Sample records for hydraulic laboratory environment

  1. LMH Laboratory for Hydraulic Machines Supervisor

    E-Print Network [OSTI]

    Diggavi, Suhas

    rotating (runner-impeller) and stationary (guide vane and stay vane) blades in pump-turbine hydraulicLMH Laboratory for Hydraulic Machines Supervisor: Dr. Mohamed Farhat (LMH) Doctoral Assistants hydraulic lift surface in pump mode and detail the flow behaviour under these conditions. This is a first

  2. Laboratory modeling of hydraulic dredges and design of dredge carriage for laboratory facility

    E-Print Network [OSTI]

    Glover, Gordon Jason

    2002-01-01T23:59:59.000Z

    of hydraulic dredge equipment have proven useful for obtaining qualitative results. The new Coastal Engineering Laboratory at Texas A&M University is equipped with model dredge testing facilities ideal for performing such experiments. The tow/dredge carriage...

  3. Environment | Argonne National Laboratory

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

    Science Ecological Resources and Systems Environmental Security and Restoration Land and Renewable Resources Radiation and Chemical Risk Management Environment True energy...

  4. Hydraulic manipulator design, analysis, and control at Oak Ridge National Laboratory

    SciTech Connect (OSTI)

    Kress, R.L.; Jansen, J.F. [Oak Ridge National Lab., TN (United States). Robotics and Process Systems Div.; Love, L.J. [Oak Ridge Inst. for Science and Education, TN (United States); Basher, A.M.H. [South Carolina State Univ., Orangeburg, SC (United States)

    1996-09-01T23:59:59.000Z

    To meet the increased payload capacities demanded by present-day tasks, manipulator designers have turned to hydraulics as a means of actuation. Hydraulics have always been the actuator of choice when designing heavy-life construction and mining equipment such as bulldozers, backhoes, and tunneling devices. In order to successfully design, build, and deploy a new hydraulic manipulator (or subsystem) sophisticated modeling, analysis, and control experiments are usually needed. To support the development and deployment of new hydraulic manipulators Oak Ridge National Laboratory (ORNL) has outfitted a significant experimental laboratory and has developed the software capability for research into hydraulic manipulators, hydraulic actuators, hydraulic systems, modeling of hydraulic systems, and hydraulic controls. The hydraulics laboratory at ORNL has three different manipulators. First is a 6-Degree-of-Freedom (6-DoF), multi-planer, teleoperated, flexible controls test bed used for the development of waste tank clean-up manipulator controls, thermal studies, system characterization, and manipulator tracking. Finally, is a human amplifier test bed used for the development of an entire new class of teleoperated systems. To compliment the hardware in the hydraulics laboratory, ORNL has developed a hydraulics simulation capability including a custom package to model the hydraulic systems and manipulators for performance studies and control development. This paper outlines the history of hydraulic manipulator developments at ORNL, describes the hydraulics laboratory, discusses the use of the equipment within the laboratory, and presents some of the initial results from experiments and modeling associated with these hydraulic manipulators. Included are some of the results from the development of the human amplifier/de-amplifier concepts, the characterization of the thermal sensitivity of hydraulic systems, and end-point tracking accuracy studies. Experimental and analytical results are included.

  5. Exploring the physicochemical processes that govern hydraulic fracture through laboratory

    E-Print Network [OSTI]

    Belmonte A; Connelly P

    ) containing model boreholes as an analog to hydraulic fracturing with various fracture-driving fluids. The

  6. Plant, Cell and Environment {^996) 19, 939-948 Developmental patterns of above-ground hydraulic

    E-Print Network [OSTI]

    Mencuccini, Maurizio

    Plant, Cell and Environment {^996) 19, 939-948 Developmental patterns of above-ground hydraulic, Mayfield Road, EH93JU, UK ABSTRACT Hydraulic resistance to water flow was measured in branches and stems hydraulic conductance than branches of the same diameter at tbe tree top. Within branches, most

  7. Laboratory imaging of stimulation fluid displacement from hydraulic fractures

    SciTech Connect (OSTI)

    Tidwell, V. [Sandia National Lab., Albuquerque, NM (United States); Parker, M. [SPE, Richardson, TX (United States)

    1996-11-01T23:59:59.000Z

    Laboratory experiments were conducted to physically investigate the processes governing stimulation fluid displacement from hydraulic fractures. Experiments were performed on two scales: meter-scale in a 1500 cm{sup 2} sand pack and core-scale in a 65 cm{sup 2} API linear conductivity cell. High-resolution light transmission imaging was employed at the meter-scale to visualize and quantify processes governing fluid displacement. For comparison, complimentary tests were performed using an API conductivity cell under ambient test conditions and at elevated closure stress. In these experiments viscous fingering and gravity drainage were identified as the dominant processes governing fluid displacement. Fluid viscosity was found to dictate the relative importance of the competing displacement processes and ultimately determine the residual liquid saturation of the sand pack. The process by which fluid displacement occurs was seen to effect the shape of both the gas and liquid phase relative permeability functions. Knowledge of such viscosity/relative permeability relationships may prove useful in bounding predictions of post-stimulation recovery of gels from the fracture pack.

  8. Laboratory Testing to Address the Potential for Damaging Hydraulic Pressure in the Concrete Tie Rail Seat

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    Laboratory Testing to Address the Potential for Damaging Hydraulic Pressure in the Concrete Tie of different combinations of concrete ties and fastening system components to RSD (1). TTC's tests resulted) is the most critical problem with concrete tie performance on North American freight railroads. Currently

  9. Hydraulic Hybrid and Conventional Parcel Delivery Vehicles' Measured Laboratory Fuel Economy on Targeted Drive Cycles

    SciTech Connect (OSTI)

    Lammert, M. P.; Burton, J.; Sindler, P.; Duran, A.

    2014-10-01T23:59:59.000Z

    This research project compares laboratory-measured fuel economy of a medium-duty diesel powered hydraulic hybrid vehicle drivetrain to both a conventional diesel drivetrain and a conventional gasoline drivetrain in a typical commercial parcel delivery application. Vehicles in this study included a model year 2012 Freightliner P100H hybrid compared to a 2012 conventional gasoline P100 and a 2012 conventional diesel parcel delivery van of similar specifications. Drive cycle analysis of 484 days of hybrid parcel delivery van commercial operation from multiple vehicles was used to select three standard laboratory drive cycles as well as to create a custom representative cycle. These four cycles encompass and bracket the range of real world in-use data observed in Baltimore United Parcel Service operations. The NY Composite cycle, the City Suburban Heavy Vehicle Cycle cycle, and the California Air Resources Board Heavy Heavy-Duty Diesel Truck (HHDDT) cycle as well as a custom Baltimore parcel delivery cycle were tested at the National Renewable Energy Laboratory's Renewable Fuels and Lubricants Laboratory. Fuel consumption was measured and analyzed for all three vehicles. Vehicle laboratory results are compared on the basis of fuel economy. The hydraulic hybrid parcel delivery van demonstrated 19%-52% better fuel economy than the conventional diesel parcel delivery van and 30%-56% better fuel economy than the conventional gasoline parcel delivery van on cycles other than the highway-oriented HHDDT cycle.

  10. Laboratory evaluation of the constant rate of strain and constant head techniques for measurement of the hydraulic conductivity of fine grained soils

    E-Print Network [OSTI]

    Adams, Amy Lynn

    2011-01-01T23:59:59.000Z

    This thesis evaluates the constant rate of strain and constant head techniques for measurement of the hydraulic conductivity of fine grained soils. A laboratory program compares hydraulic conductivity measurements made ...

  11. Sandia National Laboratories: Climate/Environment

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

    ClimateEnvironment ClimateEnvironment On January 27, 2011, in ClimateEnvironment Sensing and Monitoring Modeling and Analysis Carbon Management Water & Environment Publications...

  12. Mixed Reality Environment for Web-Based Laboratory Interactive Learning

    E-Print Network [OSTI]

    1(8) Mixed Reality Environment for Web-Based Laboratory Interactive Learning Ashraf Saleem1 , Kasim learning, Mixed reality environment, Laboratory learning, Fuzzy logic, Learner modeling. Abstract environment for e-learning of applied sciences by incorporating hal-00197209,version1-14Dec2007 Author

  13. History of the 185-/189-D thermal hydraulics laboratory and its effects on reactor operations at the Hanford Site

    SciTech Connect (OSTI)

    Gerber, M.S.

    1994-09-01T23:59:59.000Z

    The 185-D deaeration building and the 189-D refrigeration building were constructed at Hanford during 1943 and 1944. Both buildings were constructed as part of the influent water cooling system for D reactor. The CMS studies eliminated the need for 185-D function. Early gains in knowledge ended the original function of the 189-D building mission. In 1951, 185-D and 189-D were converted to a thermal-hydraulic laboratory. The experiments held in the thermal-hydraulic lab lead to historic changes in Hanford reactor operations. In late 1951, the exponential physics experiments were moved to the 189-D building. In 1958, new production reactor experiments were begun in 185/189-D. In 1959, Plutonium Recycle Test Reactor experiments were added to the 185/189-D facility. By 1960, the 185/189-D thermal hydraulics laboratory was one of the few full service facilities of its type in the nation. During the years 1961--1963 tests continued in the facility in support of existing reactors, new production reactors, and the Plutonium Recycle Test Reactor. In 1969, Fast Flux Test Facility developmental testings began in the facility. Simulations in 185/189-D building aided in the N Reactor repairs in the 1980`s. In 1994 the facility was nominated to the National Register of Historic Places, because of its pioneering role over many years in thermal hydraulics, flow studies, heat transfer, and other reactor coolant support work. During 1994 and 1995 it was demolished in the largest decontamination and decommissioning project thus far in Hanford Site history.

  14. Hydraulic Isolation of Waste Disposal Areas at Oak Ridge National Laboratory

    SciTech Connect (OSTI)

    Cater, F.; Cange, J.B.; Lambert, R.K. [Bechtel Jacobs Company LLC, Oak Ridge, TN (United States); Spurling, R. [B and W Technical Services Y-12 LLC, National Security Complex, Oak Ridge, TN (United States); Julius, J.F.K.; Skinner, R. [United States Department of Energy, Oak Ridge Operations Office, Oak Ridge, TN (United States)

    2008-07-01T23:59:59.000Z

    The Melton Valley watershed at Oak Ridge National Laboratory (ORNL) is the location of several large waste disposal areas that received waste from more than 50 years of operation, production, and research activities at ORNL and the U.S. Atomic Energy Commission's Southern Regional Burial Ground for wastes from more than 50 other facilities. The major burial grounds in the valley are Solid Waste Storage Areas (SWSAs) 4, 5, and 6, where wastes were buried in more than 850 unlined trenches and more than 1500 unlined auger holes. The area includes 3 seepage pits and 3 gravel-filled trenches used by ORNL for the disposal of liquid low level wastes. The burial grounds contained several hundred thousand cubic yards of waste, and the combined inventory of the burial grounds and liquid disposal sites was well over 1 million curies. The Record of Decision for Interim Actions for the Melton Valley Watershed at ORNL selected hydraulic isolation of major waste sources as the primary mechanism for remediation of the watershed. Isolation was to be accomplished mainly through the construction of multi-layer caps over the burial grounds, seepage pits, and trenches. Groundwater diversion and collection systems were installed along the up-gradient and down-gradient edges, respectively, of selected caps to enhance the performance of the isolation system. The waste areas were covered with both Resource Conservation and Recovery Act (RCRA)-type and isolation multi-layer caps. A total of 13 multi-layer caps covering 58.7 hectares (ha) (plan view) were constructed in Melton Valley between 2003 and 2006. The project encountered considerable challenges, not the least of which was its scale, involving simultaneous construction activities at widely scattered sites across the 430-ha watershed. Detailed planning and coordination enabled year-round fieldwork, an essential requirement necessary to retain a skilled, experienced workforce and meet the contract milestone for completion. Other factors key to the success of the project involved the use of an on-site borrow area and construction of a dedicated haul road for transfer of materials from the borrow area to the capping sites. In summary: Remedy effectiveness data obtained during 2007 for the Melton Valley ROD actions collectively indicate that the remedy is generally operating and functioning as planned. Contaminant releases of the principal contaminants of concern in Melton Valley have decreased significantly during and since remediation of the contaminant source areas. Hydrologic isolation systems at the burial grounds functioned as intended as demonstrated by attainment of groundwater level goals in most areas. (authors)

  15. Integrating environment, safety and health training at a national laboratory

    SciTech Connect (OSTI)

    Larson, D.R.

    1993-01-01T23:59:59.000Z

    In a multi-purpose research laboratory, innovation and creativity are required to satisfy the training requirements for hazards to people and the environment. A climate that encourages excellence in research and enhances hazard minimization skills is created by combining technical expertise with instructional design talent.

  16. Experimental laboratory system to generate high frequency test environments

    SciTech Connect (OSTI)

    Gregory, D.L.; Paez, T.L.

    1991-01-01T23:59:59.000Z

    This is an extension of two previous analytical studies to investigate a technique for generating high frequency, high amplitude vibration environments. These environments are created using a device attached to a common vibration exciter that permits multiple metal on metal impacts driving a test surface. These analytical studies predicted that test environments with an energy content exceeding 10 kHz could be achieved using sinusoidal and random shaker excitations. The analysis predicted that chaotic vibrations yielding random like test environments could be generated from sinusoidal inputs. In this study, a much simplified version of the proposed system was fabricated and tested in the laboratory. Experimental measurements demonstrate that even this simplified system, utilizing a single impacting object, can generate environments on the test surface with significant frequency content in excess of 40 kHz. Results for sinusoidal shaker inputs tuned to create chaotic impact response are shown along with the responses due to random vibration shaker inputs. The experiments and results are discussed. 4 refs., 5 figs.

  17. Brookhaven National Laboratory 2008 Site Environment Report Volume 1

    SciTech Connect (OSTI)

    Brookhaven National Laboratory

    2009-10-01T23:59:59.000Z

    Brookhaven National Laboratory (BNL) prepares an annual Site Environmental Report (SER) in accordance with DOE Order 231.1A, Environment, Safety and Health Reporting of the U.S. Department of Energy. The report is written to inform the public, regulators, employees, and other stakeholders of the Laboratory's environmental performance during the calendar year in review. Volume I of the SER summarizes environmental data; environmental management performance; compliance with applicable DOE, federal, state, and local regulations; and performance in restoration and surveillance monitoring programs. BNL has prepared annual SERs since 1971 and has documented nearly all of its environmental history since the Laboratory's inception in 1947. Volume II of the SER, the Groundwater Status Report, also is prepared annually to report on the status of and evaluate the performance of groundwater treatment systems at the Laboratory. Volume II includes detailed technical summaries of groundwater data and its interpretation, and is intended for internal BNL users, regulators, and other technically oriented stakeholders. A brief summary of the information contained in Volume II is included in this volume in Chapter 7, Groundwater Protection. Both reports are available in print and as downloadable files on the BNL web page at http://www.bnl.gov/ewms/ser/. An electronic version on compact disc is distributed with each printed report. In addition, a summary of Volume I is prepared each year to provide a general overview of the report, and is distributed with a compact disc containing the full report.

  18. An automated tool for three types of saturated hydraulic conductivity...

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

    automated tool for three types of saturated hydraulic conductivity laboratory measurements. An automated tool for three types of saturated hydraulic conductivity laboratory...

  19. HYDRAULIC CEMENT PREPARATION FROM LURGI SPENT SHALE

    E-Print Network [OSTI]

    Mehta, P.K.

    2013-01-01T23:59:59.000Z

    Investigations on hydraulic cement from spent oil shale,"April 16-18, 1980 HYDRAULIC CEMENT PREPARATION FROM LURGIpressi ve b strength, MPa this cement in moist environments.

  20. Biased migration of confined neutrophil-like cells in asymmetric hydraulic environments

    E-Print Network [OSTI]

    Mahadevan, L.

    Cells integrate multiple measurement modalities to navigate their environment. Soluble and substrate-bound chemical gradients and physical cues have all been shown to influence cell orientation and migration. Here we ...

  1. Experiences with electronic laboratory notebook implementation in a materials R&D environment at Sandia National Laboratories.

    SciTech Connect (OSTI)

    Thornberg, Steven Michael

    2010-03-01T23:59:59.000Z

    Changing paradigms from paper laboratory notebooks to electronic creates challenges. Meeting regulatory requirements in an R&D environment drives thorough documentation. Creating complete experimental records is easier using electronic laboratory notebooks. Supporting investigations through re-creating experimental conditions is greatly facilitated using an ELN.

  2. A Laboratory Environment for Applications Oriented Vision and Manipulation

    E-Print Network [OSTI]

    Horn, Berthold K.P.

    1976-05-01T23:59:59.000Z

    This report is a brief summary guide to work done in the M.I.T. Artificial Intelligence Laboratory directed at the production of tools for productivity technology research. For detailed coverage of the work, readers ...

  3. E.O. Lawrence Berkeley National Laboratory Environment, Health, and Safety Division

    E-Print Network [OSTI]

    material areas (work areas where unsealed radioactive material is handled) and radioactive material storage) 75A Old Hazardous Waste Facility 75S Tritium Storage Locker 76 Radioanalytical Laboratory 83 LifeE.O. Lawrence Berkeley National Laboratory Environment, Health, and Safety Division Environmental

  4. Uncertainty in the maximum principal stress estimated from hydraulic fracturing Measurements due to the presence of the induced fracture

    E-Print Network [OSTI]

    Rutqvist, Jonny; Tsang, Chin-fu; Stephansson, Ove

    2000-01-01T23:59:59.000Z

    reopening during hydraulic fracturing stress determinations.Laboratory study of hydraulic fracturing pressure data?Howevaluation of hydraulic fracturing stress measurement

  5. Scaling hydraulic properties of a macroporous soil Binayak P. Mohanty

    E-Print Network [OSTI]

    Mohanty, Binayak P.

    Scaling hydraulic properties of a macroporous soil Binayak P. Mohanty U.S. Salinity Laboratory, Riverside, California Abstract. Macroporous soils exhibit significant differences in their hydraulic properties for different pore domains. Multimodal hydraulic functions may be used to describe

  6. The Laboratory Environment of the URI Integrated Computer Engineering Design (ICED) Curriculum

    E-Print Network [OSTI]

    Uht, Augustus K.

    The Laboratory Environment of the URI Integrated Computer Engineering Design (ICED) Curriculum continuity. URI's new ICED undergraduate cur­ riculum addresses these issues through a comprehensive multi environment of the ICED curriculum. The pedagogical use of industrial CAD logic design and synthesis tools

  7. The U.S. Nuclear Regulatory Commission Thermal-Hydraulic Research Program: Maintaining expertise in a changing environment

    SciTech Connect (OSTI)

    Sheron, B.W.; Shotkin, L.M.; Baratta, A.J.

    1993-04-01T23:59:59.000Z

    Throughout the 1970s and early 1980s, the U.S. Nuclear Regulatory Commission`s (NRC`s) thermal-hydraulic research program enjoyed ample funding, sponsored extensive experimental and analytical development programs, and attracted worldwide expertise. With the completion of the major experimental programs and with the promulgation of the revised emergency core-cooling system rule, both the funding and prominence of thermal-hydraulic research at the NRC have declined in recent years. This has led justifiably to the concern by some that the program may no longer have the minimal elements needed to maintain both expertise and world-class status. The purpose of this article is to describe the NRC`s current thermal-hydraulic research program and to show how this program ensures maintenance of a viable, robust research effort and retention of needed expertise and international leadership.

  8. Environment, Safety, Health, and Assurance | The Ames Laboratory

    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 3,625govInstrumentstdmadapInactiveVisitingContractElectron-StateEnergyHeavyDepartmentebbaEnvironment...

  9. Advanced Reactor Thermal Hydraulic Modeling | Argonne Leadership...

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

    Advanced Reactor Thermal Hydraulic Modeling PI Name: Paul Fischer PI Email: fischer@mcs.anl.gov Institution: Argonne National Laboratory Allocation Program: INCITE Allocation Hours...

  10. Research on the Use of Robotics in Hazardous Environments at Sandia National Laboratories

    SciTech Connect (OSTI)

    Kwok, Kwan S.

    1999-05-04T23:59:59.000Z

    Many hazardous material handling needs exist in remote unstructured environments. Currently these operations are accomplished using personnel in direct contact with the hazards. A safe and cost effective alternative to this approach is the use of intelligent robotic systems for safe handling, packaging, transport, and even excavation of hazardous materials. The Intelligent Systems and Robotics Center of Sandia National Laboratories has developed and deployed robotic technologies for use in hazardous environments, three of which have been deployed in DOE production facilities for handling of special nuclear materials. Other systems are currently under development for packaging special nuclear materials. This paper presents an overview of the research activities, including five delivered systems, at %ndia National Laboratories on the use of robotics in hazardous environments.

  11. Hydraulic Fracturing (Vermont)

    Broader source: Energy.gov [DOE]

    Vermont prohibits hydraulic fracturing or the collection, storage, or treatment of wastewater from hydraulic fracturing

  12. Pacific Northwest Laboratory annual report for 1990 to the Assistant Secretary for Environment, Safety, and Health

    SciTech Connect (OSTI)

    Faust, L.G.; Moraski, R.V.; Selby, J.M.

    1991-05-01T23:59:59.000Z

    Part 5 of the 1990 Annual Report to the US Department of Energy's Assistant Secretary for Environment, Safety, and Health presents Pacific Northwest Laboratory's progress on work performed for the Office of Environmental Guidance, the Office of Environmental Compliance, the Office of Environmental Audit, the Office of National Environmental Policy Act Project Assistance, the Office of Nuclear Safety, the Office of Safety Compliance, and the Office of Policy and Standards. For each project, as identified by the Field Work Proposal, there is an article describing progress made during fiscal year 1990. Authors of these articles represent a broad spectrum of capabilities derived from five of the seven technical centers of the Laboratory, reflecting the interdisciplinary nature of the work.

  13. ROBOTICS IN HAZARDOUS ENVIRONMENTS - REAL DEPLOYMENTS BY THE SAVANNAH RIVER NATIONAL LABORATORY

    SciTech Connect (OSTI)

    Kriikku, E.; Tibrea, S.; Nance, T.

    2010-09-27T23:59:59.000Z

    The Research & Development Engineering (R&DE) section in the Savannah River National Laboratory (SRNL) engineers, integrates, tests, and supports deployment of custom robotics, systems, and tools for use in radioactive, hazardous, or inaccessible environments. Mechanical and electrical engineers, computer control professionals, specialists, machinists, welders, electricians, and mechanics adapt and integrate commercially available technology with in-house designs, to meet the needs of Savannah River Site (SRS), Department of Energy (DOE), and other governmental agency customers. This paper discusses five R&DE robotic and remote system projects.

  14. THERMAL HYDRAULICS KEYWORDS: thermal hydraulics,

    E-Print Network [OSTI]

    Smith, Barton L.

    -fluid modeling of nuclear reactor systems. Thermal-hydraulic analysis codes such as RELAP5-3D ~Ref. 1! and FLICA regions of the system. In fact, the CFD code FLUENT has previously been coupled to RELAP5-3D ~Refs. 3

  15. Ecological environment of the proposed site for the Compact Ignition Tokamak at Princeton Plasma Physics Laboratory

    SciTech Connect (OSTI)

    Not Available

    1987-12-01T23:59:59.000Z

    This report gives a description of the exological environment of D-site and the surrounding area at Princeton Plasma Physics Laboratory (PPPL) near Princeton, New Jersey. D-site at PPL is the proposed location for construction of a new fusion test facility, the Compact Ignition Tokamak (CIT). This report was prepared as supplemental information for an Environmental Assessment for the proposed CIT at PPL. The report characterizes the vegetation and wildlife occuring at and near the site and describes the water quality and aquatic ecology of Bee Brook. No threatened or endangered plant or animal species are known to occur in the area, although suitable habitat exists for some species. The occurrence of a forested wetland north of the site is discussed. 9 refs., 2 figs.

  16. Characterization of the seismic environment at the Sanford Underground Laboratory, South Dakota

    E-Print Network [OSTI]

    Jan Harms; Fausto Acernese; Fabrizio Barone; Imre Bartos; Mark Beker; J. F. J. van den Brand; Nelson Christensen; Michael Coughlin; Riccardo DeSalvo; Steven Dorsher; Jaret Heise; Shivaraj Kandhasamy; Vuk Mandic; Szabolcs Márka; Guido Müller; Luca Naticchioni; Thomas O'Keefe; David S. Rabeling; Angelo Sajeva; Tom Trancynger; Vinzenz Wand

    2010-06-03T23:59:59.000Z

    An array of seismometers is being developed at the Sanford Underground Laboratory, the former Homestake mine, in South Dakota to study the properties of underground seismic fields and Newtonian noise, and to investigate the possible advantages of constructing a third-generation gravitational-wave detector underground. Seismic data were analyzed to characterize seismic noise and disturbances. External databases were used to identify sources of seismic waves: ocean-wave data to identify sources of oceanic microseisms, and surface wind-speed data to investigate correlations with seismic motion as a function of depth. In addition, sources of events contributing to the spectrum at higher frequencies are characterized by studying the variation of event rates over the course of a day. Long-term observations of spectral variations provide further insight into the nature of seismic sources. Seismic spectra at three different depths are compared, establishing the 4100-ft level as a world-class low seismic-noise environment.

  17. Thermal Hydraulic Modeling: Cross-Verification, Validation and...

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

    Aleks Obabko, Paul Fischer, and Tim Tautges, Argonne National Laboratory Thermal Hydraulic Modeling: Cross-Verification, Validation and Co-design PI Name: Paul F. Fischer PI...

  18. Sandia National Laboratories: Workshops

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

    Geoscience, Climate and Consequence Effect at Sandia National Laboratories presented on "Hydraulic Fracturing: Role of Government-Sponsored R&D." Marianne's presentation was part...

  19. Modeling Turbulent Hydraulic Fracture Near a Free Surface

    E-Print Network [OSTI]

    Modeling Turbulent Hydraulic Fracture Near a Free Surface Victor C. Tsai Seismological Laboratory consider a hydraulic fracture problem in which the crack grows parallel to a free surface, subject to fully components. wall Wall shear stress. ^· Non-dimensionalized ·. 1 Introduction Hydraulic fracture has been

  20. Modeling Turbulent Hydraulic Fracture Near a Free Surface

    E-Print Network [OSTI]

    Modeling Turbulent Hydraulic Fracture Near a Free Surface Victor C. Tsai Seismological Laboratory consider a hydraulic fracture problem in which the crack grows parallel to a free surface, subject to fully components. ^· Non-dimensionalized ·. 1 Introduction Hydraulic fracture has been studied for many years

  1. Hydraulic fracturing-1

    SciTech Connect (OSTI)

    Not Available

    1990-01-01T23:59:59.000Z

    This book contains papers on hydraulic fracturing. Topics covered include: An overview of recent advances in hydraulic fracturing technology; Containment of massive hydraulic fracture; and Fracturing with a high-strength proppant.

