spatial distribution of Antarctic and ventilation are substantially affected by mesoscale eddies. To diagnose the role of eddies, we made global CFC

  9. Seasonal Mesoscale and Submesoscale Eddy Variability along the North Pacific Subtropical Countercurrent

    E-Print Network [OSTI]

    Qiu, Bo

    Seasonal Mesoscale and Submesoscale Eddy Variability along the North Pacific Subtropical abundant in mesoscale eddies, but also exhibits prominent submesoscale eddy features. Output from a 1 the seasonal STCC variability in the mesoscale versus submesoscale ranges. Resolving the eddy scales of .150 km

  10. Red Harvester Ants

    E-Print Network [OSTI]

    Drees, Bastiaan M.

    2006-04-24T23:59:59.000Z

    Red harvester ants are one of the more noticeable and larger ants in open areas in Texas. However, their populations are declining and this has affected an animal that preys upon the ants--the threatened Texas horned lizard....

  11. Eddy heat fluxes at Drake Passage due to mesoscale motions

    E-Print Network [OSTI]

    Rojas Recabal, Ricardo Luis

    1982-01-01T23:59:59.000Z

    EDDY HEAT FLUKES AT DRAKE PASSAGE DUE TO MESOSCALE MOTIONS A Thesis by RICARDO LUIS ROJAS RECABAL Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May... 1982 Major Subject: Oceanography EDDY HEAT FLUXES AT DRAKE PASSAGE DUE TO MESOSCALE NOTIONS A Thesis by RICARDO LUIS ROJAS RECABAL Approved as to style and content by: was )W-~ Member em er May 1982 ABSTRACT Eddy Heat Fluxes at Drake Passage...

  12. Name Affiliation Country PI Prof. Dr. Gottfried Mann AIP Germany

    E-Print Network [OSTI]

    Name Affiliation Country PI Prof. Dr. Gottfried Mann AIP Germany core members (project manager) Dr Sweden Germany ordinary members Frank Breitling Eoin Carley Dr. Harry Enke Dr. Norbert Jakowski Dr Germany Ireland Germany Germany UK Ireland Germany UK Ireland associated memb. Prof. Dr. John Brown Dr

  13. Zone Clinical Department Head Dr. G. MacQueen

    E-Print Network [OSTI]

    Calgary, University of

    &A Acute Care Serv & Children's Day Treatment Program Dr. Waheed ACH Mood & Anxiety Clinic Dr. Rodway Young Rehabilitation Vacant FMC Mental Health Day Treatment Dr. Oluwadairo Shared Mental Health Care Dr. Oakander FMC Addictions & Claresholm Dr. Colohan Claresholm Care Centre Dr. Colohan Addictions Network Dr. Lim Addiction

  14. Eddy-current-damped microelectromechanical switch

    DOE Patents [OSTI]

    Christenson, Todd R. (Albuquerque, NM); Polosky, Marc A. (Tijeras, NM)

    2009-12-15T23:59:59.000Z

    A microelectromechanical (MEM) device is disclosed that includes a shuttle suspended for movement above a substrate. A plurality of permanent magnets in the shuttle of the MEM device interact with a metal plate which forms the substrate or a metal portion thereof to provide an eddy-current damping of the shuttle, thereby making the shuttle responsive to changes in acceleration or velocity of the MEM device. Alternately, the permanent magnets can be located in the substrate, and the metal portion can form the shuttle. An electrical switch closure in the MEM device can occur in response to a predetermined acceleration-time event. The MEM device, which can be fabricated either by micromachining or LIGA, can be used for sensing an acceleration or deceleration event (e.g. in automotive applications such as airbag deployment or seat belt retraction).

  15. Eddy-current-damped microelectromechanical switch

    DOE Patents [OSTI]

    Christenson, Todd R. (Albuquerque, NM); Polosky, Marc A. (Tijeras, NM)

    2007-10-30T23:59:59.000Z

    A microelectromechanical (MEM) device is disclosed that includes a shuttle suspended for movement above a substrate. A plurality of permanent magnets in the shuttle of the MEM device interact with a metal plate which forms the substrate or a metal portion thereof to provide an eddy-current damping of the shuttle, thereby making the shuttle responsive to changes in acceleration or velocity of the MEM device. Alternately, the permanent magnets can be located in the substrate, and the metal portion can form the shuttle. An electrical switch closure in the MEM device can occur in response to a predetermined acceleration-time event. The MEM device, which can be fabricated either by micromachining or LIGA, can be used for sensing an acceleration or deceleration event (e.g. in automotive applications such as airbag deployment or seat belt retraction).

  16. An eddy closure for potential vorticity

    SciTech Connect (OSTI)

    Ringler, Todd D [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The Gent-McWilliams (GM) parameterization is extended to include a direct influence in the momentum equation. The extension is carried out in two stages; an analysis of the inviscid system is followed by an analysis of the viscous system. In the inviscid analysis the momentum equation is modified such that potential vorticity is conserved along particle trajectories following a transport velocity that includes the Bolus velocity in a manner exactly analogous to the continuity and tracer equations. In addition (and in contrast to traditional GM closures), the new formulation of the inviscid momentum equation results in a conservative exchange between potential and kinetic forms of energy. The inviscid form of the eddy closure conserves total energy to within an error proportional to the time derivative of the Bolus velocity. The hypothesis that the viscous term in the momentum equation should give rise to potential vorticity being diffused along isopycnals in a manner analogous to other tracers is examined in detail. While the form of the momentum closure that follows from a strict adherence to this hypothesis is not immediately interpretable within the constructs of traditional momentum closures, three approximations to this hypothesis results in a form of dissipation that is consistent with traditional Laplacian diffusion. The first two approximations are that relative vorticity, not potential vorticity, is diffused along isopyncals and that the flow is in approximate geostrophic balance. An additional approximation to the Jacobian term is required when the dissipation coefficient varies in space. More importantly, the critique of this hypothesis results in the conclusion that the viscosity parameter in the momentum equation should be identical to the tradition GM closure parameter {Kappa}. Overall, we deem the viscous form of the eddy closure for potential vorticity as a viable closure for use in ocean circulation models.

  17. Eddy sensors for small diameter stainless steel tubes.

    SciTech Connect (OSTI)

    Skinner, Jack L.; Morales, Alfredo Martin; Grant, J. Brian; Korellis, Henry James; LaFord, Marianne Elizabeth; Van Blarigan, Benjamin; Andersen, Lisa E.

    2011-08-01T23:59:59.000Z

    The goal of this project was to develop non-destructive, minimally disruptive eddy sensors to inspect small diameter stainless steel metal tubes. Modifications to Sandia's Emphasis/EIGER code allowed for the modeling of eddy current bobbin sensors near or around 1/8-inch outer diameter stainless steel tubing. Modeling results indicated that an eddy sensor based on a single axial coil could effectively detect changes in the inner diameter of a stainless steel tubing. Based on the modeling results, sensor coils capable of detecting small changes in the inner diameter of a stainless steel tube were designed, built and tested. The observed sensor response agreed with the results of the modeling and with eddy sensor theory. A separate limited distribution SAND report is being issued demonstrating the application of this sensor.

  18. Mesoscale Eddies in the Gulf of Alaska: Observations and Implications

    E-Print Network [OSTI]

    Rovegno, Peter

    2012-01-01T23:59:59.000Z

    Chao, Y. 2012. Modeling the mesoscale eddy field in the GulfShriver, J. F. 2001. Mesoscale variability in the boundaryof the Gulf of Alaska mesoscale circulation. Progress in

  19. Eddy-mean flow interactions in western boundary current jets

    E-Print Network [OSTI]

    Waterman, Stephanie N

    2009-01-01T23:59:59.000Z

    This thesis examines the nature of eddy-mean flow interactions in western boundary current jets and recirculation gyre dynamics from both theoretical and observational perspectives. It includes theoretical studies of ...

  20. An investigation of the vertical and temporal distributions of the eddy heat-diffusion coefficient near the earth's surface under fair-weather conditions

    E-Print Network [OSTI]

    Wong, Eugene You June

    1965-01-01T23:59:59.000Z

    facilities avail- able at the Data Processing Center (DPC), Texas A&M Univer- sity, this investigation would not have been temporally possible. Deep appreciation goes to all DPC personnel for their tireless assistance. Thanks must go to Mr. Lundin, my...-Weather Conditions (January 1965) Eugene Y J, Wong, B. S, , Texas A&M University Directed by: Dr. Kenneth C. Brundidge A numerical scheme was devised to solve the Tavlor heat-diffusion equation for values of the eddy heat- diffusion coefficient, K, using a...

  1. Analysis of azimuthal mode dynamics of mesoscale eddies

    E-Print Network [OSTI]

    McCalpin, John David

    1984-01-01T23:59:59.000Z

    ANALYSIS OF AZIMUTHAL MODE DYNAMICS OF MESOSCALE EDDIES A Thesis by UOHN DAVID MCCALPIN Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1984... Major Subject: Oceanography ANALYSIS OF AZIMUTHAL MODE DYNAMICS OF MESOSCALE EDDIES A Thesis by JOHN DAVID MCCALPIN Approved as to style and content by: rew . as ano (Chairman of Committee) o ert . ei (Member) uy . rancesc &ni (Member) Robert...

  2. Interspecific association and dispersion patterns of the red imported fire ant, aphids and some predaceous insects in a cotton agroecosystem

    E-Print Network [OSTI]

    Reilly, Joseph John

    1982-01-01T23:59:59.000Z

    and Some Predaceous Insects in a Cotton Agroecosystem. (August 1982) Joseph John Rei 1 ly, B. S. , Vi llanova University Chairman of Advisory Committee: Dr. Winfield Sterling Interspecific association between the red imported f1re ant, ~S ieno sis... and aphids. ACKNOWLEDGEMENTS I wish to dedicate this thesis to my mother, Rose Ellen Rei lly, whose encouragement and support have made this study possible. I would like to extend my sincere gratitude to my major professor, Dr. Winfield Sterling for his...

  3. 25 Year Medallion Dr Avery Andrews

    E-Print Network [OSTI]

    Botea, Adi

    Bessell Mr Christopher Blake Mr Gabriel Bloxham Professor Philip Board Mr John Boyd Dr Valerie Braithwaite Hogan Mrs Anna Hon Mr Peter Horsburgh Professor Geoffrey Hope Dr Algy Howe Mr Gary Hovey Professor Terry

  4. Team Leader: Dr. Ellen Douglas

    E-Print Network [OSTI]

    Douglas, Ellen M.

    Team Leader: Dr. Ellen Douglas Assistant Professor, Hydrology Current Team Members: Steve Kichefski, BS EEOS (graduated June 2008) Team Hydro was established in 2008 and is made up of a diverse group of Environmental, Earth and Ocean Sciences (EEOS). The mission of Team Hydro is to promote a sense of community

  5. Dr. Paulna Korskov IEA Secretariat

    E-Print Network [OSTI]

    Huang, Jianyu

    Dr. Paulna Korskov IEA Secretariat p.korsnakova@iea.nl www.iea.nl International Association, and interpret online information. PIRLS and ePIRLS are projects of IEA (International Association for the Evaluation of Educational Achievement). Headquartered in Amsterdam, IEA has been conducting international

  6. Statement of Dr. Edmund Synakowski

    E-Print Network [OSTI]

    1 Statement of Dr. Edmund Synakowski Associate Director for Fusion Energy Sciences Office of Science U.S. Department of Energy Before the Subcommittee on Energy and Environment Committee on Science Energy Sciences program in the Department of Energy's (DOE's) Office of Science (SC). I have been

  7. Dr. Markus Schmidmeier 3147 Kingswood Terrace

    E-Print Network [OSTI]

    Schmidmeier, Markus

    Dr. Markus Schmidmeier 3147 Kingswood Terrace Boca Raton, Florida 33431 561 Zimmermann. · Diploma in mathematics at Munich University (LMU), 1983-1987 and 1988-1991, advisor: Prof. Dr. Wolfgang Zimmermann. · M.Sc. studies at Warwick University, England, 1987-1988, Advisor: Dr. Charu

  8. Dr. Markus Schmidmeier 3147 Kingswood Terrace

    E-Print Network [OSTI]

    Schmidmeier, Markus

    Dr. Markus Schmidmeier 3147 Kingswood Terrace Boca Raton, Florida 33431 561¨at,", advisor: Prof. Dr. Wolfgang Zimmermann. · Diploma in mathematics at Munich University (LMU), 1983-1987 and 1988-1991, advisor: Prof. Dr. Wolfgang Zimmermann. · M.Sc. studies at Warwick University, England, 1987

  9. Journal of Nondestructive Evaluation, Vol. 23, No. 3, September 2004 ( C 2004) Eddy Current Assessment of Near-Surface Residual

    E-Print Network [OSTI]

    Nagy, Peter B.

    Journal of Nondestructive Evaluation, Vol. 23, No. 3, September 2004 ( C 2004) Eddy Current in eddy current conductivity at increasing inspection frequencies, which can be exploited components, lend themselves easily for eddy current residual stress assessment lies in their favorable

  10. Red Raider Orientation COLLEGE DISMISSAL

    E-Print Network [OSTI]

    Rock, Chris

    Communications, etc.) #12;#12;RED RAIDER ORIENTATION Business Administration Accounting Energy Commerce Finance General Business International Business Management Management Information Systems Marketing Visual &Performing Arts Art Dance VPA General Studies Music Theatre Arts #12;RED RAIDER ORIENTATION

  11. Red Rice Research and Control.

    E-Print Network [OSTI]

    Baker, John B.; Baldwin, Ford L.; Bourgeois, W.J.; Cox, Clodis H.; Craigmiles, Julian P.; Dishman, William D.; Eastin, E. Ford; Helpert, Charles W.; Hill, Lewis C.; Huey, Bobby A.; Klosterboer, Arlen D.; Sonnier, Earl A.

    1980-01-01T23:59:59.000Z

    ...................................... 10 E. A. Sonnier RED RICE CONTROL IN ALTERNATE CROPS ................................ 16 F. L. Baldwin ..# RED RICE CONTROL ..................................................lg B. A. Huey and F. L. Baldwin RED RICE HERBICIDE SCREENING TESTS...-to-date information available on a subject of major concern to rice producers. E. F. Eastin, editor The Texas Agricultural Experiment Station Beaumont INTRODUCTION J. P. Craigmiles The purpose of t h i s red r i c e symposium i s straightforward and simple...

  12. METAMODELS AS INPUT OF AN OPTIMIZATION ALGORITHM FOR SOLVING AN INVERSE EDDY CURRENT TESTING PROBLEM

    E-Print Network [OSTI]

    Boyer, Edmond

    METAMODELS AS INPUT OF AN OPTIMIZATION ALGORITHM FOR SOLVING AN INVERSE EDDY CURRENT TESTING-Curie, 91192 Gif-sur-Yvette, France Abstract A new mean of solution of eddy current testing (ECT) inverse

  13. Mixed Layer Lateral Eddy Fluxes Mediated by Air-Sea Interaction

    E-Print Network [OSTI]

    Shuckburgh, Emily

    The modulation of airsea heat fluxes by geostrophic eddies due to the stirring of temperature at the sea surface is discussed and quantified. It is argued that the damping of eddy temperature variance by such airsea ...

  14. Rationalizing the Spatial Distribution of Mesoscale Eddy Diffusivity in Terms of Mixing Length Theory

    E-Print Network [OSTI]

    Bates, Michael

    Observations and theory suggest that lateral mixing by mesoscale ocean eddies only reaches its maximum potential at steering levels, surfaces at which the propagation speed of eddies approaches that of the mean flow. Away ...

  15. Energy pathways and structures of oceanic eddies from the ECCO2 State Estimate and Simplified Models

    E-Print Network [OSTI]

    Chen, Ru, Ph. D. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    Studying oceanic eddies is important for understanding and predicting ocean circulation and climate variability. The central focus of this dissertation is the energy exchange between eddies and mean ow and banded structures ...

  16. Large-eddy Simulation of the Nighttime Stable Atmospheric Boundary Layer

    E-Print Network [OSTI]

    Zhou, Bowen

    2012-01-01T23:59:59.000Z

    eddy Simulation of Wind-turbine Wakes: Evaluation of Turbineperformed LES of wind-turbine wakes in neutrally stratified

  17. Large-Eddy Simulation of Wind-Plant Aerodynamics: Preprint

    SciTech Connect (OSTI)

    Churchfield, M. J.; Lee, S.; Moriarty, P. J.; Martinez, L. A.; Leonardi, S.; Vijayakumar, G.; Brasseur, J. G.

    2012-01-01T23:59:59.000Z

    In this work, we present results of a large-eddy simulation of the 48 multi-megawatt turbines composing the Lillgrund wind plant. Turbulent inflow wind is created by performing an atmospheric boundary layer precursor simulation and turbines are modeled using a rotating, variable-speed actuator line representation. The motivation for this work is that few others have done wind plant large-eddy simulations with a substantial number of turbines, and the methods for carrying out the simulations are varied. We wish to draw upon the strengths of the existing simulations and our growing atmospheric large-eddy simulation capability to create a sound methodology for performing this type of simulation. We have used the OpenFOAM CFD toolbox to create our solver.

  18. Eddy Current Testing for Detecting Small Defects in Thin Films

    SciTech Connect (OSTI)

    Obeid, Simon; Tranjan, Farid M. [Electrical and Computer Engineering Department, UNCC (United States); Dogaru, Teodor [Albany Instruments, 426-O Barton Creek, Charlotte, NC 28262 (United States)

    2007-03-21T23:59:59.000Z

    Presented here is a technique of using Eddy Current based Giant Magneto-Resistance sensor (GMR) to detect surface and sub-layered minute defects in thin films. For surface crack detection, a measurement was performed on a copper metallization of 5-10 microns thick. It was done by scanning the GMR sensor on the surface of the wafer that had two scratches of 0.2 mm, and 2.5 mm in length respectively. In another experiment, metal coatings were deposited over the layers containing five defects with known lengths such that the defects were invisible from the surface. The limit of detection (resolution), in terms of defect size, of the GMR high-resolution Eddy Current probe was studied using this sample. Applications of Eddy Current testing include detecting defects in thin film metallic layers, and quality control of metallization layers on silicon wafers for integrated circuits manufacturing.

  19. Modeling multifrequency eddy current sensor interactions during vertical Bridgman growth of semiconductors

    E-Print Network [OSTI]

    Wadley, Haydn

    Modeling multifrequency eddy current sensor interactions during vertical Bridgman growth methods have been used to analyze the responses of two ``absolute'' and ``differential'' eddy current conductivity ratio increases. Of the materials studied, GaAs is found best suited for eddy current sensing

  20. An H-Formulation for the Three-Dimensional Eddy Current Problem in Laminated Structures

    E-Print Network [OSTI]

    Zheng, Weiying

    An H- Formulation for the Three-Dimensional Eddy Current Problem in Laminated Structures Peijun Li-dimensional eddy currents in grain-oriented (GO) silicon steel laminations since the coating film is only several to the smallest scale can be up to 106. In this paper, we study an H- formulation for the nonlinear eddy current

  1. EDDY CURRENT TESTING OF FERROMAGNETIC MATERIALS: MODELLING OF MULTIPLE FLAWS IN A

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    EDDY CURRENT TESTING OF FERROMAGNETIC MATERIALS: MODELLING OF MULTIPLE FLAWS IN A PLANAR STRATIFIED Universit Paris Sud 11), 3, rue Joliot-Curie, 91192 Gif-sur- Yvette, France ! "#$%&'(%! Eddy current testing. Lambert, H. Voillaume and N. Dominguez, "A 3D model for eddy current inspection in aeronautics

  2. AN ADAPTIVE FINITE ELEMENT METHOD FOR THE EDDY CURRENT MODEL WITH CIRCUIT/FIELD COUPLINGS

    E-Print Network [OSTI]

    AN ADAPTIVE FINITE ELEMENT METHOD FOR THE EDDY CURRENT MODEL WITH CIRCUIT/FIELD COUPLINGS JUNQING for solving the eddy current model with voltage excitations for complicated three dimensional structures of the proposed method. Key words. Eddy current, circuit/field coupling, adaptivity, a posteriori error analysis

  3. IEEE TRANS. MAGN., SUBMITTED 1 3D Eddy-Current Imaging of Metal Tubes by

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    IEEE TRANS. MAGN., SUBMITTED 1 3D Eddy-Current Imaging of Metal Tubes by Gradient-Based, Controlled, and Oliver Dorn Abstract--Eddy-current non-destructive testing is widely used to detect defects within-developed binary-specialized method. Index Terms--eddy-current non-destructive testing, impedance variations, level

  4. A generalized likelihood ratio technique for automated analysis of bobbin coil eddy current dataq

    E-Print Network [OSTI]

    Polikar, Robi

    A generalized likelihood ratio technique for automated analysis of bobbin coil eddy current dataq M signals that are commonly found in bobbin coil eddy current data. The performance of the proposed for automated processing and classication of eddy current data. q 2002 Elsevier Science Ltd. All rights

  5. EUROPEAN CONFERENCE FOR AEROSPACE SCIENCES Study on the eddy current damping of the spin dynamics of

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    4TH EUROPEAN CONFERENCE FOR AEROSPACE SCIENCES Study on the eddy current damping of the spin consideration in this article, are impacted by torques generated by eddy currents as the conducting non, the permanent magnetic field from the magnetosphere generates eddy current in the spinning, conducting body

  6. 2258 IEEE TRANSACTIONS ON MAGNETICS, VOL. 33, NO. 3, MAY 1997 Pulsed Eddy-Current Response

    E-Print Network [OSTI]

    Bowler, John R.

    2258 IEEE TRANSACTIONS ON MAGNETICS, VOL. 33, NO. 3, MAY 1997 Pulsed Eddy-Current Response to a Conducting Half-Space John Bowler, Member, IEEE, and Marcus Johnson Abstract-- Eddy-current nondestructive agreement between theory and experiment. Index Terms--Eddy current, half-space, pulsed, transient. I

  7. A new database generation method combining maximin method and kriging prediction for eddy-current testing

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    A new database generation method combining maximin method and kriging prediction for eddy-current@evt.bme.hu Abstract: The accurate numerical simulation of the eddy- current testing (ECT) experiments usually requires-based adaptive methodology which yields to databases optimized to the given problem. Keywords: eddy-current

  8. AN EFFICIENT EDDY CURRENT MODEL FOR NONLINEAR MAXWELL EQUATIONS WITH LAMINATED CONDUCTORS

    E-Print Network [OSTI]

    Zheng, Weiying

    AN EFFICIENT EDDY CURRENT MODEL FOR NONLINEAR MAXWELL EQUATIONS WITH LAMINATED CONDUCTORS XUE JIANG AND WEIYING ZHENG Abstract. In this paper, we propose a new eddy current model for the nonlinear Maxwell equations with laminated conductors. Direct simulation of three-dimensional (3D) eddy currents in grain

  9. Low-frequency perturbation theory in eddy-current non-destructive evaluation

    E-Print Network [OSTI]

    Bowler, John R.

    Low-frequency perturbation theory in eddy-current non-destructive evaluation N. Harfield,a) Y series solutions for the impedance change in an eddy-current test probe due to closed cracks in a non structures in, for example, the nuclear power and aero- space industries. Eddy-current inspection methods

  10. NUMERICAL TREATMENT OF REALISTIC BOUNDARY CONDITIONS FOR THE EDDY CURRENT PROBLEM IN AN

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    NUMERICAL TREATMENT OF REALISTIC BOUNDARY CONDITIONS FOR THE EDDY CURRENT PROBLEM IN AN ELECTRODE methods to solve the eddy current problem in a conducting bounded domain. In particular, we consider-frequency harmonic Maxwell equations, eddy current problems, finite element computational electromagnetism, Lagrange

  11. MATHEMATICAL AND NUMERICAL ANALYSIS OF A TRANSIENT EDDY CURRENT AXISYMMETRIC PROBLEM

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    MATHEMATICAL AND NUMERICAL ANALYSIS OF A TRANSIENT EDDY CURRENT AXISYMMETRIC PROBLEM INVOLVING to solve a tran- sient eddy current axisymmetric problem. We consider the case of a coil supplied with a source current generating a magnetic field which induces eddy currents in a nearby workpiece

  12. Observation of tearing mode deceleration and locking due to eddy currents induced in a conducting shell

    E-Print Network [OSTI]

    Fitzpatrick, Richard

    Observation of tearing mode deceleration and locking due to eddy currents induced in a conducting eddy currents induced by the rotating mode in the conducting shell surrounding the plasma. According to the amplitude of the mode.47 According to this theory, eddy currents induced in the conducting shell

  13. Singularities of eddy current problems Martin Costabel, Monique Dauge, Serge Nicaise

    E-Print Network [OSTI]

    Singularities of eddy current problems Martin Costabel, Monique Dauge, Serge Nicaise May 13, 2003 Abstract We consider the time-harmonic eddy current problem in its electric formulation where the conductor60. 1 Maxwell equations and the eddy current limit Let us consider the model case of an homogeneous

  14. Eddy currents in a gradient coil, modelled as circular loops of strips

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    Eddy currents in a gradient coil, modelled as circular loops of strips J.M.B. Kroot, S.J.L. van. Due to induction eddy currents occur which lead to the so-called edge-effect. The edge- effect depends the gradient coils themselves. Eddy currents occur, causing perturbations on the expected gradient field

  15. Anisotropic grain noise in eddy current inspection of noncubic polycrystalline metals

    E-Print Network [OSTI]

    Nagy, Peter B.