  2. Laboratory and Field Evidence for Long-Term Starvation Survival of Microorganisms in Subsurface Terrestrial Environments

    SciTech Connect (OSTI)

    Kieft, T.L. [Biology Dept., New Mexico Inst. of Mining and Technology, Socorro, NM (United States); Murphy, E.M. [Pacific Northwest National Lab., Richland, WA (United States); Amy, P.S.; Haldeman, D.L. [Department of Biological Sciences, University of Nevada, Las Vegas, NV (United States); Ringelberg, D. B. [Center for Environmental Biotechnology, University of Tennessee, Knoxville, TN (United States)]|[Oak Ridge National Lab., TN (United States)

    1997-12-31T23:59:59.000Z

    BIOGEOCHEMICAL MODELING OF GROUNDWATER FLOW AND NUTRIENT FLUX IN SUBSURFACE ENVIRONMENTS INDICATES THAT INHABITANT MICROORGANISMS EXPERIENCE SEVERE NUTRIENT LIMITATION. USING LABORATORY AND FIELD METHODS, WE HAVE BEEN TESTING STARVATION SURVIVAL IN SUBSURFACE MICROORGANISMS. IN MICROCOSM EXPERIMENTS, WE HAVE SHOWN THAT STRAINS OF TWO COMMONLY ISOLATED SUBSURFACE GENERA, ARTHROBACTER AND PSEUDOMONAS, ARE ABLE TO MAINTAIN VIABILITY IN LOW-NUTRIENT, NATURAL SUBSURFACE SEDIMENTS FOR OVER ONE YEAR. THESE NON-SPORE-FORMING BACTERIA UNDERGO RAPID INITIAL MINIATURIZATION FOLLOWED BY A STABILIZATION OF CELL SIZE. MEMBRANE LIPID PHOSPHOLIPID FATTY ACID (PLFA) PROFILES OF THE PSEUDOMONAS ARE CONSISTENT WITH ADAPTATION TO NUTRIENT STRESS; ARTHROBACTER APPARENTLY RESPONDS TO NUTRIENT DEPRIVATION WITHOUT ALTERING MEMBRANE PLFA. TO TEST SURVIVABILITY OF MICROORGANISMS OVER A GEOLOGIC TIME SCALE, WE CHARACTERIZED MICROBIAL COMMUNITIES IN A SEQUENCE OF UNSATURATED SEDIMENTS RANGING IN AGE FROM MODEM TO {gt}780,000 years. Sediments were relatively uniform silts in Eastern Washington State. Porewater ages at depth (measured by the chloride mass-balance approach) were as old as 3,600 years. Microbial abundance, biomass, and activities (measured by direct counts, culture counts, total PLFAs, and radiorespirometry) declined with sediment age. The pattern is consistent with laboratory microcosm studies of Microbial survival: rapid short-term change followed by long-term survival of a proportion of cells. Even the oldest sediments evinced a small but viable Microbial community. Microbial survival appeared to be a function of sediment age. Porewater age appeared to influence the markup of surviving communities, as indicated by PLFA profiles. Sites with different Porewater recharge rates and patterns of Pleistocene flooding had different communities.

  3. Pacific Northwest Laboratory annual report for 1987 to the Assistant Secretary for Environment, Safety, and Health: Part 5: Environment, safety, health, and quality assurance

    SciTech Connect (OSTI)

    Faust, L.G.; Steelman, B.L.; Selby, J.M.

    1988-02-01T23:59:59.000Z

    Part 5 of the 1987 Annual Report to the US Department of Energy's Assistant Secretary for Environment, Safety, and Health presents Pacific Northwest Laboratory's progress on work performed for the Office of Nuclear Safety, the Office of Environmental Guidance and Compliance, the Office of Environmental Audit, and the Office of National Environmental Policy Act Project Assistance. For each project, as identified by the Field Work Proposal, articles describe progress made during fiscal year 1987. Authors of these articles represent a broad spectrum of capabilities derived from five of the seven technical centers of the Laboratory, reflecting the interdisciplinary nature of the work.

  4. LABORATORY SAFETY CHECKLIST Department of Environment, Health and Safety v.1.9 July 2014 Page 1

    E-Print Network [OSTI]

    Machel, Hans

    or radioactive waste have the appropriate label. b) Refrigerators and freezers used for radioactive material storage have the appropriate label. c) Equipment used to handle or manipulate radioactive material hasLABORATORY SAFETY CHECKLIST Department of Environment, Health and Safety v.1.9 July 2014 Page 1

  5. Pacific Northwest Laboratory annual report for 1980 to the DOE Assistant Secretary for Environment. Part 2 supplement, ecological sciences

    SciTech Connect (OSTI)

    Vaughan, B.E.

    1981-06-01T23:59:59.000Z

    This supplement replaces the list of Publications and Presentations in the Pacific Northwest Laboratory Annual Report for 1980 to the Assistant Secretary for Environment, PNL-3700 PT2, Ecological Sciences. The listings in the report as previously distributed were incomplete owing to changeovers in the bibliographic-tracking system.

  6. asymmetric hydraulic fracture: Topics by E-print Network

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

    from the fractured shale 17 RPSEA UNCONVENTIONAL GAS CONFERENCE 2012: Geology, the Environment, Hydraulic Fracturing Engineering Websites Summary: Fracturing Experiment Overview...

  7. advanced hydraulic fracturing: Topics by E-print Network

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

    from the fractured shale 18 RPSEA UNCONVENTIONAL GAS CONFERENCE 2012: Geology, the Environment, Hydraulic Fracturing Engineering Websites Summary: Fracturing Experiment Overview...

  8. Formed Core Sampler Hydraulic Conductivity Testing

    SciTech Connect (OSTI)

    Miller, D. H.; Reigel, M. M.

    2012-09-25T23:59:59.000Z

    A full-scale formed core sampler was designed and functionally tested for use in the Saltstone Disposal Facility (SDF). Savannah River National Laboratory (SRNL) was requested to compare properties of the formed core samples and core drilled samples taken from adjacent areas in the full-scale sampler. While several physical properties were evaluated, the primary property of interest was hydraulic conductivity. Differences in hydraulic conductivity between the samples from the formed core sampler and those representing the bulk material were noted with respect to the initial handling and storage of the samples. Due to testing conditions, the site port samples were exposed to uncontrolled temperature and humidity conditions prior to testing whereas the formed core samples were kept in sealed containers with minimal exposure to an uncontrolled environment prior to testing. Based on the results of the testing, no significant differences in porosity or density were found between the formed core samples and those representing the bulk material in the test stand.

  9. Hydraulic pump

    SciTech Connect (OSTI)

    Polak, P.R.; Jantzen, D.E.

    1984-05-15T23:59:59.000Z

    This invention relates to an improved pump jack characterized by a hollow piston rod which telescopes down over the sucker rod to which it is clamped for reciprocating motion. The cylinder, in turn, is fastened in fixed position directly to the upper exposed end of the well casing. As fluid is introduced into the lower end of the cylinder it raises the piston into engagement with a pushrod housed in the upper cylinder head that lifts switch-actuating means associated therewith into a position operative to actuate a switch located adjacent thereto thereby causing the latter to change state and actuate a multi-function solenoid valve so as to cut off fluid flow to the cylinder. As gravity lowers the sucker rod and piston exhausting the hydraulic fluid therebeneath, an adjustable stop engages the pushrod from above so as to return it together with the switch-actuating means associated therewith to their original positions thereby resetting the switch to complete the operating cycle.

  10. Application of system simulation for engineering the technical computing environment of the Lawrence Livermore National Laboratorie

    SciTech Connect (OSTI)

    Boyd, V; Edmunds, T; Minuzzo, K; Powell, E; Roche, L

    1998-09-15T23:59:59.000Z

    This report summarizes an investigation performed by Lawrence Livermore National Laboratory? s (LLNL) Scientific Computing & Communications Department (SCCD) and the Garland Location of Raytheon Systems Company (RSC) from April through August.1998. The study assessed the applicability and benefits of utilizing System Simulation in architecting and deploying technical computing assets at LLNL, particularly in support of the ASCI program and associated scientific computing needs. The recommendations and other reported findings reflect the consensus of the investigation team. The investigation showed that there are potential benefits to performing component level simulation within SCCD in support of the ASCI program. To illustrate this, a modeling exercise was conducted by the study team that generated results consistent with measured operational performance. This activity demonstrated that a relatively modest effort could improve the toolset for making architectural trades and improving levels of understanding for managing operational practices. This capability to evaluate architectural trades was demonstrated by evaluating some of the productivity impacts of changing one of the design parameters of an existing file transfer system. The use of system simulation should be tailored to the local context of resource requirements/limitations, technology plans/processes/issues, design and deployment schedule, and organizational factors. In taking these matters into account, we recommend that simulation modeling be employed within SCCD on a limited basis for targeted engineering studies, and that an overall performance engineering program be established to better equip the Systems Engineering organization to direct future architectural decisions and operational practices. The development of an end-to-end modeling capability and enterprise-level modeling system within SCCD is not warranted in view of the associated development requirements and difficulty in determining firm operational performance requirements in advance of the critical architectural decisions. These recommendations also account for key differences between the programmatic and institutional environments at LLNL and RSC.

  11. Bubble visualization in a simulated hydraulic jump

    E-Print Network [OSTI]

    Witt, Adam; Shen, Lian

    2013-01-01T23:59:59.000Z

    This is a fluid dynamics video of two- and three-dimensional computational fluid dynamics simulations carried out at St. Anthony Falls Laboratory. A transient hydraulic jump is simulated using OpenFOAM, an open source numerical solver. A Volume of Fluid numerical method is employed with a realizable k-epsilon turbulence model. The goal of this research is to model the void fraction and bubble size in a transient hydraulic jump. This fluid dynamics video depicts the air entrainment characteristics and bubble behavior within a hydraulic jump of Froude number 4.82.

  12. Pacific Northwest Laboratory annual report for 1989 to the Assistant Secretary for Environment, Safety, and Health - Part 5: Environment, Safety, Health, and Quality Assurance

    SciTech Connect (OSTI)

    Faust, L.G.; Doctor, P.G.; Selby, J.M.

    1990-04-01T23:59:59.000Z

    Part 5 of the 1989 Annual Report to the US Department of Energy's Assistant Secretary for Environment, Safety, and Health presents Pacific Northwest Laboratory's progress on work performed for the Office of Environmental Guidance and Compliance, the Office of Environmental Audit, the Office of National Environmental Policy Act Project Assistance, the Office of Nuclear Safety, the Office of Safety Compliance, and the Office of Policy and Standards. For each project, as identified by the Field Work Proposal, there is an article describing progress made during fiscal year 1989. Authors of these articles represent a broad spectrum of capabilities derived from five of the seven technical centers of the Laboratory, reflecting the interdisciplinary nature of the work. 35 refs., 1 fig.

  13. Environment

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

    Environment Environment Our good neighbor pledge: to contribute to quality of life in Northern New Mexico through economic development, excellence in education, and active employee...

  14. Understanding the Temperature and Humidity Environment Inside a PV Module (Presentation), NREL (National Renewable Energy Laboratory)

    Broader source: Energy.gov [DOE]

    This PowerPoint presentation was originally given by Michael Kempe of NREL in February 2013 detailing a project funded by the SunShot Initiative. Understanding the Temperature and Humidity Environment Inside a PV Module aims to show that by choosing humidity conditions that more closely match the use environment, one can minimize the uncertainty associated with moisture induced degradation modes.

  15. Chemical analyses of soil samples collected from the Sandia National Laboratories, New Mexico environs, 1993-2005.

    SciTech Connect (OSTI)

    Deola, Regina Anne; Oldewage, Hans D.; Herrera, Heidi; Miller, Mark Laverne

    2006-03-01T23:59:59.000Z

    From 1993 through 2005, the Environmental Management Department of Sandia National Laboratories in Albuquerque, New Mexico (SNL/NM), has collected soil and sediment samples at numerous locations on-site, on the perimeter, and off-site for the purpose of determining potential impacts to the environs from operations at the Laboratories. These samples were submitted to an analytical laboratory for metal-in-soil analyses. Intercomparisons of these results were then made to determine if there was any statistical difference between on-site, perimeter, and off-site samples, or if there were year-to-year increasing or decreasing trends which indicated that further investigation may be warranted. This work provided the SNL Environmental Management Department with a sound baseline data reference against which to assess potential current operational impacts or to compare future operational impacts. In addition, it demonstrates the commitment that the Laboratories have to go beyond mere compliance to achieve excellence in its operations. This data is presented in graphical format with narrative commentaries on particular items of interest.

  16. Model-based benchmarking with application to laboratory buildings

    E-Print Network [OSTI]

    Federspiel, Clifford Ph.D.; Zhang, Qiang; Arens, Edward Ph.D

    2002-01-01T23:59:59.000Z

    hydraulic elevators more than buildings with counterweighted elevators. Efficient air distribution VAV laboratories will use considerably less energy

  17. Independent Oversight Inspection of Environment, Safety, and Health Programs at the Sandia National Laboratories, Technical Appendices, Volume II, May 2005

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Office of Independent Oversight and Performance Assurance (OA) inspected environment, safety, and health (ES&H) programs at DOE Sandia National Laboratories (SNL) during March and April 2005. The inspection was performed by the OA Office of Environment, Safety and Health Evaluations. This volume of the report provides four technical appendices (C through F) containing detailed results of the OA review. Appendix C provides the results of the review of the application of the core functions of ISM for SNL work activities. Appendix D presents the results of the review of NNSA, SSO, and SNL feedback and continuous improvement processes and management systems. Appendix E presents the results of the review of essential safety system functionality, and Appendix F presents the results of the review of safety management of the selected focus areas.

  18. Independent Oversight Inspection of Environment, Safety, and Health Programs at the Argonne National Laboratory, Technical Appendices, Volume II, May 2005

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Office of Independent Oversight and Performance Assurance (OA) inspected environment, safety, and health (ES&H) programs at the DOE Argonne National Laboratory (ANL) during April and May 2005. The inspection was performed by the OA Office of Environment, Safety and Health Evaluations. This volume of the report provides four technical appendices (C through F) containing detailed results of the OA review. Appendix C provides the results of the review of the application of the core functions of ISM for ANL work activities. Appendix D presents the results of the review of SC, ASO, and ANL feedback and continuous improvement processes and management systems. Appendix E presents the results of the review of essential safety system functionality, and Appendix F presents the results of the review of safety management of the selected focus areas.

  19. Summer 2012Protecting MU's Health, Safety, and the Environment Laboratory Safety Incidents

    E-Print Network [OSTI]

    Taylor, Jerry

    causing a flash fire. Ms. Sangji was injured and died as a result of her injuries several days later after a high energy metal compound he was working with detonated. As a result of this explosion to laboratory accidents across the United States which included the June 2009 hydrogen explosion

  20. Energy Conservation and Environmental Sustainability We all know that recycling is extremely important to the environment. At the Laboratory employees are encouraged

    E-Print Network [OSTI]

    Energy Conservation and Environmental Sustainability We all know that recycling is extremely important to the environment. At the Laboratory employees are encouraged to recycle whenever possible. In fact, last year the Laboratory recycled 47% of its solid, non-hazardous waste, which equates to almost

  1. International Journal of Rock Mechanics & Mining Sciences 44 (2007) 739757 Computer simulation of hydraulic fractures

    E-Print Network [OSTI]

    Peirce, Anthony

    2007-01-01T23:59:59.000Z

    of hydraulic fractures J. Adachia , E. Siebritsb , A. Peircec,Ã, J. Desrochesd a Schlumberger Data of hydraulic fracturing models for use in the petroleum and other industries. We discuss scaling laws and the propagation regimes that control the growth of hydraulic fractures from the laboratory to the field scale. We

  2. Delft Hydraulic's Large Wind-Wave Flume Paul van Vliet 1

    E-Print Network [OSTI]

    Jaehne, Bernd

    499 Delft Hydraulic's Large Wind-Wave Flume Paul van Vliet 1 , Frank Hering 2 , and Bernd J¨ahne 2,3 1 Waterloopkundig Laboratorium, Delft Hydraulics Laboratory Rotterdamseweg 185, NL-2692 HD Delft in the seventies, Delft Hydraulics large wind wave flume was totally overhauled to fit the needs of scientists

  3. Hydraulic Conductivity Measurements Barrow 2014

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Katie McKnight; Tim Kneafsey; Craig Ulrich; Jil Geller

    Six individual ice cores were collected from Barrow Environmental Observatory in Barrow, Alaska, in May of 2013 as part of the Next Generation Ecosystem Experiment (NGEE). Each core was drilled from a different location at varying depths. A few days after drilling, the cores were stored in coolers packed with dry ice and flown to Lawrence Berkeley National Laboratory (LBNL) in Berkeley, CA. 3-dimensional images of the cores were constructed using a medical X-ray computed tomography (CT) scanner at 120kV. Hydraulic conductivity samples were extracted from these cores at LBNL Richmond Field Station in Richmond, CA, in February 2014 by cutting 5 to 8 inch segments using a chop saw. Samples were packed individually and stored at freezing temperatures to minimize any changes in structure or loss of ice content prior to analysis. Hydraulic conductivity was determined through falling head tests using a permeameter [ELE International, Model #: K-770B]. After approximately 12 hours of thaw, initial falling head tests were performed. Two to four measurements were collected on each sample and collection stopped when the applied head load exceeded 25% change from the original load. Analyses were performed between 2 to 3 times for each sample. The final hydraulic conductivity calculations were computed using methodology of Das et al., 1985.

  4. Laboratory study and subsequent field results of chemical stimulation for use in open hole environments

    SciTech Connect (OSTI)

    LaFontaine-McLarty, J.; Ali, S.A.; Sanclemente, L.W.; Sketchler, B.C.

    1995-11-01T23:59:59.000Z

    This paper describes the results of a two-year study conducted to optimize cleanup systems in open hole environments. Specifically, the study originated from problems encountered in the design of a series of open hole horizontal completions and the effort to improve well productivity. It was determined that the design of the drilling and completion phases would have to address not only which fluid would provide the necessary requirements for drilling the intervals, but also address the cleanup process during the completion phase. The fluid and cleanup treatment selections would have to be designed to work together to eliminate damage. A combination of a pay zone drilling fluid and an effective cleanup system resulted from the study and productivity numbers have been more than anticipated in all of the completions.

  5. Downhole hydraulic seismic generator

    DOE Patents [OSTI]

    Gregory, Danny L. (Corrales, NM); Hardee, Harry C. (Albuquerque, NM); Smallwood, David O. (Albuquerque, NM)

    1992-01-01T23:59:59.000Z

    A downhole hydraulic seismic generator system for transmitting energy wave vibrations into earth strata surrounding a borehole. The system contains an elongated, unitary housing operably connected to a well head aboveground by support and electrical cabling, and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a hydraulic oscillator containing a double-actuating piston whose movement is controlled by an electro-servovalve regulating a high pressure hydraulic fluid flow into and out of upper and lower chambers surrounding the piston. The spent hydraulic fluid from the hydraulic oscillator is stored and pumped back into the system to provide high pressure fluid for conducting another run at the same, or a different location within the borehole.

  6. Environment, Safety and Health progress assessment of the Idaho National Engineering Laboratory (INEL)

    SciTech Connect (OSTI)

    Not Available

    1993-08-01T23:59:59.000Z

    The ES&H Progress Assessments are part of the Department`s continuous improvement process throughout DOE and its contractor organizations. The purpose of the INEL ES&H Progress Assessment is to provide the Department with concise independent information on the following: (1) change in culture and attitude related to ES&H activities; (2) progress and effectiveness of the ES&H corrective actions resulting from previous Tiger Team Assessments; (3) adequacy and effectiveness of the ES&H self-assessment programs of the DOE line organizations and the site management and operating contractor; and (4) effectiveness of DOE and contractor management structures, resources, and systems to effectively address ES&H problems. It is not intended that this Progress Assessment be a comprehensive compliance assessments of ES&H activities. The points of reference for assessing programs at the INEL were, for the most part, the 1991 INEL Tiger Team Assessment, the INEL Corrective Action Plan, and recent appraisals and self-assessments of INEL. Horizontal and vertical reviews of the following programmatic areas were conducted: Management: Corrective action program; self-assessment; oversight; directives, policies, and procedures; human resources management; and planning, budgeting, and resource allocation. Environment: Air quality management, surface water management, groundwater protection, and environmental radiation. Safety and Health: Construction safety, worker safety and OSHA, maintenance, packaging and transportation, site/facility safety review, and industrial hygiene.

  7. Environment

    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 3,625govInstrumentstdmadapInactiveVisitingContractElectron-StateEnergyHeavyDepartmentebbaEnvironment Environment A

  8. Sandia National Laboratories: Ireland's Hydraulics and Maritime...

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

    Research Centre Joint Sandia-DOE-HMRC Testing of a Floating Oscillating Water Column Wave Energy Converter Device On November 11, 2013, in Energy, News, News & Events,...

  9. Suspensions in hydraulic fracturing

    SciTech Connect (OSTI)

    Shah, S.N. [Univ. of Oklahoma, Norman, OK (United States)

    1996-12-31T23:59:59.000Z

    Suspensions or slurries are widely used in well stimulation and hydraulic fracturing processes to enhance the production of oil and gas from the underground hydrocarbon-bearing formation. The success of these processes depends significantly upon having a thorough understanding of the behavior of suspensions used. Therefore, the characterization of suspensions under realistic conditions, for their rheological and hydraulic properties, is very important. This chapter deals with the state-of-the-art hydraulic fracturing suspension technology. Specifically it deals with various types of suspensions used in well stimulation and fracturing processes, their rheological characterization and hydraulic properties, behavior of suspensions in horizontal wells, review of proppant settling velocity and proppant transport in the fracture, and presently available measurement techniques for suspensions and their merits. Future industry needs for better understanding of the complex behavior of suspensions are also addressed. 74 refs., 21 figs., 1 tab.

  10. Characterization of the seismic environment at the Sanford Underground Laboratory, South This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Christensen, Nelson

    Characterization of the seismic environment at the Sanford Underground Laboratory, South Dakota. Quantum Grav. 27 (2010) 225011 (22pp) doi:10.1088/0264-9381/27/22/225011 Characterization of the seismic, the former Homestake mine, in South Dakota to study the properties of underground seismic fields

  11. Environment

    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 AdministrationField8, 2000ConsumptionInnovation PortalHanford SiteMonitoringEnvironment

  12. Environment

    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 3,625govInstrumentstdmadapInactiveVisitingContractElectron-StateEnergyHeavyDepartmentebba SignEconomicEnvironment

  13. Self-potential observations during hydraulic fracturing

    E-Print Network [OSTI]

    Moore, J R; Glaser, Steven D

    2007-01-01T23:59:59.000Z

    potential measurements during hydraulic fracturing of BunterSP response during hydraulic fracturing. Citation: Moore, J.observations during hydraulic fracturing, J. Geophys. Res. ,

  14. Self-potential observations during hydraulic fracturing

    E-Print Network [OSTI]

    Moore, Jeffrey R.; Glaser, Steven D.

    2008-01-01T23:59:59.000Z

    potential measurements during hydraulic fracturing of BunterMonitoring during hydraulic fracturing using the TG-2 well,fracture processes in hydraulic fracturing, Quarterly Report

  15. Thermal hydraulics development for CASL

    SciTech Connect (OSTI)

    Lowrie, Robert B [Los Alamos National Laboratory

    2010-12-07T23:59:59.000Z

    This talk will describe the technical direction of the Thermal-Hydraulics (T-H) Project within the Consortium for Advanced Simulation of Light Water Reactors (CASL) Department of Energy Innovation Hub. CASL is focused on developing a 'virtual reactor', that will simulate the physical processes that occur within a light-water reactor. These simulations will address several challenge problems, defined by laboratory, university, and industrial partners that make up CASL. CASL's T-H efforts are encompassed in two sub-projects: (1) Computational Fluid Dynamics (CFD), (2) Interface Treatment Methods (ITM). The CFD subproject will develop non-proprietary, scalable, verified and validated macroscale CFD simulation tools. These tools typically require closures for their turbulence and boiling models, which will be provided by the ITM sub-project, via experiments and microscale (such as DNS) simulation results. The near-term milestones and longer term plans of these two sub-projects will be discussed.

  16. Inspection of Environment, Safety, and Health Management at the Argonne National Laboratory- East, Volume I, May 2002

    Broader source: Energy.gov [DOE]

    The Secretary of Energy’s Office of Independent Oversight and Performance Assurance (OA) conducted an inspection of environment, safety, and health (ES&H) programs and emergency management programs at the U. S. Department of Energy (DOE) Argonne National Laboratory (ANL) in April and May 2002. The inspection was performed as a joint effort by the OA Office of Environment, Safety and Health Evaluations and the Office of Emergency Management Oversight. This volume discusses the results of the review of ANL ES&H programs. The results of the review of the ANL emergency management programs are discussed in Volume II of this report and the combined results are discussed in a summary report. As discussed in this report, some aspects of ISM are effectively implemented at ANL, including institutional roles and responsibilities, training and qualification programs, and processes for incorporating ES&H needs into the planning and budgeting processes. In addition, CH/AAO and ANL have been effective in establishing rigorous processes for reviewing experiment safety. However, performance weaknesses are evident in several areas, including work planning and control processes, radiation protection, and some aspects of management of the AGHCF (including nuclear safety requirements). Weaknesses in management systems, such as CH/AAO and ANL feedback and continuous improvement systems and requirements management systems, contribute to the observed performance deficiencies. Section 2 of this volume provides an overall discussion of the results of the review of the ANL ISM program, including positive aspects, findings, and other items requiring management attention. Section 3 provides OA’s conclusions regarding the overall effectiveness of CH and ANL management of the ES&H programs. Section 4 presents the ratings assigned as a result of this review. Appendix A provides supplemental information, including team member composition. Appendix B identifies the specific findings that require corrective actions and follow-up. Appendix C presents the results of the review of the guiding principles of ISM. Appendix D presents the results of the review of the CH and ANL feedback and continuous improvement processes. The results of the review of the application of the core functions of ISM at the selected ANL facilities are discussed in Appendix E.

  17. Modelling, Identification and Experimental Validation of a Hydraulic Manipulator Joint for Control

    E-Print Network [OSTI]

    Papadopoulos, Evangelos

    Modelling, Identification and Experimental Validation of a Hydraulic Manipulator Joint for Control increase efficiency. However, the control of manipulators interacting with an environment is very complex complicate the control of manipulators in contact with their environment. Unlike electrical actuators

  18. Geostatistical inference of hydraulic conductivity and dispersivities from hydraulic heads and tracer data

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    Geostatistical inference of hydraulic conductivity and dispersivities from hydraulic heads; accepted 25 April 2006; published 10 August 2006. [1] In groundwater, hydraulic heads and solute arrival times depend primarily on the hydraulic conductivity field and hydraulic boundary conditions. The spread

  19. Pacific Northwest Laboratory: Annual report for 1986 to the Assistant Secretary for Environment, Safety and Health: Part 5, Nuclear and operational safety

    SciTech Connect (OSTI)

    Faust, L.G.; Kennedy, W.E.; Steelman, B.L.; Selby, J.M.

    1987-02-01T23:59:59.000Z

    Part 5 of the 1986 Annual Report to the Department of Energy's Assistant Secretary for Environment, Safety and Health presents Pacific Northwest Laboratory's progress on work performed for the Office of Nuclear Safety, the Office of Operational Safety, and for the Office of Environmental Analysis. For each project, as identified by the Field Task Proposal/Agreement, articles describe progress made during fiscal year 1986. Authors of these articles represent a broad spectrum of capabilities derived from three of the seven research departments of the Laboratory, reflecting the interdisciplinary nature of the work.

  20. Water Resources: Hydraulics and Hydrology

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Water Resources: Hydraulics and Hydrology Interview with Margaret S. Petersen #12;This manuscript RESOURCES: HYDRAULICS AND HYDROLOGY #12;Approved for public release distribution IS unlimited. #12;Preface The United States Army Corps of Engineers significantly contributed to hydraulic and hydrologic engineering

  1. Viscous Hydraulic Jumps Submitted by

    E-Print Network [OSTI]

    Bush, John W.M.

    Viscous Hydraulic Jumps Submitted by Jeffrey M. Aristoff, Jeffrey D. Leblanc, Annette E. Hosoi, and John W. M. Bush, Massachusetts Institute of Technology We examine the form of the viscous hydraulic of height 2­10 mm. Elegaard et al.1 first demonstrated that the axial symme- try of the viscous hydraulic

  2. Global Climate Change: Environment, Technology and Society

    E-Print Network [OSTI]

    Mumby, Peter J.

    . Appreciate the main aspects of hydropower resource estimation, turbine design, deployment and environmental AND ASSESSMENTS Global Climate Change: Environment, Technology and Society I am a Civil Hydraulic

  3. Hydraulic waste energy recovery

    SciTech Connect (OSTI)

    Lederer, C.C.; Thomas, A.H.; McGuire, J.L. (Detroit Buildings and Safety Engineering Dept., MI (USA))

    1990-12-01T23:59:59.000Z

    Water distribution systems are typically a municipality's largest consumer of energy and greatest expense. The water distribution network has varying pressure requirements due to the age of the pipeline and topographical differences. Certain circumstances require installation of pressure reducing devices in the pipeline to lower the water pressure in the system. The consequence of this action is that the hydraulic energy supplied by the high lift or booster pumps is wasted in the process of reducing the pressure. A possible solution to capture the waste hydraulic energy is to install an in-line electricity generating turbine. Energy recovery using in-line turbine systems is an emerging technology. Due to the lack of technical and other relevant information on in-line turbine system installations, questions of constructability and legal issues over the power service contract have yet to be answered. This study seeks to resolve these questions and document the findings so that other communities may utilize this information. 10 figs.

  4. A Tour of the Aerodynamic and Hydraulic Research Infrastructure, Department of Engineering, University of Leicester

    E-Print Network [OSTI]

    Gorban, Alexander N.

    A Tour of the Aerodynamic and Hydraulic Research Infrastructure, Department of Engineering of the experimental facilities that are more relevant to fundamental and applied flow turbine research. The tour-section wind tunnel. This will be followed by a visit to the Hydraulics laboratory, Engineering Tower (13

  5. Energy Management and Control Systems and their Use for Performance Monitoring in the LoanSTAR Program, Technical Report prepared for the Lawrence Berkeley Laboratory, University of California, Energy and Environment Division

    E-Print Network [OSTI]

    Heinemeier, K. E.; Akbari, H.

    1993-01-01T23:59:59.000Z

    ESL-TR-93/06-02 LBL-33114 UC-350 LAWRENCE BERKELEY LABORATORY UNIVERSITY OF CALIFORNIA ENERGY AND ENVIRONMENT DIVISION ENERGY MANAGEMENT AND CONTROL SYSTEMS AND THEIR USE FOR PERFORMANCE MONITORING IN THE LOANSTAR PROGRAM Final Report Prepared...

  6. The role of the DOE weapons laboratories in a changing national security environment: CNSS papers No. 8, April 1988

    SciTech Connect (OSTI)

    Hecker, S.S.

    1988-01-01T23:59:59.000Z

    The contributions of the Department of Energy (DOE) nuclear weapons laboratories to the nation's security are reviewed in testimony before the Subcommittee on Procurement and Military Nuclear Systems of the House Armed Services Committee. Also presented are contributions that technology will make in maintaining the strategic balance through deterrence, treaty verification, and a sound nuclear weapons complex as the nation prepares for significant arms control initiatives. The DOE nuclear weapons laboratories can contribute to the broader context of national security, one that recognizes that military strength can be maintained over the long term only if it is built upon the foundations of economic strength and energy security. 9 refs.

  7. Reprinted from the Journal of Scientific Instruments, VOL. 41, pp. 321323, MAY 1964 ` A water wave recording instrument for use in hydraulic models

    E-Print Network [OSTI]

    Moore, John Barratt

    recording instrument for use in hydraulic models J. B. MOORET Department of Electrical Engineering for recording water waves in hydraulic models. 1. Introduction The measurement of water-wave magnitudes and the record. ing of waveforms is often carried out in hydraulic laboratories. If, for example, the most

  8. Pacific Northwest Laboratory annual report for 1980 to the DOE Assistant Secretary for Environment. Part 5. Environmental assessment, control, health and safety

    SciTech Connect (OSTI)

    Baalman, R.W.; Hays, I.D. (eds.)

    1981-02-01T23:59:59.000Z

    Pacific Northwest Laboratory's (PNL) 1980 annual report to the DOE Assistant Secretary for Environment describes research in environment, health, and safety conducted during fiscal year 1980. Part 5 includes technology assessments for natural gas, enhanced oil recovery, oil shale, uranium mining, magnetic fusion energy, solar energy, uranium enrichment and industrial energy utilization; regional analysis studies of environmental transport and community impacts; environmental and safety engineering for LNG, oil spills, LPG, shale oil waste waters, geothermal liquid waste disposal, compressed air energy storage, and nuclear/fusion fuel cycles; operational and environmental safety studies of decommissioning, environmental monitoring, personnel dosimetry, and analysis of criticality safety; health physics studies; and epidemiological studies. Also included are an author index, organization of PNL charts and distribution lists of the annual report, along with lists of presentations and publications. (DLS)

  9. Independent Oversight Inspection of Environment, Safety, and Health Management at the Lawrence Livermore National Laboratory, Technical Appendices, Volume II, December 2004

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Office of Independent Oversight and Performance Assurance (OA), within the Office of Security and Safety Performance Assurance (SSA), conducted an inspection of environment, safety, and health (ES&H) at the DOE Lawrence Livermore National Laboratory (LLNL) during October and November 2004. The inspection was performed by the OA Office of Environment, Safety and Health Evaluations. Volume II of this report provides four technical appendices (C through F) containing detailed results of the OA review. Appendix C provides the results of the review of the application of the core functions of ISM for LLNL work activities. Appendix D presents the results of the review of NNSA, LSO, and contractor feedback and continuous improvement processes. Appendix E presents the results of the review of Plutonium Building essential safety system functionality, and Appendix F presents the results of the review of management of the selected focus areas.

  10. Sequential Thermo-Hydraulic Modeling of Variably Saturated Flow in High-Level Radioactive Waste Repository

    E-Print Network [OSTI]

    Boyer, Edmond

    Sequential Thermo-Hydraulic Modeling of Variably Saturated Flow in High-Level Radioactive Waste-Malabry, France Key words: waste repository, geological disposal, thermo- hydraulic modeling Introduction The most long-lived radioactive wastes must be managed in a safe way for human health and for the environment

  11. Hydraulic mining method

    DOE Patents [OSTI]

    Huffman, Lester H. (Kent, WA); Knoke, Gerald S. (Kent, WA)

    1985-08-20T23:59:59.000Z

    A method of hydraulically mining an underground pitched mineral vein comprising drilling a vertical borehole through the earth's lithosphere into the vein and drilling a slant borehole along the footwall of the vein to intersect the vertical borehole. Material is removed from the mineral vein by directing a high pressure water jet thereagainst. The resulting slurry of mineral fragments and water flows along the slant borehole into the lower end of the vertical borehole from where it is pumped upwardly through the vertical borehole to the surface.

  12. Hydraulic and Habitat Suitability Analyses Technical Memorandum

    E-Print Network [OSTI]

    Appendix D Hydraulic and Habitat Suitability Analyses Technical Memorandum #12;COPYRIGHT DECEMBER Series 2 and Pond Series 3 Hydraulic and Habitat Suitability Analyses Prepared for Bureau of Reclamation HILL, INC. III Hydraulic and Habitat Suitability Analyses

  13. Steady state method to determine unsaturated hydraulic conductivity at the ambient water potential

    DOE Patents [OSTI]

    HUbbell, Joel M.

    2014-08-19T23:59:59.000Z

    The present invention relates to a new laboratory apparatus for measuring the unsaturated hydraulic conductivity at a single water potential. One or more embodiments of the invented apparatus can be used over a wide range of water potential values within the tensiometric range, requires minimal laboratory preparation, and operates unattended for extended periods with minimal supervision. The present invention relates to a new laboratory apparatus for measuring the unsaturated hydraulic conductivity at a single water potential. One or more embodiments of the invented apparatus can be used over a wide range of water potential values within the tensiometric range, requires minimal laboratory preparation, and operates unattended for extended periods with minimal supervision.

  14. Laboratory investigations of effective flow behavior in unsaturated heterogeneous sands

    E-Print Network [OSTI]

    Wildenschild, Dorthe

    Laboratory investigations of effective flow behavior in unsaturated heterogeneous sands D, Lyngby Abstract. Two-dimensional unsaturated flow and transport through heterogeneous sand was investigated under controlled laboratory conditions. The unsaturated hydraulic conductivity of five homogeneous

  15. Geosynthetic clay liners in alkaline environments

    SciTech Connect (OSTI)

    McKelvey, J.A. III [Roy F. Weston, Inc., West Chester, PA (United States)

    1997-11-01T23:59:59.000Z

    The use of geosynthetic clay liners (GCLs) as secondary barrier layers in environmental applications such as landfills and other impoundment facilities is becoming increasingly more popular among the engineering community, particularly at project sites where earthen materials suitable for barrier layers may not be locally available. Design engineers for these environmental applications are becoming well versed at performing equivalency calculations comparing the performance of geosynthetic materials to their earthen counterparts. For barrier layers, these equivalency calculations would normally compare the mechanical and hydraulic properties of the GCL to a compacted clay liner. Of these properties, the ability of the hydraulic properties to withstand degradation due to permeation of contained leachates is of prominent concern. Such is the case in alkaline environments. The leachate may adversely affect the GCL by minimizing swelling, decreasing adsorption capacity and increasing the permeability of the material. If the effect on the material is significant, the usefulness of this product is diminished, possibly voiding any equivalency comparison to compacted clay liner performance. The design engineer must fully understand what effect, if any, specific leachates will have on the GCL being considered. Accordingly, appropriate performance testing with the leachate in question must be performed during the design phase and confirmed during construction through quality assurance testing. This paper will present the design considerations, required laboratory testing and conformance tests for a recent project that contained an alkaline leachate. Through appropriate testing, a contaminant resistant GCL was shown to possess desired hydraulic properties in the presence of the alkaline leachate.

  16. Science Laboratory Infrastructure (SLI) Presentation to SLAC

    E-Print Network [OSTI]

    Wechsler, Risa H.

    compliant access, restrooms, and 2- stop hydraulic elevator » New interior office layout with 40% open with Department of Energy Order 430.2B ­ Renewable Energy and Transportation Management » Promote "One Laboratory

  17. Pacific Northwest Laboratory annual report for 1979 to the DOE Assistant Secretary for Environment. Part 2. Ecological sciences

    SciTech Connect (OSTI)

    Vaughan, B.E.

    1980-02-01T23:59:59.000Z

    Research in Environment, Health, and Safety conducted during fiscal year 1979 is reported. This volume consists of project reports from the Ecological Sciences research department. The reports are grouped under the following subject areas: National Environmental Research Park and land use; Alaskan resource research; shale oil; synfuels; nuclear waste; fission; marine research programs; statistical development of field research; nuclear fusion; pumped storage and hydroelectric development; pathways modelling, assessment and Hanford project support; electric field and microwave research; and energy research for other agencies. (ACR)

  18. Electrokinetic high pressure hydraulic system

    DOE Patents [OSTI]

    Paul, Phillip H. (Livermore, CA); Rakestraw, David J. (Fremont, CA)

    2000-01-01T23:59:59.000Z

    A compact high pressure hydraulic pump having no moving mechanical parts for converting electric potential to hydraulic force. The electrokinetic pump, which can generate hydraulic pressures greater than 2500 psi, can be employed to compress a fluid, either liquid or gas, and manipulate fluid flow. The pump is particularly useful for capillary-base systems. By combining the electrokinetic pump with a housing having chambers separated by a flexible member, fluid flow, including high pressure fluids, is controlled by the application of an electric potential, that can vary with time.

  19. Los Alamos National Laboratory

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

    23, 2013-Nearly 400 Los Alamos National Laboratory employees on 47 teams received Pollution Prevention awards for protecting the environment and saving taxpayers more than 8...

  20. Insights From Laboratory Experiments On Simulated Faults With Application To Fracture Evolution In Geothermal Systems

    SciTech Connect (OSTI)

    Stephen L. Karner, Ph.D

    2006-06-01T23:59:59.000Z

    Laboratory experiments provide a wealth of information related to mechanics of fracture initiation, fracture propagation processes, factors influencing fault strength, and spatio-temporal evolution of fracture properties. Much of the existing literature reports on laboratory studies involving a coupling of thermal, hydraulic, mechanical, and/or chemical processes. As these processes operate within subsurface environments exploited for their energy resource, laboratory results provide insights into factors influencing the mechanical and hydraulic properties of geothermal systems. I report on laboratory observations of strength and fluid transport properties during deformation of simulated faults. The results show systematic trends that vary with stress state, deformation rate, thermal conditions, fluid content, and rock composition. When related to geophysical and geologic measurements obtained from engineered geothermal systems (e.g. microseismicity, wellbore studies, tracer analysis), laboratory results provide a means by which the evolving thermal reservoir can be interpreted in terms of physico-chemical processes. For example, estimates of energy release and microearthquake locations from seismic moment tensor analysis can be related to strength variations observed from friction experiments. Such correlations between laboratory and field data allow for better interpretations about the evolving mechanical and fluid transport properties in the geothermal reservoir – ultimately leading to improvements in managing the resource.

  1. Indirect Adaptive Robust Control of Electro-Hydraulic Systems Driven by Single-Rod Hydraulic Actuator

    E-Print Network [OSTI]

    Yao, Bin

    Indirect Adaptive Robust Control of Electro-Hydraulic Systems Driven by Single-Rod Hydraulic) of electro-hydraulic systems driven by single- rod hydraulic actuators. Unlike the tracking that the proposed IARC achieves good tracking performance and accurate parameter estimation. INTRODUCTION Electro-hydraulic

  2. Recover Power with Hydraulic Motors

    E-Print Network [OSTI]

    Brennan, J. R.

    1982-01-01T23:59:59.000Z

    displacement device, the HPRM torque and speed are almost completely independent - unlike hydraulic power recovery turbines (centrifugal motors). Three screw HPRM's have low moments of inertia, operate at low vibration and noise levels and extract power...

  3. Calibration of floodplain roughness and estimation of flood discharge based on tree-ring evidence and hydraulic modelling

    E-Print Network [OSTI]

    Stoffel, Markus

    and Environmental Engineering, Universidad de Los Andes, Bogotá, Colombia d Laboratory of Dendrogeomorphology the Navaluenga flow gauge (Avila Province) as well as a 1D/2D coupled numerical hydraulic model. A total of 49 hydraulic modelling, we cannot find a statistically sig- nificant difference between water depths registered

  4. Production Hydraulic Packer Field Test

    SciTech Connect (OSTI)

    Schneller, Tricia; Salas, Jose

    2000-06-30T23:59:59.000Z

    In October 1999, the Rocky Mountain Oilfield Testing Center and Halliburton Energy Services cooperated on a field test of Halliburton's new Production Hydraulic Packer technology on Well 46-TPX-10 at Naval Petroleum Reserve No. 3 near Casper, WY. Performance of the packer was evaluated in set and unset operations. The packer's ability to seal the annulus between the casing and tubing was hydraulically tested and the results were recorded.

  5. Numerical simulation of hydraulic fracturing

    E-Print Network [OSTI]

    Warner, Joseph Barnes

    1987-01-01T23:59:59.000Z

    ~ared that the results of such treatments were not always adequately described by the two-dimensional models. With recent advances in hydraulic fracturing and computing technology, attempts have been made to formulate more realistic fracture models. These three...NUMERICAL SIMULATION OF HYDRAULIC FRACTURING A Thesis by JOSEPH BARNES WARNER Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1987 Maj or Subj ect...

  6. HYDRAULIC AND PHYSICAL PROPERTIES OF MCU SALTSTONE

    SciTech Connect (OSTI)

    Dixon, K; Mark Phifer, M

    2008-03-19T23:59:59.000Z

    The Saltstone Disposal Facility (SDF), located in the Z-Area of the Savannah River Site (SRS), is used for the disposal of low-level radioactive salt solution. The SDF currently contains two vaults: Vault 1 (6 cells) and Vault 4 (12 cells). Additional disposal cells are currently in the design phase. The individual cells of the saltstone facility are filled with saltstone., Saltstone is produced by mixing the low-level radioactive salt solution, with blast furnace slag, fly ash, and cement or lime to form a dense, micro-porous, monolithic, low-level radioactive waste form. The saltstone is pumped into the disposal cells where it subsequently solidifies. Significant effort has been undertaken to accurately model the movement of water and contaminants through the facility. Key to this effort is an accurate understanding of the hydraulic and physical properties of the solidified saltstone. To date, limited testing has been conducted to characterize the saltstone. The primary focus of this task was to estimate the hydraulic and physical properties of MCU (Modular Caustic Side Solvent Extraction Unit) saltstone relative to two permeating fluids. These fluids included simulated groundwater equilibrated with vault concrete and simulated saltstone pore fluid. Samples of the MCU saltstone were prepared by the Savannah River National Laboratory (SRNL) and allowed to cure for twenty eight days prior to testing. These samples included two three-inch diameter by six inch long mold samples and three one-inch diameter by twelve inch long mold samples.

  7. Simulation of condensation in the presence of noncondensible gases using the French Thermal Hydraulic computer code CATHARE

    E-Print Network [OSTI]

    Reyes, Joseph Patrick

    1996-01-01T23:59:59.000Z

    the CATHARE thermal hydraulic code. The experiments were conducted at the University of California, Berkeley, and at the Energy Research Laboratory in Japan; supervised by Hitachi, Ltd.. The experiments involved the condensation of a steam/air mixture...

  8. INTERPRETATION OF A HYDRAULIC FRACTURING EXPERIMENT, MONTICELLO, SOUTH CAROLINA

    E-Print Network [OSTI]

    Narasimhan, T.N.

    2014-01-01T23:59:59.000Z

    Letters INTERPRETATION OF A HYDRAULIC FRACTURING EXPERIMENT,12091 INTERPRETATION OF A HYDRAULIC FRACTURING EXPERIMENT,transient data from a hydraulic fracturing experiment have

  9. Mercury-Contaminated Hydraulic Mining Debris in San Francisco Bay

    E-Print Network [OSTI]

    Bouse, Robin M; Fuller, Christopher C; Luoma, Sam; Hornberger, Michelle I; Jaffe, Bruce E; Smith, Richard E

    2010-01-01T23:59:59.000Z

    Contaminated Hydraulic Mining Debris in San Francisco BayAbstract The hydraulic gold-mining process used during thecreated by hydraulic gold mining in the Sierra Nevada,

  10. Laboratories for the 21st Century Best Practices: Onsite Distributed Generation Systems For Laboratories

    Broader source: Energy.gov [DOE]

    Guide describes general information on implementing onsite distributed generation systems in laboratory environments.

  11. Crack growth rates and metallographic examinations of Alloy 600 and Alloy 82/182 from field components and laboratory materials tested in PWR environments.

    SciTech Connect (OSTI)

    Alexandreanu, B.; Chopra, O. K.; Shack, W. J.

    2008-05-05T23:59:59.000Z

    In light water reactors, components made of nickel-base alloys are susceptible to environmentally assisted cracking. This report summarizes the crack growth rate results and related metallography for field and laboratory-procured Alloy 600 and its weld alloys tested in pressurized water reactor (PWR) environments. The report also presents crack growth rate (CGR) results for a shielded-metal-arc weld of Alloy 182 in a simulated PWR environment as a function of temperature between 290 C and 350 C. These data were used to determine the activation energy for crack growth in Alloy 182 welds. The tests were performed by measuring the changes in the stress corrosion CGR as the temperatures were varied during the test. The difference in electrochemical potential between the specimen and the Ni/NiO line was maintained constant at each temperature by adjusting the hydrogen overpressure on the water supply tank. The CGR data as a function of temperature yielded activation energies of 252 kJ/mol for a double-J weld and 189 kJ/mol for a deep-groove weld. These values are in good agreement with the data reported in the literature. The data reported here and those in the literature suggest that the average activation energy for Alloy 182 welds is on the order of 220-230 kJ/mol, higher than the 130 kJ/mol commonly used for Alloy 600. The consequences of using a larger value of activation energy for SCC CGR data analysis are discussed.

  12. Electrokinetic high pressure hydraulic system

    DOE Patents [OSTI]

    Paul, Phillip H.; Rakestraw, David J.; Arnold, Don W.; Hencken, Kenneth R.; Schoeniger, Joseph S.; Neyer, David W.

    2003-06-03T23:59:59.000Z

    An electrokinetic high pressure hydraulic pump for manipulating fluids in capillary-based system. The pump uses electro-osmotic flow to provide a high pressure hydraulic system, having no moving mechanical parts, for pumping and/or compressing fluids, for providing valve means and means for opening and closing valves, for controlling fluid flow rate, and manipulating fluid flow generally and in capillary-based systems (microsystems), in particular. The compact nature of the inventive high pressure hydraulic pump provides the ability to construct a micro-scale or capillary-based HPLC system that fulfills the desire for small sample quantity, low solvent consumption, improved efficiency, the ability to run samples in parallel, and field portability. Control of pressure and solvent flow rate is achieved by controlling the voltage applied to an electrokinetic pump.

  13. Method for directional hydraulic fracturing

    DOE Patents [OSTI]

    Swanson, David E. (West St. Paul, MN); Daly, Daniel W. (Crystal, MN)

    1994-01-01T23:59:59.000Z

    A method for directional hydraulic fracturing using borehole seals to confine pressurized fluid in planar permeable regions, comprising: placing a sealant in the hole of a structure selected from geologic or cemented formations to fill the space between a permeable planar component and the geologic or cemented formation in the vicinity of the permeable planar component; making a hydraulic connection between the permeable planar component and a pump; permitting the sealant to cure and thereby provide both mechanical and hydraulic confinement to the permeable planar component; and pumping a fluid from the pump into the permeable planar component to internally pressurize the permeable planar component to initiate a fracture in the formation, the fracture being disposed in the same orientation as the permeable planar component.

  14. Electrokinetic high pressure hydraulic system

    DOE Patents [OSTI]

    Paul, Phillip H. (Livermore, CA); Rakestraw, David J. (Fremont, CA); Arnold, Don W. (Livermore, CA); Hencken, Kenneth R. (Pleasanton, CA); Schoeniger, Joseph S. (Oakland, CA); Neyer, David W. (Castro Valley, CA)

    2001-01-01T23:59:59.000Z

    An electrokinetic high pressure hydraulic pump for manipulating fluids in capillary-based systems. The pump uses electro-osmotic flow to provide a high pressure hydraulic system, having no moving mechanical parts, for pumping and/or compressing fluids, for providing valve means and means for opening and closing valves, for controlling fluid flow rate, and manipulating fluid flow generally and in capillary-based systems (Microsystems), in particular. The compact nature of the inventive high pressure hydraulic pump provides the ability to construct a micro-scale or capillary-based HPLC system that fulfills the desire for small sample quantity, low solvent consumption, improved efficiency, the ability to run samples in parallel, and field portability. Control of pressure and solvent flow rate is achieved by controlling the voltage applied to an electrokinetic pump.

  15. Hydraulic jumps on an incline

    E-Print Network [OSTI]

    Jean-Luc Thiffeault; Andrew Belmonte

    2010-09-01T23:59:59.000Z

    When a fluid jet strikes an inclined solid surface at normal incidence, gravity creates a flow pattern with a thick outer rim resembling a parabola and reminiscent of a hydraulic jump. There appears to be little theory or experiments describing simple aspects of this phenomenon, such as the maximum rise height of the fluid above the impact point, and its dependence on jet velocity and inclination angle. We address this with experiments, and present a simple theory based on horizontal hydraulic jumps which accounts for the rise height and its scaling, though without describing the shape of the parabolic envelope.

  16. Electokinetic high pressure hydraulic system

    DOE Patents [OSTI]

    Paul, Phillip H. (Livermore, CA); Rakestraw, David J. (Fremont, CA)

    2000-01-01T23:59:59.000Z

    A compact high pressure hydraulic system having no moving parts for converting electric potential to hydraulic force and for manipulating fluids. Electro-osmotic flow is used to provide a valve and means to compress a fluid or gas in a capillary-based system. By electro-osmotically moving an electrolyte between a first position opening communication between a fluid inlet and outlet and a second position closing communication between the fluid inlet and outlet the system can be configured as a valve. The system can also be used to generate forces as large as 2500 psi that can be used to compress a fluid, either a liquid or a gas.

  17. MOOSE: Multiphysics Object-Oriented Simulation Environment

    ScienceCinema (OSTI)

    Gaston, Derek

    2014-05-30T23:59:59.000Z

    An overview of Idaho National Laboratory's MOOSE: Multiphysics Object-Oriented Simulation Environment

  18. Hydraulic conductivity imaging from 3-D transient hydraulic tomography at several pumping/observation densities

    E-Print Network [OSTI]

    Barrash, Warren

    Hydraulic conductivity imaging from 3-D transient hydraulic tomography at several pumping August 2013; accepted 7 September 2013; published 13 November 2013. [1] 3-D Hydraulic tomography (3-D HT (primarily hydraulic conductivity, K) is estimated by joint inversion of head change data from multiple

  19. Ensemble smoother assimilation of hydraulic head and return flow data to estimate hydraulic conductivity distribution

    E-Print Network [OSTI]

    Bau, Domenico A.

    Ensemble smoother assimilation of hydraulic head and return flow data to estimate hydraulic and data measurements, an ensemble smoother (ES) to provide enhanced estimates of aquifer hydraulic conductivity (K) through assimilation of hydraulic head (H) and groundwater return flow volume (RFV

  20. The Environmental Injector: Beyond Common Rail and Hydraulic...

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

    The Environmental Injector: Beyond Common Rail and Hydraulic Intensificatiion The Environmental Injector: Beyond Common Rail and Hydraulic Intensificatiion The Environmental...

  1. Sandia National Laboratories: Water & Environment

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

    States and multiple regions of the world, competing demands for fresh water outweigh sustainable supply. Water issues increasingly limit economic development, impact...

  2. Hydraulic Fracture: multiscale processes and moving

    E-Print Network [OSTI]

    Peirce, Anthony

    Hydraulic Fracture: multiscale processes and moving interfaces Anthony Peirce Department Mitchell (UBC) · Ed Siebrits (SLB, Houston) #12;2 Outline · What is a hydraulic fracture? · Scaling Fluid Proppant #12;6 An actual hydraulic fracture #12;7 HF experiment (Jeffrey et al CSIRO) #12;8 1D

  3. Hydraulic Fracture: multiscale processes and moving

    E-Print Network [OSTI]

    Peirce, Anthony

    Hydraulic Fracture: multiscale processes and moving interfaces Anthony Peirce Department Siebrits (SLB, Houston) #12;2 Outline · What is a hydraulic fracture? · Mathematical models of hydraulic fracture · Scaling and special solutions for 1-2D models · Numerical modeling for 2-3D problems

  4. Hydraulic Geometry: Empirical Investigations and Theoretical Approaches

    E-Print Network [OSTI]

    Eaton, Brett

    Hydraulic Geometry: Empirical Investigations and Theoretical Approaches B.C. Eatona, a Department of Geography, The University of British Columbia 1984 West Mall, Vancouver, BC, V6T 1Z2 Abstract Hydraulic. One approach to hydraulic geometry considers temporal changes at a single location due to variations

  5. Numerical Study of a Turbulent Hydraulic Jump

    E-Print Network [OSTI]

    Zhao, Qun

    Numerical Study of a Turbulent Hydraulic Jump Qun Zhao, Shubhra Misra, Ib. A. Svendsen and James T of a Turbulent Hydraulic Jump ­ p.1/14 #12;Objective Our ultimate goal is to study the breaking waves. Numerical Study of a Turbulent Hydraulic Jump ­ p.2/14 #12;A moving bore Qiantang Bore China (Courtesy of Dr J

  6. LA-12968-MS The Unsaturated Hydraulic

    E-Print Network [OSTI]

    LA-12968-MS The Unsaturated Hydraulic Characteristics of the BandelierTuff LosN A T I O N A L L A B technical correctness. #12;The Unsaturated Hydraulic Characteristics of the Bandelier Tuff David B. Rogers........................................................................................................4 Hydraulic Data Presentation

  7. 4, 37193769, 2007 A model for hydraulic

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    HESSD 4, 3719­3769, 2007 A model for hydraulic redistribution G. G. Amenu and P. Kumar Title Page are under open-access review for the journal Hydrology and Earth System Sciences A model for hydraulic;HESSD 4, 3719­3769, 2007 A model for hydraulic redistribution G. G. Amenu and P. Kumar Title Page

  8. Regulation of Hydraulic Fracturing in California

    E-Print Network [OSTI]

    Kammen, Daniel M.