    Anisotropic grain noise in eddy current inspection of noncubic polycrystalline metals Mark Blodgett of microstructural noise. In eddy current inspection of noncubic crystallographic classes of polycrystalline metals the electrical grain noise is clearly detrimental in eddy current nondestructive testing for small flaws, it can

  16. PROOF COPY 018405PHP Observation of tearing mode deceleration and locking due to eddy currents

    E-Print Network [OSTI]

    Fitzpatrick, Richard

    to eddy currents induced in a conducting shell B. E. Chapman Department of Physics, University 6, 3878 1999 in which a braking torque originates from eddy currents induced by the rotating mode, eddy currents induced in the conducting shell surrounding the plasma exert a braking torque

  17. AN E-BASED MIXED FORMULATION FOR A TIME-DEPENDENT EDDY CURRENT PROBLEM

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    AN E-BASED MIXED FORMULATION FOR A TIME-DEPENDENT EDDY CURRENT PROBLEM RAMIRO ACEVEDO, SALIM-quasistatic submodel usually called eddy current problem; see for instance [9, Chapter 8]. From the mathematical point this harmonic behavior, leading to the so-called time-harmonic eddy current problem. However, even in the case

  18. Fast Solver for Large Scale Eddy Current Non-Destructive Evaluation Problems

    E-Print Network [OSTI]

    Fast Solver for Large Scale Eddy Current Non-Destructive Evaluation Problems Naiguang Lei Advisor: Lalita Udpa Thursday, July 31st, 2014 9:00-11:00am, EB2219 Abstract Eddy current testing plays a very, an alternating magnetic field source generates induced currents, called eddy currents, in an electrically

  19. Eddy current coil interaction with a right-angled conductive wedge

    E-Print Network [OSTI]

    Bowler, John R.

    Eddy current coil interaction with a right-angled conductive wedge BY T. P. THEODOULIDIS 1 AND J. R: eddy current; conductive wedge; coil impedance 1. Introduction The quasi-static electromagnetic field whose axis is normal to one of the wedge faces. The problem has applications in eddy current non

  20. Calculation of eddy currents in moving structures by a sliding mesh-nite element method

    E-Print Network [OSTI]

    Buffa, Annalisa

    Calculation of eddy currents in moving structures by a sliding mesh- nite element method A. Bu of eddy currents in non-stationary structures. Both 2D and 3D models are considered. The approximation. An implicit Euler scheme is used to discretize in time. Key words { eddy currents, nite element approxima

  1. Time domain half-space dyadic Green's functions for eddy-current calculations

    E-Print Network [OSTI]

    Bowler, John R.

    Time domain half-space dyadic Green's functions for eddy-current calculations J. R. Bowlera) Centre American Institute of Physics. S0021-8979 99 08422-4 I. TIME DOMAIN INTERACTION The calculation of eddy-current-domain eddy-current scattering problems for cases in which a scat- terer is embedded in an otherwise

  2. Analysis of eddy currents in a gradient coil J.M.B. Kroot

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    Analysis of eddy currents in a gradient coil J.M.B. Kroot Eindhoven University of Technology P in the tangential direction as well, due to eddy currents induced by other coils. In order to take the dependence, and the frequency is low enough to allow for a quasistatic approximation. Due to induction eddy currents occur

  3. Analysis of eddy currents in a gradient coil J.M.B. Kroot

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    Analysis of eddy currents in a gradient coil J.M.B. Kroot Eindhoven University of Technology P in the tangential direction as well, due to eddy currents induced by other coils. In order to take the dependence, and the frequency is low enough to allow for a quasi-static approximation. Due to induction eddy currents occur

  4. Analytical Model of Magnet Eddy-Current Volume Losses in Multi-phase PM Machines

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Analytical Model of Magnet Eddy-Current Volume Losses in Multi-phase PM Machines with Concentrated, 94000 Crteil France Abstract--this paper studies magnet eddy-current losses in permanent magnet (PM calculations. Keywords--Traction, Concentrated Winding, Eddy- Current, Volume Magnet Losses, Multiphase Machine

  5. Angular approach combined to mechanical model for tool breakage detection by eddy current sensors

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1 Angular approach combined to mechanical model for tool breakage detection by eddy current sensors solution is proposed for the estimate of cutting force using eddy current sensors implemented close eccentricity obtained during the machining from the eddy current sensors signals. Efficiency and reliability

  6. Numerical analysis of electric field formulations of the eddy current model

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    Numerical analysis of electric field formulations of the eddy current model Alfredo Berm´udez1 methods for the numeri- cal solution of the eddy current problem in a bounded conducting domain crossed): 78M10, 65N30 Key words Low-frequency harmonic Maxwell equations, eddy currents, finite elements

  7. An eddy current problem related to electromagnetic Alfredo Bermudez, Rafael Mu~noz, Pilar Salgado

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    An eddy current problem related to electromagnetic forming Alfredo Berm´udez, Rafael Mu~noz, Pilar is to analyze a numerical method to solve a transient axisymmetric eddy current problem arising from currents in the workpiece. The magnetic field, together with the eddy currents, originate the Lorentz

  8. NDT&E International 40 (2007) 405418 High-frequency eddy current conductivity spectroscopy for residual

    E-Print Network [OSTI]

    Nagy, Peter B.

    2007-01-01T23:59:59.000Z

    NDT&E International 40 (2007) 405418 High-frequency eddy current conductivity spectroscopy Available online 11 February 2007 Abstract Recent research results indicated that eddy current conductivity-conductivity engine alloys the eddy current penetration depth could not be forced below 0.2 mm without expanding

  9. AN ADAPTIVE FINITE ELEMENT METHOD FOR THE H -FORMULATION OF TIME-DEPENDENT EDDY CURRENT

    E-Print Network [OSTI]

    AN ADAPTIVE FINITE ELEMENT METHOD FOR THE H - FORMULATION OF TIME-DEPENDENT EDDY CURRENT PROBLEMS, eddy current problem, adaptive finite element method, mul- tiply connected conductor, Team Workshop Problem 7 AMS subject classifications. 65M60, 65M50, 78A25 1. Introduction. Eddy currents appear in almost

  10. Eddy-current interaction with an ideal crack. II. The inverse problem John FL Bowler

    E-Print Network [OSTI]

    Bowler, John R.

    Eddy-current interaction with an ideal crack. II. The inverse problem John FL Bowler The University 1994) Eddy-current inversion is the process whereby the geometry of a flaw in a metal is derived from eddy-current probe impedance measurements. The approach is based on an optimization scheme that seeks

  11. STABILIZATION OF KINK INSTABILITIES BY EDDY CURRENTS IN A SEGMENTED WALL AND

    E-Print Network [OSTI]

    Mauel, Michael E.

    STABILIZATION OF KINK INSTABILITIES BY EDDY CURRENTS IN A SEGMENTED WALL AND COMPARISON WITH IDEAL and measured equi- librium wall eddy currents. The stability analysis of these equilibria predicts patterns of instability induced eddy currents for a model wall that is continuous and perfectly conducting

  12. Near-Surface Eddy Heat and Momentum Fluxes in the Antarctic Circumpolar Current in Drake Passage

    E-Print Network [OSTI]

    Sprintall, Janet

    Near-Surface Eddy Heat and Momentum Fluxes in the Antarctic Circumpolar Current in Drake Passage Antarctic Circumpolar Current (ACC) momentum balance. The observations span 7 yr and are compared to eddy Current (ACC) pathway is marked by exceptionally high mesoscale eddy activity (e.g., Stammer 1998; Hughes

  13. Simplified High-Accuracy Calculation of Eddy-Current Losses in Round-Wire Windings

    E-Print Network [OSTI]

    Simplified High-Accuracy Calculation of Eddy-Current Losses in Round-Wire Windings Xi Nan C. R the IEEE. #12;Simplified High-Accuracy Calculation of Eddy-Current Loss in Round-Wire Windings Xi Nan-- It has recently been shown that the most commonly used methods for calculating high-frequency eddy-current

  14. Numerical solution of eddy current problems in bounded domains using realistic boundary

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    Numerical solution of eddy current problems in bounded domains using realistic boundary conditions-called eddy currents. The problem is formulated in terms of the magnetic field. This formulation in a metallurgical arc furnace. Key words: low-frequency harmonic Maxwell equations, eddy current problems, finite

  15. 558: Calculation of Eddy Currents in the ETE Spherical Torus G.O. Ludwig

    E-Print Network [OSTI]

    558: Calculation of Eddy Currents in the ETE Spherical Torus G.O. Ludwig Instituto Nacional de model based on the Green's function method. The distribution of eddy currents is calculated using a thin well with values of the eddy currents measured in ETE. INTRODUCTION This paper presents a magnetostatic

  16. Numerical method for calculating the apparent eddy current conductivity loss on randomly rough surfaces

    E-Print Network [OSTI]

    Nagy, Peter B.

    Numerical method for calculating the apparent eddy current conductivity loss on randomly rough Because of their frequency-dependent penetration depth, eddy current measurements are capable of mapping of eddy current conductivity, thereby decreasing the accuracy of the measurements, especially in thermally

  17. Theory of thin-skin eddy-current interaction with surface cracks N. Harfielda)

    E-Print Network [OSTI]

    Bowler, John R.

    Theory of thin-skin eddy-current interaction with surface cracks N. Harfielda) and J. R. Bowler; accepted for publication 14 July 1997 Eddy-current non-destructive evaluation is commonly performed of a typical crack. A thin-skin analysis of eddy currents is presented in which the electromagnetic fields

  18. Mathematical and numerical analysis of a transient non-linear axisymmetric eddy current model

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    Mathematical and numerical analysis of a transient non-linear axisymmetric eddy current model the theoretically predicted behavior of the method, are reported. Keywords transient eddy current · axisymmetric is the accurate computation of power losses in the ferromagnetic components of the core due to hysteresis and eddy-current

  19. Theory of eddy current inversion Stephen:J. Nortona) and John FL Bowler

    E-Print Network [OSTI]

    Bowler, John R.

    Theory of eddy current inversion Stephen:J. Nortona) and John FL Bowler University of Surrey) The inverse eddy current problem can be described as the task of reconstructing an unknown distribution of electrical conductivity from eddy-current probe impedance measurements recorded as a function of probe

  20. Eddy-current interaction with an ideal crack. I. The forward problem J. R. Bowler

    E-Print Network [OSTI]

    Bowler, John R.

    Eddy-current interaction with an ideal crack. I. The forward problem J. R. Bowler The University February 1994) The impedance of an eddy-current probe changes when the current it induces in an electrical to introduce idealizations about the nature of the flaw. Eddy-current interaction is considered with an ideal

  1. IEEE TRANSACTIONS ON MAGNETICS, VOL. 31, NO. 3, MAY 1995 Geometrical optimizationof sensors for eddy currents

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    for eddy currents Non Destructive Testing and Evaluation FrkddricTHOLLON-Nod BURAIS CEGELY- URA CNRS 829 for cracks detection under installed fasteners in aircraftstructure. I. INTRODUCTION Eddy currents are widely to the eddy current control method : -very smallvariations of sensor response. - many geometrical

  2. DIRECT-DRIVE AND EDDY-CURRENT SEPTUM MAGNETS June 29, 2001

    E-Print Network [OSTI]

    Kemner, Ken

    DIRECT-DRIVE AND EDDY-CURRENT SEPTUM MAGNETS S. H. Kim June 29, 2001 Abstract -- Two types of thin septum magnets, direct drive and eddy current, were compared mainly in 2-D magnetic aspects. For the eddy-current type, the leakage fields calculated using OPERA-2d were compared with the calculations

  3. Eddy Current Tomography Using a Binary Markov Mila Nikolova and Ali MohammadDjafari

    E-Print Network [OSTI]

    Nikolova, Mila

    Eddy Current Tomography Using a Binary Markov Model Mila Nikolova and Ali Mohammad and notches. The medium is illuminated with a monochromatic electric field; the anomalies induce eddy currents in various fields such as nuclear power plants and aerospace engineering. 1 #12; The objective of eddy

  4. NUMERICAL SOLUTION OF A TRANSIENT NON-LINEAR AXISYMMETRIC EDDY CURRENT MODEL WITH NON-LOCAL

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    NUMERICAL SOLUTION OF A TRANSIENT NON-LINEAR AXISYMMETRIC EDDY CURRENT MODEL WITH NON@ing-mat.udec.cl This paper deals with an axisymmetric transient eddy current problem in conductive nonlinear magnetic media of the proposed scheme. Keywords: transient eddy current problem; electromagnetic losses; nonlinear magnetic

  5. A simple numerical model of the apparent loss of eddy current conductivity due to surface roughness

    E-Print Network [OSTI]

    Nagy, Peter B.

    A simple numerical model of the apparent loss of eddy current conductivity due to surface roughness of eddy current conductivity has been suggested as a possible means to allow the nondestructive evaluation, the path of the eddy current must follow a more tortuous route in the material, which produces a reduction

  6. Improvement of the magnetic core for eddy current losses decreasing in cylindrical linear actuators.

    E-Print Network [OSTI]

    Boyer, Edmond

    Improvement of the magnetic core for eddy current losses decreasing in cylindrical linear actuators the power) increases, the iron losses become high [1]. One classical method for reducing the eddy current the eddy current losses in a longitudinal flux multi-rod actuator and to compute improvement. 2 The linear

  7. Efficient Solvers for Nonlinear Time-Periodic Eddy Current F. Bachinger

    E-Print Network [OSTI]

    Schoeberl, Joachim

    Efficient Solvers for Nonlinear Time-Periodic Eddy Current Problems F. Bachinger U. Langer J. Sch-periodic eddy current problems, ranging from the description of the nonlinearity to an efficient solution setup, the magnetic field and the thereby generated eddy currents hardly penetrate into conducting

  8. A Diagnostic Suite of Models for the Evaluation of Oceanic Mesoscale Eddy Parameterizations

    E-Print Network [OSTI]

    Fox-Kemper, Baylor

    A Diagnostic Suite of Models for the Evaluation of Oceanic Mesoscale Eddy Parameterizations by S. D of Oceanic Mesoscale Eddy Parameterizations written by S. D. Bachman has been approved for the Department and Oceanic Sciences) A Diagnostic Suite of Models for the Evaluation of Oceanic Mesoscale Eddy

  9. Jet Interaction and the Influence of a Minimum Phase Speed Bound on the Propagation of Eddies

    E-Print Network [OSTI]

    Vallis, Geoff

    Jet Interaction and the Influence of a Minimum Phase Speed Bound on the Propagation of Eddies and analogs of the midlatitude eddy-driven jet and the subtropical jet is investigated in a barotropic b-plane model. In the model the subtropical jet is generated by a relaxation process and the eddy-driven jet

  10. Vessel eddy current measurement for the National Spherical Torus Experiment

    SciTech Connect (OSTI)

    Gates, D.A.; Menard, J.E.; Marsala, R.J. [Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543 (United States)

    2004-12-01T23:59:59.000Z

    A simple analog circuit that measures the National Spherical Torus Experiment (NSTX) axisymmetric eddy current distribution has been designed and constructed. It is based on simple circuit model of the NSTX vacuum vessel that was calibrated using a special axisymmetric eddy current code which was written so that accuracy was maintained in the vicinity of the current filaments [J. Menard, J. Fusion Tech. (to be published)]. The measurement and the model have been benchmarked against data from numerous vacuum shots and they are in excellent agreement. This is an important measurement that helps give more accurate equilibrium reconstructions.

  11. Low frequency eddy current benchmark study for model validation

    SciTech Connect (OSTI)

    Mooers, R. D.; Boehnlein, T. R. [University of Dayton Research Institute, Structural Integrity Division, Dayton, OH, 45469 (United States); Cherry, M. R.; Knopp, J. S. [Air Force Research Lab, NDE Division, Wright Patterson, OH 45433 (United States); Aldrin, J. C. [Computational Tools, Gurnee, IL 60031 (United States); Sabbagh, H. A. [Victor Technologies LLC, Bloomington, IN 47401 (United States)

    2011-06-23T23:59:59.000Z

    This paper presents results of an eddy current model validation study. Precise measurements were made using an impedance analyzer to investigate changes in impedance due to Electrical Discharge Machining (EDM) notches in aluminum plates. Each plate contained one EDM notch at an angle of 0, 10, 20, or 30 degrees from the normal of the plate surface. Measurements were made with the eddy current probe both scanning parallel and perpendicular to the notch length. The experimental response from the vertical and oblique notches will be reported and compared to results from different numerical simulation codes.

  12. Eddy current NDE performance demonstrations using simulation tools

    SciTech Connect (OSTI)

    Maurice, L. [EDF - CEIDRE, 2 rue Ampere, 93206 Saint-Denis Cedex 1 (France); Costan, V.; Guillot, E.; Thomas, P. [EDF - R and D, THEMIS, 1, avenue du General de Gaulle, 92141 Clamart (France)

    2013-01-25T23:59:59.000Z

    To carry out performance demonstrations of the Eddy-Current NDE processes applied on French nuclear power plants, EDF studies the possibility of using simulation tools as an alternative to measurements on steam generator tube mocks-up. This paper focuses on the strategy led by EDF to assess and use code{sub C}armel3D and Civa, on the case of Eddy-Current NDE on wears problem which may appear in the U-shape region of steam generator tubes due to the rubbing of anti-vibration bars.

  13. Dr

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy,Policy ActDetroit7471 FederalDonna Friend DonnaDowneast

  14. Dr

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69 FederalAdministrationDougSeptember12110Till

  15. Dr. Richard A. Swalin, Dean

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling CorpNew 1325.8.Enaineer District andP.Dr.

  16. Programme Coordination Professor Dr.-Ing. habil. Dr. h. c. Karl J. Thom-Kozmiensky

    E-Print Network [OSTI]

    of Mineral and Waste Processing, Waste Disposal and Geomechanics, Germany Professor Dr.-Ing. Daniel Goldmann and Geomechanics, Germany Dr. Robert Gruber President of the Association of Austrian Waste Disposal Companies (VEB

  17. Dr. Ron Ross Computer Security Division,

    E-Print Network [OSTI]

    Dasgupta, Dipankar

    SPONSORS SCADA Security October 18th (1-5PM) Workshop/Tutorial on Automation and Control Devices/SCADA Dr

  18. Dr. Edward Smith Director, International Center

    E-Print Network [OSTI]

    Rusu, Adrian

    Dr. Edward Smith Director, International Center Robinson 117 Rowan University President, Delta or at ic@rowan.edu. Sincerely, Edward C. Smith III

  19. JLab Mourns Loss of Dr. Brad Tippens, Dept. of Energy (A Message...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    https:www.jlab.orgnewsarticlesjlab-mourns-loss-dr-brad-tippens-dept-energy-message-dr-timothy-hallman-doe The Passing of Dr. William Bradford Tippens - A Message from Dr....

  20. Initial results using Eddy Current Brakes as Fast Turn-on, Programmable Physical Dampers for Haptic Rendering

    E-Print Network [OSTI]

    Hayward, Vincent

    Initial results using Eddy Current Brakes as Fast Turn-on, Programmable Physical Dampers for Haptic Machines McGill University, Montreal, Quebec, Canada ABSTRACT We demonstrate the use of eddy current propose an alternate method to create damping in a haptic interface that uses eddy current brakes. 2 EDDY

  1. 686 IEEE TRANSACTIONS ON MAGNETICS, VOL. 44, NO. 6, JUNE 2008 Estimating the Eddy-Current Modeling Error

    E-Print Network [OSTI]

    Rauhut, Holger

    686 IEEE TRANSACTIONS ON MAGNETICS, VOL. 44, NO. 6, JUNE 2008 Estimating the Eddy-Current Modeling Zurich, CH-8092 Zürich, Switzerland The eddy-current model is an approximation of the full Maxwell delivers a mathematical basis for assessing the scope of the eddy-current model. Index Terms--Eddy current

  2. 1358 IEEE TRANSACTIONS ON MAGNETICS, VOL. 40, NO. 2, MARCH 2004 Eddy-Current Effects in Circuit Breakers During Arc

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1358 IEEE TRANSACTIONS ON MAGNETICS, VOL. 40, NO. 2, MARCH 2004 Eddy-Current Effects in Circuit Abstract--This paper deals with the modeling of eddy currents generated by arc motion during opening phases in determining eddy currents in splitter plates, the second one is devoted to the calculation of eddy currents

  3. The role of eddy currents and nanoparticle size on AC magnetic fieldinduced reflow in solder/magnetic nanocomposites

    E-Print Network [OSTI]

    McHenry, Michael E.

    The role of eddy currents and nanoparticle size on AC magnetic fieldinduced reflow in solder://jap.aip.org/about/rights_and_permissions #12;The role of eddy currents and nanoparticle size on AC magnetic fieldinduced reflow in solder be derived from eddy current losses in Cu planes in the substrate board. Eddy current heating in Cu sheets

  4. Title Position Holder Increased GPA Student Affairs Dr. Charles Brown

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Dr. Charles Brown Associate Vice President & Dean of Students Dr. Corey King 3 6 15 $4000-10,000 per Dr. Charles Brown Associate Vice President & Dean of Students Dr. Corey King Develop a program. Charles Brown Associate Vice President & Dean of Students Dr. Corey King identify student needs, location

  5. Large-eddy simulation of multiphase flows in complex combustors

    E-Print Network [OSTI]

    Mahesh, Krishnan

    Large-eddy simulation of multiphase flows in complex combustors S. V. Apte1 , K. Mahesh2 , F. Ham1 to accurately predict reacting multi-phase flows in practical combustors involving complex physical phenomena-turbine combustor geometries to evaluate the predictions made for multiphase, turbulent flow. 1 Introduction

  6. EddyViscosity Time Reversing Waves a Dissipative Environment

    E-Print Network [OSTI]

    Garnier, Josselin

    where linear shallow water speed is given o o . The kinematic viscosity denoted parameter ratio been shown [6] nonlinear (inviscid) shallow water waves pres­ ence a random topography and alsoEddyViscosity Time Reversing Waves a Dissipative Environment Josselin Garnier Laboratoire

  7. Bottom Drag, eddy diffusivity, wind work and the power integrals

    E-Print Network [OSTI]

    Young, William R.

    Bottom Drag, eddy diffusivity, wind work and the power integrals Bill Young, Andrew Thompson field i.e., the meridional heat flux is pro Moreover, the mechanical energy balance in a statistical Moreover, the mechanical energy balance in a statistically st Appendix A) is U-2 x = | - 2 |2 + hyp

  8. Natural control of the boll weevil (Anthonomus grandis Boheman, Coleoptera: Curculionidae) by the red imported fire ant (Solenopsis invicta Buren, Hymenoptera: Formicidae)

    E-Print Network [OSTI]

    Fillman, David Allen

    1982-01-01T23:59:59.000Z

    Control of the Boll Weevil (Anthonomus ~randis Boheman, Coleoptera: Curculionidae) by the Red Imported r' A (~sl ' ' ' B, Hy r: r ' 'd ) David Allen Fillman, B. S. , Baylor University Chairman of Advisory Committee: Dr. Winfield L. Sterling This study... (flower buds). Both field and laboratory experiments suggest that fire ants exhibit a functional response to changing weevil densities. ACKNOWLEDGEMENT S The author expresses his gratitude to Dr. W, L. Sterling for his guidance and advice during...

  9. Public Policy and Agriculture Dr. Jeff Burkhardt

    E-Print Network [OSTI]

    Hill, Jeffrey E.

    Public Policy and Agriculture Dr. Jeff Burkhardt With Dr. John VanSickle Food & Resource Economics & Agriculture? #12;Why Public Policy for Food & Agriculture? · Economic instability #12;Why Public Policy for Food & Agriculture? · Economic instability · Globalization #12;Why Public Policy for Food & Agriculture

  10. November 25, 2002 Dr. Ray Orbach

    E-Print Network [OSTI]

    available energy source, including no emissions of carbon dioxide, no risk of a severe accident, no longNovember 25, 2002 Dr. Ray Orbach Director, Office of Science U.S. Department of Energy 1000 Independence Avenue, S.W. Washington, D.C. 20585 Dear Dr. Orbach: The Fusion Energy Sciences Advisory Committee

  11. Computer Science Faculty Dr. Stephen Beale, Research Assistant Professor

    E-Print Network [OSTI]

    Adali, Tulay

    Computer Science Faculty Dr. Stephen Beale, Research Assistant Professor Syntactic and semantic, multi-engine NLP applications Dr. Richard Chang, Associate Professor Computational complexity theory, natural language processing, intelligent agents Dr. Milton Halem, Research Professor Scientific computing

  12. CEVE FacultyCEVE Faculty Dr. Pedro Alvarez, Chairman

    E-Print Network [OSTI]

    Alvarez, Pedro J.

    CEVE FacultyCEVE Faculty Dr. Pedro Alvarez, Chairman Environmental Biotechnology & Nanotechnology Engineering CIVIL & ENVIRONMENTAL SSPEED Center Dr. Daniel Cohan Atmospheric Modeling & Policy Engineering Dr toward objectives y y which undergraduate students have opportunities to get involved. Environmental

  13. Chili with Red Beans Ingredients

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    tender, about three minutes. 4. Open kidney beans and pour into a colander. Rinse under cool waterChili with Red Beans Ingredients: 1/2 pound ground beef, extra lean 1 medium onion, chopped 4 cups red kidney beans, soaked overnight or 2 cans, rinsed 3 cups tomatoes, chopped, or 28 ounces, canned 1

  14. Green Roofs: Optimizing the Water Quality of Rooftop Runoff Brett Long, Dr. Shirley E. Clark, Dr. Katherine Baker, Dr. Robert Berghage

    E-Print Network [OSTI]

    Clark, Shirley E.

    . Katherine Baker, Dr. Robert Berghage Environmental Pollution Control Program at Penn State Harrisburg

  15. Dr. Bhaskaran Gopalakrishnan Extends the Reach of the West Virginia...

    Broader source: Energy.gov (indexed) [DOE]

    Dr. Bhaskaran Gopalakrishnan (left) and Dr. Ed Crowe (right, Engineering Scientist at West Virginia University) discuss some of the findings of an energy audit of a small...

  16. Science on Saturday: Dr. Sabine Kastner, Princeton University...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Science on Saturday: Dr. Sabine Kastner, Princeton University: Words, Tools and the Brain: Why Humans Aren't Just Another Ape Dr. Sabine Kastner, Neuroscientist Princeton...

  17. Upholding Dr. King's Dream and Inspiring the Next Generation...

    Office of Environmental Management (EM)

    Upholding Dr. King's Dream and Inspiring the Next Generation Through STEM Education Upholding Dr. King's Dream and Inspiring the Next Generation Through STEM Education January 27,...

  18. Geothermal Energy Association Honors NREL's Dr. Bharathan for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Association Honors NREL's Dr. Bharathan for Work in Condenser Technology Geothermal Energy Association Honors NREL's Dr. Bharathan for Work in Condenser Technology July 16, 2012 -...

  19. Secretary Moniz Hosts Energy Security Symposium, Honors Dr. Daniel...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hosts Energy Security Symposium, Honors Dr. Daniel Yergin with First James R. Schlesinger Medal for Energy Security Secretary Moniz Hosts Energy Security Symposium, Honors Dr....

  20. 1 Dr. C. Adiga 2 Prof. Ajit Iqbal Singh

    E-Print Network [OSTI]

    Bandyopadhyay, Antar

    . Amarnath V 7 Ms. Ambily A.A. 8 Dr. Anant R. Shastri 9 Mr. Ankur Gupta 10 Dr. Anant Wasudeo Vyawahare 11 Mr

  1. Alcian Blue Cartilage Staining Beatrice Jegalian & Eddy M. De Robertis

    E-Print Network [OSTI]

    De Robertis, Eddy M.

    Alcian Blue Cartilage Staining Beatrice Jegalian & Eddy M. De Robertis (Cell 71, 901-910, 1992) 1 will require more time) in 0.05% Alcian blue 8GX (Fisher) in 5% acetic acid. 6. Wash embryos in 5% acetic acid Alcian Blue 8 g NaCl 0.05% Alcian blue 8GX .2 g KCl 5% acetic acid 1.44 g Na2HPO4 water .24 g KH2PO4 800

  2. Automated detection and location of indications in eddy current signals

    DOE Patents [OSTI]

    Brudnoy, David M. (Albany, NY); Oppenlander, Jane E. (Burnt Hills, NY); Levy, Arthur J. (Schenectady, NY)

    2000-01-01T23:59:59.000Z

    A computer implemented information extraction process that locates and identifies eddy current signal features in digital point-ordered signals, signals representing data from inspection of test materials, by enhancing the signal features relative to signal noise, detecting features of the signals, verifying the location of the signal features that can be known in advance, and outputting information about the identity and location of all detected signal features.

  3. Dr. Richard Knaub | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian NuclearandJunetrack graphics4Dimitri Kusnezov -Purpose TheDougDr.Dr.Dr.

  4. Dr. Melih Sener | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. DanielDr.Dr.Melih Sener

  5. Dr. Mike Wasielewski | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. DanielDr.Dr.Melih

  6. Dr. Naomi Ginsberg | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. DanielDr.Dr.MelihNaomi

  7. Subsurface Defect Detection in Metals with Pulsed Eddy Current

    SciTech Connect (OSTI)

    Plotnikov, Yuri A. [GE Global Research Center, One Research Circle, Niskayuna, NY 12309-1135 (United States); Bantz, Walter J. [GE Aircraft Engines M and QTD, 10270 St. Rita Lane, Cincinnati, OH 45215 (United States)

    2005-04-09T23:59:59.000Z

    The eddy current (EC) method is traditionally used for open surface crack detection in metallic components. Subsurface voids in bulk metals can also be detected by the eddy current devices. Taking into consideration the skin effect in conductive materials, a lower frequency of electromagnetic excitation is used for a deeper penetration. A set of special specimens was designed and fabricated to investigate sensitivity to subsurface voids. Typically, flat bottom holes (FBHs) are used for subsurface defect simulation. This approach is not very representative of real defects for eddy current inspection because the FBH depth extends to the bottom of the specimen. Two-layer specimens with finite depth FBHs were fabricated and scanned with conventional EC of variable frequency. Sensitivity and spatial resolution of EC diminish with flaw depth. The pulsed EC approach was applied for flaw detection at variable distance under the surface. The transient response from multi-layer model was derived and compared to experiments. The multi-frequency nature of pulsed excitation provides effective coverage of a thick layer of material in one pass. Challenging aspects of subsurface flaw detection and visualization using the EC technique are discussed.

  8. Eddy current scanning of niobium for SRF cavities at Fermilab

    SciTech Connect (OSTI)

    Boffo, C.; Bauer, P.; Foley, M.; Antoine, C.; Cooper, C.; /Fermilab; Brinkmann, A.; /DESY

    2006-08-01T23:59:59.000Z

    In the framework of SRF cavity development, Fermilab is creating the infrastructure needed for the characterization of the material used in the cavity fabrication. An important step in the characterization of ''as received'' niobium sheets is eddy current scanning. Eddy current scanning is a non-destructive technique first adopted and further developed by DESY with the purpose of checking the cavity material for subsurface defects and inclusions. Fermilab has received and further upgraded a commercial eddy current scanner previously used for the SNS project. This scanner is now used daily to scan the niobium sheets for the Fermilab third harmonic, the ILC, and the Proton Driver cavities. After optical inspection, more than 400 squares and disks have been scanned and when necessary checked at the optical and electron microscopes, anodized, or measured with profilometers looking for surface imperfections that might limit the performance of the cavities. This paper gives a status report on the scanning results obtained so far, including a discussion of the classification of signals being detected.

  9. Method and apparatus for correcting eddy current signal voltage for temperature effects

    DOE Patents [OSTI]

    Kustra, Thomas A. (N. Huntingdon, PA); Caffarel, Alfred J. (Pittsburgh, PA)

    1990-01-01T23:59:59.000Z

    An apparatus and method for measuring physical characteristics of an electrically conductive material by the use of eddy-current techniques and compensating measurement errors caused by changes in temperature includes a switching arrangement connected between primary and reference coils of an eddy-current probe which allows the probe to be selectively connected between an eddy current output oscilloscope and a digital ohm-meter for measuring the resistances of the primary and reference coils substantially at the time of eddy current measurement. In this way, changes in resistance due to temperature effects can be completely taken into account in determining the true error in the eddy current measurement. The true error can consequently be converted into an equivalent eddy current measurement correction.

  10. Dr. Martin Luther King Jr. Birthday Celebration

    Broader source: Energy.gov [DOE]

    Today, Dr. King is memorialized on the National Mall where he once spoke, a symbol of how far our Nation has come and a testament to the quiet heroes whose names may never appear in history books,...

  11. Prof.Dr.Siegfried Bocherer Vorlesungsankundigung

    E-Print Network [OSTI]

    Mannheim, Universität

    Prof.Dr.Siegfried Bocherer Vorlesungsankundigung Herbstsemester 2007 ALGEBRA Wie die LINEARE ALGEBRA aus dem Studium linearer Gleichungssysteme hervorgegangen ist, so kann auch die ALGEBRA angesehen ge- ometrischer Konstruktionen mittels Zirkel und Lineal (Dreiteilung des Winkels, Konstruktion des

  12. CURRICULUM VITAE Dr. Edward (Ted) Van Vleet

    E-Print Network [OSTI]

    Meyers, Steven D.

    Biogeochemistry American Chemical Society Hydrocarbon Pollution European Assoc. Organic Geochemists Biochemical Committee of the World Cultural Council (Mexico). Committee to choose the Albert Einstein World Award - 1987). Research: Hydrocarbon Pollution in the Dry Tortugas. Hosted Visiting Scholar (Dr. Wilhelm Hagen

  13. Dr. Steven Chu, Secretary of Energy

    ScienceCinema (OSTI)

    Dr. Chu

    2010-09-01T23:59:59.000Z

    Remarks by Dr. Chu to staff members at Oak Ridge National Laboratory on March 23, 2010. Chu talks about the importance of scientific innovation and the need for new energy technologies.

  14. Two Lectures By Dr. Donna Lardiere

    E-Print Network [OSTI]

    Indiana University

    Studies Graduate Student Organization; Indiana University Student Association Funding Board; DepartmentTwo Lectures By Dr. Donna Lardiere Professor of Linguistics Georgetown University Thursday approaches Sponsors: Second Language Studies Graduate Student Organization Indiana University Student

  15. The Science of Science Dr. Katy Brner

    E-Print Network [OSTI]

    Menczer, Filippo

    1 The Science of Science Dr. Katy Brner Cyberinfrastructure for Network Science Center, Director Information Visualization Laboratory, Director School of Library and Information Science Indiana University February 20th, 2008 Computational Scientometrics: Studying Science by Scientific Means Brner, Katy, Chen

  16. Science Maps in Action Dr. Katy Brner

    E-Print Network [OSTI]

    Menczer, Filippo

    Science Maps in Action Dr. Katy Brner Cyberinfrastructure for Network Science Center, Director Information Visualization Laboratory, Director School of Library and Information Science Indiana University Computational Scientometrics: Studying Science by Scientific Means Brner, Katy, Chen, Chaomei, and Boyack

  17. Dr. Steven Chu, Secretary of Energy

    SciTech Connect (OSTI)

    Dr. Chu

    2010-03-24T23:59:59.000Z

    Remarks by Dr. Chu to staff members at Oak Ridge National Laboratory on March 23, 2010. Chu talks about the importance of scientific innovation and the need for new energy technologies.

  18. Jamaican red clay tobacco pipes

    E-Print Network [OSTI]

    Heidtke, Kenan Paul

    1992-01-01T23:59:59.000Z

    JAMAICAN RED CLAY TOBACCO PIPES A Thesis by KENAN PAUL HEIDTKE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF ARTS December 1992 Major Subject...: Anthropology JAMAICAN RED CLAY TOBACCO PIPES A Thesis by KENAN PAUL HEIDTKE Approved as to style and content by: Dorm L. Hamilton (Chair of Committee) Frederick H. van Doorninck, J (Member) enry C. Schmidt (Member) Vaughn M. Bryant (Head...

  19. Eddy current probe with foil sensor mounted on flexible probe tip and method of use

    SciTech Connect (OSTI)

    Viertl, John R. M. (Niskayuna, NY); Lee, Martin K. (Niskayuna, NY)

    2001-01-01T23:59:59.000Z

    A pair of copper coils are embedded in the foil strip. A first coil of the pair generates an electromagnetic field that induces eddy currents on the surface, and the second coil carries a current influenced by the eddy currents on the surface. The currents in the second coil are analyzed to obtain information on the surface eddy currents. An eddy current probe has a metal housing having a tip that is covered by a flexible conductive foil strip. The foil strip is mounted on a deformable nose at the probe tip so that the strip and coils will conform to the surface to which they are applied.

  20. Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel...

    Broader source: Energy.gov (indexed) [DOE]

    Combustion Research Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel Engine Combustion Research 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle...

  1. Vehicle Technologies Office Merit Review 2014: Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research

    Broader source: Energy.gov [DOE]

    Presentation given by Sandia National Laboratories at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about large eddy...

  2. Adaptive Detached Eddy Simulation of a High Lift Wing with Active...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and slat support). Adaptive Detached Eddy Simulation of a High Lift Wing with Active Flow Control PI Name: Kenneth Jansen PI Email: jansenke@colorado.edu Institution:...

  3. DR. MARTIN L. KING, JR. BIRTHDAY CELEBRATION

    Broader source: Energy.gov [DOE]

    The MLK Day of Service is a way to transform Rev. Dr. Martin Luther King, Jr.s life and teachings into community action that helps solve social problems. Rev. Dr. Martin Luther King, Jr. was a vital figure of the modern era and a pivotal figure in the Civil Rights Movement. His lectures and dialogues stirred the concern and sparked the conscience of a generation.

  4. A GMBCG galaxy cluster catalog of 55,880 rich clusters from SDSS DR7

    SciTech Connect (OSTI)

    Hao, Jiangang; McKay, Timothy A.; Koester, Benjamin P.; Rykoff, Eli S.; Rozo, Eduardo; Annis, James; Wechsler, Risa H.; Evrard, August; Siegel, Seth R.; Becker, Matthew; Busha, Michael; /Fermilab /Michigan U. /Chicago U., Astron. Astrophys. Ctr. /UC, Santa Barbara /KICP, Chicago /KIPAC, Menlo Park /SLAC /Caltech /Brookhaven

    2010-08-01T23:59:59.000Z

    We present a large catalog of optically selected galaxy clusters from the application of a new Gaussian Mixture Brightest Cluster Galaxy (GMBCG) algorithm to SDSS Data Release 7 data. The algorithm detects clusters by identifying the red sequence plus Brightest Cluster Galaxy (BCG) feature, which is unique for galaxy clusters and does not exist among field galaxies. Red sequence clustering in color space is detected using an Error Corrected Gaussian Mixture Model. We run GMBCG on 8240 square degrees of photometric data from SDSS DR7 to assemble the largest ever optical galaxy cluster catalog, consisting of over 55,000 rich clusters across the redshift range from 0.1 < z < 0.55. We present Monte Carlo tests of completeness and purity and perform cross-matching with X-ray clusters and with the maxBCG sample at low redshift. These tests indicate high completeness and purity across the full redshift range for clusters with 15 or more members.

  5. A GMBCG Galaxy Cluster Catalog of 55,424 Rich Clusters from SDSS DR7

    SciTech Connect (OSTI)

    Hao, Jiangang; /Fermilab; McKay, Timothy A.; /Michigan U.; Koester, Benjamin P.; /Chicago U.; Rykoff, Eli S.; /UC, Santa Barbara /LBL, Berkeley; Rozo, Eduardo; /Chicago U.; Annis, James; /Fermilab; Wechsler, Risa H.; /SLAC; Evrard, August; /Michigan U.; Siegel, Seth R.; /Michigan U.; Becker, Matthew; /Chicago U.; Busha, Michael; /SLAC; Gerdes, David; /Michigan U.; Johnston, David E.; /Fermilab; Sheldon, Erin; /Brookhaven

    2011-08-22T23:59:59.000Z

    We present a large catalog of optically selected galaxy clusters from the application of a new Gaussian Mixture Brightest Cluster Galaxy (GMBCG) algorithm to SDSS Data Release 7 data. The algorithm detects clusters by identifying the red sequence plus Brightest Cluster Galaxy (BCG) feature, which is unique for galaxy clusters and does not exist among field galaxies. Red sequence clustering in color space is detected using an Error Corrected Gaussian Mixture Model. We run GMBCG on 8240 square degrees of photometric data from SDSS DR7 to assemble the largest ever optical galaxy cluster catalog, consisting of over 55,000 rich clusters across the redshift range from 0.1 < z < 0.55. We present Monte Carlo tests of completeness and purity and perform cross-matching with X-ray clusters and with the maxBCG sample at low redshift. These tests indicate high completeness and purity across the full redshift range for clusters with 15 or more members.

  6. Climate Sensitivity of Marine Energy Dr Gareth P. Harrison* and Dr A. Robin Wallace

    E-Print Network [OSTI]

    Harrison, Gareth

    Introduction Marine energy has a key role to play in meeting long term renewable energy targets as part examination is justified. #12;2 2 Changing Offshore Climate From the late 1980s the trend of increasing wave1 Climate Sensitivity of Marine Energy Dr Gareth P. Harrison* and Dr A. Robin Wallace School

  7. Closing Remarks: A Visit to Dr. Stout's and Dr. Murphy's Forest Health Clinic

    E-Print Network [OSTI]

    Fried, Jeremy S.

    Closing Remarks: A Visit to Dr. Stout's and Dr. Murphy's Forest Health Clinic RussellT. Graham and the partici- silvicultu-ristsin central North Carolina. Camp pants. Terrie and I were looking for a clinic is complete, I might attend a rehabilitation clinic. She said a clinic would help me readjust to society

  8. DESIGNING BOTTLE PRODUCTS USING ENVIRONMENTAL CRITERIA Dr. Nicholas Bilalis, Dr. Evan Diamadopoulos, Vassilis Kouroublakis,

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    cycle has a reasonable impact to the environment. More materials (metal, glass, plastic) per bottle lead1 DESIGNING BOTTLE PRODUCTS USING ENVIRONMENTAL CRITERIA Dr. Nicholas Bilalis, Dr. Evan criteria. This paper reports on the development of a methodology for designing bottles using specific

  9. The Centre for Blood Research Wolfgang R. Mayr Prof. Dr. Dr. h.c.

    E-Print Network [OSTI]

    Strynadka, Natalie

    The Centre for Blood Research Wolfgang R. Mayr Prof. Dr. Dr. h.c. Department for Blood Group Affairs, Canadian Blood Services A chimera is an organism consisting of two (or more) zygotes. Two types (transplacental passage of blood cells from the mother to the child and vice versa) or permanent (blood chimerism

  10. References: 1 NDT Resource Center (Accessed March 9, 2012)[Online]. Available at: http://www.ndt-ed.org/EducationResources/CommunityCollege/EddyCurrents/Introduction/IntroductiontoET.htm, 2 Calderwood, C & Nelligan, T. Eddy Current Testing. Olympus Corpor

    E-Print Network [OSTI]

    .org/EducationResources/CommunityCollege/EddyCurrents/Introduction/IntroductiontoET.htm, 2 Calderwood, C & Nelligan, T. Eddy Current Testing. Olympus Corporation,2011.[Online]. Available at: http://www.olympus-ims.com/en/eddycurrenttesting/ , 3 Santandrea. L., & Le Bihan, Y. Using COMSOL-Multiphysics in an Eddy Current Non

  11. Applications of large eddy simulation methods to gyrokinetic turbulence

    SciTech Connect (OSTI)

    Ban Navarro, A., E-mail: alejandro.banon.navarro@ipp.mpg.de; Happel, T. [Max-Planck-Institut fr Plasmaphysik, EURATOM Association, D-85748 Garching (Germany)] [Max-Planck-Institut fr Plasmaphysik, EURATOM Association, D-85748 Garching (Germany); Teaca, B. [Applied Mathematics Research Centre, Coventry University, Coventry CV1 5FB (United Kingdom) [Applied Mathematics Research Centre, Coventry University, Coventry CV1 5FB (United Kingdom); Max-Planck fr Sonnensystemforschung, Max-Planck-Str. 2, D-37191 Katlenburg-Lindau (Germany); Max-Planck/Princeton Center for Plasma Physics (Germany); Jenko, F. [Max-Planck-Institut fr Plasmaphysik, EURATOM Association, D-85748 Garching (Germany) [Max-Planck-Institut fr Plasmaphysik, EURATOM Association, D-85748 Garching (Germany); Max-Planck/Princeton Center for Plasma Physics (Germany); Hammett, G. W. [Max-Planck/Princeton Center for Plasma Physics, Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543 (United States)] [Max-Planck/Princeton Center for Plasma Physics, Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543 (United States); Collaboration: ASDEX Upgrade Team

    2014-03-15T23:59:59.000Z

    The large eddy simulation (LES) approachsolving numerically the large scales of a turbulent system and accounting for the small-scale influence through a modelis applied to nonlinear gyrokinetic systems that are driven by a number of different microinstabilities. Comparisons between modeled, lower resolution, and higher resolution simulations are performed for an experimental measurable quantity, the electron density fluctuation spectrum. Moreover, the validation and applicability of LES is demonstrated through a series of diagnostics based on the free energetics of the system.

  12. Methods of and apparatus for levitating an eddy current probe

    DOE Patents [OSTI]

    Stone, William J. (Kansas City, MO)

    1988-05-03T23:59:59.000Z

    An eddy current probe is supported against the force of gravity with an air earing while being urged horizontally toward the specimen being examined by a spring and displaced horizontally against the force of the spring pneumatically. The pneumatic displacement is accomplished by flowing air between a plenum chamber fixed with respect to the probe and the surface of the specimen. In this way, the surface of the specimen can be examined without making mechanical contact therewith while precisely controlling the distance at which the probe stands-off from the surface of the specimen.

  13. Crack detection using pulsed eddy current stimulated thermography

    SciTech Connect (OSTI)

    Kostson, E.; Weekes, B.; Almond, D. P. [RCNDE, Department of Mechanical Engineering, University of Bath (United Kingdom); Wilson, J.; Tian, G. Y. [School of Electrical, Electronic and Computer Engineering, Newcastle University (United Kingdom)

    2011-06-23T23:59:59.000Z

    This contribution presents results from studies investigating factors that influence the detection of surface breaking cracks using pulsed eddy current thermography. The influences of the current strength and crack orientation in both ferromagnetic and non-ferromagnetic metals have been investigated. It has been found that crack detection is far more sensitive to crack orientation in non-ferromagnetic metals than in ferromagnetic metals. The effects of crack size on detectability are presented for a large number of steel, nickel alloy and titanium samples. Results of studies comparing crack images obtained prior and after coating a nickel alloy sample with a thermal barrier coating are presented.

  14. Eddy current system for inspection of train hollow axles

    SciTech Connect (OSTI)

    Chady, Tomasz; Psuj, Grzegorz; Sikora, Ryszard; Kowalczyk, Jacek; Spychalski, Ireneusz [Department of Electrical and Computer Engineering, Faculty of Electrical Engineering, West Pomeranian University of Technology, Szczecin (Poland)

    2014-02-18T23:59:59.000Z

    The structural integrity of wheelsets used in rolling stock is of great importance to the safety. In this paper, electromagnetic system with an eddy current transducer suitable for the inspection of hollow axles have been presented. The transducer was developed to detect surface braking defects having depth not smaller than 0.5 mm. Ultrasound technique can be utilized to inspect the whole axle, but it is not sufficiently sensitive to shallow defects located close to the surface. Therefore, the electromagnetic technique is proposed to detect surface breaking cracks that cannot be detected by ultrasonic technique.

  15. The Role of Eddy-Tansport in the Thermohaline Circulation

    SciTech Connect (OSTI)

    Dr. Paola Cessi

    2011-11-17T23:59:59.000Z

    Several research themes were developed during the course of this project. (1) Low-frequency oceanic varibility; (2) The role of eddies in the Antarctic Circumpolar Current (ACC) region; (3) Deep stratification and the overturning circulation. The key findings were as follows: (1) The stratification below the main thermocline (at about 500m) is determined in the circumpolar region and then communicated to the enclosed portions of the oceans through the overturning circulation. (2) An Atlantic pole-to-pole overturning circulation can be maintained with very small interior mixing as long as surface buoyancy values are shared between the northern North Atlantic and the ACC region.

  16. Suppression of Eddy Diffusivity across Jets in the Southern Ocean RAFFAELE FERRARI AND MAXIM NIKURASHIN

    E-Print Network [OSTI]

    Ferrari, Raffaele

    of the Antarctic Circumpolar Current, despite enhanced values of eddy kinetic energy. The expression in the core of the Antarctic Circumpolar Current or on its flanks. A simple expression is derived statistics. This novel expression predicts suppression of the cross-jet eddy diffusivity in the core

  17. Flame Stability Analysis in an Ultra Compact Combustor Using Large-Eddy Simulation

    E-Print Network [OSTI]

    Raman, Venkat

    Flame Stability Analysis in an Ultra Compact Combustor Using Large-Eddy Simulation C. Lietz , C Base, Ohio 45433 Large eddy simulation (LES) of an experimental ultra-compact combustor (UCC as a conven- tional combustor path. In order to reduce the penalty due to increased weight of these burners

  18. Large-eddy simulation of swirling particle-laden flows in a coaxial-jet combustor

    E-Print Network [OSTI]

    Apte, Sourabh V.