    APRIL 2013 Regulation of Hydraulic Fracturing in California: A WAsteWAteR And WAteR QuAlity Pe | Regulation of Hydraulic Fracturing in California Wheeler Institute for Water Law & Policy Center for Law #12;Regulation of Hydraulic Fracturing in California | 3Berkeley law | wheeler InstItute for water law

  9. ENVE 417 HYDRAULIC DESIGN TOPIC SYLLABUS

    E-Print Network [OSTI]

    Clark, Shirley E.

    Applications in Hydraulic Engineering, 5th Edition, Haestad Press. 2002 Shun Dar Lin. Water and WastewaterENVE 417 HYDRAULIC DESIGN TOPIC SYLLABUS Current Catalog Data: Design of water and waste water. John Wiley & Sons, Inc. New York, NY. 2001. Hydraulic Design Handbook, Larry W. Mays, McGraw-Hill, New

  10. Hydraulic Cooling Tower Driver- The Innovation

    E-Print Network [OSTI]

    Dickerson, J. A.

    -drive eliminates these items from the drive train and puts the same electric motor HP at ground level close coupled to a hydraulic pump, filters, and oil reservoir. Hydraulic lines bring oil pressure to the hydraulic motor, which is more than 75% less weight than...

  11. Independent Oversight Inspection, Sandia National Laboratories...

    Office of Environmental Management (EM)

    National Laboratories, Summary Report - February 2003 February 2003 Inspection of Environment, Safety, and Health and Emergency Management at the Sandia National Laboratories...

  12. Sandia National Laboratories: Combustion Research Facility

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

    Hydrogen Behavior On June 13, 2014, in Turbulent Combustion Laboratory The Turbulent Combustion Laboratory (TCL) provides a well-controlled, lab-scale environment for testing...

  13. Gas Test Loop Booster Fuel Hydraulic Testing

    SciTech Connect (OSTI)

    Gas Test Loop Hydraulic Testing Staff

    2006-09-01T23:59:59.000Z

    The Gas Test Loop (GTL) project is for the design of an adaptation to the Advanced Test Reactor (ATR) to create a fast-flux test space where fuels and materials for advanced reactor concepts can undergo irradiation testing. Incident to that design, it was found necessary to make use of special booster fuel to enhance the neutron flux in the reactor lobe in which the Gas Test Loop will be installed. Because the booster fuel is of a different composition and configuration from standard ATR fuel, it is necessary to qualify the booster fuel for use in the ATR. Part of that qualification is the determination that required thermal hydraulic criteria will be met under routine operation and under selected accident scenarios. The Hydraulic Testing task in the GTL project facilitates that determination by measuring flow coefficients (pressure drops) over various regions of the booster fuel over a range of primary coolant flow rates. A high-fidelity model of the NW lobe of the ATR with associated flow baffle, in-pile-tube, and below-core flow channels was designed, constructed and located in the Idaho State University Thermal Fluids Laboratory. A circulation loop was designed and constructed by the university to provide reactor-relevant water flow rates to the test system. Models of the four booster fuel elements required for GTL operation were fabricated from aluminum (no uranium or means of heating) and placed in the flow channel. One of these was instrumented with Pitot tubes to measure flow velocities in the channels between the three booster fuel plates and between the innermost and outermost plates and the side walls of the flow annulus. Flow coefficients in the range of 4 to 6.5 were determined from the measurements made for the upper and middle parts of the booster fuel elements. The flow coefficient for the lower end of the booster fuel and the sub-core flow channel was lower at 2.3.

  14. Recent advances in hydraulic fracturing

    SciTech Connect (OSTI)

    Gidley, J.L.

    1989-01-01T23:59:59.000Z

    This book is a reference to the application of significant technological advances in hydraulic fracturing. It features illustrative problems to demonstrate specific applications of advanced technologies. Chapters examine pretreatment formation evaluation, rock mechanics and fracture geometry, 2D and 3D fracture-propagation models, propping agents and fracture conductivity, fracturing fluids and additives, fluid leakoff, flow behavior, proppant transport, treatment design, well completions, field implementation, fracturing-pressure analysis, postfracture formation evaluation, fracture azimuth and geometry determination, and economics of fracturing.

  15. Coordinated studies in support of hydraulic fracturing of coalbed methane. Annual report, November 1991-December 1992

    SciTech Connect (OSTI)

    Not Available

    1993-04-01T23:59:59.000Z

    The purpose of the work is to characterize common and potential fracturing fluids in terms of coal-fluid interactions to identify reasons for less than satisfactory performance and to ultimately devise alternative fluids and treatment procedures to optimize production following hydraulic fracturing. The laboratory data reported herein has proven helpful in designing improved hydraulic fracturing treatments and remedial treatments in the Black Warrior Basin. Acid inhibitors, scale inhibitors, additives to improve coal relative permeability to gas, and non-damaging polymer systems for hydraulic fracturing have been screened in coal damage tests. The optimum conditions for creating field-like foams in the laboratory have been explored. Tests have been run to identify minimum polymer and surfactant concentrations for applications of foam in coal. The roll of 100 mesh sand in controlling leakoff and impairing conductivity in coal has been investigated.

  16. Independent Oversight Inspection, Lawrence Livermore National Laboratory- May 2007

    Broader source: Energy.gov [DOE]

    Inspection of Environment, Safety, and Health Programs at the Lawrence Livermore National Laboratory

  17. Independent Oversight Inspection, Idaho National Laboratory- August 2007

    Broader source: Energy.gov [DOE]

    Inspection of Environment, Safety, and Health Programs at the Idaho National Laboratory's Materials and Fuels Complex

  18. Combined hydraulic and regenerative braking system

    DOE Patents [OSTI]

    Venkataperumal, Rama R. (Troy, MI); Mericle, Gerald E. (Mount Clemens, MI)

    1981-06-02T23:59:59.000Z

    A combined hydraulic and regenerative braking system and method for an electric vehicle, with the braking system being responsive to the applied hydraulic pressure in a brake line to control the braking of the vehicle to be completely hydraulic up to a first level of brake line pressure, to be partially hydraulic at a constant braking force and partially regenerative at a linearly increasing braking force from the first level of applied brake line pressure to a higher second level of brake line pressure, to be partially hydraulic at a linearly increasing braking force and partially regenerative at a linearly decreasing braking force from the second level of applied line pressure to a third and higher level of applied line pressure, and to be completely hydraulic at a linearly increasing braking force from the third level to all higher applied levels of line pressure.

  19. Understanding Hydraulic Processes Primary Investigator: Frank H. Quinn

    E-Print Network [OSTI]

    Understanding Hydraulic Processes Primary Investigator: Frank H. Quinn Overview The hydraulic and connecting channel hydraulics models for use in Great Lakes water resource studies. 2000 Plans Niagara River Hydraulic Studies: Detailed analysis of the impact of hydraulic regime changes in the Niagara River

  20. Advanced Reactor Thermal Hydraulic Modeling | Argonne Leadership...

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

    Fischer (ANL), Aleks Obabko (ANL), and Hank Childs (LBNL) Advanced Reactor Thermal Hydraulic Modeling PI Name: Paul Fischer PI Email: fischer@mcs.anl.gov Institution: Argonne...

  1. Microseismic Tracer Particles for Hydraulic Fracturing

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

    The trend toward production of hydrocarbons from unconventional reservoirs (tight gas, shale oilgas) has caused a large increase in the use of hydraulic fracture stimulation of...

  2. 25 kWe solar thermal stirling hydraulic engine system: Final conceptual design report

    SciTech Connect (OSTI)

    Not Available

    1988-01-01T23:59:59.000Z

    This report documents the conceptual design and analysis of a solar thermal free-piston Stirling hydraulic engine system designed to deliver 25 kWe when coupled to the 11-meter Test Bed Concentrator at Sandia National Laboratories. A manufacturing cost assessment for 10,000 units per year was made by Pioneer Engineering and Manufacturing. The design meets all program objectives including a 60,000-hr design life, dynamic balancing, fully automated control, >33.3% overall system efficiency, properly conditioned power, maximum utilization of annualized insolation, and projected production costs of $300/kW. The system incorporates a simple, rugged, reliable pool boiler reflux heat pipe to transfer heat from the solar receiver to the Stirling engine. The free-piston engine produces high-pressure hydraulic flow which powers a commercial hydraulic motor that, in turn, drives a commercial rotary induction generator. The Stirling hydraulic engine uses hermetic bellows seals to separate helium working gas from hydraulic fluid which provides hydrodynamic lubrication to all moving parts. Maximum utilization of highly refined, field proven commercial components for electric power generation minimizes development cost and risk. The engine design is based on a highly refined Stirling hydraulic engine developed over 20 years as a fully implantable artificial heart power source. 4 refs., 19 figs., 3 tabs.

  3. Coordinated studies in support of hydraulic fracturing of coalbed methane. Annual report, January 1993-April 1994

    SciTech Connect (OSTI)

    Penny, G.S.; Conway, M.W.

    1994-08-01T23:59:59.000Z

    The production of natural gas from coal typically requires stimulation in the form of hydraulic fracturing and, more recently, cavity completions. The results of hydraulic fracturing treatments have ranged from extremely successful to less than satisfactory. The purpose of this work is to characterize common and potential fracturing fluids in terms of coal-fluid interactions to identify reasons for less than satisfactory performance and to ultimately devise alternative fluids and treatment procedures to optimize production following hydraulic fracturing. The laboratory data reported herein has proven helpful in designing improved hydraulic fracturing treatments and remedial treatments in the Black Warrior Basin. Acid inhibitors, scale inhibitors, additives to improve coal relative permeability to gas, and non-damaging polymer systems for hydraulic fracturing have been screened in coal damage tests. The optimum conditions for creating field-like foams in the laboratory have been explored. Tests have been run to identify minimum polymer and surfactant concentrations for applications of foam in coal. The roll of 100 mesh sand in controlling leakoff and impairing conductivity in coal has been investigated. The leakoff and proppant transport of fluids with breaker has been investigated and recommendations have been made for breaker application to minimize damage potential in coal. A data base called COAL`S has been created in Paradox (trademark) for Windows to catalogue coalbed methane activities in the Black Warrior and San Juan Basins.

  4. Effect of Curing Environment on the Performance Properties of Saltstone - 13335

    SciTech Connect (OSTI)

    Reigel, Marissa M.; Pickenheim, Bradley R.; Daniel, William E. [Savannah River National Laboratory, Aiken, SC 29808 (United States)] [Savannah River National Laboratory, Aiken, SC 29808 (United States)

    2013-07-01T23:59:59.000Z

    At the Savannah River Site (SRS), the low level radioactive waste (LLW) salt solution is immobilized as a cementitious waste form known as Saltstone. Depending on the Saltstone formulation, disposal unit size, environmental conditions and pour schedule, the waste form temperature, due to exothermic hydration reactions, can gradually increase by 30 deg. C to 50 deg. C above the starting temperature. Previous studies at Savannah River National Laboratory (SRNL) have shown that curing temperature has a negative impact on the hydraulic conductivity and other performance properties of Saltstone; specifically, these studies have shown that curing at elevated temperatures results in faster hydraulic conductivities than what is modeled in the Saltstone Performance Assessment (PA). SRNL is currently testing the performance of laboratory prepared Saltstone cured under controlled conditions (i.e. controlling relative humidity). The PA assumes that the Saltstone remains saturated; therefore, some samples are being kept completely saturated while others have a surface exposed to a high humidity environment. The formulation of these samples has been varied to continue studying the impact of processing parameters on the performance properties of Saltstone. The final water to premix (w/p) ratio of the Saltstone formulation does affect the density, porosity, and compressive strength of the cured Saltstone. The Saltstone formulations with 0.59 w/p ratios and lower had higher densities, lower porosities, and higher compressive strength than samples formulated at a higher w/p ratio. There is a general trend that the samples formulated at high w/p ratios (0.67 and higher) have the lowest density, highest porosity and lowest strength. However, for hydraulic conductivity, the curing environment had a greater effect on the results than the formulation. Therefore, the impact of elevated temperature is not as detrimental to the performance of the waste form as originally concluded, provided the curing environment is controlled and the waste form is not dried out. (authors)

  5. Control rod drive hydraulic system

    DOE Patents [OSTI]

    Ose, Richard A. (San Jose, CA)

    1992-01-01T23:59:59.000Z

    A hydraulic system for a control rod drive (CRD) includes a variable output-pressure CR pump operable in a charging mode for providing pressurized fluid at a charging pressure, and in a normal mode for providing the pressurized fluid at a purge pressure, less than the charging pressure. Charging and purge lines are disposed in parallel flow between the CRD pump and the CRD. A hydraulic control unit is disposed in flow communication in the charging line and includes a scram accumulator. An isolation valve is provided in the charging line between the CRD pump and the scram accumulator. A controller is operatively connected to the CRD pump and the isolation valve and is effective for opening the isolation valve and operating the CRD pump in a charging mode for charging the scram accumulator, and closing the isolation valve and operating the CRD pump in a normal mode for providing to the CRD through the purge line the pressurized fluid at a purge pressure lower than the charging pressure.

  6. Soil Hydraulic Characteristics of a Small Southwest Oregon Watershed Following

    E-Print Network [OSTI]

    Standiford, Richard B.

    --------------------------------------------- Soil Hydraulic Characteristics of a Small Southwest by a high-intensity burn over areas of steep topography. The areal distribution of soil hydraulic of infiltration capacity, saturated hydraulic conductivity, and soil moisture characteristics. Also, measures

  7. Effective hydraulic conductivity of bounded, strongly heterogeneous porous media

    E-Print Network [OSTI]

    Tartakovsky, Daniel M.

    Effective hydraulic conductivity of bounded, strongly heterogeneous porous media Evangelos K of Arizona, Tucson Abstract. We develop analytical expressions for the effective hydraulic conductivity Ke boundaries. The log hydraulic conductivity Y forms a Gaussian, statistically homogeneous and anisotropic

  8. Hydraulic and slurry flows through a channel contraction

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    Hydraulic and slurry flows through a channel contraction Onno Bokhove o, Twente #12;Hydraulic flow through channel contraction Outline · 1. Introduction · 2. Experiments · 3. Conclusions · References ISSF 2008 University of Twente Page 2 #12;Hydraulic flow through channel contraction

  9. Grundfos HVAC OEM Efficient water hydraulics

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    complexity ·20 years of experience in hydraulics for the Boiler System industry. ·Key success factor is our Benefits with an integrated solution #12;Heat pump unit with storage tank 1 2 Efficient water hydraulics 3 return Heatin g supply Cold wate r Hot water PRV Drain 3 way valve 1 2 3 air ventPT Grundfos flow sensor

  10. Mercury Contamination from Hydraulic Placer-Gold Mining in the Dutch Flat Mining

    E-Print Network [OSTI]

    179 Mercury Contamination from Hydraulic Placer-Gold Mining in the Dutch Flat Mining District at historic gold mining sites represents a potential risk to human health and the environment. Elemental mercury (quicksilver) was used extensively for the recovery of gold at both placer and hardrock mines

  11. Creation of an Engineered Geothermal System through Hydraulic...

    Office of Environmental Management (EM)

    Creation of an Engineered Geothermal System through Hydraulic and Thermal Stimulation Creation of an Engineered Geothermal System through Hydraulic and Thermal Stimulation Project...

  12. Fracture Evolution Following a Hydraulic Stimulation within an...

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

    Evolution Following a Hydraulic Stimulation within an EGS Reservoir Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir Fracture Evolution Following a...

  13. RPSEA UNCONVENTIONAL GAS CONFERENCE 2012: Geology, the Environment, Hydraulic Fracturing

    E-Print Network [OSTI]

    Yener, Aylin

    Recovery and Salt Production - Jim Silva, GE Oil & Gas 9:30 a.m. Appalachian Shale and Barnett Area Water Shale Coalition 8:30 a.m. Meeting Overview & Agenda - Kent Perry, Vice President, Onshore Programs Isotope Interpretation Tools to Optimize Gas Shale Production - Yongchun Tang, PEER Institute Shale Gas

  14. Hydraulically amplified PZT mems actuator

    DOE Patents [OSTI]

    Miles, Robin R.

    2004-11-02T23:59:59.000Z

    A hydraulically amplified microelectromechanical systems actuator. A piece of piezoelectric material or stacked piezo bimorph is bonded or deposited as a thin film. The piece is operatively connected to a primary membrane. A reservoir is operatively connected to the primary membrane. The reservoir contains a fluid. A membrane is operatively connected to the reservoir. In operation, energizing the piezoelectric material causing the piezoelectric material to bow. Bowing of the piezoelectric material causes movement of the primary membrane. Movement of the primary membrane results in a force in being transmitted to the liquid in the reservoir. The force in the liquid causes movement of the membrane. Movement of the membrane results in an operating actuator.

  15. Nanocoatings for High-Efficiency Industrial Hydraulic and Tooling Systems

    SciTech Connect (OSTI)

    Clifton B. Higdon III

    2011-01-07T23:59:59.000Z

    Industrial manufacturing in the U.S. accounts for roughly one third of the 98 quadrillion Btu total energy consumption. Motor system losses amount to 1.3 quadrillion Btu, which represents the largest proportional loss of any end-use category, while pumps alone represent over 574 trillion BTU (TBTU) of energy loss each year. The efficiency of machines with moving components is a function of the amount of energy lost to heat because of friction between contacting surfaces. The friction between these interfaces also contributes to downtime and the loss of productivity through component wear and subsequent repair. The production of new replacement parts requires additional energy. Among efforts to reduce energy losses, wear-resistant, low-friction coatings on rotating and sliding components offer a promising approach that is fully compatible with existing equipment and processes. In addition to lubrication, one of the most desirable solutions is to apply a protective coating or surface treatment to rotating or sliding components to reduce their friction coefficients, thereby leading to reduced wear. Historically, a number of materials such as diamond-like carbon (DLC), titanium nitride (TiN), titanium aluminum nitride (TiAlN), and tungsten carbide (WC) have been examined as tribological coatings. The primary objective of this project was the development of a variety of thin film nanocoatings, derived from the AlMgB14 system, with a focus on reducing wear and friction in both industrial hydraulics and cutting tool applications. Proof-of-concept studies leading up to this project had shown that the constituent phases, AlMgB14 and TiB2, were capable of producing low-friction coatings by pulsed laser deposition. These coatings combine high hardness with a low friction coefficient, and were shown to substantially reduce wear in laboratory tribology tests. Selection of the two applications was based largely on the concept of improved mechanical interface efficiencies for energy conservation. In mobile hydraulic systems, efficiency gains through low friction would translate into improved fuel economy and fewer greenhouse gas emissions. Stationary hydraulic systems, accordingly, would consume less electrical power. Reduced tooling wear in machining operations would translate to greater operating yields, while lowering the energy consumed during processing. The AlMgB14 nanocoatings technology progressed beyond baseline laboratory tests into measurable energy savings and enhancements to product durability. Three key hydraulic markets were identified over the course of the project that will benefit from implementation: industrial vane pumps, orbiting valve-in-star hydraulic motors, and variable displacement piston pumps. In the vane pump application, the overall product efficiency was improved by as much as 11%. Similar results were observed with the hydraulic motors tested, where efficiency gains of over 10% were noted. For variable displacement piston pumps, overall efficiency was improved by 5%. For cutting tools, the most significant gains in productivity (and, accordingly, the efficiency of the machining process as a whole) were associated with the roughing and finishing of titanium components for aerospace systems. Use of the AlMgB14 nanocoating in customer field tests has shown that the coated tools were able to withstand machining rates as high as 500sfm (limited only by the substrate material), with relatively low flank wear when compared to other industrial offerings. AlMgB14 coated tools exhibited a 60% improvement over similarly applied TiAlN thin films. Furthermore, AlMgB14-based coatings in these particular tests lasted twice as long than their TiAlN counterparts at the 500sfm feed rates. Full implementation of the technology into the industrial hydraulic and cutting tool markets equates to a worldwide energy savings of 46 trillion BTU/year by 2030. U.S.-based GHG emissions associated with the markets identified would fall accordingly, dropping by as much as 50,000 tonnes annually.

  16. Selected factors influencing GCL hydraulic conductivity

    SciTech Connect (OSTI)

    Petrov, R.J. [Trow Consulting Engineers Ltd., Brampton, Ontario (Canada); Rowe, R.K.; Quigley, R.M. [Univ. of Western Ontario, London, Ontario (Canada)

    1997-08-01T23:59:59.000Z

    A series of confined swell and hydraulic conductivity tests were conducted on a needle-punched geosynthetic clay liner (GCL) with water as the hydrating medium and reference permeant. Increases in the static confining stress and the needle-punching both restricted GCL swell and contributed to lower bulk GCL void ratios and hence significantly lower hydraulic conductivity values. A well defined linear-log relationship is found between the bulk void ratio and hydraulic conductivity. The number of pore volumes of permeant flow and consequently the level of chemical equilibrium is shown to have a significant effect on the hydraulic conductivity. It is shown that there is a decrease in hydraulic conductivity for small amounts of permeant flow for all ethanol/water mixtures examined. At or near chemical equilibrium, low concentration mixtures (25 and 50% ethanol) continued to produce relative decreases in GCL hydraulic conductivity due to the increased viscosity of the permeant; however, highly concentrated mixtures (75 and 100% ethanol) produced relative increases in GCL hydraulic conductivity arising from double layer contraction. The implications are discussed.

  17. BROOKHAVEN NATIONAL LABORATORY SITE ENVIRONMENTAL REPORT FOR CALENDAR YEAR 1994.

    SciTech Connect (OSTI)

    NAIDU,J.R.; ROYCE,B.A.

    1995-05-01T23:59:59.000Z

    This report documents the results of the Environmental Monitoring Program at Brookhaven National Laboratory and presents summary information about environmental compliance for 1994. To evaluate the effect of Brookhaven National Laboratory's operations on the local environment, measurements of direct radiation, and a variety of radionuclides and chemical compounds in ambient air, soil, sewage effluent, surface water, groundwater, fauna and vegetation were made at the Brookhaven National Laboratory site and at sites adjacent to the Laboratory. Brookhaven National Laboratory's compliance with all applicable guides, standards, and limits for radiological and nonradiological emissions and effluents to the environment were evaluated. Among the permitted facilities, two instances of pH exceedances were observed at recharge basins, possibly related to rain-water run-off to these recharge basins. Also, the discharge from the Sewage Treatment Plant to the Peconic River exceeded. on ten occasions, one each for fecal coliform and 5-day Biochemical Oxygen Demand (avg.) and eight for ammonia nitrogen. The ammonia and Biochemical Oxygen Demand exceedances were attributed to the cold winter and the routine cultivation of the sand filter beds which resulted in the hydraulic overloading of the filter beds and the possible destruction of nitrifying bacteria. The on-set of warm weather and increased aeration of the filter beds via cultivation helped to alleviate this condition. The discharge of fecal coliform may also be linked to this occurrence, in that the increase in fecal coliform coincided with the increased cultivation of the sand filter beds. The environmental monitoring data has identified site-specific contamination of groundwater and soil. These areas are subject to Remedial Investigation/Feasibility Studies under the Inter Agency Agreement. Except for the above, the environmental monitoring data has continued to demonstrate that compliance was achieved with applicable environmental laws and regulations governing emission and discharge of materials to the environment, and that the environmental impacts at Brookhaven National Laboratory are minimal and pose no threat to the public or to the environment. This report meets the requirements of Department of Energy Orders 5484.1, Environmental Protection, Safety, and Health Protection Information reporting requirements and 5400.1, General Environmental Protection Programs.

  18. Advanced Hydraulic Fracturing Technology for Unconventional Tight Gas Reservoirs

    SciTech Connect (OSTI)

    Stephen Holditch; A. Daniel Hill; D. Zhu

    2007-06-19T23:59:59.000Z

    The objectives of this project are to develop and test new techniques for creating extensive, conductive hydraulic fractures in unconventional tight gas reservoirs by statistically assessing the productivity achieved in hundreds of field treatments with a variety of current fracturing practices ranging from 'water fracs' to conventional gel fracture treatments; by laboratory measurements of the conductivity created with high rate proppant fracturing using an entirely new conductivity test - the 'dynamic fracture conductivity test'; and by developing design models to implement the optimal fracture treatments determined from the field assessment and the laboratory measurements. One of the tasks of this project is to create an 'advisor' or expert system for completion, production and stimulation of tight gas reservoirs. A central part of this study is an extensive survey of the productivity of hundreds of tight gas wells that have been hydraulically fractured. We have been doing an extensive literature search of the SPE eLibrary, DOE, Gas Technology Institute (GTI), Bureau of Economic Geology and IHS Energy, for publicly available technical reports about procedures of drilling, completion and production of the tight gas wells. We have downloaded numerous papers and read and summarized the information to build a database that will contain field treatment data, organized by geographic location, and hydraulic fracture treatment design data, organized by the treatment type. We have conducted experimental study on 'dynamic fracture conductivity' created when proppant slurries are pumped into hydraulic fractures in tight gas sands. Unlike conventional fracture conductivity tests in which proppant is loaded into the fracture artificially; we pump proppant/frac fluid slurries into a fracture cell, dynamically placing the proppant just as it occurs in the field. From such tests, we expect to gain new insights into some of the critical issues in tight gas fracturing, in particular the roles of gel damage, polymer loading (water-frac versus gel frac), and proppant concentration on the created fracture conductivity. To achieve this objective, we have designed the experimental apparatus to conduct the dynamic fracture conductivity tests. The experimental apparatus has been built and some preliminary tests have been conducted to test the apparatus.

  19. Analysis of Small-Scale Hydraulic Systems Jicheng Xia

    E-Print Network [OSTI]

    Durfee, William K.

    power density in a hydraulic system are the design the containing structure and the seals. There has, MN, 55455 Email: wkdurfee@umn.edu We investigated small-scale hydraulic power system using a system- mine whether the high power density advantage of hydraulic power system holds at small sizes. Hydraulic

  20. Fault Detection, Identification and Accommodation for an Electro-hydraulic

    E-Print Network [OSTI]

    Yao, Bin

    Fault Detection, Identification and Accommodation for an Electro-hydraulic System: An Adaptive in electro-hydraulic systems. It is well known fact that any realistic model of a hydraulic system suffers, such a scheme becomes a natural choice for designing robust fault detection algorithms for electro-hydraulic

  1. Argonne National Laboratory is a U.S. Department of Energy laboratory managed by UChicago Argonne, LLC

    E-Print Network [OSTI]

    Kemner, Ken

    Argonne National Laboratory is a U.S. Department of Energy laboratory managed by UChicago Argonne Generation Nuclear Plant Argonne's Nuclear Engineering Division is actively participating in the development, thermal-hydraulics, structural mechanics, safety, and fuel cycle technologies. Argonne also contributes

  2. Acoustic Character Of Hydraulic Fractures In Granite

    E-Print Network [OSTI]

    Paillet, Frederick I.

    1983-01-01T23:59:59.000Z

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

  3. Gas condensate damage in hydraulically fractured wells

    E-Print Network [OSTI]

    Adeyeye, Adedeji Ayoola

    2004-09-30T23:59:59.000Z

    Company. The well was producing a gas condensate reservoir and questions were raised about how much drop in flowing bottomhole pressure below dewpoint would be appropriate. Condensate damage in the hydraulic fracture was expected to be of significant...

  4. Geomechanical review of hydraulic fracturing technology

    E-Print Network [OSTI]

    Arop, Julius Bankong

    2013-01-01T23:59:59.000Z

    Hydraulic fracturing as a method for recovering unconventional shale gas has been around for several decades. Significant research and improvement in field methods have been documented in literature on the subject. The ...