    Large-eddy simulation of swirling particle-laden flows in a coaxial-jet combustor S.V. Apte a,* , K 2003 Abstract Large-eddy simulation (LES) of particle-laden, swirling flow in a coaxial-jet combustor;cyclone combustors, and biomass gasifiers (Lefebvre, 1989). The physics of such flows is extremely complex

  19. Study of natural ventilation in buildings by large eddy simulation Yi Jiang and Qingyan Chen*

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    1 Study of natural ventilation in buildings by large eddy simulation Yi Jiang and Qingyan Chen 02139 *Phone: (617) 253-7714, Fax: (617) 253-6152, Email: qchen@mit.edu Abstract Natural ventilation in the mechanical ventilation systems. Two subgrid-scale models of large eddy simulation (LES), a Smagorinsky

  20. Extremely short impulse eddy current system for titanium and inconel samples testing

    SciTech Connect (OSTI)

    Chady, T.; Frankowski, P. [Faculty of Electrical Engineering, West Pomeranian University of Technology, Sikorskiego 37, 70-313 Szczecin (Poland)

    2011-06-23T23:59:59.000Z

    This paper presents a new system for eddy current testing. The system enables tests with very short current impulses. Therefore, the frequency spectrum of the excitation signal is very wide. In this paper, a study of eddy current differential transducer for testing titanium element is also presented.

  1. Monsoon surges trigger oceanic eddy formation and propagation in the lee of the Philippine Islands

    E-Print Network [OSTI]

    with eddies that form in the lee of the Cabo Verde and Canary Islands [Chavanne et al., 2002; Sangra et al., 2007]. The Hawaii, Cabo Verde and Canary Islands are located in the trades where winds have typicalMonsoon surges trigger oceanic eddy formation and propagation in the lee of the Philippine Islands

  2. Anticyclonic and cyclonic eddies of subtropical origin in the subantarctic zone south of Africa

    E-Print Network [OSTI]

    Boyer, Edmond

    that the meridional propagation of mesoscale eddies at distinct sectors of the Subtropical Front (STF), such as those with this view, Dencausse et al. [2011] recently observed that, due to the intense mesoscale activity interval appears as a preferential pathway for mesoscale structures. Here, indeed, warm eddies

  3. Eddy Amplitudes in Baroclinic Turbulence Driven by Nonzonal Mean Flow: Shear Dispersion of Potential Vorticity

    E-Print Network [OSTI]

    Smith, K. Shafer

    Sciences, New York University, New York, New York (Manuscript received 13 April 2006, in final form 17 July of potential vorticity (the source of eddy energy) in the zonal and meridional directions are fundamentally. The resulting flux is orders of magnitude higher than in the cross-jet direction, and thus eddy energies driven

  4. Large-eddy simulation of a wind turbine wake in turbulent

    E-Print Network [OSTI]

    Firestone, Jeremy

    Large-eddy simulation of a wind turbine wake in turbulent neutral shear flow Shengbai Xie, Cristina-similar velocity profile existing in the wake after a wind turbine? How does the wake influence the vertical? Motivation #12; Large-eddy simulation for turbulent flow field Actuator-line model for wind turbine ui

  5. Eddy-Induced Heat Transport in the Subtropical North Pacific from Argo, TMI, and Altimetry Measurements

    E-Print Network [OSTI]

    Qiu, Bo

    Eddy-Induced Heat Transport in the Subtropical North Pacific from Argo, TMI, and Altimetry transport induced by mesoscale oceanic eddies is estimated by combining satellite- derived sea surface temperaturesalinity data. In the North Pacific Ocean subtropical gyre, warm (cold) temperature anomalies

  6. Mesoscale eddies northeast of the Hawaiian archipelago from satellite altimeter observations

    E-Print Network [OSTI]

    Qiu, Bo

    Mesoscale eddies northeast of the Hawaiian archipelago from satellite altimeter observations; published 16 March 2010. [1] Enhanced mesoscale eddy activity northeast of the Hawaiian archipelago by 5 longitude subregions revealed the dominant mesoscale periods ranging from 90 days near 18N

  7. Mesoscale eddies in the northeastern Pacific tropical-subtropical transition zone: Statistical characterization from satellite altimetry

    E-Print Network [OSTI]

    Mesoscale eddies in the northeastern Pacific tropical-subtropical transition zone: Statistical February 2012; revised 24 August 2012; accepted 6 September 2012; published 24 October 2012. [1] Mesoscale cycle. Although mesoscale eddies in these areas have been previously reported, this study provides

  8. Seasonal Modulation of Eddy Kinetic Energy and Its Formation Mechanism in the Southeast Indian Ocean

    E-Print Network [OSTI]

    Qiu, Bo

    energy and exert profound impacts on large-scale ocean circulations. Satellite altimeter ob- servations- sociations with the large-scale oceanic circulations and the climate. The global eddy kinetic energy (EKESeasonal Modulation of Eddy Kinetic Energy and Its Formation Mechanism in the Southeast Indian

  9. Analysis of a FEM-BEM model posed on the conducting domain for the time-dependent eddy current problem

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    Analysis of a FEM-BEM model posed on the conducting domain for the time-dependent eddy current´atica, Universidad de Concepci´on, Casilla 160-C, Concepcion, Chile. Abstract The three-dimensional eddy current time. Keywords: Boundary elements; eddy current problem; finite elements; time-dependent electromagnetic problem

  10. Eddy current evaluation of air-gaps in aeronautical multilayered assemblies using multi-frequency a behavioral model

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Eddy current evaluation of air-gaps in aeronautical multilayered assemblies using multi in an aeronautical multilayered metallic assembly, by the means of the eddy current method. A behavioural multi, either for simulated or experimental data. KEYWORDS: Non-destructive evaluation, eddy currents, multi

  11. ANALYSIS OF THE A, V -A -POTENTIAL FORMULATION FOR THE EDDY CURRENT PROBLEM IN A BOUNDED DOMAIN.

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    ANALYSIS OF THE A, V - A - POTENTIAL FORMULATION FOR THE EDDY CURRENT PROBLEM IN A BOUNDED DOMAIN analysis of the well-known A, V - A- potential formulation for the eddy current problem. The resulting on standard nodal finite elements. Key words. eddy currents, potential formulation, well-posedness, finite

  12. Page 1 of 31 Why does the Loop Current tend to shed more eddies in summer and winter?1

    E-Print Network [OSTI]

    Page 1 of 31 Why does the Loop Current tend to shed more eddies in summer and winter?1 Y.-L. Chang seasonal preferences of Loop Current eddy shedding, more in summer and5 winter and less in fall and spring in virtually any21 month of the year. That the Loop Current can intrude into the Gulf and eddies can separate

  13. NDT&E International 39 (2006) 641651 Iterative inversion method for eddy current profiling of near-surface

    E-Print Network [OSTI]

    Nagy, Peter B.

    2006-01-01T23:59:59.000Z

    NDT&E International 39 (2006) 641651 Iterative inversion method for eddy current profiling of near-dependent penetration depth, eddy current measurements are capable of mapping the near-surface depth profile-independent intrinsic electric conductivity depth profile from the frequency-dependent apparent eddy current

  14. A UNIFIED ANALYSIS OF TRANSMISSION CONDITIONS FOR THIN CONDUCTING SHEETS IN THE TIME-HARMONIC EDDY CURRENT MODEL

    E-Print Network [OSTI]

    Nabben, Reinhard

    -harmonic eddy current model in two dimensions. The first criterion is the robustness with respect Expansions, Eddy- current model AMS subject classifications. 65N30, 35C20, 35J25, 41A60, 35B40, 78M30, 78M35 Introduction. For simulations of the eddy current problem with thin sheets by standard methods, like the finite

  15. IEEE TRANSACTIONS ON MAGNETICS, VOL. 36, NO. 1, JANUARY 2000 281 Thin-Skin Eddy-Current Interaction with

    E-Print Network [OSTI]

    Bowler, John R.

    IEEE TRANSACTIONS ON MAGNETICS, VOL. 36, NO. 1, JANUARY 2000 281 Thin-Skin Eddy-Current Interaction with Semielliptical and Epicyclic Cracks J. R. Bowler, Member, IEEE, and N. Harfield Abstract--Eddy-current probe current, nondestructive evaluation. I. INTRODUCTION IN EDDY-CURRENT nondestructive evaluation, cracks

  16. Numerical analysis of a finite element method for the axisymmetric eddy current model of an induction furnace

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    Numerical analysis of a finite element method for the axisymmetric eddy current model, 27002, Lugo, Spain The aim of this paper is to analyze a finite element method to solve an eddy current of the method are reported. Keywords: low-frequency harmonic Maxwell equations, eddy current problems, finite

  17. IEEE TRANSACTIONS ON MAGNETICS, VOL. 41, NO. 9, SEPTEMBER 2005 2455 Eddy Currents Induced in a Finite Length Layered

    E-Print Network [OSTI]

    Bowler, John R.

    IEEE TRANSACTIONS ON MAGNETICS, VOL. 41, NO. 9, SEPTEMBER 2005 2455 Eddy Currents Induced the calculation of eddy currents in a two-layer conducting rod of finite length excited by a coaxial circular coil. Index Terms--Coil impedance, eddy current, eigenfunction expansion, finite rod. I. INTRODUCTION

  18. EXPERIMENTAL VALIDATION OF AN EDDY CURRENT PROBE DEDICATED TO THE MULTI-FREQUENCY IMAGING OF BORE HOLES

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1 EXPERIMENTAL VALIDATION OF AN EDDY CURRENT PROBE DEDICATED TO THE MULTI-FREQUENCY IMAGING OF BORE ______________________________________________________________________________________ Article info : Submitted on February 2012 Published on October 2012 Key words : Eddy currents, non dedicated to the eddy current imaging of sub-millimetric surface breaking defects appearing in bore holes

  19. Finite element methods for 3D eddy current prob-lems in bounded domains subject to realistic

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    Finite element methods for 3D eddy current prob- lems in bounded domains subject to realistic techniques to approximate eddy current prob- lems. The focus of the article is on the analysis of weak]), magnetostatics ([59, 60, 80, 81, 109, 110, 114]), eddy current ([1, 2, 3, 6, 7, 8, 9, 19, 20, 21, 23, 24, 25, 26

  20. Vacuum Induction Melting Unit Induction heating is a process wherein induced eddy currents heat conductive materials. This heating

    E-Print Network [OSTI]

    Subramaniam, Anandh

    Vacuum Induction Melting Unit Induction heating is a process wherein induced eddy currents heat field and circulating eddy currents are induced within the metals. Flow of eddy currents leads an AC current through a water cooled copper coil and a metallic charge is placed in a ceramic (or

  1. Eddy-current probe impedance due to a volumetric flaw J. R. Bowler and S. A. Jenkins

    E-Print Network [OSTI]

    Bowler, John R.

    Eddy-current probe impedance due to a volumetric flaw J. R. Bowler and S. A. Jenkins University 25 January 1991) Eddy current induced in a metal by a coil carrying an alternating current may, or inclusions. In eddy-current nondestructive evaluation, defectsare commonly sensedby a change of the coil

  2. STUDY FOR THE DESIGN OF AN EDDY CURRENT ARRAY PROBE FOR THE IMAGING OF AERONAUTICAL FASTENER HOLES

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    STUDY FOR THE DESIGN OF AN EDDY CURRENT ARRAY PROBE FOR THE IMAGING OF AERONAUTICAL FASTENER HOLES Wilson, 94230 Cachan France (joubert@satie.ens-cachan.fr) Abstract: The design of an eddy current imaging, eddy currents, imaging probe, finite element modelling, pickup coil array, printed-circuit- board coil

  3. Two-dimensional calculation of eddy currents on external conducting walls induced by low-n external modes

    E-Print Network [OSTI]

    Two-dimensional calculation of eddy currents on external conducting walls induced by low-n external 1997; accepted 8 December 1997 The results of two-dimensional calculations of eddy currents induced on external conducting walls surrounding a tokamak are reported. The computed eddy currents are generated

  4. NDT&E International 40 (2007) 555565 Lift-off effect in high-frequency eddy current conductivity spectroscopy

    E-Print Network [OSTI]

    Nagy, Peter B.

    2007-01-01T23:59:59.000Z

    NDT&E International 40 (2007) 555565 Lift-off effect in high-frequency eddy current conductivity online 12 June 2007 Abstract Precision eddy current measurements have been shown to be capable, the eddy current inspection frequency has to be as high as 5080 MHz. Unfortunately, spurious self

  5. Eddy current residual stress profiling in surface-treated engine alloys Bassam A. Abu-Nabaha1

    E-Print Network [OSTI]

    Nagy, Peter B.

    Eddy current residual stress profiling in surface-treated engine alloys Bassam A. Abu-Nabaha1 version received 3 June 2008 ) Recent research results indicate that eddy current conductivity profile is calculated from the measured frequency-dependent apparent eddy current conductivity spectrum

  6. MUSIC-TYPE ALGORITHM FOR EDDY-CURRENT NONDESTRUC-TIVE EVALUATION OF SMALL DEFECTS IN METAL PLATES

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    MUSIC-TYPE ALGORITHM FOR EDDY-CURRENT NONDESTRUC- TIVE EVALUATION OF SMALL DEFECTS IN METAL PLATES Eddy-Current nondestructive evaluation of metal plates is of interest in a wide range of applications in the lower frequency band (kHz) for eddy-current testing, to retrieve small void defects inside a conducting

  7. 1st World Congress on Industrial Process Tomography, Buxton, Greater Manchester 1417 April 1999. Eddy Current Tomography for Metal

    E-Print Network [OSTI]

    Hua, Yingbo

    . 451 Eddy Current Tomography for Metal Solidification Imaging Minh H. Pham* , Yingbo Hua* , Neil B of molten metal inside a pipe by eddy currents. A complete mathematical model is developed which reveals functions in multiple layered media. Keywords: eddy current tomography, electromagnetic field, numerical

  8. 746 IEEE TRANSACTIONS ON MAGNETICS, VOL. 36, NO. 4, JULY 2000 Solving 3D Eddy Current Problems Using Second

    E-Print Network [OSTI]

    Ida, Nathan

    746 IEEE TRANSACTIONS ON MAGNETICS, VOL. 36, NO. 4, JULY 2000 Solving 3D Eddy Current ProblemsD eddy current prob- lems. The asymmetry of the facet related functions in the edge el- ement basis- ments is compared through an example. Index Terms--Eddy currents, finite element modeling, second order

  9. ccsd-00085042,version1-11Jul2006 A Two-dimensional eddy current model using thin

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    ccsd-00085042,version1-11Jul2006 A Two-dimensional eddy current model using thin inductors Youcef a mathematical model for eddy currents in two dimensional geometries where the conductors are thin domains. We Mathematical modelling of eddy current problems often involves multiple conductors with various sizes

  10. web page: http://w3.pppl.gov/~ zakharov Equilibrium reconstruction in eddy current environment in tokamaks 1

    E-Print Network [OSTI]

    Zakharov, Leonid E.

    web page: http://w3.pppl.gov/~ zakharov Equilibrium reconstruction in eddy current environment and small size tokamaks the eddy currents in the passive structures affect both the interpretation the time history of the discharge and sig nals, mitigates uncertainties associated with the eddy currents

  11. Barotropic Impacts of Surface Friction on Eddy Kinetic Energy and Momentum Fluxes: An Alternative to the Barotropic Governor

    E-Print Network [OSTI]

    Garfinkel, Chaim I.

    Barotropic Impacts of Surface Friction on Eddy Kinetic Energy and Momentum Fluxes: An Alternative energy decreases, a response that is inconsistent with the conventional barotropic governor mechanism on eddy momentum fluxes and eddy kinetic energy. Analysis of the pseudomomentum budget shows

  12. Anatomy and evolution of a cyclonic mesoscale eddy observed in the northeastern Pacific tropical-subtropical transition zone

    E-Print Network [OSTI]

    Anatomy and evolution of a cyclonic mesoscale eddy observed in the northeastern Pacific tropical and evolution of a cyclonic mesoscale eddy observed in the northeastern Pacific tropical-subtropical transition zone, J. Geophys. Res. Oceans, 118, doi:10.1002/ 2013JC009339. 1. Introduction [2] Mesoscale eddy

  13. Mesoscale Eddy Energy Locality in an Idealized Ocean Model IAN GROOMS, LOUIS-PHILIPPE NADEAU, AND K. SHAFER SMITH

    E-Print Network [OSTI]

    Smith, K. Shafer

    Mesoscale Eddy Energy Locality in an Idealized Ocean Model IAN GROOMS, LOUIS-PHILIPPE NADEAU, AND K investigates the energy budget of mesoscale eddies in wind-driven two-layer quasigeostrophic simulations of eddy energy are ``nonlocal.'' Many mesoscale parameterizations assume that statistics of the unresolved

  14. Segmentation and Tracking of Mesoscale Eddies in Numeric Ocean Models Vishal Sood, Bin John, Ramprasad Balasubramanian and Amit Tandon*

    E-Print Network [OSTI]

    Tandon, Amit

    Segmentation and Tracking of Mesoscale Eddies in Numeric Ocean Models Vishal Sood, Bin John suggested that the mesoscale eddies and mesoscale features play a strong role in carrying heat poleward oceanographers an invaluable tool to assess mesoscale eddies and the Lagrangian characteristics of this mesoscale

  15. Dr. Richard A. Meserve | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian NuclearandJunetrack graphics4Dimitri Kusnezov -Purpose TheDougDr.Dr.

  16. Dr. Ernest Moniz | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal Register / Vol. 73, No. 219Does Your City HaveDr.Ellen WilliamsDr.

  17. Dr. Ranga Pitchumani | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal Register / Vol. 73, No. 219Does Your CityDr. Monica C.Dr. Ranga

  18. Dr. Dewey Holten | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. Daniel A.Devens GustDr.

  19. Dr. Himadri Pakrasi | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. DanielDr. Himadri Pakrasi

  20. Dr. Jan Jaworski | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. DanielDr. HimadriTJamesJan

  1. Dr. Joseph Cullen | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. DanielDr.

  2. Dr. Robert Blankenship | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday, April 15,Dr.Robert

  3. Red Means Go Information Technology

    E-Print Network [OSTI]

    Projects Budget Issues #12;Red Means Go Strategic Operations Plan (SOP) Articulate the OIT vision, planning, and other business functions Scope: Project will impact university data users (executive Means Go Directions and Opportunities for OIT Three Phase Plan for IT Improvement Develop Strategic

  4. EA-1692: Red River Environmental Products, LLC Activated Carbon...

    Office of Environmental Management (EM)

    2: Red River Environmental Products, LLC Activated Carbon Manufacturing Facility, Red River Parish, LA EA-1692: Red River Environmental Products, LLC Activated Carbon Manufacturing...

  5. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Eddy current sensing of vertical Bridgman semiconductor crystal growth

    E-Print Network [OSTI]

    Wadley, Haydn

    permission. Eddy current sensing of vertical Bridgman semiconductor crystal growth Dharmasena, Kumar Pradeepa

  6. Influences of the Juan de Fuca Eddy on circulation, nutrients, and phytoplankton1 production in the northern California Current System2

    E-Print Network [OSTI]

    Hickey, Barbara

    Current. Results from three years of field studies5 demonstrate that the eddy increases in spatial extent-driven currents in the surface Ekman12 layer cause the eddy to be "leaky" on its southern perimeter. Eddy surfaceInfluences of the Juan de Fuca Eddy on circulation, nutrients, and phytoplankton1 production

  7. Inverse Problems 16 (2000) 469482. Printed in the UK PII: S0266-5611(00)04847-4 Imaging the solidification of molten metal by eddy currents: I

    E-Print Network [OSTI]

    Hua, Yingbo

    2000-01-01T23:59:59.000Z

    the solidification of molten metal by eddy currents: I Minh H Pham, Yingbo Hua and Neil B Gray The Department@ee.mu.oz.au Received 27 May 1999, in final form 20 December 1999 Abstract. This paper presents an eddy-current for this imaging task other than that of eddy currents. The eddy-current technique is a nondestructive technique

  8. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Eddy current sensing of cadmium zinc telluride crystal growth

    E-Print Network [OSTI]

    Wadley, Haydn

    permission. Eddy current sensing of cadmium zinc telluride crystal growth Choi, Byoung-Woo William Pro

  9. Interannual variability of summer biochemical enhancement in relation to mesoscale eddies at the shelf break in the vicinity of the Pribilof Islands,

    E-Print Network [OSTI]

    Interannual variability of summer biochemical enhancement in relation to mesoscale eddies the 1300-km-long eastern shelf break accompanied by a mesoscale eddy field (Okkonen, 2001a). Eddies occur., 2002). Mesoscale eddies, which penetrate to depths of at least 1000 m (Roden, 1995; Mizobata et al

  10. Eddy PV Fluxes in the Kuroshio Extension at 144o-148oE Stuart P. Bishop* and D. Randolph Wa6s#

    E-Print Network [OSTI]

    Rhode Island, University of

    km Eddy PV Fluxes in the Kuroshio Extension at 144o-148oE Stuart P A. IntroducCon D. Divergent Vs. RotaConal Eddy PV Fluxes E. Eddy Growth G. STMW ModificaCon: SchemaCc Summary C. Time-Mean PV EquaCon & Eddy PV Flux B

  11. Microsoft Word - Red Detector Tests _3_.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Red Detector Tests May 5 ed -2006 1. Black Body @ 900F, Comparison between red and blue detectors: Table 1: Detector's signal with and without filters -BB at 900F Filter(micron)...

  12. VBH-0028- In the Matter of Dr. Jiunn S. Yu

    Broader source: Energy.gov [DOE]

    This decision considers a Complaint filed by Dr. Jiunn S. Yu (Dr. Yu) against the Sandia Corporation (Sandia) under the Department of Energy's (DOE) Contractor Employee Protection Program, which is...

  13. Acting Biomass Program Manager Dr. Valerie Reed to Host Live...

    Broader source: Energy.gov (indexed) [DOE]

    December 16th, the Energy Department (@energy) will be hosting a live Twitter Q&A on biofuels with Dr. Valerie Reed, Acting Manager of the Biomass Program. Dr. Reed holds a Ph. D....

  14. Transmission Dr. Sandra Cruz-Pol

    E-Print Network [OSTI]

    Cruz-Pol, Sandra L.

    Transmission Lines Dr. Sandra Cruz-Pol ECE Dept. UPRM Exercise 11.3 n A 40-m long TL has Vg=15 Vrms to electric circuits! cmc kmc GHz Hz 15000,000,2000/ 000,560/ 2 60 == == Transmission Lines I. TL parameters-wave transformer ¨ Slotted line ¨ Single stub VI. Microstrips Transmission Lines (TL) n TL have two conductors

  15. THE SOLAR WIND PLASMA Dr. Joe Borovsky

    E-Print Network [OSTI]

    Shyy, Wei

    involved multidipole plasma devices. Current research interests focus on structure in the solar wind THE SOLAR WIND PLASMA Dr. Joe Borovsky Los Alamos National Laboratory and University, magnetized, collisionless plasma, important for the geomagnetic activity that it drives at Earth and for its

  16. Syllabus Fall 2011 Instructor: Dr. Ginny Catania

    E-Print Network [OSTI]

    Catania, Ginny

    Glaciology Syllabus Fall 2011 Instructor: Dr. Ginny Catania Office Location: EPS 3.128, gcatania@ig.utexas.edu Office Hours: Tuesdays 1-2pm, or by appointment Class Times/Location: T & Th: 11-12:30pm EPS 1

  17. Prof.Dr.Siegfried Bocherer Vorlesungsankundigung

    E-Print Network [OSTI]

    Mannheim, Universität

    Prof.Dr.Siegfried B¨ocherer Vorlesungsank¨undigung WS 2006 ALGEBRA Wie die LINEARE ALGEBRA aus dem Studium linearer Gleichungssysteme hervorgegangen ist, so kann auch die ALGEBRA angesehen werden als struk- ometrischer Konstruktionen mittels Zirkel und Lineal (Dreiteilung des Winkels, Kostruktion des regul¨aren n

  18. Prof.Dr.Siegfried Bocherer Vorlesungsankundigung

    E-Print Network [OSTI]

    Mannheim, Universität

    Prof.Dr.Siegfried B¨ocherer Vorlesungsank¨undigung HS 2011 ALGEBRA (Vorlesung mit ¨Ubung) Wie die LINEARE ALGEBRA aus dem Studium linearer Gleichungssysteme hervorgegangen ist, so kann auch die ALGEBRA¨oglichkeit gewisser geo- metrischer Konstruktionen mittels Zirkel und Lineal (Dreiteilung des Winkels, Konstruktion

  19. Decommissioning of DR 1 Final report

    E-Print Network [OSTI]

    and lessons learned 43 9 Clearance of materials, building and surrounding area 44 9.1 Clearance criteria 44 9Decommissioning of DR 1 Final report DD-18(EN) rev.1 Document approved by the nuclear regulatory authorities Danish Decommissioning, Roskilde January 2006 #12;Author: Kurt Lauridsen Title: Decommissioning

  20. Dr. Walter F. Jones Executive Director

    E-Print Network [OSTI]

    Force systems. These systems include space, weapons, aeronautics, and command, control, communications and managing the processes that defined AFRL's $3-billion annual investment in technologies for future Air for Science and Technology with the Office of the National Security Space Architect. In addition, Dr. Jones

  1. PERSONAL DATA (IT0002) Mr. Miss Dr.

    E-Print Network [OSTI]

    Tennessee, University of

    Update PERSONAL DATA (IT0002) Mr. Miss Dr. Gender Male Female State Complete Information No Address OF TENNESSEE PERSONAL DATA FORM Personnel # PERMANENT RESIDENCE (IT0006-Subtype 1) Form of Address: New Ms Code PDF Rev. 03/20/2008 Page 1 of 2 #12;ADDITIONAL PERSONAL DATA (IT0077) Yes Yes No Employee

  2. Dept. of Mechanical Engineering 1500 Engineering Dr.

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Dept. of Mechanical Engineering 1500 Engineering Dr. University of Wisconsin ­ Madison Madison, WI. of Mechanical Engineering 2008 ­ Present Director of Engine Research Center 2003 ­ 2007 Associate Professor ­ 1995 Research Assistant Stanford University, Stanford, CA 1984 ­ 1989 Research Engineer Flow Research

  3. Dr. Thad M. Adams Materials Technology Section

    E-Print Network [OSTI]

    Dr. Thad M. Adams Materials Technology Section Savannah River National Laboratory DOE Hydrogen extraction/handling/separation/storage operations Applied R&D provided by Savannah River National for Hydrogen Service #12;Hydrogen Technology at the SavannahHydrogen Technology at the Savannah River SiteRiver

  4. Updated 10-13 Dr. Adam Razavian

    E-Print Network [OSTI]

    and Electronic Warfare major programs for the Surface Navy. Adam Razavian graduated from the UniversityUpdated 10-13 Dr. Adam Razavian TECHNICAL DIRECTOR, NAVAL SURFACE WARFARE CENTER, CRANE DIVISION assignment at Navy headquarters in 1998, serving as a Project Manager, he served as the Electronics Design

  5. Economics in Film Professors: Dr. Naphtali Hoffman

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    Economics in Film Professors: Dr. Naphtali Hoffman Office:LT 912 Office Phone: (607) 735: This course is designed to achieve two goals: The first is to introduce students to economic problems, debates, and ideas. The second is to develop critical thinking skill by applying what you know of economics

  6. Dr. James F. Booker Professor of Economics

    E-Print Network [OSTI]

    Dr. James F. Booker Professor of Economics Siena College Economics Department voice: 518.siena.edu/booker Home: 19 Lincoln Ave, Delmar, NY 12054 Professional Experience Professor of Economics. Department of Economics, Siena College. Douglas T. Hickey Professor of Business 2002-04; Associate Professor 2002

  7. Beer and Economic Growth Dr. Martin Shields

    E-Print Network [OSTI]

    Beer and Economic Growth Dr. Martin Shields Regional Economics Institute Colorado State University to the rest of the world #12;Industry Trends Over the past 10 years, the growth in craft beer has significantly altered the industry While overall beer sales are relatively flat, market share of craft brewers

  8. Permanent Edinburgh scientists include: Dr. Andrew Curtis

    E-Print Network [OSTI]

    Haszeldine, Stuart

    Research, the strongest team in Europe Expertise Seismic Acquisition Processing & Interpretation 4D Time. of Seismic Anisotropy Prof. John Underhill Prof. of Stratigraphy Prof. Ian Main Prof. of Rock Physics Dr. Roger Scrutton Reader of Marine & Applied Geophysics Edinburgh, a Seismic City Your Seismic

  9. Conservation Ecology & Entomology Department Dr James Pryke

    E-Print Network [OSTI]

    Geldenhuys, Jaco

    Conservation Ecology & Entomology Department Dr James Pryke My academic career began with an MSc on landscape ecology issues. After receiving my PhD, I undertook a two month fellowship at the Universiti. This position primarily involved conducting research into improving the design and management of ecological

  10. Prof. Bob Critoph Dr. Steven Metcalf

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    design Two-bed air-source compact heat pump system proven in the laboratory Plate heat exchangerProf. Bob Critoph Dr. Steven Metcalf Development of a carbon-ammonia adsorption gas heat pump IEA Heat Pump Workshop, London, 13th November, 2012 #12;Contents: Background Concept design Technical

  11. Climate Change and Tourism Dr David Viner

    E-Print Network [OSTI]

    Feigon, Brooke

    Climate Change and Tourism CLAT Dr David Viner Climatic Research Unit University of East Anglia d.viner@uea.ac.uk Tourism has a strong international dimension and is sensitive to any changes of climate that alter to attract visitors are likely to be vulnerable to climate change and the implementation of climate change

  12. Modern Physics Laboratory Dr. James E. Parks

    E-Print Network [OSTI]

    Dai, Pengcheng

    Modern Physics Laboratory Dr. James E. Parks Director of Undergraduate Laboratories Physics 461 students. It provides hands-on experience with experiments in modern physics that are challenging courses, reference material and by asking questions. #12;C:\\Users\\JEParks\\Documents\\Modern Physics Lab

  13. Modern Physics Laboratory Dr. James E. Parks

    E-Print Network [OSTI]

    Dai, Pengcheng

    Modern Physics Laboratory Dr. James E. Parks Director of Undergraduate Laboratories Physics 461 students. It provides hands-on experience with experiments in modern physics that are challenging are in two categories. The first category, Category I, consists of the modern physics experiments

  14. Dr N.W Bressloff Computational Engineering

    E-Print Network [OSTI]

    Sóbester, András

    C E D C C E D C C E D C Dr N.W Bressloff Computational Engineering and Design Centre University component of heat transfer in a range of combustion systems. But the complexity of thermal radiation demands high computational cost when included in the simulation of combusting flows. Therefore, parallelisation

  15. IE 361 Mini Paper Dr. Vardeman

    E-Print Network [OSTI]

    Vardeman, Stephen B.

    certificate that identifies your quality system as being in compliance with ISO 9001, 9002, or 9003. YourIE 361 Mini Paper Fall 2000 ISO 9000 Dr. Vardeman Conducted by: Wempie Kumala Vera Oh Ai-Sze Chiam 9-22-00 #12;Introduction ISO is sometimes referred to as International Organization

  16. WRITTEN TESTIMONY OF DR. JAMES S. FAMIGLIETTI

    E-Print Network [OSTI]

    George, Steven C.

    offer the following testimony. INTRODUCTION Groundwater -- the water stored beneath the land surfaceWRITTEN TESTIMONY OF DR. JAMES S. FAMIGLIETTI DIRECTOR, UC CENTER FOR HYDROLOGIC MODELING PROFESSOR groundwater resources. My name is James Famiglietti. I am a hydrologist and Professor on the faculty

  17. WRITTEN STATEMENT OF DR. LARRY ROBINSON

    E-Print Network [OSTI]

    .S. DEPARTMENT OF COMMERCE HEARING ON THE USE OF DISPERSANT FOR THE BP DEEPWATER HORIZON OIL SPILL BEFORE in the Deepwater Horizon BP oil spill response and the use of dispersants. My name is Dr. Larry Robinson and I am Horizon oil spill, for which BP is a responsible party; NOAA's role in use of dispersants

  18. WRITTEN STATEMENT OF DR. LARRY ROBINSON

    E-Print Network [OSTI]

    's) role in the response to the Deepwater Horizon oil spill. My name is Dr. Larry Robinson and I am Horizon oil spill. NOAA is fully mobilized and working tirelessly 24/7 to lessen impacts on the Gulf Coast NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION U.S. DEPARTMENT OF COMMERCE HEARING ON COMBATING THE BP OIL

  19. CURRICULUM VITAE Dr. Dale S. Rogers

    E-Print Network [OSTI]

    Lin, Xiaodong

    Administration (1983) Michigan State University Major: Materials and Logistics Management Bachelor of Arts (19791 CURRICULUM VITAE Dr. Dale S. Rogers Rutgers University Supply Chain Management & Marketing Professor of Logistics and Supply Chain Management, Co-Director of the Center for Supply Chain Management

  20. Calculation of Eddy Currents In the CTH Vacuum Vessel and Coil Frame

    SciTech Connect (OSTI)

    A. Zolfaghari, A. Brooks, A. Michaels, J. Hanson, and G. Hartwell

    2012-09-25T23:59:59.000Z

    Knowledge of eddy currents in the vacuum vessel walls and nearby conducting support structures can significantly contribute to the accuracy of Magnetohydrodynamics (MHD) equilibrium reconstruction in toroidal plasmas. Moreover, the magnetic fields produced by the eddy currents could generate error fields that may give rise to islands at rational surfaces or cause field lines to become chaotic. In the Compact Toroidal Hybrid (CTH) device (R0 = 0.75 m, a = 0.29 m, B ? 0.7 T), the primary driver of the eddy currents during the plasma discharge is the changing flux of the ohmic heating transformer. Electromagnetic simulations are used to calculate eddy current paths and profile in the vacuum vessel and in the coil frame pieces with known time dependent currents in the ohmic heating coils. MAXWELL and SPARK codes were used for the Electromagnetic modeling and simulation. MAXWELL code was used for detailed 3D finite-element analysis of the eddy currents in the structures. SPARK code was used to calculate the eddy currents in the structures as modeled with shell/surface elements, with each element representing a current loop. In both cases current filaments representing the eddy currents were prepared for input into VMEC code for MHD equilibrium reconstruction of the plasma discharge. __________________________________________________

  1. 10 Questions for a Scientist: Dr. Ryan Wiser

    Office of Energy Efficiency and Renewable Energy (EERE)

    Learn about Dr. Ryan Wiser's work to develops new areas of research on topics of enormous social consequence.

  2. Dr. Anders Hansen, University of Cambridge, Homerton College ...

    E-Print Network [OSTI]

    2011-11-29T23:59:59.000Z

    Dec 1, 2011 ... PURDUE UNIVERSITY. Special Colloquium. Speaker: Dr. Anders Hansen, University of Cambridge, Homerton College. Title: Generalized...

  3. Dr. T.P. Clement CE 3010 class notes

    E-Print Network [OSTI]

    Clement, Prabhakar

    8/15/2011 1 Dr. T.P. Clement CE 3010 class notes Learning Objectives Motivation Basic approach value of the definite integral 2 b a dxxf )( Dr. T.P. Clement CE 3010 class notes Analytical (or exact a dxxf )( Dr. T.P. Clement CE 3010 class notes Trapezoidal Rule F(x) #12;8/15/2011 2 Dr. T.P. Clement CE

  4. USDOE's Dr. Martin Luther King, Jr. Commemorative Program

    ScienceCinema (OSTI)

    Secretary Steven Chu; Deputy Secretary Daniel Poneman; Dot Harris; Congressman John Lewis; Clay Middleton; Neile Miller

    2013-02-14T23:59:59.000Z

    Video presentation of the Department of Energy?s 2013 commemorative program honoring Dr. Martin Luther King, Jr.

  5. Curriculum Vitae Signe Kjelstrup, Prof. Dr.techn. et dr. ing.

    E-Print Network [OSTI]

    Kjelstrup, Signe

    , 1971, Grade reported to the King of Norway. Lic.techn. NTH, 1974. Thesis: Complex formations in Alkali-Aluminium Fluoride Melts. Passed with distinction. Dr.techn. NTH, 1982. Thesis: On the Energetics of Coupled

  6. PD Dr. Martin Stetter, Siemens AG 1 Das lineare Modell

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Das lineare Modell Ausgangspunkt: Lineares Perceptron vorgegeben, werden nicht gelernt #12;PD Dr. Martin Stetter, Siemens AG 2 Geschrieben als Regressionsmodell Regression: Lineares Modell #12;PD Dr. Martin Stetter, Siemens AG 3 ML-Parameterschtzung des linearen

  7. Dr. T.P. Clement CE 3010 class notes

    E-Print Network [OSTI]

    Clement, Prabhakar

    1 Dr. T.P. Clement CE 3010 class notes Quotes Genius is 1 percent inspiration and 99 percent in little things. Excellence is not an exception, it is a prevailing attitude Colin Powell 1 Dr. T.P Combining conditions Loops Examples 2 Dr. T.P. Clement CE 3010 class notes Program to Find Real Roots

  8. RESONANT FREQUENCY EDDY CURRENT LIFTOFF MEASUREMENTS FOR SHOT PEENING INTENSITY ASSESSMENT IN MATERIALS

    SciTech Connect (OSTI)

    Ko, Ray T.; Blodgett, Mark P. [Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433 (United States); Sathish, Shamachary; Boehnlein, Thomas R. [Structural Integrity Division, University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0120 (United States)

    2008-02-28T23:59:59.000Z

    The shot peening intensity of nickel base materials has been examined with an innovative eddy current measurement. The goal is to provide a nondestructive tool to quantitatively evaluate the surface conditions after shot peening. Traditionally, the residual stress caused by the shot peening process can be examined by X-ray diffraction. Recent eddy current works have shown promising results in evaluating the small conductivity variation due to the residual stress. This study explores the feasibility of utilizing the cable which connects to a network analyzer and a conventional eddy current probe to monitor the surface conditions due to the shot peening.

  9. Nr. 210 / 2014 // 4. Nov. 2014 Von re.: Dr. Markus Zanner, Kanzler der Universitt Bayreuth; Prof. Dr. Stefan Leible, Prsident

    E-Print Network [OSTI]

    Ott, Albrecht

    S. 1/ 5 Nr. 210 / 2014 // 4. Nov. 2014 Von re.: Dr. Markus Zanner, Kanzler der Universität Bayreuth Prof. Dr. Stefan Leible, dem Kanzler der Universi- tät Dr. Markus Zanner und dem Vorsitzenden des zu können", erklärt Dr. Markus Zanner. ,,Die Gespräche mit der MeinFernbus GmbH sind immer kooperativ

  10. Surface Characterization of Stainless Steel Part by Eddy Current

    SciTech Connect (OSTI)

    Andersen, Eric S.; Hockey, Ronald L.; Prince, James M.; Good, Morris S.

    2003-10-01T23:59:59.000Z

    The Pacific Northwest National Laboratory (PNNL) has nearly a 40 year history of research and development in the field of nondestructive evaluation (NDE). One area of NDE expertise at PNNL is electromagnetic testing which includes a field of eddy current testing (ET). One benefit is that ET can typically be performed at high speeds, and as a result has found many applications in process monitoring and poduction lines. ET has been used in the nuclear, aerospace, and automotive industries for many years. Et technology lends itself well to the detection of near-surface or surface breaking defects such as surface scratches. This paper provides an overview of theory regarding the usage of ET, selected application studies performed by PNNL, a safety analysis, and a wrtie up pertaining to the operations of ET to detect surface scratches.

  11. Workshops and problems for benchmarking eddy current codes

    SciTech Connect (OSTI)

    Turner, L.R.; Davey, K.; Ida, N.; Rodger, D.; Kameari, A.; Bossavit, A.; Emson, C.R.I.

    1988-08-01T23:59:59.000Z

    A series of six workshops was held in 1986 and 1987 to compare eddy current codes, using six benchmark problems. The problems included transient and steady-state ac magnetic fields, close and far boundary conditions, magnetic and non-magnetic materials. All the problems were based either on experiments or on geometries that can be solved analytically. The workshops and solutions to the problems are described. Results show that many different methods and formulations give satisfactory solutions, and that in many cases reduced dimensionality or coarse discretization can give acceptable results while reducing the computer time required. A second two-year series of TEAM (Testing Electromagnetic Analysis Methods) workshops, using six more problems, is underway. 12 refs., 15 figs., 4 tabs.

  12. Computer programs for eddy-current defect studies

    SciTech Connect (OSTI)

    Pate, J. R.; Dodd, C. V. [Oak Ridge National Lab., TN (USA)

    1990-06-01T23:59:59.000Z

    Several computer programs to aid in the design of eddy-current tests and probes have been written. The programs, written in Fortran, deal in various ways with the response to defects exhibited by four types of probes: the pancake probe, the reflection probe, the circumferential boreside probe, and the circumferential encircling probe. Programs are included which calculate the impedance or voltage change in a coil due to a defect, which calculate and plot the defect sensitivity factor of a coil, and which invert calculated or experimental readings to obtain the size of a defect. The theory upon which the programs are based is the Burrows point defect theory, and thus the calculations of the programs will be more accurate for small defects. 6 refs., 21 figs.

  13. Implicit Large Eddy Simulation of Cavitation in Micro Channel Flows

    E-Print Network [OSTI]

    Hickel, S; Schmidt, S J

    2014-01-01T23:59:59.000Z

    We present a numerical method for Large Eddy Simulations (LES) of compressible two-phase flows. The method is validated for the flow in a micro channel with a step-like restriction. This setup is representative for typical cavitating multi-phase flows in fuel injectors and follows an experimental study of Iben et al., 2010. While a diesel-like test fuel was used in the experiment, we solve the compressible Navier-Stokes equations with a barotropic equation of state for water and vapor and a simple phase-change model based on equilibrium assumptions. Our LES resolve all wave dynamics in the compressible fluid and the turbulence production in shear layers.

  14. Red Rice Research and Control.

    E-Print Network [OSTI]

    Baker, John B.; Baldwin, Ford L.; Bourgeois, W.J.; Cox, Clodis H.; Craigmiles, Julian P.; Dishman, William D.; Eastin, E. Ford; Helpert, Charles W.; Hill, Lewis C.; Huey, Bobby A.; Klosterboer, Arlen D.; Sonnier, Earl A.

    1980-01-01T23:59:59.000Z

    -to-date information available on a subject of major concern to rice producers. E. F. Eastin, editor The Texas Agricultural Experiment Station Beaumont INTRODUCTION J. P. Craigmiles The purpose of t h i s red r i c e symposium i s straightforward and simple... - t o discuss the l a t e s t f indings and procedures f o r con t ro l l ing red r i c e . In accom- pl ishing t h i s we want two-way communication s o t h a t all present w i l l become current on t h i s most noxious weed of r i c e...

  15. Multiscale eddy simulation for moist atmospheric convection: Preliminary investigation

    SciTech Connect (OSTI)

    Stechmann, Samuel N., E-mail: stechmann@wisc.edu [Department of Mathematics, University of Wisconsin-Madison (United States); Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison (United States)

    2014-08-15T23:59:59.000Z

    A multiscale computational framework is designed for simulating atmospheric convection and clouds. In this multiscale framework, large eddy simulation (LES) is used to model the coarse scales of 100 m and larger, and a stochastic, one-dimensional turbulence (ODT) model is used to represent the fine scales of 100 m and smaller. Coupled and evolving together, these two components provide a multiscale eddy simulation (MES). Through its fine-scale turbulence and moist thermodynamics, MES allows coarse grid cells to be partially cloudy and to encompass cloudyclear air mixing on scales down to 1 m; in contrast, in typical LES such fine-scale processes are not represented or are parameterized using bulk deterministic closures. To illustrate MES and investigate its multiscale dynamics, a shallow cumulus cloud field is simulated. The fine-scale variability is seen to take a plausible form, with partially cloudy grid cells prominent near cloud edges and cloud top. From earlier theoretical work, this mixing of cloudy and clear air is believed to have an important impact on buoyancy. However, contrary to expectations based on earlier theoretical studies, the mean statistics of the bulk cloud field are essentially the same in MES and LES; possible reasons for this are discussed, including possible limitations in the present formulation of MES. One difference between LES and MES is seen in the coarse-scale turbulent kinetic energy, which appears to grow slowly in time due to incoherent stochastic fluctuations in the buoyancy. This and other considerations suggest the need for some type of spatial and/or temporal filtering to attenuate undersampling of the stochastic fine-scale processes.

  16. Large-Eddy Simulation of Flow and Pollutant Transport in Urban Street Canyons with Ground Heating

    E-Print Network [OSTI]

    Li, Xian-Xiang

    Our study employed large-eddy simulation (LES) based on a one-equation subgrid-scale model to investigate the flow field and pollutant dispersion characteristics inside urban street canyons. Unstable thermal stratification ...

  17. MEASUREMENTS AND MODELING OF EDDY CURRENT EFFECTS IN BNL'S AGS BOOSTER.

    SciTech Connect (OSTI)

    BROWN, K.A.; AHRENS, L.; GARDNER, C.; GLENN, J.W.; HARVEY, M.; MENG, W.; ZENO, K.

    2006-06-23T23:59:59.000Z

    Recent beam experiments at BNL's AGS Booster have enabled us to study in more detail the effects of eddy currents on the lattice structure and our control over the betatron tune. The Booster is capable of operating at ramp rates as high as 9 T/sec. At these ramp rates eddy currents in the vacuum chambers significantly alter the fields and gradients seen by the beam as it is accelerated. The Booster was designed with these effects in mind and to help control the field uniformity and linearity in the Booster Dipoles special vacuum chambers were designed with current windings to negate the affect of the induced eddy currents. In this report results from betatron tune measurements and eddy current simulations will be presented. We will then present results from modeling the accelerator using the results of the magnetic field simulations and compare these to the measurements.

  18. Eddy covariance flux measurements of pollutant gases in urban Mexico City

    E-Print Network [OSTI]

    Velasco, Erik

    Eddy covariance (EC) flux measurements of the atmosphere/surface exchange of gases over an urban area are a direct way to improve and evaluate emissions inventories, and, in turn, to better understand urban atmospheric ...

  19. Evidence for Enhanced Eddy Mixing at Middepth in the Southern Ocean K. SHAFER SMITH

    E-Print Network [OSTI]

    Marshall, John

    Evidence for Enhanced Eddy Mixing at Middepth in the Southern Ocean K. SHAFER SMITH Center; Robinson and McWilliams 1974; Stammer 1997; Smith 2007), extracting their energy from the stores

  20. Understanding the Regional Variability of Eddy Diffusivity in the Pacific Sector of the Southern Ocean

    E-Print Network [OSTI]

    Shuckburgh, Emily

    A diagnostic framework is presented, based on the Nakamura effective diffusivity, to investigate the regional variation in eddy diffusivity. Comparison of three different diffusivity calculations enables the effects of ...

  1. A comparison of eddy current effects in a single sided magnetic thrust bearing

    E-Print Network [OSTI]

    DeWeese, Randall Thomas

    1996-01-01T23:59:59.000Z

    finite element studies of magnetic thrust bearings using static bench testing procedures to investigate configurations that promote eddy current reduction. Several rotor/stator configurations, including solid metal, laminated washers, tapewound lam...

  2. Calculation of unsteady turbulent flow around obstacles using the large eddy simulation turbulence model

    E-Print Network [OSTI]

    Helton, Donald McLean

    2002-01-01T23:59:59.000Z

    The premise of the work presented here is to use a common analytical tool, Computational Fluid Dynamics (CFD), along with a prevalent turbulence model, Large Eddy Simulation (LES), to study the flow past rectangular cylinders. In an attempt to use...

  3. Subduction in an eddy-resolving state estimate of the northeast Atlantic Ocean

    E-Print Network [OSTI]

    Gebbie, Geoffrey Alexander, 1975-

    2004-01-01T23:59:59.000Z

    Relatively little is known about the role of eddies in controlling subduction in the eastern half of the subtropical gyre. Here, a new tool to study the eastern North Atlantic Ocean is created by combining a regional, ...

  4. Microsoft Word - CX-Big Eddy-Redmond-WoodPolesFY13_WEB.doc

    Broader source: Energy.gov (indexed) [DOE]

    4, 2013 REPLY TO ATTN OF: KEPR-4 SUBJECT: Environmental Clearance Memorandum Richard Heredia Project Manager - TEP-TPP-1 Proposed Action: Big Eddy-Redmond No. 1 Wood Pole...

  5. Lagrangian study of transport and mixing in a mesoscale eddy street

    E-Print Network [OSTI]

    Prants, S V; Ponomarev, V I; Uleysky, M Yu; 10.1016/j.ocemod.2011.02.008

    2012-01-01T23:59:59.000Z

    We use dynamical systems approach and Lagrangian tools to study surface transport and mixing of water masses in a selected coastal region of the Japan Sea with moving mesoscale eddies associated with the Primorskoye Current. Lagrangian trajectories are computed for a large number of particles in an interpolated velocity field generated by a numerical regional multi-layer eddy-resolving circulation model. We compute finite-time Lyapunov exponents for a comparatively long period of time by the method developed and plot the Lyapunov synoptic map quantifying surface transport and mixing in that region. This map uncovers the striking flow structures along the coast with a mesoscale eddy street and repelling material lines. We propose new Lagrangian diagnostic tools --- the time of exit of particles off a selected box, the number of changes of the sign of zonal and meridional velocities --- to study transport and mixing by a pair of strongly interacting eddies often visible at sea-surface temperature satellite imag...

  6. Enhancement of Mesoscale Eddy Stirring at Steering Levels in the Southern Ocean

    E-Print Network [OSTI]

    Marshall, John C.

    Meridional cross sections of effective diffusivity in the Southern Ocean are presented and discussed. The effective diffusivity, K[subscript eff], characterizes the rate at which mesoscale eddies stir properties on interior ...