  5. Self-potential observations during hydraulic fracturing

    E-Print Network [OSTI]

    Moore, Jeffrey R.; Glaser, Steven D.

    2008-01-01T23:59:59.000Z

    during hydraulic fracturing Moore and Glaser, in press JGR,press JGR, B – 2006JB004373 where m is the average hydraulichydraulic fracturing with water. Moore and Glaser, in press

  6. HYDRAULIC CEMENT PREPARATION FROM LURGI SPENT SHALE

    E-Print Network [OSTI]

    Mehta, P.K.

    2013-01-01T23:59:59.000Z

    hydraulic cement from spent oil shale," Vol. 10, No. 4, p.J. W. , "Colorado's primary oil shale resource for verticalSimulated effects of oil-shale development on the hydrology

  7. Advanced Technology for Railway Hydraulic Hazard Forecasting

    E-Print Network [OSTI]

    Huff, William Edward 1988-

    2012-12-05T23:59:59.000Z

    Page 1.1 Map of Total Railway Hydraulic Hazard Events from 1982-2011 ............ 2 1.2 90 mi Effective Radar Coverage for Reliable Rainfall Rate Determination ....................................................................... 5 3... Administration (FRA) for the period of 1982-2011. This data was compiled from the FRA Office of Safety Analysis website (FRA, 2011). A map of the railway hydraulic hazard events over the same time period is displayed in Figure 1.1. Table 1.1. U.S. Railway...

  8. Appendix A. Hydraulic Properties Statistics Tables Table A1. Hydraulic properties statistics for the alluvium (Stephens et al.).

    E-Print Network [OSTI]

    A-1 Appendix A. Hydraulic Properties Statistics Tables Table A1. Hydraulic properties statistics Deviation .1708 4.274 28.95 Harmonic Mean Number of Observations 9 8 8 2 2 2 2 2 Table A2. Hydraulic.3×10-5 Number of Observations 10 10 10 34 34 4 4 4 #12;A-2 Table A3. Hydraulic properties statistics

  9. P. Cruiziat et al.Hydraulic architecture of trees Hydraulic architecture of trees: main concepts and results

    E-Print Network [OSTI]

    Boyer, Edmond

    P. Cruiziat et al.Hydraulic architecture of trees Review Hydraulic architecture of trees: main March 2001; accepted 13 February 2002) Abstract ­ Since about twenty years, hydraulic architecture (h. This review encompasses the main concepts and results concerning the hydraulic of architecture of trees. After

  10. Hydraulic multistage turbine of turbodrill

    SciTech Connect (OSTI)

    Brudny-Chelyadinov, S.J.; Budyansky, V.S.; Filimonov, V.A.

    1987-06-30T23:59:59.000Z

    This patent describes a turbodrill provided with a rock destruction tool for drilling wells, a hydraulic turbine for driving the rock destruction tool under the action of a drilling fluid, comprising: identical stages formed by one stator and one rotor; the stator of one stage; a spacing sleeve of the stator; a ring of the stator incorporating: a hub; a blading formed by a multitude of blades equally spaced on the inside of the hub of the stator ring; a rim secured to the blades at the tips away from the hub, and a flow channel for passing the drilling fluid arranged between the hub and the rim, and accommodating the blading; blades of the blading which, at least in a number of the stator rings from the plurality of stages, are made with an angle of curvature of the chamber line being greater than an acute angle formed by the tangent to this line at the exit of the blading and the axis of drilling fluid flow; the rotor of one state arranged coaxially with the stator; a spacing sleeve of the rotor; and a ring of the rotor.

  11. Parker Hybrid Hydraulic Drivetrain Demonstration

    SciTech Connect (OSTI)

    Collett, Raymond [Parker-Hannifin Corporation, Cleveland, OH (United States); Howland, James [Parker-Hannifin Corporation, Cleveland, OH (United States); Venkiteswaran, Prasad [National Energy Technology Lab. (NETL), Morgantown, WV (United States)

    2014-03-31T23:59:59.000Z

    This report examines the benefits of Parker Hannifin hydraulic hybrid brake energy recovery systems used in commercial applications for vocational purposes. A detailed background on the problem statement being addressed as well as the solution set specific for parcel delivery will be provided. Objectives of the demonstration performed in high start & stop applications included opportunities in fuel usage reduction, emissions reduction, vehicle productivity, and vehicle maintenance. Completed findings during the demonstration period and parallel investigations with NREL, CALSTART, along with a literature review will be provided herein on this research area. Lastly, results identified in the study by third parties validated the savings potential in fuel reduction of on average of 19% to 52% over the baseline in terms of mpg (Lammert, 2014, p11), Parker data for parcel delivery vehicles in the field parallels this at a range of 35% - 50%, emissions reduction of 17.4% lower CO2 per mile and 30.4% lower NOx per mile (Gallo, 2014, p15), with maintenance improvement in the areas of brake and starter replacement, while leaving room for further study in the area of productivity in terms of specific metrics that can be applied and studied.

  12. INL Experimental Program Roadmap for Thermal Hydraulic Code Validation

    SciTech Connect (OSTI)

    Glenn McCreery; Hugh McIlroy

    2007-09-01T23:59:59.000Z

    Advanced computer modeling and simulation tools and protocols will be heavily relied on for a wide variety of system studies, engineering design activities, and other aspects of the Next Generation Nuclear Power (NGNP) Very High Temperature Reactor (VHTR), the DOE Global Nuclear Energy Partnership (GNEP), and light-water reactors. The goal is for all modeling and simulation tools to be demonstrated accurate and reliable through a formal Verification and Validation (V&V) process, especially where such tools are to be used to establish safety margins and support regulatory compliance, or to design a system in a manner that reduces the role of expensive mockups and prototypes. Recent literature identifies specific experimental principles that must be followed in order to insure that experimental data meet the standards required for a “benchmark” database. Even for well conducted experiments, missing experimental details, such as geometrical definition, data reduction procedures, and manufacturing tolerances have led to poor Benchmark calculations. The INL has a long and deep history of research in thermal hydraulics, especially in the 1960s through 1980s when many programs such as LOFT and Semiscle were devoted to light-water reactor safety research, the EBRII fast reactor was in operation, and a strong geothermal energy program was established. The past can serve as a partial guide for reinvigorating thermal hydraulic research at the laboratory. However, new research programs need to fully incorporate modern experimental methods such as measurement techniques using the latest instrumentation, computerized data reduction, and scaling methodology. The path forward for establishing experimental research for code model validation will require benchmark experiments conducted in suitable facilities located at the INL. This document describes thermal hydraulic facility requirements and candidate buildings and presents examples of suitable validation experiments related to VHTRs, sodium-cooled fast reactors, and light-water reactors. These experiments range from relatively low-cost benchtop experiments for investigating individual phenomena to large electrically-heated integral facilities for investigating reactor accidents and transients.

  13. The Political History of Hydraulic Fracturing’s Expansion Across the West

    E-Print Network [OSTI]

    Forbis, Robert E.

    2014-01-01T23:59:59.000Z

    Political History of Hydraulic Fracturing’s Expansion AcrossPolitical History of Hydraulic Fracturing’s Expansion Acrosss use of the hydraulic fracturing development process.

  14. Acoustic Emission in a Fluid Saturated Hetergeneous Porous Layer with Application to Hydraulic Fracture

    E-Print Network [OSTI]

    Nelson, J.T.

    2009-01-01T23:59:59.000Z

    responses during hydraulic fracturing, and aid developmentFracture Monitoring Hydraulic fracturing is a method forfluids" used for hydraulic fracturing, the above frequencies

  15. HYDRAULIC FRACTURING AND OVERCORING STRESS MEASUREMENTS IN A DEEP BOREHOLE AT THE STRIPA TEST MINE, SWEDEN

    E-Print Network [OSTI]

    Doe, T.

    2010-01-01T23:59:59.000Z

    u l y 2 , 1 9 8 1 HYDRAULIC FRACTURING AND OVERCORING STRESSI nun LBL-12478 HYDRAULIC FRACTURING AND OVERCORING STRESSthe calculated stress. n HYDRAULIC FRACTURING EQUIPMENT AND

  16. Independent Oversight Inspection, Lawrence Livermore National Laboratory, Summary Report- July 2002

    Broader source: Energy.gov [DOE]

    Inspection of Environment, Safety, and Health and Emergency Management at the Lawrence Livermore National Laboratory

  17. Independent Oversight Inspection, Lawrence Livermore National Laboratory, Volume I- December 2004

    Broader source: Energy.gov [DOE]

    Inspection of Environment, Safety, and Health Management at the Lawrence Livermore National Laboratory

  18. Science Undergraduate Laboratory Internship Program | Argonne...

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

    SULI FACT SHEET Contact undergrad@anl.gov Science Undergraduate Laboratory Internship "My perspective on how the research environment was broadened. I am more aware of the...

  19. Sandia National Laboratories: About Sandia: Environmental Responsibili...

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

    Environment, Safety & Health Policy Policy Statement It is the policy of Sandia National Laboratories to perform work in a safe and environmentally responsible manner by committing...

  20. Universal asymptotic umbrella for hydraulic fracture modeling

    E-Print Network [OSTI]

    Linkov, Aleksandr M

    2014-01-01T23:59:59.000Z

    The paper presents universal asymptotic solution needed for efficient modeling of hydraulic fractures. We show that when neglecting the lag, there is universal asymptotic equation for the near-front opening. It appears that apart from the mechanical properties of fluid and rock, the asymptotic opening depends merely on the local speed of fracture propagation. This implies that, on one hand, the global problem is ill-posed, when trying to solve it as a boundary value problem under a fixed position of the front. On the other hand, when properly used, the universal asymptotics drastically facilitates solving hydraulic fracture problems (both analytically and numerically). We derive simple universal asymptotics and comment on their employment for efficient numerical simulation of hydraulic fractures, in particular, by well-established Level Set and Fast Marching Methods.

  1. Hydraulic dredging, a sediment removal technique

    SciTech Connect (OSTI)

    Spotts, J.W.

    1980-12-01T23:59:59.000Z

    Sediment was successfully removed from a Peabody Coal Company pond near Macon, Missouri, by a Mud Cat Model SP-810 hydraulic dredge. Previous attempts using land-based equipment had been unsatisfactory. The hydraulic-powered auger and submerged pump easily removed 882 m/sup 3/ (1154 yd/sup 3/) and pumped the slurry a distance of 305 m (1000 ft) to a disposal area. The hydraulic dredge was more effective and cheaper to operate than land-based equipment. The dredge cost was $1.31/m/sup 3/ ($1.00/yd/sup 3/), the dragline cost was $6.54/m/sup 3/ ($5.00/yd/sup 3/) and the front-end loader cost was $15.70/m/sup 3/ ($12.00/yd/sup 3/), under optimum conditions.

  2. The hydraulic jump as a white hole

    E-Print Network [OSTI]

    G. E. Volovik

    2005-10-21T23:59:59.000Z

    In the geometry of the circular hydraulic jump, the velocity of the liquid in the interior region exceeds the speed of capillary-gravity waves (ripplons), whose spectrum is `relativistic' in the shallow water limit. The velocity flow is radial and outward, and thus the relativistic ripplons cannot propagating into the interior region. In terms of the effective 2+1 dimensional Painleve-Gullstrand metric appropriate for the propagating ripplons, the interior region imitates the white hole. The hydraulic jump represents the physical singularity at the white-hole horizon. The instability of the vacuum in the ergoregion inside the circular hydraulic jump and its observation in recent experiments on superfluid 4He by E. Rolley, C. Guthmann, M.S. Pettersen and C. Chevallier in physics/0508200 are discussed.

  3. active living environment: Topics by E-print Network

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

    and physical activity environment audit tools Keinan, Alon 146 Developing solutions for sustainable living-the Urban Living Laboratory: The world's largest 'living laboratory'...

  4. Hydraulic Interaction between Geosynthetic Drainage Layers and Unsaturated Low Plasticity Clay

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    1 Hydraulic Interaction between Geosynthetic Drainage Layers and Unsaturated Low Plasticity Clay of soil density on the hydraulic interaction between unsaturated, low plasticity clay and geosynthetic drainage layers. The hydraulic interaction was evaluated using the system hydraulic conductivity, moisture

  5. PARTITIONED ANALYSIS FOR DIMENSIONALLY-HETEROGENEOUS HYDRAULIC NETWORKS*

    E-Print Network [OSTI]

    Buscaglia, Gustavo C.

    PARTITIONED ANALYSIS FOR DIMENSIONALLY-HETEROGENEOUS HYDRAULIC NETWORKS* JORGE S. LEIVA , PABLO J for which this procedure is envisaged arises when modeling hydraulic networks in which complex and simple

  6. Simulation of Hydraulic Fractures and their Interactions with Natural Fractures

    E-Print Network [OSTI]

    Sesetty, Varahanaresh

    2012-10-19T23:59:59.000Z

    Modeling the stimulated reservoir volume during hydraulic fracturing is important to geothermal and petroleum reservoir stimulation. The interaction between a hydraulic fracture and pre-existing natural fractures exerts significant control...

  7. Effectiveness of microseismic monitoring for optimizing hydraulic fracturing in California

    E-Print Network [OSTI]

    Alampi, Ann M

    2014-01-01T23:59:59.000Z

    Hydraulic fracturing has fundamentally changed the oil and gas industry in the past 10 years. Bakersfield, California provides a unique case study because steam injection, a type of hydraulic fracturing, has been used there ...

  8. Study on creating hydraulic tomography for crystalline rock using frequency dependent elastic wave velocity

    SciTech Connect (OSTI)

    Yoshimura, K.; Sakashita, S. [Radioactive Waste Management Funding and Research Center, Tokyo (Japan); Ando, K.; Bruines, P. [Civil Engineering Technical Division, Obayashi Corporation, Tokyo (Japan); Blechschmidt, I. [National Cooperative for the Disposal of Radioactive Waste, Wettingen (Switzerland); Kickmaier, W. [University of Applied Sciences, Northern Switzerland, Brugg (Switzerland); Onishi, Y.; Nishiyama, S. [Graduate School of Engineering, Kyoto University, Kyoto (Japan)

    2007-07-01T23:59:59.000Z

    The objective of this study is to establish a technique to obtain hydraulic conductivity distribution in granite rock masses using seismic tomography. We apply the characteristic that elastic wave velocity disperses in fully saturated porous media on frequency and this velocity dispersion is governed by the hydraulic conductivity - this characteristic has been confirmed in laboratory experiments. The feasibility and design of the field experiment was demonstrated in a first step with numerical simulations. In a second step we applied the technique to the fractured granite at the Grimsel Test Site in Switzerland. The emphasis of the field campaign was on the evaluation of the range of applicability of this technique. The field campaign was structured in three steps, each one corresponding to a larger spatial scale. First, the seismic tomography was applied to a small area - the two boreholes were located at a distance of 1.5 m. In the following step, we selected a larger area, in which the distance of the boreholes amounts to 10 m and the field corresponds to a more complex geology. Finally we applied the testing to a field where the borehole distance was of the order of 75 m. We also drilled a borehole to confirm hydraulic characteristic and reviewed hydraulic model in the 1.5 m cross-hole location area. The results from the field campaign are presented and their application to the various fields are discussed and evaluated. (authors)

  9. Marcellus Shale Drilling and Hydraulic Fracturing; Technicalities and

    E-Print Network [OSTI]

    Jiang, Huiqiang

    Pipe · Air Rotary Drilling Rig · Hydraulic Rotary Drilling Rig ­ Barite/Bentonite infused drilling muds

  10. Vehicle hydraulic system that provides heat for passenger compartment

    DOE Patents [OSTI]

    Bartley, Bradley E. (Manito, IL); Blass, James R. (Bloomington, IL); Gibson, Dennis H. (Chillicothe, IL)

    2001-01-01T23:59:59.000Z

    A vehicle includes a vehicle housing which defines a passenger compartment. Attached to the vehicle housing is a hydraulic system, that includes a hydraulic fluid which flows through at least one passageway within the hydraulic system. Also attached to the vehicle housing is a passenger compartment heating system. The passenger compartment heating system includes a heat exchanger, wherein a portion of the heat exchanger is a segment of the at least one passageway of the hydraulic system.

  11. Engineered Barrier Systems Thermal-Hydraulic-Chemical Column Test Report

    SciTech Connect (OSTI)

    W.E. Lowry

    2001-12-13T23:59:59.000Z

    The Engineered Barrier System (EBS) Thermal-Hydraulic-Chemical (THC) Column Tests provide data needed for model validation. The EBS Degradation, Flow, and Transport Process Modeling Report (PMR) will be based on supporting models for in-drift THC coupled processes, and the in-drift physical and chemical environment. These models describe the complex chemical interaction of EBS materials, including granular materials, with the thermal and hydrologic conditions that will be present in the repository emplacement drifts. Of particular interest are the coupled processes that result in mineral and salt dissolution/precipitation in the EBS environment. Test data are needed for thermal, hydrologic, and geochemical model validation and to support selection of introduced materials (CRWMS M&O 1999c). These column tests evaluated granular crushed tuff as potential invert ballast or backfill material, under accelerated thermal and hydrologic environments. The objectives of the THC column testing are to: (1) Characterize THC coupled processes that could affect performance of EBS components, particularly the magnitude of permeability reduction (increases or decreases), the nature of minerals produced, and chemical fractionation (i.e., concentrative separation of salts and minerals due to boiling-point elevation). (2) Generate data for validating THC predictive models that will support the EBS Degradation, Flow, and Transport PMR, Rev. 01.

  12. Coupling schemes for modeling hydraulic fracture propagation using the XFEM

    E-Print Network [OSTI]

    Peirce, Anthony

    Coupling schemes for modeling hydraulic fracture propagation using the XFEM Elizaveta Gordeliy of hydraulic fractures in an elastic medium. With appropriate enrichment, the XFEM resolves the Neumann(h) accuracy. For hydraulic fracture problems with a lag separating the uid front from the fracture front, we

  13. Role of seepage forces on hydraulic fracturing and failure patterns

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Role of seepage forces on hydraulic fracturing and failure patterns Alexander Rozhko Thesis September 2007 #12;ii Role of seepage forces on hydraulic fracturing and failure patterns Abstract. The mechanical role of seepage forces on hydraulic fracturing and failure patterns was studied both

  14. Control of a Hydraulically-Powered, Differential Lift Project Proposal

    E-Print Network [OSTI]

    Control of a Hydraulically-Powered, Differential Lift Project Proposal Written by Thomas Johnson ME6401: Linear Control Submitted to Dr. Wayne Book 9/11/06 #12;A hydraulically-powered, differential lift representation of a differential lift can be viewed in Figure 1. Figure 1. Hydraulically-powered, differential

  15. Viscous Undular Hydraulic Jumps of Moderate Reynolds number

    E-Print Network [OSTI]

    Shyamasundar, R.K.

    Viscous Undular Hydraulic Jumps of Moderate Reynolds number Ratul Dasgupta I will present some results on undular hydraulic jumps occurring in a two bores (in rivers), where the interface remains horizontal, the moderate Reynolds hydraulic jump shows a linear increase in height due to viscosity

  16. Reply to Davies: Hydraulic fracturing remains a possible mechanism for

    E-Print Network [OSTI]

    Jackson, Robert B.

    LETTER Reply to Davies: Hydraulic fracturing remains a possible mechanism for observed methane in aquifers overlying the Marcellus formation but asserts that we prematurely ascribed its cause to hydraulic mechanisms were leaky gas well casings and the possibility that hydraulic fracturing might generate new

  17. A COUPLED HYDRAULIC AND ELECTRICAL STRESS DETERMINATION TECHNIQUE

    E-Print Network [OSTI]

    A COUPLED HYDRAULIC AND ELECTRICAL STRESS DETERMINATION TECHNIQUE Mai Linh DOAN Département de Alps. The Hydraulic Tests on Preexisting Fractures (HTPF) method was chosen for it provides means to determine the complete stress tensor. The campaign was performed with a specific probe, coupling hydraulic

  18. System Identification and Modelling of a High Performance Hydraulic Actuator

    E-Print Network [OSTI]

    Hayward, Vincent

    System Identification and Modelling of a High Performance Hydraulic Actuator Benoit Boulet, Laeeque with the experimental identification and modelling of the nonlinear dynamics ofa high performance hydraulic actuator. The actuator properties and performance are also discussed. 1 Introduction Hydraulic actuation used to be

  19. Evaluation of Hydraulic Efficiency of Disinfection Systems Based on

    E-Print Network [OSTI]

    Evaluation of Hydraulic Efficiency of Disinfection Systems Based on Residence Time Distribution. Accepted November 9, 2010. Hydraulic efficiency is a vital component in evaluating the disinfection to overestimate, severely in some instances, the actual hydraulic efficiency as obtained from the system's flow

  20. HYDRAULIC STIMULATION OF NATURAL FRACTURES AS REVEALED BY INDUCED MICROEARTHQUAKES,

    E-Print Network [OSTI]

    -1- HYDRAULIC STIMULATION OF NATURAL FRACTURES AS REVEALED BY INDUCED MICROEARTHQUAKES, CARTHAGE, December, 2001 Manuscript # 01066 LAUR# 01-1204 #12;Hydraulic Stimulation of Natural Fractures -2- ABSTRACT We have produced a high-resolution microseismic image of a hydraulic fracture stimulation

  1. Unsaturated hydraulic conductivity function based on a soil fragmentation process

    E-Print Network [OSTI]

    Tartakovsky, Daniel M.

    Unsaturated hydraulic conductivity function based on a soil fragmentation process Shmuel Assouline-parameter expression for relative hydraulic conductivity (RHC) of partially saturated soils. It is based on the premise. This assumption allows us to derive hydraulic properties of soils (water retention curves and unsaturated

  2. Efficiency Mapping for a Linear Hydraulic-Actuator

    E-Print Network [OSTI]

    Manring, Noah D.

    Efficiency Mapping for a Linear Hydraulic-Actuator Noah D. Manring Mechanical and Aerospace at generating an efficiency map for a linear hydraulic-actuator that is controlled using an open-centered 4- way- ing the efficiency improvements that may be gained for linear hydraulic-actuators that use this type

  3. ORIGINAL PAPER Hydraulic properties and embolism in small-diameter

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ORIGINAL PAPER Hydraulic properties and embolism in small-diameter roots of five temperate broad & Context It has been estimated that about half of a plant's total hydraulic resistance is located belowground, but it is not well known how temperate tree species differ in root hydraulic properties and how

  4. Weakly dispersive hydraulic flows in a contraction --Nonlinear stability analysis

    E-Print Network [OSTI]

    Ee, Bernard Kuowei

    Weakly dispersive hydraulic flows in a contraction -- Nonlinear stability analysis Bernard K. Ee hydraulic solutions of the forced Korteweg de-Vries equation is investigated here. For numerical convenience is destabilized by a hydraulic instability in which superexponential growth occurs prior to satura- tion

  5. Original article Hydraulic conductance of two co-occuring neotropical

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Original article Hydraulic conductance of two co-occuring neotropical understory shrubs December 1999) Abstract ­ Whole plant hydraulic conductance was measured for two co-occuring neotropical hydraulic con- ductance and leaf specific conducance in the drought-avoiding species, P. trigonum, than

  6. IOWA INSTITUTE OF HYDRAULIC RESEARCH COLLEGE OF ENGINEERING

    E-Print Network [OSTI]

    Stanier, Charlie

    SUMMARY OF ACTIVITIES IOWA INSTITUTE OF HYDRAULIC RESEARCH COLLEGE OF ENGINEERING THE UNIVERSITY December 1999 This report of the activities of the Iowa Institute of Hydraulic Research (IIHR) covers increasing emphasis on field measurements in environmental hydraulics and hydrometeorology and on development

  7. Hydraulic Wind Power Transfer Technology Afshin Izadian

    E-Print Network [OSTI]

    Zhou, Yaoqi

    Hydraulic Wind Power Transfer Technology Afshin Izadian Purdue School of Engineering and Technology of renewable energy tax credits in general and a gap in wind energy breakthroughs in particular have caused high cost of wind energy and technological dependency on countries such as China and Germany. Reducing

  8. March 24, 1999 Hydraulics, CIET 3132

    E-Print Network [OSTI]

    Bowen, James D.

    Test No. 2 March 24, 1999 Hydraulics, CIET 3132 Spring 1999, Bowen Page 1jdb_260.wpd Test Format in Closed Conduits (32 points) Water runs from an upper reservoir, through a turbine, to a lower reservoir, as shown below. Assuming the turbine is 80% efficient in converting the water power to mechanical power

  9. John Day Tailrace MASS2 Hydraulic Modeling

    SciTech Connect (OSTI)

    Rakowski, Cynthia L.; Richmond, Marshall C.

    2003-06-03T23:59:59.000Z

    Recent biological results for the Juvenile Bypass System at John Jay Lock and Dam have raised concerns about the hydraulic conditions that are created in the tailrace under different project operations. This Memorandum for Record discusses the development and application of a truncated MASS2 model in the John Day tailrace.

  10. Constructing Hydraulic Barriers in Deep Geologic Formations

    SciTech Connect (OSTI)

    Carter, E.E.; Carter, P.E. [Technologies Co, Texas (United States); Cooper, D.C. [Ph.D. Idaho National Laboratory, Idaho Falls, ID (United States)

    2008-07-01T23:59:59.000Z

    Many construction methods have been developed to create hydraulic barriers to depths of 30 to 50 meters, but few have been proposed for depths on the order of 500 meters. For these deep hydraulic barriers, most methods are potentially feasible for soil but not for hard rock. In the course of researching methods of isolating large subterranean blocks of oil shale, the authors have developed a wax thermal permeation method for constructing hydraulic barriers in rock to depths of over 500 meters in competent or even fractured rock as well as soil. The technology is similar to freeze wall methods, but produces a permanent barrier; and is potentially applicable in both dry and water saturated formations. Like freeze wall barriers, the wax thermal permeation method utilizes a large number of vertical or horizontal boreholes around the perimeter to be contained. However, instead of cooling the boreholes, they are heated. After heating these boreholes, a specially formulated molten wax based grout is pumped into the boreholes where it seals fractures and also permeates radially outward to form a series of columns of wax-impregnated rock. Rows of overlapping columns can then form a durable hydraulic barrier. These barriers can also be angled above a geologic repository to help prevent influx of water due to atypical rainfall events. Applications of the technique to constructing containment structures around existing shallow waste burial sites and water shutoff for mining are also described. (authors)

  11. Quantitative supersonic flow visualization by hydraulic analogy

    E-Print Network [OSTI]

    Rani, Sarma Laxminarasimha

    1998-01-01T23:59:59.000Z

    The hydraulic analogy, which forms the basis for the phics. current investigation, can be used to study supersonic gas flows with great ease by means of a water table. As a result of the analogy, water heights in free surface water flow correspond...

  12. Hydraulically actuated fuel injector including a pilot operated spool valve assembly and hydraulic system using same

    DOE Patents [OSTI]

    Shafer, Scott F. (Morton, IL)

    2002-01-01T23:59:59.000Z

    The present invention relates to hydraulic systems including hydraulically actuated fuel injectors that have a pilot operated spool valve assembly. One class of hydraulically actuated fuel injectors includes a solenoid driven pilot valve that controls the initiation of the injection event. However, during cold start conditions, hydraulic fluid, typically engine lubricating oil, is particularly viscous and is often difficult to displace through the relatively small drain path that is defined past the pilot valve member. Because the spool valve typically responds slower than expected during cold start due to the difficulty in displacing the relatively viscous oil, accurate start of injection timing can be difficult to achieve. There also exists a greater difficulty in reaching the higher end of the cold operating speed range. Therefore, the present invention utilizes a fluid evacuation valve to aid in displacement of the relatively viscous oil during cold start conditions.

  13. Coordination of stem and leaf hydraulic conductance in southern California shrubs: a test of the hydraulic segmentation

    E-Print Network [OSTI]

    Sack, Lawren

    Coordination of stem and leaf hydraulic conductance in southern California shrubs: a test of the hydraulic segmentation hypothesis Alexandria L. Pivovaroff1 , Lawren Sack2 and Louis S. Santiago1 1 2014 New Phytologist (2014) 203: 842­850 doi: 10.1111/nph.12850 Key words: chaparral, hydraulic

  14. Abstract--Encouraged by previous performance of a hydraulic bed sensor, this work presents a new hydraulic transducer

    E-Print Network [OSTI]

    He, Zhihai "Henry"

    Abstract--Encouraged by previous performance of a hydraulic bed sensor, this work presents a new hydraulic transducer configuration which improves the system's ability to capture a heartbeat signal from. II.HYDRAULIC BED SENSOR A.Transducer construction The overall procedure and materials

  15. Creating the laboratory`s future; A strategy for Lawrence Livermore National Laboratory

    SciTech Connect (OSTI)

    NONE

    1997-09-01T23:59:59.000Z

    ``Creating The Laboratory`s Future`` describes Livermore`s roles and responsibilities as a Department of Energy (DOE) national laboratory and sets the foundation for decisions about the Laboratory`s programs and operations. It summarizes Livermore`s near-term strategy, which builds on recent Lab achievements and world events affecting their future. It also discusses their programmatic and operational emphases and highlights program areas that the authors believe can grow through application of Lab science and technology. Creating the Laboratory`s Future reflects their very strong focus on national security, important changes in the character of their national security work, major efforts are under way to overhaul their administrative and operational systems, and the continuing challenge of achieving national consensus on the role of the government in energy, environment, and the biosciences.

  16. INVESTIGATION OF EFFICIENCY IMPROVEMENTS DURING CO2 INJECTION IN HYDRAULICALLY AND NATURALLY FRACTURED RESERVOIRS

    SciTech Connect (OSTI)

    David S. Schechter

    2005-04-27T23:59:59.000Z

    This report describes the work performed during the fourth year of the project, ''Investigating of Efficiency Improvements during CO{sub 2} Injection in Hydraulically and Naturally Fractured Reservoirs.'' The objective of this project is to perform unique laboratory experiments with artificially fractured cores (AFCs) and X-ray CT scanner to examine the physical mechanisms of bypassing in hydraulically fractured reservoirs (HFR) and naturally fractured reservoirs (NFR) that eventually result in more efficient CO{sub 2} flooding in heterogeneous or fracture-dominated reservoirs. In Chapter 1, we worked with DOE-RMOTC to investigate fracture properties in the Tensleep Formation at Teapot Dome Naval Reserve as part of their CO{sub 2} sequestration project. In Chapter 2, we continue our investigation to determine the primary oil recovery mechanism in a short vertically fractured core. Finally in Chapter 3, we report our numerical modeling efforts to develop compositional simulator with irregular grid blocks.

  17. Remote Laboratory Towards an integrated training system

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Remote Laboratory Towards an integrated training system Arnaud LELEVE, Hcene BENMOHAMED, Patrick.Meyer@ictt.ec-lyon.fr Abstract ­ Remote laboratories are essential to e-learning platforms in scientific and technical with the aim of giving means to instructors to build generic remote laboratory environments, homogeneously melt

  18. A Thermoelastic Hydraulic Fracture Design Tool for Geothermal Reservoir Development

    SciTech Connect (OSTI)

    Ahmad Ghassemi

    2003-06-30T23:59:59.000Z

    Geothermal energy is recovered by circulating water through heat exchange areas within a hot rock mass. Geothermal reservoir rock masses generally consist of igneous and metamorphic rocks that have low matrix permeability. Therefore, cracks and fractures play a significant role in extraction of geothermal energy by providing the major pathways for fluid flow and heat exchange. Thus, knowledge of conditions leading to formation of fractures and fracture networks is of paramount importance. Furthermore, in the absence of natural fractures or adequate connectivity, artificial fracture are created in the reservoir using hydraulic fracturing. At times, the practice aims to create a number of parallel fractures connecting a pair of wells. Multiple fractures are preferred because of the large size necessary when using only a single fracture. Although the basic idea is rather simple, hydraulic fracturing is a complex process involving interactions of high pressure fluid injections with a stressed hot rock mass, mechanical interaction of induced fractures with existing natural fractures, and the spatial and temporal variations of in-situ stress. As a result it is necessary to develop tools that can be used to study these interactions as an integral part of a comprehensive approach to geothermal reservoir development, particularly enhanced geothermal systems. In response to this need we have set out to develop advanced thermo-mechanical models for design of artificial fractures and rock fracture research in geothermal reservoirs. These models consider the significant hydraulic and thermo-mechanical processes and their interaction with the in-situ stress state. Wellbore failure and fracture initiation is studied using a model that fully couples poro-mechanical and thermo-mechanical effects. The fracture propagation model is based on a complex variable and regular displacement discontinuity formulations. In the complex variable approach the displacement discontinuities are defined from the numerical solution of a complex hypersingular integral equation written for a given fracture configuration and loading. The fracture propagation studies include modeling interaction of induced fractures with existing discontinuities such as faults and joints. In addition to the fracture propagation studies, two- and three-dimensional heat extraction solution algorithms have been developed and used to estimate heat extraction and the variations of the reservoir stress with cooling. The numerical models have been developed in a user-friendly environment to create a tool for improving fracture design and investigating single or multiple fracture propagation in rock.

  19. Interaction between Injection Points during Hydraulic Fracturing

    E-Print Network [OSTI]

    Hals, Kjetil M D

    2012-01-01T23:59:59.000Z

    We present a model of the hydraulic fracturing of heterogeneous poroelastic media. The formalism is an effective continuum model that captures the coupled dynamics of the fluid pressure and the fractured rock matrix and models both the tensile and shear failure of the rock. As an application of the formalism, we study the geomechanical stress interaction between two injection points during hydraulic fracturing (hydrofracking) and how this interaction influences the fracturing process. For injection points that are separated by less than a critical correlation length, we find that the fracturing process around each point is strongly correlated with the position of the neighboring point. The magnitude of the correlation length depends on the degree of heterogeneity of the rock and is on the order of 30-45 m for rocks with low permeabilities. In the strongly correlated regime, we predict a novel effective fracture-force that attracts the fractures toward the neighboring injection point.

  20. Hydraulic/Shock-Jumps in Protoplanetary Disks

    E-Print Network [OSTI]

    A. C. Boley; R. H. Durisen

    2006-03-10T23:59:59.000Z

    In this paper, we describe the nonlinear outcome of spiral shocks in protoplanetary disks. Spiral shocks, for most protoplanetary disk conditions, create a loss of vertical force balance in the post-shock region and result in rapid expansion of the gas perpendicular to the disk midplane. This expansion has characteristics similar to hydraulic jumps, which occur in incompressible fluids. We present a theory to describe the behavior of these hybrids between shocks and hydraulic jumps (shock bores) and then compare the theory to three-dimensional hydrodynamics simulations. We discuss the fully three-dimensional shock structures that shock bores produce and discuss possible consequences for disk mixing, turbulence, and evolution of solids.

  1. A Model For Polygonal Hydraulic Jumps

    E-Print Network [OSTI]

    Martens, Erik A; Bohr, Tomas

    2011-01-01T23:59:59.000Z

    We propose a phenomenological model for the polygonal hydraulic jumps discovered by Ellegaard et al., based on the known flow structure for the type II hydraulic jumps with a "roller" (separation eddy) near the free surface in the jump region. The model consists of mass conservation and radial force balance between hydrostatic pressure and viscous stresses on the roller surface. In addition, we consider the azimuthal force balance, primarily between pressure and viscosity, but also including non-hydrostatic pressure contributions from surface tension in light of recent observations by Bush et al. The model can be analyzed by linearization around the circular state, resulting in a parameter relationship for nearly circular polygonal states. A truncated, but fully nonlinear version of the model can be solved analytically. This simpler model gives rise to polygonal shapes that are very similar to those observed in experiments, even though surface tension is neglected, and the condition for the existence of a pol...

  2. Hydraulic fracturing slurry transport in horizontal pipes

    SciTech Connect (OSTI)

    Shah, S.N.; Lord, D.L. (Halliburton Services (US))

    1990-09-01T23:59:59.000Z

    Horizontal-well activity has increased throughout the industry in the past few years. To design a successful hydraulic fracturing treatment for horizontal wells, accurate information on the transport properties of slurry in horizontal pipe is required. Limited information exists that can be used to estimate critical deposition and resuspension velocities when proppants are transported in horizontal wells with non-Newtonian fracturing gels. This paper presents a study of transport properties of various hydraulic fracturing slurries in horizontal pipes. Flow data are gathered in three transparent horizontal pipes with different diameters. Linear and crosslinked fracturing gels were studied, and the effects of variables--e.g., pipe size; polymer-gelling-agent concentration; fluid rheological properties; crosslinking effects; proppant size, density, and concentrations; fluid density; and slurry pump rate--on critical deposition and resuspension velocities were investigated. Also, equations to estimate the critical deposition and resuspension velocities of fracturing gels are provided.

  3. Hydraulic system for a ratio change transmission

    DOE Patents [OSTI]

    Kalns, Ilmars (Northville, MI)

    1981-01-01T23:59:59.000Z

    Disclosed is a drive assembly (10) for an electrically powered vehicle (12). The assembly includes a transaxle (16) having a two-speed transmission (40) and a drive axle differential (46) disposed in a unitary housing assembly (38), an oil-cooled prime mover or electric motor (14) for driving the transmission input shaft (42), an adapter assembly (24) for supporting the prime mover on the transaxle housing assembly, and a hydraulic system (172) providing pressurized oil flow for cooling and lubricating the electric motor and transaxle and for operating a clutch (84) and a brake (86) in the transmission to shift between the two-speed ratios of the transmission. The adapter assembly allows the prime mover to be supported in several positions on the transaxle housing. The brake is spring-applied and locks the transmission in its low-speed ratio should the hydraulic system fail. The hydraulic system pump is driven by an electric motor (212) independent of the prime mover and transaxle.

  4. Sandia National Laboratories: Climate/Environment

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

    from improved climate models to performance models for underground waste storage to 3D printing and digital rock physics. Marianne Walck (Director ... NASA Award for Marginal...

  5. LABORATORY SAFETY Maintain a clean work environment

    E-Print Network [OSTI]

    Ford, James

    Inventory and label chemicals. Segregate incompatibles Keep flammables in flammable storage cabinets Do not block access to eyewashes, showers, or fire extinguishers Keep copies of Material Safety Data Sheets. See http://www.stanford.edu/dept/EHS/prod/MSDS/ Back up cultures and data off-site Investigate

  6. WORKPLACE INSPECTION CHECKLIST FOR LABORATORY ENVIRONMENTS

    E-Print Network [OSTI]

    Sinnamon, Gordon J.

    . There are easy access to electrical panels 6. Electrical equipment is plugged into permanent wiring outlets outlets are not available 8. Electrical equipment or power strips with frayed or damaged cord insulated parts are guarded (Sec. 8.5) 11. Vacuum equipment is provided with a filter or trap (Filter or trap

  7. Sandia National Laboratories: Geomechanics Laboratory

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

    including studies of coupled effects Extrapolation of laboratory measurements to field conditions In situ stress measurements and evaluation of in situ boundary conditions...

  8. Derivation of site-specific relationships between hydraulic parameters and p-wave velocities based on hydraulic and seismic tomography

    SciTech Connect (OSTI)

    Brauchler, R.; Doetsch, J.; Dietrich, P.; Sauter, M.

    2012-01-10T23:59:59.000Z

    In this study, hydraulic and seismic tomographic measurements were used to derive a site-specific relationship between the geophysical parameter p-wave velocity and the hydraulic parameters, diffusivity and specific storage. Our field study includes diffusivity tomograms derived from hydraulic travel time tomography, specific storage tomograms, derived from hydraulic attenuation tomography, and p-wave velocity tomograms, derived from seismic tomography. The tomographic inversion was performed in all three cases with the SIRT (Simultaneous Iterative Reconstruction Technique) algorithm, using a ray tracing technique with curved trajectories. The experimental set-up was designed such that the p-wave velocity tomogram overlaps the hydraulic tomograms by half. The experiments were performed at a wellcharacterized sand and gravel aquifer, located in the Leine River valley near Göttingen, Germany. Access to the shallow subsurface was provided by direct-push technology. The high spatial resolution of hydraulic and seismic tomography was exploited to derive representative site-specific relationships between the hydraulic and geophysical parameters, based on the area where geophysical and hydraulic tests were performed. The transformation of the p-wave velocities into hydraulic properties was undertaken using a k-means cluster analysis. Results demonstrate that the combination of hydraulic and geophysical tomographic data is a promising approach to improve hydrogeophysical site characterization.

  9. Downstream hydraulic geometry relations: 2. Calibration and testing

    E-Print Network [OSTI]

    Singh, Vijay P.; Yang, Chih Ted; Deng, Zhi-Qiang

    2003-12-04T23:59:59.000Z

    Downstream hydraulic geometry relations: 2. Calibration and testing Vijay P. Singh Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, Louisiana, USA Chih Ted Yang 1 Department of Civil Engineering, Colorado...; KEYWORDS: dynamic equilibrium, hydraulic geometry, maximum entropy, minimum energy dissipation, regime equations, stream power Citation: Singh, V. P., C. T. Yang, and Z.-Q. Deng, Downstream hydraulic geometry relations: 2. Calibration and testing, Water...

  10. Integrated Thermal and Hydraulic Analysis of Distillation Columns

    E-Print Network [OSTI]

    Samant, K.; Sinclair, I.; Keady, G.

    . The paper outlines how bringing together the column thermal and hydraulics analysis provides significant additional insights to help screen the options for distillation column revamps....

  11. Hydraulically refueled battery employing a packed bed metal particle electrode

    DOE Patents [OSTI]

    Siu, S.C.; Evans, J.W.

    1998-12-15T23:59:59.000Z

    A secondary zinc air cell, or another selected metal air cell, employing a spouted/packed metal particle bed and an air electrode is described. More specifically, two embodiments of a cell, one that is capable of being hydraulically recharged, and a second that is capable of being either hydraulically or electrically recharged. Additionally, each cell includes a sloped bottom portion to cause stirring of the electrolyte/metal particulate slurry when the cell is being hydraulically emptied and refilled during hydraulically recharging of the cell. 15 figs.

  12. MICRO-SEISMICITY, FAULT STRUCTURE AND HYDRAULIC COMPARTMENTALIZATION...

    Open Energy Info (EERE)

    GETHERMAL FIELD, CALIFORNIA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: MICRO-SEISMICITY, FAULT STRUCTURE AND HYDRAULIC...

  13. Hydraulic "Fracking": Are Surface Water Impacts An Ecological Concern?

    E-Print Network [OSTI]

    Hydraulic "Fracking": Are Surface Water Impacts An Ecological Concern? G. Allen Burton Jr; Fracking; Water-quality stressor; Ecological risk assessment Introduction The world's energy marketplace

  14. ROC/RMOTC Hydraulic Pump Test Final Report

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

    never attained. 6. The pump was hydraulically deployed and retrieved successfully. 7. Corrosion andor erosion of the pump rod were found when the pump was inspected following...

  15. Hydraulic properties of adsorbed water films in unsaturated porous media

    SciTech Connect (OSTI)

    Tokunaga, Tetsu K.

    2009-03-01T23:59:59.000Z

    Adsorbed water films strongly influence residual water saturations and hydraulic conductivities in porous media at low saturations. Hydraulic properties of adsorbed water films in unsaturated porous media were investigated through combining Langmuir's film model with scaling analysis, without use of any adjustable parameters. Diffuse double layer influences are predicted to be important through the strong dependence of adsorbed water film thickness (f) on matric potential ({Psi}) and ion charge (z). Film thickness, film velocity, and unsaturated hydraulic conductivity are predicted to vary with z{sup -1}, z{sup -2}, and z{sup -3}, respectively. In monodisperse granular media, the characteristic grain size ({lambda}) controls film hydraulics through {lambda}{sup -1} scaling of (1) the perimeter length per unit cross sectional area over which films occur, (2) the critical matric potential ({Psi}{sub c}) below which films control flow, and (3) the magnitude of the unsaturated hydraulic conductivity when {Psi} < {Psi}{sub c}. While it is recognized that finer textured sediments have higher unsaturated hydraulic conductivities than coarser sands at intermediate {Psi}, the {lambda}{sup -1} scaling of hydraulic conductivity predicted here extends this understanding to very low saturations where all pores are drained. Extremely low unsaturated hydraulic conductivities are predicted under adsorbed film-controlled conditions (generally < 0.1 mm y{sup -1}). On flat surfaces, the film hydraulic diffusivity is shown to be constant (invariant with respect to {Psi}).

  16. Compact, electro-hydraulic, variable valve actuation system providing...

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

    Compact, electro-hydraulic, variable valve actuation system providing variable lift, timing and duration to enable high efficiency engine combustion control Compact,...

  17. 1112323-danimer-abstract-hydraulic-fractures | netl.doe.gov

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

    Oil Recovery Deepwater Tech Methane Hydrate Field Demo of Eco-Friendly Propped Hydraulic Fractures 11123-23 Primary Performer DaniMer Scientific, LLC (Bainbridge, GA)...

  18. adopted hydraulic retention: Topics by E-print Network

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

    Concern? Geosciences Websites Summary: Hydraulic "Fracking": Are Surface Water Impacts An Ecological Concern? G. Allen Burton Jr shale formations. Millions of liters of...

  19. advanced hydraulic studies: Topics by E-print Network

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

    Concern? Geosciences Websites Summary: Hydraulic "Fracking": Are Surface Water Impacts An Ecological Concern? G. Allen Burton Jr shale formations. Millions of liters of...

  20. assembly thermo hydraulic: Topics by E-print Network

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

    Concern? Geosciences Websites Summary: Hydraulic "Fracking": Are Surface Water Impacts An Ecological Concern? G. Allen Burton Jr shale formations. Millions of liters of...

  1. advanced thermal hydraulic: Topics by E-print Network

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

    Concern? Geosciences Websites Summary: Hydraulic "Fracking": Are Surface Water Impacts An Ecological Concern? G. Allen Burton Jr shale formations. Millions of liters of...

  2. Finite element modeling of hydraulic fracturing in 3D

    E-Print Network [OSTI]

    2013-03-22T23:59:59.000Z

    Mar 22, 2013 ... Gautier. A.. Touzelet. S.: Tracer testing of the geothermal heat ex- ... R.: A field demonstra- tion of hydraulic fracturing for solid waste diposal—.

  3. Hydraulically refueled battery employing a packed bed metal particle electrode

    DOE Patents [OSTI]

    Siu, Stanley C. (Castro Valley, CA); Evans, James W. (Piedmont, CA)

    1998-01-01T23:59:59.000Z

    A secondary zinc air cell, or another selected metal air cell, employing a spouted/packed metal particle bed and an air electrode. More specifically, two embodiments of a cell, one that is capable of being hydraulically recharged, and a second that is capable of being either hydraulically or electrically recharged. Additionally, each cell includes a sloped bottom portion to cause stirring of the electrolyte/metal particulate slurry when the cell is being hydraulically emptied and refilled during hydraulically recharging of the cell.

  4. Idaho National Laboratory Vadose Zone Research Park Geohydrological Monitoring Results

    SciTech Connect (OSTI)

    Kristine Baker

    2006-01-01T23:59:59.000Z

    Vadose zone lithology, hydrological characterization of interbed sediments, and hydrological data from subsurface monitoring of Idaho Nuclear Technology and Engineering Center wastewater infiltration are presented. Three-dimensional subsurface lithology of the vadose zone beneath the Vadose Zone Research Park is represented in a 2 dimensional (2 D) diagram showing interpolated lithology between monitoring wells. Laboratory-measured values for saturated hydraulic conductivity and porosity are given for three major interbeds, denoted as the B BC interbed (20 to 35 m bls), the C D interbed (40 to 45 m bls), and the DE 1 2 interbed (55 to 65 m bls), along with an overall physical description of the sediments and geologic depositional environments. Pre-operational pore water pressure conditions are presented to show the presence and location of perched water zones before pond discharge at the New Percolation Ponds. Subsurface infiltration conditions during initial high-volume discharge are presented to show water arrival times and arrival sequences. Steady-state conditions are then presented to show formation and locations of perched water zones and recharge sources after several months of discharge to the New Percolation Ponds.

  5. Tribology Laboratory | Argonne National Laboratory

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

    systems (surface engineered materials, lubricants, fuels, and fuellubricant additives) for use in aggressive environments (for example, where two surfaces are rubbing...

  6. Lead Coolant Test Facility Systems Design, Thermal Hydraulic Analysis and Cost Estimate

    SciTech Connect (OSTI)

    Soli Khericha; Edwin Harvego; John Svoboda; Ryan Dalling

    2012-01-01T23:59:59.000Z

    The Idaho National Laboratory prepared a preliminary technical and functional requirements (T&FR), thermal hydraulic design and cost estimate for a lead coolant test facility. The purpose of this small scale facility is to simulate lead coolant fast reactor (LFR) coolant flow in an open lattice geometry core using seven electrical rods and liquid lead or lead-bismuth eutectic coolant. Based on review of current world lead or lead-bismuth test facilities and research needs listed in the Generation IV Roadmap, five broad areas of requirements were identified as listed: (1) Develop and Demonstrate Feasibility of Submerged Heat Exchanger; (2) Develop and Demonstrate Open-lattice Flow in Electrically Heated Core; (3) Develop and Demonstrate Chemistry Control; (4) Demonstrate Safe Operation; and (5) Provision for Future Testing. This paper discusses the preliminary design of systems, thermal hydraulic analysis, and simplified cost estimate. The facility thermal hydraulic design is based on the maximum simulated core power using seven electrical heater rods of 420 kW; average linear heat generation rate of 300 W/cm. The core inlet temperature for liquid lead or Pb/Bi eutectic is 4200 C. The design includes approximately seventy-five data measurements such as pressure, temperature, and flow rates. The preliminary estimated cost of construction of the facility is $3.7M (in 2006 $). It is also estimated that the facility will require two years to be constructed and ready for operation.

  7. Replacement of petroleum based hydraulic fluids with a soybean-based alternative

    SciTech Connect (OSTI)

    Rose, B.; Rivera, P.

    1998-05-01T23:59:59.000Z

    Despite the best preventative measures, ruptured hoses, spills and leaks occur with use of all hydraulic equipment. Although these releases do not usually produce a RCRA regulated waste, they are often a reportable occurrence. Clean-up and subsequent administrative procedure involves additional costs, labor and work delays. Concerns over these releases, especially related to Sandia National Laboratories (SNL) vehicles hauling waste on public roads prompted Fleet Services (FS) to seek an alternative to the standard petroleum based hydraulic fluid. Since 1996 SNL has participated in a pilot program with the University of Iowa (UNI) and selected vehicle manufacturers, notably John Deere, to field test hydraulic fluid produced from soybean oil in twenty of its vehicles. The vehicles included loaders, graders, sweepers, forklifts and garbage trucks. Research was conducted for several years at UNI to modify and market soybean oils for industrial uses. Soybean oil ranks first in worldwide production of vegetable oils (29%), and represents a tremendous renewable resource. Initial tests with soybean oil showed excellent lubrication and wear protection properties. Lack of oxidative stability and polymerization of the oil were concerns. These concerns were being addressed through genetic alteration, chemical modification and use of various additives, and the improved lubricant is in the field testing stage.

  8. Downstream hydraulic geometry relations: 1. Theoretical development

    E-Print Network [OSTI]

    Singh, Vijay P.; Yang, Chih Ted; Deng, Z. Q.

    2003-12-04T23:59:59.000Z

    . Thus USP, denoted as P w , is expressed as P w ? VS ?3a? where V is the average flow velocity, and S is the energy slope. Stream power (SP) is the rate of energy dissipation due to water: SP ? QgS ?3b? where g is the weight density of water and Q... of flow and B as the width of flow, then the flow cross-sectional area A= Bh, the wetted perimeter P= B + 2h, and the hydraulic radius R = A/P = (Bh)/(B + 2h). If the channel is wide rectangular, then R ? h = depth of flow. The flow discharge in equation...

  9. Hydraulic Hybrid Systems | 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 are8COaBulkTransmissionSitingProcess.pdfGetecGtel JumpCounty, Texas: EnergyHy9 CorporationHydra Fuel CellHydraulic

  10. The Hydraulic Institute: Who We Are

    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 33Frequently AskedEnergyIssuesEnergy Solar Decathlon2001 PowerofUseResearchHydraulic Institute:

  11. Thermal Hydraulic Simulations, Error Estimation and Parameter

    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'sis Taking Over OurThe Iron Spin Transition in theTheoretical Study onThermal Hydraulic Simulations,

  12. Hydraulic Fracturing | OpenEI Community

    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 being directedAnnual SiteofEvaluatingGroup | OpenHunan Runhua New Energy Development CoHustisfordHydraulic

  13. Environments Journal of Arid Environments 69 (2007) 633657

    E-Print Network [OSTI]

    Ahmad, Sajjad

    2007-01-01T23:59:59.000Z

    ; Bioturbation; Ecohydrology; Hydraulic conductivity; Mojave Desert ARTICLE IN PRESS www hydraulic properties. Separate measurements were made in shrub undercanopy and intercanopy microsites horizons in intercanopy soils in which saturated hydraulic conductivity (Ksat) decreased 95 percent from

  14. Hydraulic conductivity estimation from induced polarisation data at the field scale --the Krauthausen case history

    E-Print Network [OSTI]

    Sailhac, Pascal

    Hydraulic conductivity estimation from induced polarisation data at the field scale Abstract Recently, encouraging results have been obtained to estimate hydraulic conductivity in order to establish semi-empirical relationships between complex electrical conductivity and hydraulic

  15. Passivity Based Adaptive Control of a Two Chamber Single Rod Hydraulic Actuator

    E-Print Network [OSTI]

    Li, Perry Y.

    Passivity Based Adaptive Control of a Two Chamber Single Rod Hydraulic Actuator Meng Wang and Perry based backstepping controller using a physical compressibility energy function for a chamber hydraulic produces an accurate trajectory tracking performance. I. INTRODUCTION Electronically controlled hydraulic

  16. Development of a Hydraulic Manipulator Servoactuator Model: Simulation and Experimental Validation

    E-Print Network [OSTI]

    Papadopoulos, Evangelos

    Development of a Hydraulic Manipulator Servoactuator Model: Simulation and Experimental Validation Abstract In this paper, modelling and identification of a hydraulic servoactuator system is presented, leakage, and load dynamics. System parameters are identified based on a high-performance hydraulic

  17. Hydraulic limitation not declining nitrogen availability causes the age-related photosynthetic decline in loblolly

    E-Print Network [OSTI]

    DeLucia, Evan H.