  7. Investigation of two-fluid methods for Large Eddy Simulation of spray combustion in Gas Turbines

    E-Print Network [OSTI]

    Investigation of two-fluid methods for Large Eddy Simulation of spray combustion in Gas Turbines the EL method well suited for gas turbine computations, but RANS with the EE approach may also be found

  8. Dr. John J. Stephens, Jr., metallurgist extraordinaire.

    SciTech Connect (OSTI)

    Hosking, Floyd Michael

    2010-10-01T23:59:59.000Z

    The organizers of the Dr. John J. Stephens, Jr. Memorial Symposium: Deformation and Interfacial Phenomena in Advanced High-Temperature Materials are honoring the memory of Dr. Stephens and his many technical contributions that were accomplished over a relatively brief twenty year career. His research spanned the areas of creep and deformation of metals, dispersion-strengthened alloys and their properties, metal matrix composite materials, processing and properties of refractory metals, joining of ceramic-ceramic and metal-ceramic systems, active braze alloy development, and mechanical modeling of soldered and brazed assemblies. The purpose of this presentation is to highlight his research and engineering accomplishments, particularly during his professional career at Sandia National Laboratories in Albuquerque, NM.

  9. EDDY CURRENT INVERSION AND ESTIMATION METRICS FOR EVALUATING THERMAL BARRIER COATINGS

    SciTech Connect (OSTI)

    Sabbagh, Harold A.; Murphy, R. Kim; Sabbagh, Elias H. [Victor Technologies LLC, Bloomington, IN 47401 (United States); Knopp, Jeremy S. [Air Force Research Laboratory, Wright-Patterson AFB, OH 45433 (United States); Aldrin, John C. [Computational Tools, Gurnee, IL 60031 (United States); Nyenhuis, John [Dept. of Electric Computer Engineering, Purdue University, West Lafayette, IN (United States)

    2010-02-22T23:59:59.000Z

    In this paper, sophisticated eddy-current techniques incorporating model-based inverse methods were successfully demonstrated to measure the thickness and remaining-life of high-temperature coatings. To further assure the performance of these inverse methods, several estimation metrics including Fisher Information, Cramer-Rao Lower Bound (CRLB), covariance, and singular value decomposition (SVD) are introduced. The connections and utility of these metrics are illustrated in the design of eddy current methods for estimating layer thickness, conductivity and probe liftoff.

  10. Parametric Studies and Optimization of Eddy Current Techniques through Computer Modeling

    SciTech Connect (OSTI)

    Todorov, E. I. [EWI, Engineering and NDE, 1250 Arthur E. Adams Dr., Columbus, OH 43221-3585 (United States)

    2007-03-21T23:59:59.000Z

    The paper demonstrates the use of computer models for parametric studies and optimization of surface and subsurface eddy current techniques. The study with high-frequency probe investigates the effect of eddy current frequency and probe shape on the detectability of flaws in the steel substrate. The low-frequency sliding probe study addresses the effect of conductivity between the fastener and the hole, frequency and coil separation distance on detectability of flaws in subsurface layers.

  11. Method for removal of random noise in eddy-current testing system

    DOE Patents [OSTI]

    Levy, Arthur J. (Schenectady, NY)

    1995-01-01T23:59:59.000Z

    Eddy-current response voltages, generated during inspection of metallic structures for anomalies, are often replete with noise. Therefore, analysis of the inspection data and results is difficult or near impossible, resulting in inconsistent or unreliable evaluation of the structure. This invention processes the eddy-current response voltage, removing the effect of random noise, to allow proper identification of anomalies within and associated with the structure.

  12. Eddy current inspection of power plant heat-exchanger tubing in the USA

    SciTech Connect (OSTI)

    Fishkin, P.; Nash, J. [MQS Inspection, Inc., Chicago, IL (United States)

    1995-02-01T23:59:59.000Z

    The latest experience in the eddy current inspection of heat-exchanger tubing by means of ID probes is reported and generalized. The authors demonstrate the feasibility of using modern, general-purpose, digital eddy current flaw detectors equipped with microprocessors, displays, the capability for recording inspection results on paper or magnetic media, sound and visual alarms. The NDE personnel qualification and certification requirements are described.

  13. Lehrgebiet Software Engineering Prof. Dr. Jrg Desel

    E-Print Network [OSTI]

    Freytag, Johann-Christoph

    Partial Orders Fit For Work PART I: A proof using partial orders (occurrence nets) work done in 1988 Desel Slide 3 PART I: A proof using partial orders (occurrence nets) work done in 1988 at GMD #12 Programmierung Prof. Dr. Jörg Desel Slide 4 An occurrence net (B,E,K) #12;Fakultät für Mathematik und Informatik

  14. Lagrangian study of transport and mixing in a mesoscale eddy street

    E-Print Network [OSTI]

    S. V. Prants; M. V. Budyansky; V. I. Ponomarev; M. Yu. Uleysky

    2012-02-02T23:59:59.000Z

    We use dynamical systems approach and Lagrangian tools to study surface transport and mixing of water masses in a selected coastal region of the Japan Sea with moving mesoscale eddies associated with the Primorskoye Current. Lagrangian trajectories are computed for a large number of particles in an interpolated velocity field generated by a numerical regional multi-layer eddy-resolving circulation model. We compute finite-time Lyapunov exponents for a comparatively long period of time by the method developed and plot the Lyapunov synoptic map quantifying surface transport and mixing in that region. This map uncovers the striking flow structures along the coast with a mesoscale eddy street and repelling material lines. We propose new Lagrangian diagnostic tools --- the time of exit of particles off a selected box, the number of changes of the sign of zonal and meridional velocities --- to study transport and mixing by a pair of strongly interacting eddies often visible at sea-surface temperature satellite images in that region. We develop a technique to track evolution of clusters of particles, streaklines and material lines. The Lagrangian tools used allow us to reveal mesoscale eddies and their structure, to track different phases of the coastal flow, to find inhomogeneous character of transport and mixing on mesoscales and submesoscales and to quantify mixing by the values of exit times and the number of times particles wind around the eddy's center.

  15. Red Mesa | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ | Roadmap Jump to:bJumpRed Bank, New Jersey:Mesa Jump to:

  16. Enrico Fermi Awards Ceremony for Dr. Mildred S. Dresselhaus and Dr. Burton Richter, May 2012 (Presentations, including remarks by Energy Secretary, Dr. Steven Chu)

    ScienceCinema (OSTI)

    Chu, Steven (U.S. Energy Secretary)

    2012-06-28T23:59:59.000Z

    The Fermi Award is a Presidential award and is one of the oldest and most prestigious science and technology honors bestowed by the U.S. Government. On May 7, 2012 it was conferred upon two exceptional scientists: Dr. Mildred Dresselhaus, 'for her scientific leadership, her major contributions to science and energy policy, her selfless work in science education and the advancement of diversity in the scientific workplace, and her highly original and impactful research,' and Dr. Burton Richter, 'for the breadth of his influence in the multiple disciplines of accelerator physics and particle physics, his profound scientific discoveries, his visionary leadership as SLAC Director, his leadership of science, and his notable contributions in energy and public policy.' Dr. John Holder, Director of the White House Office of Science and Technology Policy, opened the ceremony, and Dr. Bill Brinkman, Director of DOE's Office of Science introduced the main speaker, Dr. Steven Chu, U.S. Energy Secretary.

  17. Enrico Fermi Awards Ceremony for Dr. Mildred S. Dresselhaus and Dr. Burton Richter, May 2012 (Presentations, including remarks by Energy Secretary, Dr. Steven Chu)

    SciTech Connect (OSTI)

    Chu, Steven (U.S. Energy Secretary) [U.S. Energy Secretary

    2012-05-07T23:59:59.000Z

    The Fermi Award is a Presidential award and is one of the oldest and most prestigious science and technology honors bestowed by the U.S. Government. On May 7, 2012 it was conferred upon two exceptional scientists: Dr. Mildred Dresselhaus, 'for her scientific leadership, her major contributions to science and energy policy, her selfless work in science education and the advancement of diversity in the scientific workplace, and her highly original and impactful research,' and Dr. Burton Richter, 'for the breadth of his influence in the multiple disciplines of accelerator physics and particle physics, his profound scientific discoveries, his visionary leadership as SLAC Director, his leadership of science, and his notable contributions in energy and public policy.' Dr. John Holder, Director of the White House Office of Science and Technology Policy, opened the ceremony, and Dr. Bill Brinkman, Director of DOE's Office of Science introduced the main speaker, Dr. Steven Chu, U.S. Energy Secretary.

  18. Distance dependence of the phase signal in eddy current microscopy

    E-Print Network [OSTI]

    Roll, Tino; Fischer, Ulrich; Schleberger, Marika

    2008-01-01T23:59:59.000Z

    Atomic force microscopy using a magnetic tip is a promising tool for investigating conductivity on the nano-scale. By the oscillating magnetic tip eddy currents are induced in the conducting parts of the sample which can be detected in the phase signal of the cantilever. However, the origin of the phase signal is still controversial because theoretical calculations using a monopole appoximation for taking the electromagnetic forces acting on the tip into account yield an effect which is too small by more than two orders of magnitude. In order to determine the origin of the signal we used especially prepared gold nano patterns embedded in a non-conducting polycarbonate matrix and measured the distance dependence of the phase signal. Our data clearly shows that the interacting forces are long ranged and therefore, are likely due to the electromagnetic interaction between the magnetic tip and the conducting parts of the surface. Due to the long range character of the interaction a change in conductivity of $\\Del...

  19. Eddy pump dredging: Does it produce water quality impacts?

    SciTech Connect (OSTI)

    Creek, K.D. [Pacific Gas and Electric Co., Ramon, CA (United States); Sagraves, T.H. [RESNA Industries, Magalia, CA (United States)

    1995-12-31T23:59:59.000Z

    During a prototype demonstration at Pacific Gas and Electric Company`s (PG&E`s) Cresta Reservoir, the feasibility of a new dredging technique was tested for its reported ability to produce only minimal water quality impacts. The technique, developed by PBMK Consultants and Engineers, uses the EDDY Pump, a patented submerged slurry pump system with a higher solids-to-liquid ratio and lower re-suspension of sediment than achieved by conventional suction dredging. Turbidity and total suspended solids concentrations of water samples collected adjacent to and downstream of the pump head were similar to those of samples collected adjacent to and upstream of the pump head. Dissolved oxygen downstream of the pump head remained near saturation. The dredged sediment was pumped 600 m upstream of the pump head and discharged back to the surface of Cresta Reservoir. Increases in turbidity and total suspended solids downstream of the discharge site were minor. Throughout the demonstration, turbidity levels and total suspended solids concentrations remained well below allowable levels set by the California Regional Water Quality Control Board - no more than a 25 NTU turbidity increase over ambient background nor more than 80 mg/I total suspended solids, absolute.

  20. Variable current speed controller for eddy current motors

    DOE Patents [OSTI]

    Gerth, H.L.; Bailey, J.M.; Casstevens, J.M.; Dixon, J.H.; Griffith, B.O.; Igou, R.E.

    1982-03-12T23:59:59.000Z

    A speed control system for eddy current motors is provided in which the current to the motor from a constant frequency power source is varied by comparing the actual motor speed signal with a setpoint speed signal to control the motor speed according to the selected setpoint speed. A three-phase variable voltage autotransformer is provided for controlling the voltage from a three-phase power supply. A corresponding plurality of current control resistors is provided in series with each phase of the autotransformer output connected to inputs of a three-phase motor. Each resistor is connected in parallel with a set of normally closed contacts of plurality of relays which are operated by control logic. A logic circuit compares the selected speed with the actual motor speed obtained from a digital tachometer monitoring the motor spindle speed and operated the relays to add or substract resistance equally in each phase of the motor input to vary the motor current to control the motor at the selected speed.

  1. Hydrodynamic and hydromagnetic energy spectra from large eddy simulations

    E-Print Network [OSTI]

    N. E. L. Haugen; A. Brandenburg

    2006-06-29T23:59:59.000Z

    Direct and large eddy simulations of hydrodynamic and hydromagnetic turbulence have been performed in an attempt to isolate artifacts from real and possibly asymptotic features in the energy spectra. It is shown that in a hydrodynamic turbulence simulation with a Smagorinsky subgrid scale model using 512^3 meshpoints two important features of the 4096^3 simulation on the Earth simulator (Kaneda et al. 2003, Phys. Fluids 15, L21) are reproduced: a k^{-0.1} correction to the inertial range with a k^{-5/3} Kolmogorov slope and the form of the bottleneck just before the dissipative subrange. Furthermore, it is shown that, while a Smagorinsky-type model for the induction equation causes an artificial and unacceptable reduction in the dynamo efficiency, hyper-resistivity yields good agreement with direct simulations. In the large-scale part of the inertial range, an excess of the spectral magnetic energy over the spectral kinetic energy is confirmed. However, a trend towards spectral equipartition at smaller scales in the inertial range can be identified. With magnetic fields, no explicit bottleneck effect is seen.

  2. Mesoscale and Large-Eddy Simulations for Wind Energy

    SciTech Connect (OSTI)

    Marjanovic, N

    2011-02-22T23:59:59.000Z

    Operational wind power forecasting, turbine micrositing, and turbine design require high-resolution simulations of atmospheric flow over complex terrain. The use of both Reynolds-Averaged Navier Stokes (RANS) and large-eddy (LES) simulations is explored for wind energy applications using the Weather Research and Forecasting (WRF) model. To adequately resolve terrain and turbulence in the atmospheric boundary layer, grid nesting is used to refine the grid from mesoscale to finer scales. This paper examines the performance of the grid nesting configuration, turbulence closures, and resolution (up to as fine as 100 m horizontal spacing) for simulations of synoptically and locally driven wind ramping events at a West Coast North American wind farm. Interestingly, little improvement is found when using higher resolution simulations or better resolved turbulence closures in comparison to observation data available for this particular site. This is true for week-long simulations as well, where finer resolution runs show only small changes in the distribution of wind speeds or turbulence intensities. It appears that the relatively simple topography of this site is adequately resolved by all model grids (even as coarse as 2.7 km) so that all resolutions are able to model the physics at similar accuracy. The accuracy of the results is shown in this paper to be more dependent on the parameterization of the land-surface characteristics such as soil moisture rather than on grid resolution.

  3. Heat resistances and thermal acclimation rates in the mosquitofish, Gambusia affinis (Baird and Girard) and the red shiner, Notropis lutrensis (Baird and Girard)

    E-Print Network [OSTI]

    Cox, Myron Isaiah

    1970-01-01T23:59:59.000Z

    , Gambusia ai'finis (Baird and Girard) and the Red Sh', ~Nt 1 1t ' (2 ' d dG d). (Ny1970) Myron I. Cox, B. S. , University of Utah Directed by: Dr. Kirk Strawn Nosquitofish and red shiners were collected from the Little Brazos River and Country Club Lake... CONCLUSIONS. 8 e 22 26 31 31 34 39 4B 59 REI"ERENCES. VITA. 63 LIST OF TABLES Table 1. Analysis of covariance of heat resistances of mosquitofish collected June 28, 1968 from Country Club lake and tested at 40 C ~ Table 2. Analysis of covs...

  4. Tidal Residual Eddies and their Effect on Water Exchange in Puget Sound

    SciTech Connect (OSTI)

    Yang, Zhaoqing; Wang, Taiping

    2013-08-30T23:59:59.000Z

    Tidal residual eddies are one of the important hydrodynamic features in tidally dominant estuaries and coastal bays, and they could have significant effects on water exchange in a tidal system. This paper presents a modeling study of tides and tidal residual eddies in Puget Sound, a tidally dominant fjord-like estuary in the Pacific Northwest coast, using a three-dimensional finite-volume coastal ocean model. Mechanisms of vorticity generation and asymmetric distribution patterns around an island/headland were analyzed using the dynamic vorticity transfer approach and numerical experiments. Model results of Puget Sound show that a number of large twin tidal residual eddies exist in the Admiralty Inlet because of the presence of major headlands in the inlet. Simulated residual vorticities near the major headlands indicate that the clockwise tidal residual eddy (negative vorticity) is generally stronger than the anticlockwise eddy (positive vorticity) because of the effect of Coriolis force. The effect of tidal residual eddies on water exchange in Puget Sound and its sub-basins were evaluated by simulations of dye transport. It was found that the strong transverse variability of residual currents in the Admiralty Inlet results in a dominant seaward transport along the eastern shore and a dominant landward transport along the western shore of the Inlet. A similar transport pattern in Hood Canal is caused by the presence of tidal residual eddies near the entrance of the canal. Model results show that tidal residual currents in Whidbey Basin are small in comparison to other sub-basins. A large clockwise residual circulation is formed around Vashon Island near entrance of South Sound, which can potentially constrain the water exchange between the Central Basin and South Sound.

  5. Dr. Imre Gyuk | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian NuclearandJunetrack graphics4Dimitri Kusnezov -Purpose TheDougDr. Imre

  6. Dr. Adele Merritt | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsNovember 13, 2014ContributingDOEDepartment ofOff-GasServicesDownload the FinalDr.

  7. Dr. Daniel Giammar | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract ManagementDiscovering HowAna Moore Anne JonesDouglasDisablingDr.

  8. Dr. Steven Aoki | National Nuclear Security Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract ManagementDiscovering HowAna Moore AnneElizabethDr. Robinson E.

  9. Dr.James J.Spivey

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract ManagementDiscovering HowAna Moore AnneElizabethDr. Robinson Sample

  10. Dr. Ken Friedman | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy,Policy ActDetroit7471 FederalDonna FriendDecember StatementDr.

  11. Dr. Monica C. Regalbuto | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0andEnergyGlobal NuclearofCommunication |Does YourDr. Monica C. Regalbuto

  12. Dr. Steven Chu | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure youWells | Department ofReserveDepartment of EnergyDougDr.

  13. Dr. David Peters | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. Daniel A.

  14. Dr. Devens Gust | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. Daniel A.Devens Gust

  15. Dr. Donald Bryant | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. Daniel A.Devens

  16. Dr. Hao Zhang | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr. Daniel

  17. Dr. Pratim Biswas | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday, April 15, 2011

  18. Dr. Steve Mayfield | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday, AprilSteve Mayfield

  19. Dr. Steven Chu, Secretary of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday, AprilSteve

  20. Dr. Su Lin | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday, AprilSteveSu Lin

  1. Dr. Ursula Goodenough | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday, AprilSteveSu

  2. Dr. Warren Beck | Photosynthetic Antenna Research Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday, AprilSteveSuWarren

  3. Dr. Yuan Ping Lawrence Livermore National Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday,

  4. Dr.James J.Spivey

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday,Books: cat Catalysis

  5. Dr.James J.Spivey

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday,Books: cat

  6. Dr.James J.Spivey

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday,Books: catPost

  7. Dr.James J.Spivey

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday,Books: catPostLinks:

  8. Dr.James J.Spivey

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday,Books:

  9. Dr.James J.Spivey

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69Christopher Fecko Dr.Friday,Books:Research:

  10. 65th Birthday of Dr.Owen Lock

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Remerciements au Dr.Owen Lock, un des pionniers du Cern, l'occasion de son 65me anniversaire et sa retraite (avec plusieurs intervenants)

  11. SVG for Automotive User Interfaces Dr. Sbastien Boisgrault

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    ................................................................................................................. 1 EDONA and Human-Machine Interface Design for the Automotive Industry1 SVG for Automotive User Interfaces Dr. Sbastien Boisgrault .................................................................................................... 7 SVG standards for automotive HMI modeling

  12. Dr. Perlmutter on his Nobel Prize-Winning Discovery

    Broader source: Energy.gov [DOE]

    Dr. Saul Perlmutter presents, Supernovae, Dark Energy and the Accelerating Universe: How the Energy Department Helped to Win (yet another) Nobel Prize.

  13. Dr. Hong Liu (left) , postdoctoral researcher in environmental engineering, and Dr. Bruce

    E-Print Network [OSTI]

    to a limited amount of hydrogen and a mixture of "dead end" fermentation end products such as acetic the fermentation barrier and convert a "dead end" fermentation product, acetic acid, into carbon dioxide typically by fermentation alone. Dr. Bruce Logan, the Kappe professor of environmental engineering

  14. CAD BASED DRILLING USING CONVENTIONAL TWIST DRILLS PANAGIOTIS KYRATSIS*, Dr. Ing. NIKOLAOS BILALIS**, Dr. VASILIS

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    CAD BASED DRILLING USING CONVENTIONAL TWIST DRILLS PANAGIOTIS KYRATSIS*, Dr. Ing. NIKOLAOS BILALIS, antoniadis@dpem.tuc.gr Abstract: Twist drills are geometrically complex tools, which are used in industry and experimental approaches for drilling simulation. The present paper is based on the ground that the increasing

  15. 16Research Excellence Accomplishments by University Professors Dr. Noyori and Dr. Akasaki

    E-Print Network [OSTI]

    Takahashi, Ryo

    of GaN blue-light-emitting diode is a successful example of Industry-Academia-Government cooperation. Dr al. realized their dreams. University Professor Isamu Akasaki and Blue-Light-emitting Diodes revolutionized the field of semiconductor research. Blue-light-emitting diodes (LEDs) can be utilized in a wide

  16. MyRED Mobiles Student Views

    E-Print Network [OSTI]

    Farritor, Shane

    tap on Shopping Cart, then select term. Tap on Class Search to find courses to place in your shoppingMyRED Mobiles Student Views Mar 2014 Page 1 Login/Sign-in Enter your MyRED /TrueYou credentials. Tap on any Term bar to view a schedule for the selected term. Home Screen/Main Menu Class Schedule

  17. Non-Destructive Evaluation of Thermal Spray Coating Interface Quality by Eddy Current Method

    SciTech Connect (OSTI)

    B.Mi; X. Zhao; R. Bayles

    2006-05-26T23:59:59.000Z

    Thermal spray coating is usually applied through directing molten or softened particles at very high velocities onto a substrate. An eddy current non-destructive inspection technique is presented here for thermal spray coating interface quality characterization. Several high-velocity-oxy-fuel (HVOF) coated steel plates were produced with different surface preparation conditions before applying the coating, e.g., grit-blasted surface, wire-brush cleaned surface, and a dirty surface. A quad-frequency eddy current probe was used to manually scan over the coating surface to evaluate the bonding quality. Experimental results show that the three surface preparation conditions can be successfully differentiated by looking into the impedance difference observed from the eddy current probe. The measurement is fairly robust and consistent. More specimens are also prepared with variations of process parameters, such as spray angle, stand-off distance, and application of corrosion protective sealant, etc. They are blindly tested to evaluate the reliability of the eddy current system. Quantitative relations between the coating bond strength and the eddy current response are also established with the support of destructive testing. This non-contact, non-destructive, easy to use technique has the potential for evaluating the coating quality immediately after its application so that any defects can be corrected immediately.

  18. Negative magnetic eddy diffusivities from test-field method and multiscale stability theory

    E-Print Network [OSTI]

    Alexander Andrievsky; Axel Brandenburg; Alain Noullez; Vladislav Zheligovsky

    2015-01-19T23:59:59.000Z

    The generation of large-scale magnetic field in the kinematic regime in the absence of an alpha-effect is investigated by following two different approaches, namely the test-field method and multiscale stability theory relying on the homogenisation technique. We show analytically that the former, applied for the evaluation of magnetic eddy diffusivities, yields results that fully agree with the latter. Our computations of the magnetic eddy diffusivity tensor for the specific instances of the parity-invariant flow-IV of G.O. Roberts and the modified Taylor-Green flow in a suitable range of parameter values confirm the findings of previous studies, and also explain some of their apparent contradictions. The two flows have large symmetry groups; this is used to considerably simplify the eddy diffusivity tensor. Finally, a new analytic result is presented: upon expressing the eddy diffusivity tensor in terms of solutions to auxiliary problems for the adjoint operator, we derive relations between magnetic eddy diffusivity tensors that arise for opposite small-scale flows v(x) and -v(x).

  19. Negative magnetic eddy diffusivities from test-field method and multiscale stability theory

    E-Print Network [OSTI]

    Andrievsky, Alexander; Noullez, Alain; Zheligovsky, Vladislav

    2015-01-01T23:59:59.000Z

    The generation of large-scale magnetic field in the kinematic regime in the absence of an alpha-effect is investigated by following two different approaches, namely the test-field method and multiscale stability theory relying on the homogenisation technique. We show analytically that the former, applied for the evaluation of magnetic eddy diffusivities, yields results that fully agree with the latter. Our computations of the magnetic eddy diffusivity tensor for the specific instances of the parity-invariant flow-IV of G.O. Roberts and the modified Taylor-Green flow in a suitable range of parameter values confirm the findings of previous studies, and also explain some of their apparent contradictions. The two flows have large symmetry groups; this is used to considerably simplify the eddy diffusivity tensor. Finally, a new analytic result is presented: upon expressing the eddy diffusivity tensor in terms of solutions to auxiliary problems for the adjoint operator, we derive relations between magnetic eddy dif...