    Hydraulic limitation not declining nitrogen availability causes the age-related photosynthetic capacity and thus decreases GPP with increasing age; and (2) hydraulic limitations increasingly induce conservative with age. We conclude that hydraulic limitation increasingly limits the photosyn- thetic rates

  18. Experimental Study of Ventilation Performance in Laboratories with Chemical Spills

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    1 Experimental Study of Ventilation Performance in Laboratories with Chemical Spills Mingang Chemical spills occur frequently in laboratories. The current ventilation code for laboratories recommends a ventilation rate of 12 ACH for maintaining a safe laboratory environment. On the other hand, the energy saving

  19. Hydraulic Fractures: multiscale phenomena, asymptotic and numerical solutions

    E-Print Network [OSTI]

    Peirce, Anthony

    Hydraulic Fractures: multiscale phenomena, asymptotic and numerical solutions SANUM Conference (UMN) Eduard Siebrits (SLB) #12;2 Outline · Examples of hydraulic fractures · Governing equations well stimulation Fracturing Fluid Proppant #12;5 Quarries #12;6 Magma flow Tarkastad #12;7 Model EQ 1

  20. Hydraulic Fractures: multiscale phenomena, asymptotic and numerical solutions

    E-Print Network [OSTI]

    Peirce, Anthony

    Hydraulic Fractures: multiscale phenomena, asymptotic and numerical solutions CSIRO CSS TCP Detournay (UMN) Eduard Siebrits (SLB) #12;2 Outline · Examples of hydraulic fractures · Governing equations well stimulation Fracturing Fluid Proppant #12;5 Quarries #12;6 Magma flow Tarkastad #12;7 Model EQ 1

  1. Creation and Impairment of Hydraulic Fracture Conductivity in Shale Formations 

    E-Print Network [OSTI]

    Zhang, Junjing

    2014-07-10T23:59:59.000Z

    Multi-stage hydraulic fracturing is the key to the success of many shale gas and shale oil reservoirs. The main objectives of hydraulic fracturing in shale are to create artificial fracture networks that are conductive for oil and gas flow...

  2. The Performance and Environmental Effects of a Hydraulic Clam Dredge

    E-Print Network [OSTI]

    The Performance and Environmental Effects of a Hydraulic Clam Dredge THOMAS L MEYER, RICHARD A to Nantucket, Mass. Hydraulic clam dredges with 0.76 m and 1.2 m (30 and 48 inch) wide blades were used during these surveys (Serchuk et aI., 1979). The efficiency of these dredges and the general effect of dredging

  3. Sustained Storage and Transport of Hydraulic Gold Mining Sediment

    E-Print Network [OSTI]

    James, L. Allan

    Sustained Storage and Transport of Hydraulic Gold Mining Sediment in the Bear River, California L primarily in the Yuba Basin. Sus- tained storage and transport of hydraulic min- ing sediment in the Bear- ume is more than double previous estimates of storage in the lower basin, and is greater than any

  4. IOWA INSTITUTE OF HYDRAULIC RESEARCH COLLEGE OF ENGINEERING

    E-Print Network [OSTI]

    Stanier, Charlie

    * Hydraulic Model Study of Circulating Water Pump Structure for Marmara Erglisi Power Plant BVI Ettema Simulations with NEXRAD Data Army/UCONN Krajewski, Kruger Simulation of the Passage of a Blade Through ASCE Holly * ** Hydraulic Model Tests of the St. Louis County Water Company Meramec Plant Intakes No. 1

  5. Optimal Power Management for a Hydraulic Hybrid Delivery Truck

    E-Print Network [OSTI]

    Peng, Huei

    Optimal Power Management for a Hydraulic Hybrid Delivery Truck BIN WU, CHAN-CHIAO LIN, ZORAN FILIPI control strategies. This paper presents a methodology for developing a power management strategy tailored specifically to a parallel Hydraulic Hybrid Vehicle (HHV) configured for a medium-size delivery truck

  6. P and PI controllers for a nonlinear hydraulic network

    E-Print Network [OSTI]

    De Persis, Claudio

    constraints) arising in industrial applications. Current case study: Grundfos district heating system #12;P" district heating system #12;P and PI controllers for a nonlinear hydraulic network Sept. 20, 2007 Page 4 Results #12;P and PI controllers for a nonlinear hydraulic network Sept. 20, 2007 Page 5 District Heating

  7. Systematic Variability of Soil Hydraulic Conductivity Across Three Vertisol Catenas

    E-Print Network [OSTI]

    Rivera, Leonardo Daniel

    2011-10-21T23:59:59.000Z

    .......................................................... 16 Saturated Hydraulic Conductivity Measurements .......................... 19 Soil Sampling and Analysis ............................................................ 22 ROSETTA Modeling... properties. Manure application improved aggregation, decreased bulk density, and increased the hydraulic conductivity of the soil. Conventional tillage treatments had the highest bulk densities and lowest infiltration rates. Effects of Landscape Position...

  8. Creation and Impairment of Hydraulic Fracture Conductivity in Shale Formations

    E-Print Network [OSTI]

    Zhang, Junjing

    2014-07-10T23:59:59.000Z

    Multi-stage hydraulic fracturing is the key to the success of many shale gas and shale oil reservoirs. The main objectives of hydraulic fracturing in shale are to create artificial fracture networks that are conductive for oil and gas flow...

  9. Applicability of 10 CFR 851 to Savannah River Ecology Laboratory

    Broader source: Energy.gov [DOE]

    Letter from Bruce Diamond, Assistant General Counsel for Environment, DOE, dated November 24, 2007 to Mr. Bertsch, Director and Professor, Savannah River Ecology Laboratory, regarding Savannah Riber Ecology Laboratory's Request for Interpretive Ruling under 10 CFR 851.

  10. Using electrical impedance tomography to map subsurface hydraulic conductivity

    DOE Patents [OSTI]

    Berryman, James G. (Danville, CA); Daily, William D. (Livermore, CA); Ramirez, Abelardo L. (Pleasanton, CA); Roberts, Jeffery J. (Livermore, CA)

    2000-01-01T23:59:59.000Z

    The use of Electrical Impedance Tomography (EIT) to map subsurface hydraulic conductivity. EIT can be used to map hydraulic conductivity in the subsurface where measurements of both amplitude and phase are made. Hydraulic conductivity depends on at least two parameters: porosity and a length scale parameter. Electrical Resistance Tomography (ERT) measures and maps electrical conductivity (which can be related to porosity) in three dimensions. By introducing phase measurements along with amplitude, the desired additional measurement of a pertinent length scale can be achieved. Hydraulic conductivity controls the ability to flush unwanted fluid contaminants from the surface. Thus inexpensive maps of hydraulic conductivity would improve planning strategies for subsequent remediation efforts. Fluid permeability is also of importance for oil field exploitation and thus detailed knowledge of fluid permeability distribution in three-dimension (3-D) would be a great boon to petroleum reservoir analysts.

  11. HYDRAULIC CONDUCTIVITY OF SALTSTONE FORMULATED USING 1Q11, 2Q11 AND 3Q11 TANK 50 SLURRY SAMPLES

    SciTech Connect (OSTI)

    Reigel, M.; Nichols, R.

    2012-06-27T23:59:59.000Z

    As part of the Saltstone formulation work requested by Waste Solidification Engineering (WSE), Savannah River National Laboratory (SRNL) was tasked with preparing Saltstone samples for fresh property analysis and hydraulic conductivity measurements using actual Tank 50 salt solution rather than simulated salt solution. Samples of low level waste salt solution collected from Tank 50H during the first, second, and third quarters of 2011 were used to formulate the Saltstone samples. The salt solution was mixed with premix (45 wt % slag, 45 wt % fly ash, and 10 wt % cement), in a ratio consistent with facility operating conditions during the quarter of interest. The fresh properties (gel, set, bleed) of each mix were evaluated and compared to the recommended acceptance criteria for the Saltstone Production Facility. ASTM D5084-03, Method C was used to measure the hydraulic conductivity of the Saltstone samples. The hydraulic conductivity of Saltstone samples prepared from 1Q11 and 2Q11 samples of Tank 50H is 4.2E-9 cm/sec and 2.6E-9 cm/sec, respectively. Two additional 2Q11 and one 3Q11 sample were not successfully tested due to the inability to achieve stable readings during saturation and testing. The hydraulic conductivity of the samples made from Tank 50H salt solution compare well to samples prepared with simulated salt solution and cured under similar conditions (1.4E-9 - 4.9E-8 cm/sec).

  12. Resolving discrepancies between hydraulic and chemical calibration data for seawater intrusion groundwater flow models by considering climate-driven sea level change.

    SciTech Connect (OSTI)

    J. Chapman; A. Hassan; K. Pohlmann

    2001-10-18T23:59:59.000Z

    Groundwater models of seawater intrusion environments can be calibrated using both hydraulic and chemical information. The possible impact of the long-term transient process of sea level change is difficult to identify, but important to accurate simulation of present conditions. The response times of the pressure and chemical fields to major fluctuations in sea level change are investigated

  13. Design, modeling, fabrication and testing of a piezoelectric microvalve for high pressure, high frequency hydraulic applications

    E-Print Network [OSTI]

    Roberts, David C. (David Christopher)

    2002-01-01T23:59:59.000Z

    A piezoelectrically-driven hydraulic amplification microvalve for use in high specific power hydraulic pumping applications was designed, fabricated, and experimentally characterized. High frequency, high force actuation ...

  14. Method for valve seating control for an electro-hydraulic engine valve

    DOE Patents [OSTI]

    Sun, Zongxuan (Plymouth, MN)

    2011-01-11T23:59:59.000Z

    Valve lift in an internal combustion engine is controlled by an electro-hydraulic actuation mechanism including a selectively actuable hydraulic feedback circuit.

  15. SULI at Ames Laboratory

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    A video snapshot of the Science Undergraduate Laboratory Internship (SULI) program at Ames Laboratory.

  16. Autonomie R14 now available | Argonne National Laboratory

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

    EmailPrint Autonomie is Argonne National Laboratory's Plug-and-Play System Model Architecture and Development Environment to support the rapid evaluation of new vehicle system...

  17. Records Management Plan Lawrence Berkeley National Laboratory

    E-Print Network [OSTI]

    Records Management Plan Page 1 Lawrence Berkeley National Laboratory Environment, Health and Safety Division Environmental Services Group Environmental Restoration Program Records Management Plan May 2007 #12;#12;Records Management Plan Page 3 TABLE OF CONTENTS 1 INTRODUCTION

  18. Powertrain System HANT: Hydraulic Pump/Motor

    SciTech Connect (OSTI)

    Not Available

    1993-06-01T23:59:59.000Z

    The development of the new Hydraulic Pump/Motor is the main part of the Powertrain-System HANT. Several Engineering Models of the same design have been tested to prove that the new concept is effective. The important ranges: Maximum pressure and rpm and low power (low pressure, rpm, swashplate angle) were tested successfully. The efficiencies in all areas have already shown the same or better data then those of the best products on the market. The tests have been conducted in Switzerland (maximum power) in 1987 and at the UWM-Madison, Wisconsin (low power efficiency) in 1988. Based on these data and several new useful design features the Engineering Model has been updated. In addition, the reduction of unnecessary safety factor, new materials and mass-production like manufacturing methods, has lead to an significantly improved Prototype Design. The updated version and its expected improved technical data are presented in this report.

  19. Neutron Imaging Reveals Internal Plant Hydraulic Dynamics

    SciTech Connect (OSTI)

    Warren, Jeffrey [ORNL; Bilheux, Hassina Z [ORNL; Kang, Misun [ORNL; Voisin, Sophie [ORNL; Cheng, Chu-Lin [ORNL; Horita, Jusuke [ORNL; Perfect, Edmund [ORNL

    2013-01-01T23:59:59.000Z

    Many terrestrial ecosystem processes are constrained by water availability and transport within the soil. Knowledge of plant water fluxes is thus critical for assessing mechanistic processes linked to biogeochemical cycles, yet resolution of root structure and xylem water transport dynamics has been a particularly daunting task for the ecologist. Through neutron imaging, we demonstrate the ability to non-invasively monitor individual root functionality and water fluxes within Zea mays L. (maize) and Panicum virgatum L. (switchgrass) seedlings growing in a sandy medium. Root structure and growth were readily imaged by neutron radiography and neutron computed tomography. Seedlings were irrigated with water or deuterium oxide and imaged through time as a growth lamp was cycled on to alter leaf demand for water. Sub-millimeter scale resolution reveals timing and magnitudes of root water uptake, redistribution within the roots, and root-shoot hydraulic linkages, relationships not well characterized by other techniques.

  20. Peace Corps / Environment Environment Volunteers

    E-Print Network [OSTI]

    Kaminsky, Werner

    Peace Corps / Environment Environment Volunteers Environmental damage can have enormous choices about how to best protect and preserve the local environment. Programs and Sample Projects and communications technology, agriculture, and environment. We are looking for applicants with a variety of skills

  1. Design of a hydraulic bulge test apparatus

    E-Print Network [OSTI]

    Koh, Cheok Wei

    2008-01-01T23:59:59.000Z

    The various equi-biaxial tension tests for sheet metal were studied and compared to determine the most appropriate equipping in the Impact and Crashworthiness Laboratory, MIT, for the testing of Advanced High Strength ...

  2. Relationship between Anisotropy in Soil Hydraulic Conductivity and Saturation

    SciTech Connect (OSTI)

    Zhang, Z. Fred

    2014-01-01T23:59:59.000Z

    Anisotropy in unsaturated hydraulic conductivity is saturation-dependent. Accurate characterization of soil anisotropy is very important in simulating flow and contaminant (e.g., radioactive nuclides in Hanford) transport. A recently developed tensorial connectivity-tortuosity (TCT) concept describes the hydraulic conductivity tensor of the unsaturated anisotropic soils as the product of a scalar variable, the symmetric connectivity tortuosity tensor, and the hydraulic conductivity tensor at saturation. In this study, the TCT model is used to quantify soil anisotropy in unsaturated hydraulic conductivity. The TCT model can describe different types of soil anisotropy; e.g., the anisotropy coefficient, C, can be monotonically increase or decrease with saturation and can vary from greater than unity to less than unity and vice versa. Soil anisotropy is independent of soil water retention properties and can be characterized by the ratio of the saturated hydraulic conductivities and the difference of the tortuosity-connectivity coefficients in two directions. ln(C) is linearly proportional to ln(Se) with Se being the effective saturation. The log-linear relationship between C and Se allows the saturation-dependent anisotropy to be determined using linear regression with the measurements of the directional hydraulic conductivities at a minimum of two water content levels, of which one may be at full saturation. The model was tested using measurements of directional hydraulic conductivities.

  3. Brookhaven National Laboratory site environmental report for calendar year 1996

    SciTech Connect (OSTI)

    Schroeder, G.L.; Paquette, D.E.; Naidu, J.R.; Lee, R.J.; Briggs, S.L.K.

    1998-01-01T23:59:59.000Z

    This report documents the results of the Environmental Monitoring Program at Brookhaven National Laboratory and summarizes information about environmental compliance for 1996. To evaluate the effect of Brookhaven National Laboratory`s operations on the local environment, measurements of direct radiation, and of a variety of radionuclides and chemical compounds in the ambient air, soil, sewage effluent, surface water, groundwater, fauna, and vegetation were made at the Brookhaven National Laboratory site and at adjacent sites. The report also evaluates the Laboratory`s compliance with all applicable guides, standards, and limits for radiological and non-radiological emissions and effluents to the environment.

  4. Hydraulic Hybrid Parcel Delivery Truck Deployment, Testing & Demonstration

    SciTech Connect (OSTI)

    Gallo, Jean-Baptiste

    2014-03-31T23:59:59.000Z

    Although hydraulic hybrid systems have shown promise over the last few years, commercial deployment of these systems has primarily been limited to Class 8 refuse trucks. In 2005, the Hybrid Truck Users Forum initiated the Parcel Delivery Working Group including the largest parcel delivery fleets in North America. The goal of the working group was to evaluate and accelerate commercialization of hydraulic hybrid technology for parcel delivery vehicles. FedEx Ground, Purolator and United Parcel Service (UPS) took delivery of the world’s first commercially available hydraulic hybrid parcel delivery trucks in early 2012. The vehicle chassis includes a Parker Hannifin hydraulic hybrid drive system, integrated and assembled by Freightliner Custom Chassis Corp., with a body installed by Morgan Olson. With funding from the U.S. Department of Energy, CALSTART and its project partners assessed the performance, reliability, maintainability and fleet acceptance of three pre-production Class 6 hydraulic hybrid parcel delivery vehicles using information and data from in-use data collection and on-road testing. This document reports on the deployment of these vehicles operated by FedEx Ground, Purolator and UPS. The results presented provide a comprehensive overview of the performance of commercial hydraulic hybrid vehicles in parcel delivery applications. This project also informs fleets and manufacturers on the overall performance of hydraulic hybrid vehicles, provides insights on how the technology can be both improved and more effectively used. The key findings and recommendations of this project fall into four major categories: ? Performance, ? Fleet deployment, ? Maintenance, ? Business case. Hydraulic hybrid technology is relatively new to the market, as commercial vehicles have been introduced only in the past few years in refuse and parcel delivery applications. Successful demonstration could pave the way for additional purchases of hydraulic hybrid vehicles throughout the trucking industry. By providing unbiased, third-party assessment of this “hybrid without batteries” technology, this report offers relevant, timely and valuable information to the industry.

  5. ANL-13/02 Argonne National Laboratory

    E-Print Network [OSTI]

    Kemner, Ken

    #12;#12;ANL-13/02 Argonne National Laboratory Site Environmental Report for Calendar Year 2012 Assurance Division Argonne National Laboratory September 2013 #12;#12;A NOTE FROM THE AUTHORS Argonne Site (SER) was prepared by the Environment, Safety, and Quality Assurance (ESQ) Division at Argonne National

  6. Thermal Hydraulics of the Very High Temperature Gas Cooled Reactor

    SciTech Connect (OSTI)

    Chang Oh; Eung Kim; Richard Schultz; Mike Patterson; Davie Petti

    2009-10-01T23:59:59.000Z

    The U.S Department of Energy (DOE) is conducting research on the Very High Temperature Reactor (VHTR) design concept for the Next Generation Nuclear Plant (NGNP) Project. The reactor design will be a graphite moderated, thermal neutron spectrum reactor that will produce electricity and hydrogen in a highly efficient manner. The NGNP reactor core will be either a prismatic graphite block type core or a pebble bed core. The NGNP will use very high-burnup, low-enriched uranium, TRISO-coated fuel, and have a projected plant design service life of 60 years. The VHTR concept is considered to be the nearest-term reactor design that has the capability to efficiently produce hydrogen. The plant size, reactor thermal power, and core configuration will ensure passive decay heat removal without fuel damage or radioactive material releases during reactor core-accidents. The objectives of the NGNP Project are to: Demonstrate a full-scale prototype VHTR that is commercially licensed by the U.S. Nuclear Regulatory Commission, and Demonstrate safe and economical nuclear-assisted production of hydrogen and electricity. The DOE laboratories, led by the INL, perform research and development (R&D) that will be critical to the success of the NGNP, primarily in the areas of: • High temperature gas reactor fuels behavior • High temperature materials qualification • Design methods development and validation • Hydrogen production technologies • Energy conversion. This paper presents current R&D work that addresses fundamental thermal hydraulics issues that are relevant to a variety of possible NGNP designs.

  7. Hydraulic Shuttle Irradiation System (HSIS) Recently Installed in the Advanced Test Reactor (ATR)

    SciTech Connect (OSTI)

    A. Joseph Palmer; Gerry L. McCormick; Shannon J. Corrigan

    2010-06-01T23:59:59.000Z

    2010 International Congress on Advances in Nuclear Power Plants (ICAPP’10) ANS Annual Meeting Imbedded Topical San Diego, CA June 13 – 17, 2010 Hydraulic Shuttle Irradiation System (HSIS) Recently Installed in the Advanced Test Reactor (ATR) Author: A. Joseph Palmer, Mechanical Engineer, Irradiation Test Programs, 208-526-8700, Joe.Palmer@INL.gov Affiliation: Idaho National Laboratory P.O. Box 1625, MS-3840 Idaho Falls, ID 83415 INL/CON-10-17680 ABSTRACT Most test reactors are equipped with shuttle facilities (sometimes called rabbit tubes) whereby small capsules can be inserted into the reactor and retrieved during power operations. With the installation of Hydraulic Shuttle Irradiation System (HSIS) this capability has been restored to the Advanced Test Reactor (ATR) at Idaho National Laboratory (INL). The general design and operating principles of this system were patterned after the hydraulic rabbit at Oak Ridge National Laboratory’s (ORNL) High Flux Isotope Reactor (HFIR), which has operated successfully for many years. Using primary coolant as the motive medium the HSIS system is designed to simultaneously transport fourteen shuttle capsules, each 16 mm OD x 57 mm long, to and from the B-7 position of the reactor. The B-7 position is one of the higher flux positions in the reactor with typical thermal and fast (>1 Mev) fluxes of 2.8E+14 n/cm2/sec and 1.9E+14 n/cm2/sec respectively. The available space inside each shuttle is approximately 14 mm diameter x 50 mm long. The shuttle containers are made from titanium which was selected for its low neutron activation properties and durability. Shuttles can be irradiated for time periods ranging from a few minutes to several months. The Send and Receive Station (SRS) for the HSIS is located 2.5 m deep in the ATR canal which allows irradiated shuttles to be easily moved from the SRS to a wet loaded cask, or transport pig. The HSIS system first irradiated (empty) shuttles in September 2009 and has since completed a Readiness Assessment in November 2009. The HSIS is a key component of the ATR National Scientific User Facility (NSUF) operated by Battelle Energy Alliance, LLC and is available to a wide variety of university researchers for nuclear fuels and materials experiments as well as medical isotope research and production.

  8. KJRR-FAI Hydraulic Flow Testing Input Package

    SciTech Connect (OSTI)

    N.E. Woolstenhulme; R.B. Nielson; D.B. Chapman

    2013-12-01T23:59:59.000Z

    The INL, in cooperation with the KAERI via Cooperative Research And Development Agreement (CRADA), undertook an effort in the latter half of calendar year 2013 to produce a conceptual design for the KJRR-FAI campaign. The outcomes of this effort are documented in further detail elsewhere [5]. The KJRR-FAI was designed to be cooled by the ATR’s Primary Coolant System (PCS) with no provision for in-pile measurement or control of the hydraulic conditions in the irradiation assembly. The irradiation assembly was designed to achieve the target hydraulic conditions via engineered hydraulic losses in a throttling orifice at the outlet of the irradiation vehicle.

  9. Brookhaven National Laboratory site environmental report for calendar year 1994

    SciTech Connect (OSTI)

    Naidu, J.R.; Royce, B.A. [eds.

    1995-05-01T23:59:59.000Z

    This report documents the results of the Environmental Monitoring Program at Brookhaven National Laboratory and presents summary information about environmental compliance for 1994. To evaluate the effect of Brookhaven National Laboratory`s operations on the local environment, measurements of direct radiation, and a variety of radionuclides and chemical compounds in ambient air, soil, sewage effluent, surface water, groundwater, fauna and vegetation were made at the Brookhaven National Laboratory site and at sites adjacent to the Laboratory.

  10. An implicit level set method for modeling hydraulically driven fractures Anthony Peirce a,*, Emmanuel Detournay b

    E-Print Network [OSTI]

    Peirce, Anthony

    An implicit level set method for modeling hydraulically driven fractures Anthony Peirce a the relevant tip asymptotics in hydraulic fracture simulators is critical for the accuracy and stability for a propagating hydraulic fracture. A number of char- acteristics of the governing equations for hydraulic

  11. Hydraulic Effects of Changes in Bottom-Land Vegetation on Three

    E-Print Network [OSTI]

    Hydraulic Effects of Changes in Bottom-Land Vegetation on Three Major Floods, Gila RiverKelvey, Director Library of Congress Cataloging in Publication Data Burkham, D. E. 1927 Hydraulic effects 19.16:655-J 1. Gila River-Floods. 2. Hydraulics. 3. Botany-Ecology-Gila River. 1. Title: Hydraulic

  12. Effects of hydraulic roughness on surface textures of gravel-bed rivers

    E-Print Network [OSTI]

    Effects of hydraulic roughness on surface textures of gravel-bed rivers John M. Buffington1 that bed-surface grain size is responsive to hydraulic roughness caused by bank irregularities, bars condition of low hydraulic roughness. For a given 0bf , channels with progressively greater hydraulic

  13. F. Froux et al.Hydraulic properties of Mediterranean conifers Original article

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    F. Froux et al.Hydraulic properties of Mediterranean conifers Original article Xylem hydraulic (Received 5 November 2001; accepted 11 February 2002) Abstract ­ We studied the xylem hydraulic traits specific hydraulic conductivity was much higher in Cupressus sempervirens and P. nigra than in Cedrus

  14. Laboratory Applications

    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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PM toLED Lighting5-15TradeLaboratories

  15. Laboratory Directors

    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. DOE Office of Science (SC)Integrated Codes |Is Your Home asLCLSLaboratory Directors Laboratory Directors A

  16. Laboratory Operations

    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 PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,sand CERN 73-11 Laboratory I |

  17. Impact Of Standing Water On Saltstone Placement II - Hydraulic Conductivity Data

    SciTech Connect (OSTI)

    Cozzi, A. D.; Pickenheim, B. R.

    2012-12-06T23:59:59.000Z

    The amount of water present during placement and subsequent curing of saltstone has the potential to impact several properties important for grout quality. An active drain water system can remove residual standing water and expose the surface of the placed saltstone to air. Oxidation of the saltstone may result in an increase in the leachability of redox sensitive elements. A dry surface can lead to cracking, causing an increase in hydraulic conductivity. An inactive drain water system can allow standing water that generates unnecessary hydrostatic head on the vault walls. Standing water that cannot be removed via the drain system will be available for potential incorporation into subsequent grout placements. The objective of this work is to study the impact of standing water on grout quality pertaining to disposal units. A series of saltstone mixes was prepared and cured at ambient temperature to evaluate the impact of standing water on saltstone placement. The samples were managed to control drying effects on leachability by either exposing or capping the samples. The water to premix ratio was varied to represent a range of processing conditions. Samples were analyzed for density, leachability, and hydraulic conductivity. Report SRNL-STI-2012-00546 was issued detailing the experimental procedure, results, and conclusions related to density and leachability. In the previous report, it was concluded that: density tends to increase toward the bottom of the samples. This effect is pronounced with excess bleed water; drying of the saltstone during curing leads to decreased Leachability Index (more leaching) for potassium, sodium, rhenium, nitrite, and nitrate; there is no noticeable effect on saltstone oxidation/leachability by changing the water to premix ratio (over the range studied), or by pouring into standing water (when tested up to 10 volume percent). The hydraulic conductivity data presented in this report show that samples cured exposed to the atmosphere had about three orders of magnitude higher hydraulic conductivity than any of the other samples. Considering these data, along with the results presented in the previous report, leads to the conclusion that small changes in water to premix ratio and the inclusion of up to 10 volume percent standing water should not be expected to have a detrimental effect on saltstone grout quality. The hydraulic conductivity results further demonstrate that curing in a moist environment is critical to maintaining saltstone quality.

  18. Development of a Neutron Diffraction Based Experiemental Capability for Investigating Hydraulic Fracturing for EGS-like Conditions

    SciTech Connect (OSTI)

    Polsky, Yarom [ORNL] [ORNL; Anovitz, Lawrence {Larry} M [ORNL; An, Ke [ORNL] [ORNL; Carmichael, Justin R [ORNL] [ORNL; Bingham, Philip R [ORNL] [ORNL; Dessieux Jr, Luc Lucius [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    Hydraulic fracturing to enhance formation permeability is an established practice in the Oil & Gas (O&G) industry and is expected to be an enabler for EGS. However, it is rarely employed in conventional geothermal systems and there are significant questions regarding the translation of practice from O&G to both conventional geothermal and EGS applications. Lithological differences(sedimentary versus crystalline rocks, significantly greater formation temperatures and different desired fracture characteristics are among a number of factors that are likely to result in a gap of understanding of how to manage hydraulic fracturing practice for geothermal. Whereas the O&G community has had both the capital and the opportunity to develop its understanding of hydraulic fracturing operations empirically in the field as well through extensive R&D efforts, field testing opportunities for EGS are likely to be minimal due to the high expense of hydraulic fracturing field trials. A significant portion of the knowledge needed to guide the management of geothermal/EGS hydraulic fracturing operations will therefore likely have to come from experimental efforts and simulation. This paper describes ongoing efforts at Oak Ridge National Laboratory (ORNL) to develop an experimental capability to map the internal stresses/strains in core samples subjected to triaxial stress states and temperatures representative of EGS-like conditions using neutron diffraction based strain mapping techniques. This capability is being developed at ORNL\\'s Spallation Neutron Source, the world\\'s most powerful pulsed neutron source and is still in a proof of concept phase. A specialized pressure cell has been developed that permits independent radial and axial fluid pressurization of core samples, with axial flow through capability and a temperature rating up to 300 degrees C. This cell will ultimately be used to hydraulically pressurize EGS-representative core samples to conditions of imminent fracture and map the associated internal strain states of the sample. This will hopefully enable a more precise mapping of the rock material failure envelope, facilitate a more refined understanding of the mechanism of hydraulically induced rock fracture, particularly in crystalline rocks, and serve as a platform for validating and improving fracture simulation codes. The elements of the research program and preliminary strain mapping results of a Sierra White granite sample subjected only to compressive loading will be discussed in this paper.