  20. Measurements and large eddy simulation of propagating premixed flames

    SciTech Connect (OSTI)

    Masri, A.R.; Cadwallader, B.J. [School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006 (Australia); Ibrahim, S.S. [Department of Aeronautical and Automotive Engineering, Loughborough University, Loughborough LE11 3TU (United Kingdom)

    2006-07-15T23:59:59.000Z

    This paper presents an experimental and numerical study of unsteady turbulent premixed flames igniting in an initially stagnant mixture and propagating past solid obstacles. The objective here is to study the outstanding issue of flow-flame interactions in transient premixed combustion environments. Particular emphasis is placed on the burning rate and the structure of the flame front. The experimental configuration consists of a chamber with a square cross-section filled with a combustible mixture of propane-air ignited from rest. An array of baffle plates as well as geometrical obstructions of varying shapes and blockage ratios, are placed in the path of the flame as it propagates from the ignition source to the vented end of the enclosure. A range of flame propagation conditions are studied experimentally. Measurements are presented for pressure-time traces, high-speed images of the flame front, mean velocities obtained from particle imaging velocimetry and laser induced fluorescence images of the hydroxyl radical OH. Three-dimensional large eddy simulations (LES) are also made for a case where a square obstacle and an array of baffle plates are placed in the chamber. The dynamic Germano model and a simple flamelet combustion model are used at the sub-grid scale. The effects of grid size and sub-grid filter width are also discussed. Calculations and measurements are found to be in good agreement with respect to flame structure and peak overpressure. Turbulence levels increase significantly at the leading edge of the flame as it propagates past the array of baffle plates and the obstacle. With reference to the regime diagrams for turbulent premixed combustion, it is noted that the flame continues to lie in the zones of thin reactions or corrugated flamelets regardless of the stage of propagation along the chamber. (author)

  1. Pollutant Capacity within the Vadose Zone of Soils Daniel P. Treese, Dr. Shirley E. Clark, J. Bradley Mikula, Dr. Katherine H. Baker

    E-Print Network [OSTI]

    Clark, Shirley E.

    . Bradley Mikula, Dr. Katherine H. Baker Environmental Pollution Control Program Penn State Harrisburg

  2. Magnetic diagnostics for equilibrium reconstructions with eddy currents on the lithium tokamak experimenta)

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Schmitt, J. C. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA; Bialek, J. [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA; Lazerson, S. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA; Majeski, R. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA

    2014-11-01T23:59:59.000Z

    The Lithium Tokamak eXperiment is a spherical tokamak with a close-fitting low-recycling wall composed of thin lithium layers evaporated onto a stainless steel-lined copper shell. Long-lived non-axisymmetric eddy currents are induced in the shell and vacuum vessel by transient plasma and coil currents and these eddy currents influence both the plasma and the magnetic diagnositc signals that are used as constraints for equilibrium reconstruction. A newly installed set of re-entrant magnetic diagnostics and internal saddle flux loops, compatible with high-temperatures and lithium environments, is discussed. Details of the axisymmetric (2D) and non-axisymmetric (3D) treatments of the eddy currents and the equilibrium reconstruction are presented.

  3. Non-Destructive Evaluation of Thermal Spray Coating Interface Quality By Eddy Current Method

    SciTech Connect (OSTI)

    B. Mi; G. Zhao; R. Bayles

    2006-08-10T23:59:59.000Z

    Thermal spray coating is usually applied through directing molten or softened particles at very high velocities onto a substrate. An eddy current non-destructive inspection technique is presented here for thermal spray coating interface quality characterization. Several high-velocity-oxy-fuel (HVOF) coated steel plates were produced with various surface preparation conditions or spray process parameters. A quad-frequency eddy current probe was used to manually scan over the coating surface to evaluate the bonding quality. Experimental results show that different surface preparation conditions and varied process parameters can be successfully differentiated by the impedance value observed from the eddy current probe. The measurement is fairly robust and consistent. This non-contact, nondestructive, easy-to-use technique has the potential for evaluating the coating quality immediately after its application so that any defects can be corrected immediately.

  4. Magnetic diagnostics for equilibrium reconstructions with eddy currents on the lithium tokamak experiment

    SciTech Connect (OSTI)

    Schmitt, J. C., E-mail: jschmitt@pppl.gov; Lazerson, S.; Majeski, R. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Bialek, J. [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States)

    2014-11-15T23:59:59.000Z

    The Lithium Tokamak eXperiment is a spherical tokamak with a close-fitting low-recycling wall composed of thin lithium layers evaporated onto a stainless steel-lined copper shell. Long-lived non-axisymmetric eddy currents are induced in the shell and vacuum vessel by transient plasma and coil currents and these eddy currents influence both the plasma and the magnetic diagnostic signals that are used as constraints for equilibrium reconstruction. A newly installed set of re-entrant magnetic diagnostics and internal saddle flux loops, compatible with high-temperatures and lithium environments, is discussed. Details of the axisymmetric (2D) and non-axisymmetric (3D) treatments of the eddy currents and the equilibrium reconstruction are presented.

  5. On The Use of Eddy Current Brakes as Tunable, Fast Turn-On Viscous Dampers For Haptic Rendering

    E-Print Network [OSTI]

    Hayward, Vincent

    On The Use of Eddy Current Brakes as Tunable, Fast Turn-On Viscous Dampers For Haptic Rendering, linear dampers for haptic rendering using a prototype haptic device outfitted with eddy current brakes discuss the results from haptic experiments for rendering viscosity, virtual walls and virtual friction

  6. Deep-Sea Research II 54 (2007) 789796 The Leeuwin Current and its eddies: An introductory overview

    E-Print Network [OSTI]

    Feng, Ming

    2007-01-01T23:59:59.000Z

    Deep-Sea Research II 54 (2007) 789796 The Leeuwin Current and its eddies: An introductory overview 2007 Elsevier Ltd. All rights reserved. Keywords: Mesoscale eddy; Leeuwin Current; Leeuwin Undercurrent December 2006; accepted 24 December 2006 Available online 21 June 2007 Abstract The Leeuwin Current (LC

  7. Initial results from the Pawnee Eddy Correlation system for dry acid-deposition research. Forest Service research paper

    SciTech Connect (OSTI)

    Zeller, K.; Massman, W.; Stocker, D.; Fox, D.G.; Stedman, D.

    1988-01-01T23:59:59.000Z

    The Pawnee Grassland Eddy Correlation Dry Deposition Project is described. Instrumentation, methods of analysis, and initial data and research findings are presented. Data from this eddy correlation system show agreement with: previously observations of deposition velocities for atmospheric ozone, NO/sub 2/ and NOx; micrometeorological theory; micrometeorological site characteristics.

  8. Deep-Sea Research I 53 (2006) 17181728 A North Atlantic deep-water eddy in the

    E-Print Network [OSTI]

    Miami, University of

    2006-01-01T23:59:59.000Z

    properties in the SE Atlantic Ocean and SW Indian Ocean, we conclude that the eddy was formed in the Agulhas, which flows from the SE Atlantic around the Agulhas Bank. A deeply penetrating Agulhas Ring spun up. Keywords: Circulation; Indian Ocean; Boundary currents; Agulhas Current; Deep water; Oceanic eddies 1

  9. MEASUREMENTS OF VELOCITY PROFILES AND SUSPENDED-SEDIMENT CONCENTRATIONS IN A COLORADO RIVER EDDY DURING HIGH FLOW

    E-Print Network [OSTI]

    averaged; suspended sediment is modeled through use of the advection-dispersion equation which yieldsMEASUREMENTS OF VELOCITY PROFILES AND SUSPENDED-SEDIMENT CONCENTRATIONS IN A COLORADO RIVER EDDY profiles and suspended-sediment concentration were made in a recirculating eddy along the Colorado River

  10. University of Northern British Columbia Posting # 12-048DR

    E-Print Network [OSTI]

    Northern British Columbia, University of

    University of Northern British Columbia Posting # 12-048DR University Librarian (Full Time, Term - One year) The University of Northern British Columbia (UNBC) aspires to be Canada's premier small quoting competition #12- 048DR to: Human Resources, University of Northern British Columbia, 3333

  11. PD Dr. Martin Stetter, Siemens AG 1 Optimierungsverfahren

    E-Print Network [OSTI]

    Popeea, Corneliu - Chair for Foundations of Software Reliability and Theoretical Computer Science

    PD Dr. Martin Stetter, Siemens AG 1 Optimierungsverfahren Optimierung konvexer Funktionen: Optimierungsverfahren #12;PD Dr. Martin Stetter, Siemens AG 2 Optimierung konvexer Funktionen Hufiges Problem bei Stetter, Siemens AG 3 Funktionen einer Variable )(wF 1D-Gradientenabstieg: Gehe ein kleines Stck

  12. Chair of the Action Prof. Dr. Sabine Kuhlmann

    E-Print Network [OSTI]

    Potsdam, Universität

    .bouckaert@soc.kuleuven.be WG I-Leader External (Post-) NPM Prof. Dr. Ivan Kopric University of Zagreb, Faculty of Law HR-10000 Zagreb E-mail: ikopric@pravo.hr WG II-Leader Internal (Post-) NPM Prof. Dr. Riccardo Mussari University Management Committee WG I: External(Post-) NPM WG III: Territorial/Functional Re-Scaling Name Country Name

  13. USB Key Profile Manager for Advisor: Dr. Chris Pollett

    E-Print Network [OSTI]

    Pollett, Chris

    . · Search for profiles. · Load the profile to Mozilla's registry. · Clean up at shutdown. #12;Feature 2USB Key Profile Manager for Mozilla by Yun Zhou Advisor: Dr. Chris Pollett Committee Members: Dr. Design and Implementation · Event-driven structure · USB profile loader · User authentication · Bulk

  14. IEEE TRANSACTIONS ON MAGNETICS, VOL. 48, NO. 2, FEBRUARY 2012 427 A New Integral Formulation for Eddy Current Computation in Thin

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    for Eddy Current Computation in Thin Conductive Shells T. Le-Duc, G. Meunier, O. Chadebec, and J Fourier, CNRS UMR 5269, Grenoble, France In order to compute eddy current distributions in thin conductive conductive shells. I. INTRODUCTION I NTEGRAL formulations dedicated to the computation of eddy currents

  15. AN EDDY CURRENT PROBLEM IN TERMS OF A TIME-PRIMITIVE OF THE ELECTRIC FIELD WITH NON-LOCAL SOURCE CONDITIONS

    E-Print Network [OSTI]

    Rodríguez, Rodolfo

    AN EDDY CURRENT PROBLEM IN TERMS OF A TIME-PRIMITIVE OF THE ELECTRIC FIELD WITH NON-LOCAL SOURCE Abstract. The aim of this paper is to analyze a formulation of the eddy current problem in terms of a time and phrases: Eddy current problems, time-dependent electromagnetic problems, input current intensities

  16. Eddy currents in a transverse MRI gradient coil. J.M.B. Kroot, S.J.L. van Eijndhoven, A.A.F. van de Ven

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    Eddy currents in a transverse MRI gradient coil. J.M.B. Kroot, S.J.L. van Eijndhoven, A.A.F. van de logarithmically singular kernel represents inductive effects related to the occurrence of eddy currents on the development of eddy currents in the gradient coils, which have a negative effect on the uniformity

  17. Inverse Problems 16 (2000) 483494. Printed in the UK PII: S0266-5611(00)04848-6 Imaging the solidification of molten metal by eddy currents: II

    E-Print Network [OSTI]

    Hua, Yingbo

    2000-01-01T23:59:59.000Z

    the solidification of molten metal by eddy currents: II Minh H Pham, Yingbo Hua and Neil B Gray The Department by the induced eddy currents inside the innermost cylinder. Identification of the CSG of an infinitely long space. The existing eddy-current inverse techniques [5,6] solve very different problems. In this paper

  18. The measurement of eddy current conductivity, in view of its frequen-cy dependent penetration depth, has been suggested as a possible means to

    E-Print Network [OSTI]

    Nagy, Peter B.

    ABSTRACT The measurement of eddy current conductivity, in view of its frequen- cy dependent of the near surface electrical conductivity measured by the eddy current method in the presence of surface dissipated, leaving only the surface roughness. Eddy current electri- cal conductivity measurements were

  19. IEEE TRANSACTIONS ON MAGNETICS, VOL. 35, NO. 3, MAY 1999 1873 Flaws Characterization with Pulsed Eddy Currents N.D.T.

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Eddy Currents N.D.T. T.Clauzon, F.Thollon, A. Nicolas. C.E.G.E.L.Y-UPRESAC.N.R.S5005-Ecole Centrale de the impulseresponsegives an estimationof the dimensionsof the flaw. Index terms- Eddy current testing, flaw to the filler, ultrasounds do not give results. So pulsed eddy current N.D.T has to be used. Characterization

  20. 166 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 49, NO. 1, JANUARY 2001 Analysis of Eddy-Current Losses Over Conductive

    E-Print Network [OSTI]

    California at Berkeley, University of

    of Eddy-Current Losses Over Conductive Substrates with Applications to Monolithic Inductors-form integral representation for the eddy-current losses over a conductive substrate is pre- sented. The results for spiral inductors. Index Terms--CMOS substrate losses, eddy currents, monolithic inductors, monolithic

  1. 866 IEEE TRANSACTIONS ON MAGNETICS, VOL. 44, NO. 6, JUNE 2008 Dynamical Models for Eddy Current in Ferromagnetic Cores Introduced in

    E-Print Network [OSTI]

    Boyer, Edmond

    866 IEEE TRANSACTIONS ON MAGNETICS, VOL. 44, NO. 6, JUNE 2008 Dynamical Models for Eddy Current accurate dynamical models for representing eddy currents are studied. The simulation of the relay is provided. Index Terms--AC circuit breakers (CBs), eddy currents, magnetic hysteresis, optimization methods

  2. Enrico Fermi Awards Ceremony for Dr. Allen J. Bard and Dr. Andrew Sessler, February 2014 (Presentations, including remarks by Energy Secretary, Dr. Ernest Moniz)

    SciTech Connect (OSTI)

    Moniz, Ernest [U.S. Energy Secretary

    2014-02-03T23:59:59.000Z

    The Fermi Award is a Presidential award and is one of the oldest and most prestigious science and technology honors bestowed by the U.S. Government. On February 3, 2014 it was conferred upon two exceptional scientists. The first to be recognized is Dr. Allen J. Bard, 'for international leadership in electrochemical science and technology, for advances in photoelectrochemistry and photocatalytic materials, processes, and devices, and for discovery and development of electrochemical methods including electrogenerated chemiluminescence and scanning electrochemical microscopy.' The other honoree is Dr. Andrew Sessler, 'for advancing accelerators as powerful tools of scientific discovery, for visionary direction of the research enterprise focused on challenges in energy and the environment, and for championing outreach and freedom of scientific inquiry worldwide.' Dr. Patricia Dehmer opened the ceremony, and Dr. Ernest Moniz presented the awards.

  3. Enrico Fermi Awards Ceremony for Dr. Allen J. Bard and Dr. Andrew Sessler, February 2014 (Presentations, including remarks by Energy Secretary, Dr. Ernest Moniz)

    ScienceCinema (OSTI)

    Moniz, Ernest [U.S. Energy Secretary

    2014-08-22T23:59:59.000Z

    The Fermi Award is a Presidential award and is one of the oldest and most prestigious science and technology honors bestowed by the U.S. Government. On February 3, 2014 it was conferred upon two exceptional scientists. The first to be recognized is Dr. Allen J. Bard, 'for international leadership in electrochemical science and technology, for advances in photoelectrochemistry and photocatalytic materials, processes, and devices, and for discovery and development of electrochemical methods including electrogenerated chemiluminescence and scanning electrochemical microscopy.' The other honoree is Dr. Andrew Sessler, 'for advancing accelerators as powerful tools of scientific discovery, for visionary direction of the research enterprise focused on challenges in energy and the environment, and for championing outreach and freedom of scientific inquiry worldwide.' Dr. Patricia Dehmer opened the ceremony, and Dr. Ernest Moniz presented the awards.

  4. Automated measurement system employing eddy currents to adjust probe position and determine metal hardness

    DOE Patents [OSTI]

    Prince, J.M.; Dodson, M.G.; Lechelt, W.M.

    1989-07-18T23:59:59.000Z

    A system for measuring the hardness of cartridge cases employs an eddy current probe for inducing and sensing eddy currents in each cartridge case. A first component of the sensed signal is utilized in a closed loop system for accurately positioning the probe relative to the cartridge case both in the lift off direction and in the tangential direction, and a second component of the sensed signal is employed as a measure of the hardness. The positioning and measurement are carried out under closed loop microprocessor control facilitating hardness testing on a production line basis. 14 figs.

  5. Automated measurement system employing eddy currents to adjust probe position and determine metal hardness

    DOE Patents [OSTI]

    Prince, James M. (Kennewick, WA); Dodson, Michael G. (Richland, WA); Lechelt, Wayne M. (Benton City, WA)

    1989-01-01T23:59:59.000Z

    A system for measuring the hardness of cartridge cases employs an eddy current probe for inducing and sensing eddy currents in each cartridge case. A first component of the sensed signal is utilized in a closed loop system for accurately positioning the probe relative to the cartridge case both in the lift off direction and in the tangential direction, and a second component of the sensed signal is employed as a measure of the hardness. The positioning and measurement are carried out under closed loop microprocessor control facilitating hardness testing on a production line basis.

  6. Hidden Crack Detection with GMR Sensing of Magnetic Fields from Eddy Currents

    SciTech Connect (OSTI)

    Ko, Ray T.; Sathish, Shamachary [Structural Integrity Division, University of Dayton Research Institute, 300 College Park Drive, Dayton, Ohio 45469-0120 (United States); Knopp, Jeremy S.; Blodgett, Mark P. [Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433 (United States)

    2007-03-21T23:59:59.000Z

    A giant magneto-resistive (GMR) sensor placed inside a coil has been used for same side eddy current measurements on metallic plates. Magnetic fields from eddy currents generated in these metallic plates by excitation of the coil, are detected by the GMR sensor. The signal excitation and detection is accomplished using a lock-in amplifier which allows independent measurement of the phase and magnitude. The sensor configuration has been used to detect notches. Phase and magnitude images acquired with this sensor configuration are compared with the images obtained using the coil only.

  7. Transient Eddy Current Response Due to a Subsurface Crack in a Conductive Plate

    SciTech Connect (OSTI)

    Fangwei Fu

    2006-08-09T23:59:59.000Z

    Eddy current nondestructive evaluation (NDE) is usually carried out by exciting a time harmonic field using an inductive probe. However, a viable alternative is to use transient eddy current NDE in which a current pulse in a driver coil produces a transient .eld in a conductor that decays at a rate dependent on the conductivity and the permeability of the material and the coil configuration. By using transient eddy current, it is possible to estimate the properties of the conductive medium and to locate and size potential .aws from the measured probe response. The fundamental study described in this dissertation seeks to establish a theoretical understanding of the transient eddy current NDE. Compared with the Fourier transform method, the derived analytical formulations are more convenient when the transient eddy current response within a narrow time range is evaluated. The theoretical analysis provides a valuable tool to study the effect of layer thickness, location of defect, crack opening as well as the optimization of probe design. Analytical expressions have been developed to evaluate the transient response due to eddy currents in a conductive plate based on two asymptotic series. One series converges rapidly for a short time regime and the other for a long time regime and both of them agree with the results calculated by fast Fourier transform over all the times considered. The idea of asymptotic expansion is further applied to determine the induced electromotive force (EMF) in a pick-up coil due to eddy currents in a cylindrical rod. Starting from frequency domain representation, a quasi-static time domain dyadic Green's function for an electric source in a conductive plate has been derived. The resulting expression has three parts; a free space term, multiple image terms and partial reflection terms. The dyadic Green's function serves as the kernel of an electric field integral equation which defines the interaction of an ideal crack with the transient eddy currents in a conductive plate. The crack response is found using the reciprocity theorem. Good agreement is observed between the predictions of the magnetic field due to the crack and experimental measurements.

  8. Vessel Eddy Current Measurement for the National Spherical Torus Experiment (NSTX)

    SciTech Connect (OSTI)

    D.A. Gates; J. Menard; R. Marsala

    2004-11-19T23:59:59.000Z

    A simple analog circuit that measures the NSTX axisymmetric eddy current distribution has been designed and constructed. It is based on simple circuit model of the NSTX vacuum vessel that was calibrated using a special axisymmetric eddy current code which was written so that accuracy was maintained in the vicinity of the current filaments. The measurement and the model have been benchmarked against data from numerous vacuum shots and they are in excellent agreement. This is an important measurement that helps give more accurate equilibrium reconstructions.

  9. Eddy conductivity in and near dry cold fronts in the layer, 70 to 1270 feet

    E-Print Network [OSTI]

    Conlan, Edward Francis

    1965-01-01T23:59:59.000Z

    EDDY CONDUCTIVITY IN AND NEAR DRY COLD FRONTS IN THE LAYER, 70 TO 1270 FEET A Thesis By EDWARD FRANCIS CONLAN Captain, USAF Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE January 1965 Major Subject: METEOROLOGY EDDY CONDUCTIVITY IN AND NEAR DRY COLD FRONTS IN THE LAYER) 70 TO 1270 FEET A Thesis By EDWARD FRANCIS CONLAN Captain, USAF Approved as to style and content by: i J 8~. . c6~h arrmanf o...

  10. U-200: Red Hat Directory Server Information Disclosure Security...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    0: Red Hat Directory Server Information Disclosure Security Issue and Vulnerability U-200: Red Hat Directory Server Information Disclosure Security Issue and Vulnerability June 27,...

  11. T-678: Red Hat Enterprise Virtualization Hypervisor VLAN Packet...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    8: Red Hat Enterprise Virtualization Hypervisor VLAN Packet Processing Flaw Lets Remote Users Deny Service T-678: Red Hat Enterprise Virtualization Hypervisor VLAN Packet...

  12. On Bitcoin and Red Balloons

    E-Print Network [OSTI]

    Babaioff, Moshe; Oren, Sigal; Zohar, Aviv

    2011-01-01T23:59:59.000Z

    We study scenarios in which the goal is to ensure that some information will propagate through a large network of nodes. In these scenarios all nodes that are aware of the information compete for the same prize, and thus have an incentive not to propagate information. One example for such a scenario is the 2009 DARPA Network Challenge (finding red balloons). We give special attention to a second domain, Bitcoin, a decentralized electronic currency system. Bitcoin, which has been getting a large amount of public attention over the last year, represents a radical new approach to monetary systems which has appeared in policy discussions and in the popular press. Its cryptographic fundamentals have largely held up even as its usage has become increasingly widespread. We find, however, that it exhibits a fundamental problem of a different nature, based on how its incentives are structured. We propose a modification to the protocol that can fix this problem. Bitcoin relies on a peer-to-peer network to track transac...

  13. Network Integration of CHP or It's the Network, Stupid! Dr Gareth P. Harrison and Dr A. Robin Wallace

    E-Print Network [OSTI]

    Harrison, Gareth

    Network Integration of CHP or It's the Network, Stupid! Dr Gareth P. Harrison and Dr A. Robin. The European Union CHP Directive requires EU member states to have at least 18% CHP by 2012 and the UK target, CHP is mainly connected to medium or low voltage electrical distribution networks as distributed

  14. Forest transitions and ecosystem services in Zimbabwe Supervisors: Dr Casey Ryan (UoE), Dr Isla Grundy (University of Zimbabwe)

    E-Print Network [OSTI]

    Forest transitions and ecosystem services in Zimbabwe Supervisors: Dr Casey Ryan (UoE), Dr Isla and a variety of other ecosystem services. However the expansion of agricultural land and the curing of tobacco is accelerating deforestation and forest degradation rates. These structural changes to the ecosystem threaten

  15. ADVANCED WETLAND ECOLOGY Instructors: Dr. Matthew Gray (mgray11@utk.edu); Dr. Heath Hagy (hhagy@utk.edu)

    E-Print Network [OSTI]

    Gray, Matthew

    (all day workshop) Biebighauser (USFS) 17 Treatment Wetlands Ludwig (UT) 22 Optional Field TripWFS 536 ADVANCED WETLAND ECOLOGY Fall 2011 Instructors: Dr. Matthew Gray (mgray11@utk.edu); Dr Text: Wetlands, 2000, 3rd edition, Wiley (www.wiley.com, ISBN 047129232X) or Wetlands, 2007, 4th

  16. Nr. 308 / 2012 // 23. Nov. 2012 Die Fahnenhissung im Jahr 2011: Bildmitte v.l.: Frauenbeauftragte Prof. Dr. Gabriele Obermaier,

    E-Print Network [OSTI]

    Ullmann, G. Matthias

    Prof. Dr. Gabriele Obermaier, Kanzler Dr. Markus Zanner, Vizepräsident Prof. Dr. Stefan Leible. Gabriele Obermaier werden in diesem Jahr der Kanzler der Universität Dr. Markus Zanner, der zweite

  17. Routine metabolism and critical oxygen concentration for juvenile red drum Sciaenops ocellatus as functions of water hardness and salinity

    E-Print Network [OSTI]

    Schlechte, John Warren

    1989-01-01T23:59:59.000Z

    and the chamber was re-aerated. The second criterion was an oxygen concentration below a minimum level set by the programme . If this cr iterion was satisfied, the chamber was re ? aer ated, but COCR estimation had failed. Once the chamber s had been r e-aer...: Dr. William H. Neill Routine metabolic rate (RMR) and cr itical oxygen concentr ation (COCR) were determined for juvenile red drum Sciaenops ocel latus acclimated to var ious combinations of water hardness (expressed as concentr ation of calcium...

  18. Viscoelastic transient of confined Red Blood Cells

    E-Print Network [OSTI]

    Gal Prado; Alexander Farutin; Chaouqi Misbah; Lionel Bureau

    2014-09-17T23:59:59.000Z

    The unique ability of a red blood cell to flow through extremely small microcapillaries depends on the viscoelastic properties of its membrane. Here, we study in vitro the response time upon flow startup exhibited by red blood cells confined into microchannels. We show that the characteristic transient time depends on the imposed flow strength, and that such a dependence gives access to both the effective viscosity and the elastic modulus controlling the temporal response of red cells. A simple theoretical analysis of our experimental data, validated by numerical simulations, further allows us to compute an estimate for the two-dimensional membrane viscosity of red blood cells, $\\eta_{mem}^{2D}\\sim 10^{-7}$ N$\\cdot$s$\\cdot$m$^{-1}$. By comparing our results with those from previous studies, we discuss and clarify the origin of the discrepancies found in the literature regarding the determination of $\\eta_{mem}^{2D}$, and reconcile seemingly conflicting conclusions from previous works.

  19. Right Turn on Red! | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    benefits for the country, helping us all save money by saving energy. Prior to the 1970's, some states already allowed drivers to turn right on a red light, but many others -...

  20. Redding Electric- Earth Advantage Rebate Program

    Broader source: Energy.gov [DOE]

    The Earth Advantage Rebate Program was designed to offer rebates to residential and business customers of Redding Electric Utility (REU) for solar PV, solar thermal, and geothermal heat pump...

  1. THE TEMPERATURES OF RED SUPERGIANTS

    SciTech Connect (OSTI)

    Davies, Ben [Astrophysics Research Institute, Liverpool John Moores University, Egerton Wharf, Birkenhead CH41 1LD (United Kingdom)] [Astrophysics Research Institute, Liverpool John Moores University, Egerton Wharf, Birkenhead CH41 1LD (United Kingdom); Kudritzki, Rolf-Peter; Gazak, Zach [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)] [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Plez, Bertrand [Laboratoire Univers et Particules de Montpellier, Universite Montpellier 2, CNRS, F-34095 Montpellier (France)] [Laboratoire Univers et Particules de Montpellier, Universite Montpellier 2, CNRS, F-34095 Montpellier (France); Trager, Scott [Kapteyn Institute, University of Groningen, P.O. Box 800, 9700-AV Groningen (Netherlands)] [Kapteyn Institute, University of Groningen, P.O. Box 800, 9700-AV Groningen (Netherlands); Lancon, Ariane [Observatoire Astronomique and CNRS UMR 7550, Universite de Strasbourg, F-67000 Strasbourg (France)] [Observatoire Astronomique and CNRS UMR 7550, Universite de Strasbourg, F-67000 Strasbourg (France); Bergemann, Maria [Max-Planck-Institute for Astrophysics, Karl-Schwarzschild-Str. 1, D-85741 Garching (Germany)] [Max-Planck-Institute for Astrophysics, Karl-Schwarzschild-Str. 1, D-85741 Garching (Germany); Evans, Chris [UK Astronomy Technology Centre, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom)] [UK Astronomy Technology Centre, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom); Chiavassa, Andrea [CNRS Laboratoire Lagrange, Universite de Nice Sophia-Antipolis, Observatoire de la Cote d'Azur, BP 4229, F-06304 Nice Cedex 4 (France)] [CNRS Laboratoire Lagrange, Universite de Nice Sophia-Antipolis, Observatoire de la Cote d'Azur, BP 4229, F-06304 Nice Cedex 4 (France)

    2013-04-10T23:59:59.000Z

    We present a re-appraisal of the temperatures of red supergiants (RSGs) using their optical and near-infrared spectral energy distributions (SEDs). We have obtained data of a sample of RSGs in the Magellanic Clouds using VLT+XSHOOTER, and we fit MARCS model atmospheres to different regions of the spectra, deriving effective temperatures for each star from (1) the TiO bands, (2) line-free continuum regions of the SEDs, and (3) the integrated fluxes. We show that the temperatures derived from fits to the TiO bands are systematically lower than the other two methods by several hundred kelvin. The TiO fits also dramatically overpredict the flux in the near-IR, and imply extinctions which are anomalously low compared to neighboring stars. In contrast, the SED temperatures provide good fits to the fluxes at all wavelengths other than the TiO bands, are in agreement with the temperatures from the flux integration method, and imply extinctions consistent with nearby stars. After considering a number of ways to reconcile this discrepancy, we conclude that three-dimensional effects (i.e., granulation) are the most likely cause, as they affect the temperature structure in the upper layers where the TiO lines form. The continuum, however, which forms at much deeper layers, is apparently more robust to such effects. We therefore conclude that RSG temperatures are much warmer than previously thought. We discuss the implications of this result for stellar evolution and supernova progenitors, and provide relations to determine the bolometric luminosities of RSGs from single-band photometry.

  2. POPULATION BIOLOGY OF RED ABAWNES, HALIOTIS RUFESCENS, IN SOUTHERN CALIFORNIA AND MANAGEMENT OF THE RED AND

    E-Print Network [OSTI]

    ABSTRACT Population dynamics of red abalones. Halwti.s rufeSC611,8 Swainson. were studied at Johnsons Lee

  3. Assessment of combustion noise in a premixed swirled combustor via Large-Eddy Simulation

    E-Print Network [OSTI]

    Nicoud, Franck

    Assessment of combustion noise in a premixed swirled combustor via Large-Eddy Simulation Camilo F noise is conducted by both direct (LES) and hybrid computations in a premixed swirled combustor. Some5] as well as to more complex cases such as gas turbine combustors [6]. Computational techniques

  4. Assessment of combustion noise in a premixed swirled combustor via Large-eddy simulation

    E-Print Network [OSTI]

    Boyer, Edmond

    Assessment of combustion noise in a premixed swirled combustor via Large-eddy simulation Camilo F direct (LES) and hybrid computations in a premixed swirled combustor. Some comparisons of the sound, 4, 5] as well as to more complex cases such as gas turbine combustors. [6] Corresponding author. Ph

  5. Large Eddy Simulation Analysis of Flow Field Inside a High-g Combustor

    E-Print Network [OSTI]

    Raman, Venkat

    Large Eddy Simulation Analysis of Flow Field Inside a High-g Combustor C. Heye , C. Lietz , J-compact combustors (UCC) are a technology for reducing the size of combustors. In these combustors the fuel and air results exhibit significant entrainment of fuel into recirculation zones inside the combustor, however

  6. Large-eddy Simulation of Realistic Gas Turbine Combustors , & Apte, S. V.

    E-Print Network [OSTI]

    Apte, Sourabh V.

    Large-eddy Simulation of Realistic Gas Turbine Combustors Moin, P. , & Apte, S. V. Center models and the numerical scheme is performed in canonical and complex combustor geometries. Finally, a multi-scale, multi-physics, turbulent reacting flow simulation in a real gas-turbine combustor

  7. Effect of fluctuating wind direction on cross natural ventilation in buildings from large eddy simulation

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    simulation Yi Jiang and Qingyan Chen* Building Technology Program Massachusetts Institute of Technology 77 direction on cross natural ventilation in building from large eddy simulation," Building and Environment, 37 in many industrial applications. To simulate natural ventilation in buildings, however, RANS modeling has

  8. Computing combustion noise by combining Large Eddy Simulations with analytical models for the propagation of waves

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Computing combustion noise by combining Large Eddy Simulations with analytical models +++++ Presented by Ignacio Duran Abstract Two mechanisms control combustion noise generation as shown by Marble. A method to calculate combustion-generated noise has been implemented in a tool called CHORUS. The method

  9. Wind Energy-Related Atmospheric Boundary Layer Large-Eddy Simulation Using OpenFOAM: Preprint

    SciTech Connect (OSTI)

    Churchfield, M.J.; Vijayakumar, G.; Brasseur, J.G.; Moriarty, P.J.

    2010-08-01T23:59:59.000Z

    This paper develops and evaluates the performance of a large-eddy simulation (LES) solver in computing the atmospheric boundary layer (ABL) over flat terrain under a variety of stability conditions, ranging from shear driven (neutral stratification) to moderately convective (unstable stratification).

  10. Evaluation of outer flaws in titanium alloys using eddy current measuring system

    SciTech Connect (OSTI)

    Chady, T.; Psuj, G.; Kowalczyk, J. [Department of Electrical and Computer Engineering, West Pomeranian University of Technology in Szczecin, ul. Sikorskiego 37, 70-313 Szczecin (Poland)

    2011-06-23T23:59:59.000Z

    In this paper results of shallow outer flaw detection in thick titanium alloy specimens is presented. In order to increase efficiency of inspections of minor defects an eddy current measuring system with a lock-in amplifier was used. The measurements were carried out for flat and cylindrical specimens with artificial flaws.

  11. Exploring the eddy current excitation invariance to infer about defect characteristics

    SciTech Connect (OSTI)

    Ribeiro, A. Lopes; Ramos, H. G. [I and M Group, Instituto de Telecomunicacoes, Lisboa, Portugal Instituto Superior Tecnico, DEEC, Lisboa (Portugal)

    2011-06-23T23:59:59.000Z

    This paper explores the excitation probe excitation field invariance when the eddy current method is applied to detect, localize and characterize material defects in conductive nonmagnetic media. The cases relative to rotational symmetry in circular solenoidal probes and translation symmetry in constant field probes are presented. The experimental data shows that this theoretical treatment is useful to preview the behavior of these probes.

  12. Numerical upscaling for the eddy-current model with stochastic magnetic materials

    SciTech Connect (OSTI)

    Eberhard, Jens P. [Computer Simulation Technology, Bad Nauheimer Strasse, 19, D-64289 Darmstadt (Germany)], E-mail: jens.eberhard@cst.com; Popovic, Dan [Simulation in Technology, University of Heidelberg, Im Neuenheimer Feld 368, D-69120 Heidelberg (Germany)], E-mail: dan.popovic@stud.uni-heidelberg.de; Wittum, Gabriel [Simulation in Technology, University of Heidelberg, Im Neuenheimer Feld 368, D-69120 Heidelberg (Germany)], E-mail: wittum@uni-hd.de

    2008-04-01T23:59:59.000Z

    This paper deals with the upscaling of the time-harmonic Maxwell equations for heterogeneous media. We analyze the eddy-current approximation of Maxwell's equations to describe the electric field for heterogeneous, isotropic magnetic materials. The magnetic permeability of the materials is assumed to have random heterogeneities described by a Gaussian random field. We apply the so-called Coarse Graining method to develop a numerical upscaling of the eddy-current model. The upscaling uses filtering and averaging procedures in Fourier space which results in a formulation of the eddy-current model on coarser resolution scales where the influence of sub-scale fluctuations is modeled by effective scale- and space-dependent reluctivity tensors. The effective reluctivity tensors can be obtained by solving local partial differential equations which contain a Laplacian as well as a curl-curl operator. We present a computational method how the equation of the combined operators can be discretized and solved numerically using an extended variational formulation compared to standard discretizations. We compare the results of the numerical upscaling of the eddy-current model with theoretical results of Eberhard [J.P. Eberhard, Upscaling for the time-harmonic Maxwell equations with heterogeneous magnetic materials, Physical Review E 72 (3), (2005)] and obtain a very good agreement.

  13. Large Eddy Simulation of Supersonic Combustion using Direct Quadrature Method of Moments

    E-Print Network [OSTI]

    Raman, Venkat

    . Supersonic combustion involves the interaction of complex gas-phase chemical reactions in a compressible flowLarge Eddy Simulation of Supersonic Combustion using Direct Quadrature Method of Moments Pratik modeling problem. In supersonic combustion, typical closures based on conserved scalar approaches cannot

  14. Stationary formulas for computing the response in eddy-current NDE

    SciTech Connect (OSTI)

    Hower, G.L.

    1987-12-01T23:59:59.000Z

    Stationary or variational formulations have been proven to be useful in a number of electromagnetic problems. This paper presents such a formulation for the response in the eddy-current NDE problem. It thus provides an approach to estimating the response due to arbitrary defects in cases where a reasonable first guess for the current distribution responsible for the scattered fields can be obtained.

  15. FRP Dowels for Concrete Pavements Darren Eddie, Junior Structural Engineer, Reid Crowther & Partners;

    E-Print Network [OSTI]

    testing ofGFRP and steel dowels using a model of a concrete pavement slab joint subjected to static= L FRP Dowels for Concrete Pavements By Darren Eddie, Junior Structural Engineer, Reid Crowther - Introduction Joints are used in concrete pavements in order to control cracking due to thermal

  16. Experimental validation of large eddy simulations of flow and heat transfer in a stationary ribbed duct

    E-Print Network [OSTI]

    Thole, Karen A.

    Elsevier Inc. All rights reserved. Keywords: Duct flow; Ribbed channels; LES 1. Introduction In an effortExperimental validation of large eddy simulations of flow and heat transfer in a stationary ribbed Abstract Accurate prediction of ribbed duct flow and heat transfer is of importance to the gas turbine

  17. Multiple Jets as PV Staircases: The Phillips Effect and the Resilience of Eddy-Transport Barriers

    E-Print Network [OSTI]

    Cambridge, University of

    Multiple Jets as PV Staircases: The Phillips Effect and the Resilience of Eddy-Transport Barriers D 2007) ABSTRACT A review is given that focuses on why the sideways mixing of potential vorticity (PV. PV mixing often produces a sideways layering or banding of the PV distribution and therefore

  18. Isentropic Slopes, Downgradient Eddy Fluxes, and the Extratropical Atmospheric Circulation Response to Tropical Tropospheric Heating

    E-Print Network [OSTI]

    to Tropical Tropospheric Heating AMY H. BUTLER NOAA/NWS/NCEP/Climate Prediction Center, Camp Springs, Maryland of the midlatitude jets and their associated eddy fluxes of heat and potential vorticity (PV). Experiments run latent heating and thus locally enhanced warming in the tropical troposphere. Here the authors provide

  19. Near-Inertial Wave Wake of Hurricanes Katrina and Rita over Mesoscale Oceanic Eddies

    E-Print Network [OSTI]

    Miami, University of

    Near-Inertial Wave Wake of Hurricanes Katrina and Rita over Mesoscale Oceanic Eddies BENJAMIN; Jaimes and Shay 2009, hereafter JS09). These robust mesoscale oceanic features are present at any time (Jaimes 2009). This mesoscale ocean variability imposed important dynamical constraints on the OML

  20. Mixed Layer Cooling in Mesoscale Oceanic Eddies during Hurricanes Katrina and Rita

    E-Print Network [OSTI]

    Miami, University of

    Mixed Layer Cooling in Mesoscale Oceanic Eddies during Hurricanes Katrina and Rita BENJAMIN JAIMES. Introduction Isotherm topography and energetic geostrophic flow in mesoscale oceanic features in the Gulf. 2000; Shay et al. 2000). The dependence of hurricane-induced OML cooling on the presence of mesoscale

  1. Massively-Parallel Spectral Element Large Eddy Simulation of a Ring-Type Gas Turbine Combustor

    E-Print Network [OSTI]

    Camp, Joshua Lane

    2012-07-16T23:59:59.000Z

    The average and fluctuating components in a model ring-type gas turbine combustor are characterized using a Large Eddy Simulation at a Reynolds number of 11,000, based on the bulk velocity and the mean channel height. A spatial filter is applied...

  2. SOUTHERN OCEAN EDDY MIXING AND THE FORMATION OF MODE WATERS J.B. Salle, R. Morrow

    E-Print Network [OSTI]

    fronts (PF, SAF and SAF- N). Sallee, J.B. N. Wienders, K. Speer and R.A. Morrow, 2006. Formation.B; Morrow, R. ; Speer, K., 2008. Eddy heat diffusion and Subantarctic Mode Water formation, Geophys. Res. Lett, 35, L05607, doi:10.1029/2007GL032827 Salle, J.B. Morrow, R.; Speer, K. and Lumpkin, R

  3. Eddy Heat Flux in the Southern Ocean: Response to Variable Wind Forcing ANDREW MCC. HOGG

    E-Print Network [OSTI]

    Miami, University of

    Eddy Heat Flux in the Southern Ocean: Response to Variable Wind Forcing ANDREW MCC. HOGG Australian processes. The authors also test the model response to long-term changes in wind forcing, including steadily1925.1 2008 American Meteorological Society #12;Given the dominant role of wind forcing in the South

  4. A Greenland Sea Perspective on the Dynamics of Postconvective Eddies* K. I. C. OLIVER

    E-Print Network [OSTI]

    Stevens, David

    A Greenland Sea Perspective on the Dynamics of Postconvective Eddies* K. I. C. OLIVER School and 2) to provide a theoretical context for recent observations of SCVs in the Greenland Sea hundred days. These findings may explain the observed accumulation and longevity of SCVs at the Greenland

  5. Characterization of niobium, tantalum and chromium sputtered coatings on steel using eddy currents

    E-Print Network [OSTI]

    Danon, Yaron

    Characterization of niobium, tantalum and chromium sputtered coatings on steel using eddy currents for characterization of niobium, tantalum and chromium sputtered coating on steel is presented in this paper. Resistivity maps of the niobium, tantalum and chromium coated samples were constructed and are shown

  6. On physical interpretation of two dimensional time-correlations regarding time delay velocities and eddy shaping

    SciTech Connect (OSTI)

    Fedorczak, N. [Center for Momentum Transport and Flow Organization, University of California at San Diego, San Diego, California 92093 (United States); CEA, IRFM, F-13108 Saint-Paul-Lez-Durance (France); Manz, P. [Center for Momentum Transport and Flow Organization, University of California at San Diego, San Diego, California 92093 (United States); Max-Planck-Institut feur Plasmaphysik, Association Euratom-IPP, 85748Garching (Germany); Thakur, S. C.; Xu, M.; Tynan, G. R. [Center for Momentum Transport and Flow Organization, University of California at San Diego, San Diego, California 92093 (United States); Xu, G. S.; Liu, S. C. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)

    2012-12-15T23:59:59.000Z

    Time delay estimation (TDE) techniques are frequently used to estimate the flow velocity from fluctuating measurements. Tilted structures carried by the flow lead to misinterpretation of the time delays in terms of velocity direction and amplitude. It affects TDE measurements from probes, and is also intrinsically important for beam emission spectroscopy and gas puff imaging measurements. Local eddy shapes estimated from 2D fluctuating field are necessary to gain a more accurate flow estimate from TDE, as illustrated by Langmuir probe array measurements. A least square regression approach is proposed to estimate both flow field and shaping parameters. The technique is applied to a test case built from numerical simulation of interchange fluctuations. The local eddy shape does not only provide corrections for the velocity field but also quantitative information about the statistical interaction mechanisms between local eddies and E Multiplication-Sign B flow shear. The technique is then tested on gaz puff imaging data collected at the edge of EAST tokamak plasmas. It is shown that poloidal asymmetries of the fluctuation fields-velocity and eddy shape-are consistent at least qualitatively with a ballooning type of turbulence immersed in a radially sheared equilibrium flow.

  7. Divergent Eddy Heat Fluxes in the Kuroshio Extension at 14481488E. Part I: Mean Structure

    E-Print Network [OSTI]

    Rhode Island, University of

    and the upper-ocean thermal front. EHFs associated with the internal mode are completely rotational. DEHFs were resulted in a mean-to-eddy potential energy conversion rate that peaked midthermocline with a magnitude and a nearly depth-independent external mode measured in the deep ocean. As a useful by

  8. J. Phys. Oceanogr. in press, accepted May 2001 Can eddies set ocean stratification?

    E-Print Network [OSTI]

    Karsten, Richard

    J. Phys. Oceanogr. in press, accepted May 2001 Can eddies set ocean stratification? John Marshall of penetration of a warm lens created by a surface buoyancy flux and Ekman pumping in an initially homogeneous thermocline in the ocean. 1. Introduction In the Earth's troposphere, radiative-convective imbalances lead

  9. Numerical Investigation of a Transverse Jet in a Supersonic Crossflow using Large Eddy Simulation

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Numerical Investigation of a Transverse Jet in a Supersonic Crossflow using Large Eddy Simulation injected fuel jets in hot supersonic crossflows. This paper describes the numerical algorithm being used into a supersonic crossflow computed on a coarse mesh. These results are discussed and similarity

  10. Conjugate Heat Transfer with Large Eddy Simulation for Gas Turbine Components.

    E-Print Network [OSTI]

    Nicoud, Franck

    Conjugate Heat Transfer with Large Eddy Simulation for Gas Turbine Components. Florent Duchaine constraint for GT (gas turbines). Most existing CHT tools are developped for chained, steady phenomena. A film-cooled turbine vane is then studied. Thermal conduction in the blade implies lower wall

  11. Generation of strong mesoscale eddies by weak ocean gyres by Michael A. Spall1

    E-Print Network [OSTI]

    Generation of strong mesoscale eddies by weak ocean gyres by Michael A. Spall1 ABSTRACT The generation of strong mesoscale variability through instability of the large-scale circulation in the interior with the scaling theory. 1. Introduction It is now well recognized that the kinetic energy of the mesoscale

  12. MFR PAPER 1229 Red Snappers of the Carolina Coast

    E-Print Network [OSTI]

    Coast to the Campeche Banks. A closely related species, the Caribbean red snapper, Lutjanus pur- pureus

  13. Improved ``Optical Highlighter'' Probes Derived from Discosoma Red Fluorescent Protein

    E-Print Network [OSTI]

    Marchant, Jonathan

    , Minneapolis, Minnesota ABSTRACT The tetrameric red fluorescent protein, DsRed, undergoes a rapid red to green-emitting species of DsRed and an enhancement of emission from the ``immature'' green species, likely caused by dequenching of fluorescence resonance energy transfer occurring within the protein tetramer. Here, we have

  14. Newtonian gravity, red shift, confinement, asymptotic freedom and quarks oscillations

    E-Print Network [OSTI]

    G. Quznetsov

    2008-10-18T23:59:59.000Z

    Quarks oscillations give the Newtonian gravity law, the red shift, the confinement and the asymptotic freedom.

  15. Application of Resonant Frequency Eddy Current Technique on a Shot-Peened Nickel-Based Engine-Grade Material

    SciTech Connect (OSTI)

    Ko, Ray T.; Sathish, Shamachary; Boehnlein, Thomas R. [Structural Integrity Division, University of Dayton Research Institute, 300 College Park Drive, Dayton, Ohio 45469-0120 (United States); Blodgett, Mark P. [Metals, Ceramics, and NDE Division, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433 (United States)

    2007-03-21T23:59:59.000Z

    The shot peening conditions of a nickel-based engine-grade material were evaluated using a novel eddy current measurement technique. With this technique, the shift of a resonant frequency was found to be dependent on variables which also affect conventional eddy current testing. The cable effect is another important variable, which is often neglected in a routine eddy current testing, is also discussed. Experimental results showed that at high frequencies, the shot peening conditions were easily distinguishable using this frequency shift technique.

  16. Conserving Scotland's Red Squirrels Scotland supports an estimated 75% of the UK red squirrel population. Although one

    E-Print Network [OSTI]

    to save the red squirrel for future generations. We will continue to be involved with wider partnerships is co-ordinated nationwide. Public involvement is crucial to saving red squirrels in Scotland and we are delighted to support this through projects such as Saving Scotland's Red Squirrels, Red Squirrels

  17. Our Energy Independence- A Live Chat With Dr. Arun Majumdar

    Broader source: Energy.gov [DOE]

    Join Dr. Arun Majumdar at 2 PM ET for a live, two-way conversation about the investments we're making to build the clean energy infrastructure of the future.

  18. CLIMAR-III Participants List Dr Robert J. Allan

    E-Print Network [OSTI]

    j.g.t.hill@rl.ac.uk Dr Milan Hodzic Meteorological and Hydrological Service of Croatia, Marine Meteorological Center Glagoljaska 11 HR - 21000 SPLIT CROATIA hodzic@cirus.dhz.hr Ewa Jakusik Institute

  19. Edition No 11 October 2005 Dr Robert Taylor

    E-Print Network [OSTI]

    posts are being made in the areas of medical robotics and hybrid vehicles. Congratulations to Dimitra Dario Di Maio, Research Assistant working for David Ewins, started on 1st September. Dr Simon Medina

  20. Upholding Dr. King's Dream and Inspiring the Next Generation...

    Energy Savers [EERE]

    uphold their strength of character-all values at the center of Dr. King's dream. Chris Smith, the Department's Assistant Secretary for the Office of Fossil Energy, also encouraged...