  19. Hydraulic Fracture Monitoring: A Jonah Field Case Study

    E-Print Network [OSTI]

    Seher, T.

    2011-01-01T23:59:59.000Z

    Hydraulic fracturing involves the injection of a fluid to fracture oil and gas reservoirs, and thus increase their permeability. The process creates numerous microseismic events, which can be used to monitor subsurface ...

  20. Numerical Investigation of Interaction Between Hydraulic Fractures and Natural Fractures

    E-Print Network [OSTI]

    Xue, Wenxu

    2011-02-22T23:59:59.000Z

    Hydraulic fracturing of a naturally-fractured reservoir is a challenge for industry, as fractures can have complex growth patterns when propagating in systems of natural fractures in the reservoir. Fracture propagation near a natural fracture (NF...

  1. Investigation of Created Fracture Geometry through Hydraulic Fracture Treatment Analysis

    E-Print Network [OSTI]

    Ahmed, Ibraheem 1987-

    2012-11-30T23:59:59.000Z

    Successful development of shale gas reservoirs is highly dependent on hydraulic fracture treatments. Many questions remain in regards to the geometry of the created fractures. Production data analysis from some shale gas wells quantifies a much...

  2. Studying Hydraulic Fracturing through Time-variant Seismic Anisotropy

    E-Print Network [OSTI]

    Liu, Qifan

    2013-10-01T23:59:59.000Z

    . Studying seismic anisotropy by shear wave splitting can help us better understand the relationship between hydraulic fracturing and fracture systems. Shear wave splitting can be caused by fracturing and also can naturally take place in most sedimentary...

  3. Shale Gas Application in Hydraulic Fracturing Market is likely...

    Open Energy Info (EERE)

    Shale Gas Application in Hydraulic Fracturing Market is likely to grow at a rate of 6.46%, owing to increased natural gas demand Home > Groups > Renewable Energy RFPs Wayne31jan's...

  4. The hydraulic bump: The surface signature of a plunging jet

    E-Print Network [OSTI]

    Labousse, M.

    When a falling jet of fluid strikes a horizontal fluid layer, a hydraulic jump arises downstream of the point of impact, provided a critical flow rate is exceeded. We here examine a phenomenon that arises below this jump ...

  5. On-line hydraulic state prediction for water distribution systems

    E-Print Network [OSTI]

    Whittle, Andrew

    This paper describes and demonstrates a method for on?line hydraulic state prediction in urban water networks. The proposed method uses a Predictor?Corrector (PC) approach in which a statistical data?driven algorithm is ...

  6. Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. This project will provide the first ever formal evaluation of fracture and fracture flow evolution in an EGS reservoir following a hydraulic stimulation.

  7. Hydraulically actuated gas exchange valve assembly and engine using same

    DOE Patents [OSTI]

    Carroll, Thomas S. (Peoria, IL); Taylor, Gregory O. (Hinsdale, IL)

    2002-09-03T23:59:59.000Z

    An engine comprises a housing that defines a hollow piston cavity that is separated from a gas passage by a valve seat. The housing further defines a biasing hydraulic cavity and a control hydraulic cavity. A gas valve member is also included in the engine and is movable relative to the valve seat between an open position at which the hollow piston cavity is open to the gas passage and a closed position in which the hollow piston cavity is blocked from the gas passage. The gas valve member includes a ring mounted on a valve piece and a retainer positioned between the ring and the valve piece. A closing hydraulic surface is included on the gas valve member and is exposed to liquid pressure in the biasing hydraulic cavity.

  8. Chile, 2009 HYDRAULIC MANAGEMENT OF FILAMENTOUS ALGAE IN

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    7 th ISE & 8 th HIC Chile, 2009 HYDRAULIC MANAGEMENT OF FILAMENTOUS ALGAE IN OPEN-CHANNEL NETWORKS mechanical interventions to avoid overflows. Moreover, drifting algae cells increase water turbidity

  9. INVESTIGATIONS ON HYDRAULIC CEMENTS FROM SPENT OIL SHALE

    E-Print Network [OSTI]

    Mehta, P.K.

    2012-01-01T23:59:59.000Z

    ON HYDRAULIC CEMENTS FROM SPENT OIL SHALE P.K. Mehta and P.Cement Manufacture from Oil Shale, U.S. Patent 2,904,445,203 (1974), E. D. York, Amoco Oil Co. , letter to J, P. Fox,

  10. Steady state thermal hydraulic analysis of hydride fueled BWRs

    E-Print Network [OSTI]

    Ferroni, Paolo, Ph. D. Massachusetts Institute of Technology

    2006-01-01T23:59:59.000Z

    (cont.) Since the results obtained in the main body of the analysis account only for thermal-hydraulic constraints, an estimate of the power reduction due to the application of neutronic constraints is also performed. This ...

  11. Water Use for Hydraulic Fracturing: A Texas Sized Problem? 

    E-Print Network [OSTI]

    LeClere, David

    2014-01-01T23:59:59.000Z

    The state of Texas could face a 2.7 trillion gallon shortfall of water by 2060. Hydraulic fracturing (HF) requires large amounts of water for each well. Tax incentives should be offered to companies that substitute brackish ...

  12. Development and Simulation of Mathematical Modelling of Hydraulic Turbine

    E-Print Network [OSTI]

    Gagan Singh; D. S. Chauhan

    Abstract- Power system performance is affected by dynamic characteristics of hydraulic governor-turbines during and following any disturbance, such as occurrence of a fault, loss of a transmission line or a rapid change of load. Accurate modelling of hydraulic System is essential to characterize and diagnose the system response. In this article the mathematical modeling of hydraulic turbine is presented. The model is capable to implement the digital systems for monitoring and control replacing the conventional control systems for power, frequency and voltage. This paper presents the possibilities of modeling and simulation of the hydro power plants and performs an analysis of different control structures and algorithms. Key words: mathematical modeling, simulation, hydraulic turbine. I.

  13. Adaptive control of hydraulic shift actuation in an automatic transmission

    E-Print Network [OSTI]

    Thornton, Sarah Marie

    2013-01-01T23:59:59.000Z

    A low-order dynamic model of a clutch for hydraulic control in an automatic transmission is developed by separating dynamics of the shift into four regions based on clutch piston position. The first three regions of the ...

  14. Integrated hydraulic cooler and return rail in camless cylinder head

    DOE Patents [OSTI]

    Marriott, Craig D. (Clawson, MI); Neal, Timothy L. (Ortonville, MI); Swain, Jeff L. (Flushing, MI); Raimao, Miguel A. (Colorado Springs, CO)

    2011-12-13T23:59:59.000Z

    An engine assembly may include a cylinder head defining an engine coolant reservoir, a pressurized fluid supply, a valve actuation assembly, and a hydraulic fluid reservoir. The valve actuation assembly may be in fluid communication with the pressurized fluid supply and may include a valve member displaceable by a force applied by the pressurized fluid supply. The hydraulic fluid reservoir may be in fluid communication with the valve actuation assembly and in a heat exchange relation to the engine coolant reservoir.

  15. Gravity-free hydraulic jumps and metal femtocups

    E-Print Network [OSTI]

    Rama Govindarajan; Manikandan Mathur; Ratul DasGupta; N. R. Selvi; Neena Susan John; G. U. Kulkarni

    2006-10-03T23:59:59.000Z

    Hydraulic jumps created by gravity are seen every day in the kitchen sink. We show that at small scales a circular hydraulic jump can be created in the absence of gravity, by surface tension. The theory is motivated by our experimental finding of a height discontinuity in spreading submicron molten metal droplets created by pulsed-laser ablation. By careful control of initial conditions, we show that this leads to solid femtolitre cups of gold, silver, copper, niobium and tin.

  16. Long-term hydraulic properties of subsurface flow constructed wetlands

    E-Print Network [OSTI]

    Turner, Glenn Allen

    1994-01-01T23:59:59.000Z

    Vegetation Hydraulic Design Removal Kinetics and Organic Loading Summary lvlATERIALS AND METHODS 5 5 6 . 15 . 16 . 17 RESULTS AND DISCUSSION . Sieve Analysis System Performance Hydraulic Conductivity Porosity Turbulent Flow Comparison of One... analysis of the bull rock. System Performance The operation of this research project generally seemed to be successful. However, there were a few problems with the operation of the appamtus which warrant attention. The major problems were leakage...

  17. Process management using component thermal-hydraulic function classes

    DOE Patents [OSTI]

    Morman, James A. (Woodridge, IL); Wei, Thomas Y. C. (Downers Grove, IL); Reifman, Jaques (Western Springs, IL)

    1999-01-01T23:59:59.000Z

    A process management expert system where following malfunctioning of a component, such as a pump, for determining system realignment procedures such as for by-passing the malfunctioning component with on-line speeds to maintain operation of the process at full or partial capacity or to provide safe shut down of the system while isolating the malfunctioning component. The expert system uses thermal-hydraulic function classes at the component level for analyzing unanticipated as well as anticipated component malfunctions to provide recommended sequences of operator actions. Each component is classified according to its thermal-hydraulic function, and the generic and component-specific characteristics for that function. Using the diagnosis of the malfunctioning component and its thermal hydraulic class, the expert system analysis is carried out using generic thermal-hydraulic first principles. One aspect of the invention employs a qualitative physics-based forward search directed primarily downstream from the malfunctioning component in combination with a subsequent backward search directed primarily upstream from the serviced component. Generic classes of components are defined in the knowledge base according to the three thermal-hydraulic functions of mass, momentum and energy transfer and are used to determine possible realignment of component configurations in response to thermal-hydraulic function imbalance caused by the malfunctioning component. Each realignment to a new configuration produces the accompanying sequence of recommended operator actions. All possible new configurations are examined and a prioritized list of acceptable solutions is produced.

  18. Process management using component thermal-hydraulic function classes

    DOE Patents [OSTI]

    Morman, J.A.; Wei, T.Y.C.; Reifman, J.

    1999-07-27T23:59:59.000Z

    A process management expert system where following malfunctioning of a component, such as a pump, for determining system realignment procedures such as for by-passing the malfunctioning component with on-line speeds to maintain operation of the process at full or partial capacity or to provide safe shut down of the system while isolating the malfunctioning component. The expert system uses thermal-hydraulic function classes at the component level for analyzing unanticipated as well as anticipated component malfunctions to provide recommended sequences of operator actions. Each component is classified according to its thermal-hydraulic function, and the generic and component-specific characteristics for that function. Using the diagnosis of the malfunctioning component and its thermal hydraulic class, the expert system analysis is carried out using generic thermal-hydraulic first principles. One aspect of the invention employs a qualitative physics-based forward search directed primarily downstream from the malfunctioning component in combination with a subsequent backward search directed primarily upstream from the serviced component. Generic classes of components are defined in the knowledge base according to the three thermal-hydraulic functions of mass, momentum and energy transfer and are used to determine possible realignment of component configurations in response to thermal-hydraulic function imbalance caused by the malfunctioning component. Each realignment to a new configuration produces the accompanying sequence of recommended operator actions. All possible new configurations are examined and a prioritized list of acceptable solutions is produced. 5 figs.

  19. Laboratory Waste | Sample Preparation Laboratories

    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. DOE Office of Science (SC)Integrated Codes |Is Your Home asLCLSLaboratory Directors LaboratoryPlanning

  20. Geoscience Laboratory | Sample Preparation Laboratories

    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. DOE Office of Science (SC) Environmental AssessmentsGeoffrey CampbelllongApplyingGeorge T.Geoscience Laboratory

  1. Sandia National Laboratories: Photovoltaics

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

    PV Facilities On November 10, 2010, in Photovoltaic System Evaluation Laboratory Distributed Energy Technologies Laboratory Microsystems and Engineering Sciences Applications...

  2. Sandia National Laboratories: Facilities

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

    Laboratory (PSEL) National Supervisory Control and Data Acquisition (SCADA) Test Bed Center for Integrated Nanotechnologies (CINT) Distributed Energy Technologies Laboratory...

  3. Environmental | The Ames Laboratory

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

    Environmental Management Program at the Ames Laboratory includes Waste Management, Pollution Prevention, Recycling, Cultural Resources, and the Laboratory's Environmental...

  4. Numerical and physical modeling of hydraulic structures Hydraulic structures are used to control the flow of water in hydropower developments, urban

    E-Print Network [OSTI]

    Barthelat, Francois

    Numerical and physical modeling of hydraulic structures Hydraulic structures are used to control, their solution is found either by physical hydraulic modeling or, more recently, by numerical modeling significantly reduce turbine efficiency and cause premature mechanical failure when they occur at hydropower

  5. The effect of rock fragments on the hydraulic properties of soils

    SciTech Connect (OSTI)

    Zimmerman, R.W.; Bodvarsson, G.S.

    1995-04-01T23:59:59.000Z

    Many soils contain rock fragments the sizes of which are much larger than the average pore size of the sieved soil. Due to the fact that these fragments are often fairly large in relation to the soil testing apparatus, it is common to remove them before performing hydrologic tests on the soil. The question then arises as to whether or not there is a simple way to correct the laboratory-measured values to account for the fragments, so as to arrive at property values that can apply to the soil in situ. This question has arisen in the surface infiltration studies that are part of the site characterization program at Yucca Mountain, where accurate values of the hydraulic conductivities of near-surface soils are needed in order to accurately estimate infiltration rates. Although this problem has been recognized for some time, and numerous review articles have been written there are as yet no proven models to account for the effect of rock fragments on hydraulic conductivity and water retention. In this report we will develop some simple physically-based models to account for the effects of rock fragments on gross hydrological properties, and apply the resulting equations to experimental data taken from the literature. These models are intended for application to data that is currently being collected by scientists from the USGS on near-surface soils from Yucca Mountain.

  6. Development of a hydraulic borehole seismic source

    SciTech Connect (OSTI)

    Cutler, R.P.

    1998-04-01T23:59:59.000Z

    This report describes a 5 year, $10 million Sandia/Industry project to develop an advanced borehole seismic source for use in oil and gas exploration and production. The development Team included Sandia, Chevron, Amoco, Conoco, Exxon, Raytheon, Pelton, and GRI. The seismic source that was developed is a vertically oriented, axial point force, swept frequency, clamped, reaction-mass vibrator design. It was based on an early Chevron prototype, but the new tool incorporates a number of improvements which make it far superior to the original prototype. The system consists of surface control electronics, a special heavy duty fiber optic wireline and draw works, a cablehead, hydraulic motor/pump module, electronics module, clamp, and axial vibrator module. The tool has a peak output of 7,000 lbs force and a useful frequency range of 5 to 800 Hz. It can operate in fluid filled wells with 5.5-inch or larger casing to depths of 20,000 ft and operating temperatures of 170 C. The tool includes fiber optic telemetry, force and phase control, provisions to add seismic receiver arrays below the source for single well imaging, and provisions for adding other vibrator modules to the tool in the future. The project yielded four important deliverables: a complete advanced borehole seismic source system with all associated field equipment; field demonstration surveys funded by industry showing the utility of the system; industrial sources for all of the hardware; and a new service company set up by their industrial partner to provide commercial surveys.

  7. Hydraulic Fracturing in Michigan Integrated Assessment

    E-Print Network [OSTI]

    Kamat, Vineet R.

    /issues analyses, as many of the items connect to multiple topics. · Human health · Social/public perception · Environment/ecology · Policy/law · Economics · Geology/hydrodynamics · Technology Phase 1: Technical Reports, and · Stakeholder engagement process to gauge public concerns and perceptions. Phase 2: Integ

  8. sustainable environment

    E-Print Network [OSTI]

    sustainable resource management environment fisheries aquaculture Cefas capability statement #12 that they can manage their environments and resources in a responsible, effective and sustainable manner. Our costs · Understand, assess and develop opportunities in the short, medium and long-term · Build

  9. INVESTIGATION OF EFFICIENCY IMPROVEMENTS DURING CO2 INJECTION IN HYDRAULICALLY AND NATURALLY FRACTURED RESERVOIRS

    SciTech Connect (OSTI)

    David S. Schechter

    2003-10-01T23:59:59.000Z

    This report describes the work performed during the second year of the project, ''Investigating of Efficiency Improvements during CO{sub 2} Injection in Hydraulically and Naturally Fractured Reservoirs.'' The objective of this project is to perform unique laboratory experiments with artificial fractured cores (AFCs) and X-ray CT to examine the physical mechanisms of bypassing in HFR and NFR that eventually result in less efficient CO{sub 2} flooding in heterogeneous or fracture-dominated reservoirs. To achieve this objective, in this period we concentrated our effort on modeling the fluid flow in fracture surface, examining the fluid transfer mechanisms and describing the fracture aperture distribution under different overburden pressure using X-ray CT scanner.

  10. INVESTIGATION OF EFFICIENCY IMPROVEMENTS DURING CO2 INJECTION IN HYDRAULICALLY AND NATURALLY FRACTURED RESERVOIRS

    SciTech Connect (OSTI)

    David S. Schechter

    2004-04-26T23:59:59.000Z

    This report describes the work performed during the second year of the project, ''Investigating of Efficiency Improvements during CO{sub 2} Injection in Hydraulically and Naturally Fractured Reservoirs.'' The objective of this project is to perform unique laboratory experiments with artificial fractured cores (AFCs) and X-ray CT to examine the physical mechanisms of bypassing in HFR and NFR that eventually result in less efficient CO{sub 2} flooding in heterogeneous or fracture-dominated reservoirs. To achieve this objective, in this period we concentrated our effort on investigating the effect of CO{sub 2} injection rates in homogeneous and fractured cores on oil recovery and a strategy to mitigate CO{sub 2} bypassing in a fractured core.

  11. 2D Thermal Hydraulic Analysis and Benchmark in Support of HFIR LEU Conversion using COMSOL

    SciTech Connect (OSTI)

    Freels, James D [ORNL; Bodey, Isaac T [ORNL; Lowe, Kirk T [ORNL; Arimilli, Rao V [ORNL

    2010-09-01T23:59:59.000Z

    The research documented herein was funded by a research contract between the Research Reactors Division (RRD) of Oak Ridge National Laboratory (ORNL) and the University of Tennessee, Knoxville (UTK) Mechanical, Aerospace and Biomedical Engineering Department (MABE). The research was governed by a statement of work (SOW) which clearly defines nine specific tasks. This report is outlined to follow and document the results of each of these nine specific tasks. The primary goal of this phase of the research is to demonstrate, through verification and validation methods, that COMSOL is a viable simulation tool for thermal-hydraulic modeling of the High Flux Isotope Reactor (HFIR) core. A secondary goal of this two-dimensional phase of the research is to establish methodology and data base libraries that are also needed in the full three-dimensional COMSOL simulation to follow. COMSOL version 3.5a was used for all of the models presented throughout this report.

  12. Microbial communities in flowback water impoundments from hydraulic fracturing for recovery of shale gas

    SciTech Connect (OSTI)

    Mohan, Arvind Murali; Hartsock, Angela; Hammack, Richard W.; Vidic, Radisav D; Gregory, Kelvin B.

    2013-12-01T23:59:59.000Z

    Hydraulic fracturing for natural gas extraction from shale produces waste brine known as flowback that is impounded at the surface prior to reuse and/or disposal. During impoundment, microbial activity can alter the fate of metals including radionuclides, give rise to odorous compounds, and result in biocorrosion that complicates water and waste management and increases production costs. Here, we describe the microbial ecology at multiple depths of three flowback impoundments from the Marcellus shale that were managed differently. 16S rRNA gene clone libraries revealed that bacterial communities in the untreated and biocide-amended impoundments were depth dependent, diverse, and most similar to species within the taxa [gamma]-proteobacteria, [alpha]-proteobacteria, ?-proteobacteria, Clostridia, Synergistetes, Thermotogae, Spirochetes, and Bacteroidetes. The bacterial community in the pretreated and aerated impoundment was uniform with depth, less diverse, and most similar to known iodide-oxidizing bacteria in the [alpha]-proteobacteria. Archaea were identified only in the untreated and biocide-amended impoundments and were affiliated to the Methanomicrobia class. This is the first study of microbial communities in flowback water impoundments from hydraulic fracturing. The findings expand our knowledge of microbial diversity of an emergent and unexplored environment and may guide the management of flowback impoundments.

  13. Virtual Control Systems Environment (VCSE)

    SciTech Connect (OSTI)

    Atkins, Will

    2012-10-08T23:59:59.000Z

    Will Atkins, a Sandia National Laboratories computer engineer discusses cybersecurity research work for process control systems. Will explains his work on the Virtual Control Systems Environment project to develop a modeling and simulation framework of the U.S. electric grid in order to study and mitigate possible cyberattacks on infrastructure.

  14. Air PSE (Problem Solving Environment)

    E-Print Network [OSTI]

    Nizkorodov, Sergey

    PSE - 1 Air PSE (Problem Solving Environment) MODELLING OF AIR POLLUTION IN THE LOS ANGELES BASIN WITH AIR PSE Developed by Prof. Donald Dabdub Computational Environmental Sciences Laboratory Mechanical COMPUTER MODELS An air pollution model is a computer program that computes how the different chemical

  15. Virtual Control Systems Environment (VCSE)

    ScienceCinema (OSTI)

    Atkins, Will

    2014-02-26T23:59:59.000Z

    Will Atkins, a Sandia National Laboratories computer engineer discusses cybersecurity research work for process control systems. Will explains his work on the Virtual Control Systems Environment project to develop a modeling and simulation framework of the U.S. electric grid in order to study and mitigate possible cyberattacks on infrastructure.

  16. LABORATORY INVESTIGATIONS ON THE HYDRAULIC AND THERMOMECHANICAL PROPERTIES OF FRACTURED CRYSTALLINE ROCKS

    E-Print Network [OSTI]

    Witherspoon, P.A.

    2010-01-01T23:59:59.000Z

    of in s i t u j o i n t e d granite." I n t . J . Rock Mech.1979. "Waste disposal i n granite: Preliminary r e s u l t sintact samples of basalt, granite, marble, and other rocks.

  17. Hydraulic Hybrid and Conventional Parcel Delivery Vehicles' Measured Laboratory Fuel Economy on Targeted Drive Cycles

    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 PowerCherries 82981-1cnHigh School footballHydrogen and Fuel Cell Hydrogen andHydra-TH: AHybrid

  18. EC Driver - 41" Stroke Hydraulic Cylinder

    SciTech Connect (OSTI)

    Jaques, A.; /Fermilab

    1990-05-24T23:59:59.000Z

    It was decided to use a hydraulic cylinder resting on the floor of the argon spill trough in the EC carriage to drive the EC's motion on the center beam. Space was limited due to the spill bellows and their required support and containment system. The 0.0. of the cylinder had to be limited to 3 to 3-1/2 inches, maximum. The weight of a wet EC and carriage is estimated to be 320 tons. The rolling coefficient of friction of the Tychoway rollers chosen to guide the EC and carriage along the hardened centerbeam ways is claimed to be less than 0.0025. The driver will also need to overcome the forces produced by moving (rotating) the numerous bayonets located at the top of the cryostats in the many piping systems. These forces were conservatively estimated at 1000 lbs. The drive force required to overcome these forces was then calculated to be: 320(2,000) x 0.0025 + 1,000 = 2.600 lbs. (min. required). Due to the uncertainty in the actual roller coefficient of friction and the various unknowns in estimating the resistive forces contained in the piping and cabling systems attached to the cryostat, a conservative design factor of 5 was chosen. This should account for any uncertainty in our estimation of the minimum required drive force and also leaves us with a reserve to fall back on in case any unforeseen problems might arise. Thus the desired capacity of the driver was set at: (2,600) x 5 = 13,000 lbs. (design capacity). Assuming a 3 inch O.D. cylinder with a 1/2 inch wall (2 inch bore), we first analyzed a 1-3/8 inch diameter piston rod. Using Shigley & Mischke's 'Mechanical Engineering Design' (5th Ed.) and it's formulas for long columns with central loading, it was determined that a 1-3/8 inch diameter rod would not suffice, given our safety factor of 2. Increasing the piston rod diameter to 1-1/2 inches proved to be sufficient. The maximum allowable load came out to be approximately 17,000 lbs., which is greater than the 13,000 lbs. design capacity. With a 1-1/2 inch rod, a 2 inch bore and 10,000 psi capacity, the maximum return (retraction) force is: ({pi}/4)(2{sup 2}-1.52) x (10,000) = 13,744 lbs. (return force). This meets the desired design capacity of the cylinder. On the extension of the cylinder, the pressure will be limited such to produce only the 13,000 lb. design capacity. Through the use of a regulator on the cylinder extension inlet, the pressure will be limited to: 13,000/[({pi}/4)(2){sup 2}] {approx_equal} 4,200 psi. (regulator setting) and 4,200 x ({pi}/4)(2){sup 2} = 13,195 lbs. (thrust force). Another reference used by some Fermi engineers in designing hydraulic cylinders is the 'Design Engineers Handbook', Bulletin 0224-B1 published by the Parker-Hannifin Corporation. The piston rod-stroke selection table on page b-5 is used to determine the stroke factor. Our setup most approximates Case II of the table which gives a stroke factor of 0.70. Multiplying this by the actual stroke (41-inch) gives us a basic length of 28.7-inch. Using the piston rodstroke selection graph on page b-6, the 1-1/2 inch rod and 28.7-inch basic length indicate an allowable thrust of approximately 13,000 lbs. According to the Chief Application Engineer at the Parker-Hannifin regional sales office in Des Plaines, IL, a min imum safety factor of 4 can be assumed in the piston rod-stroke selection graph, possibly even higher. This would be at least twice as high as our initial safety factor of 2. Thus we feel our cylinder design falls well within the acceptable region of this reference.

  19. Advanced hydraulic fracturing methods to create in situ reactive barriers

    SciTech Connect (OSTI)

    Murdoch, L. [FRX Inc., Cincinnati, OH (United States)]|[Clemson Univ., SC (United States). Dept. of Geological Sciences; Siegrist, B.; Meiggs, T. [Oak Ridge National Lab., TN (United States)] [and others

    1997-12-31T23:59:59.000Z

    This article describes the use of hydraulic fracturing to increase permeability in geologic formations where in-situ remedial action of contaminant plumes will be performed. Several in-situ treatment strategies are discussed including the use of hydraulic fracturing to create in situ redox zones for treatment of organics and inorganics. Hydraulic fracturing methods offer a mechanism for the in-situ treatment of gently dipping layers of reactive compounds. Specialized methods using real-time monitoring and a high-energy jet during fracturing allow the form of the fracture to be influenced, such as creation of assymmetric fractures beneath potential sources (i.e. tanks, pits, buildings) that should not be penetrated by boring. Some examples of field applications of this technique such as creating fractures filled with zero-valent iron to reductively dechlorinate halogenated hydrocarbons, and the use of granular activated carbon to adsorb compounds are discussed.

  20. On equivalence of thinning fluids used for hydraulic fracturing

    E-Print Network [OSTI]

    Linkov, Alexander

    2012-01-01T23:59:59.000Z

    The paper aims to answer the question: if and how non-Newtonian fluids may be compared in their mechanical action when used for hydraulic fracturing? By employing the modified formulation of the PKN problem we obtain its simple analytical solutions in the cases of perfectly plastic and Newtonian fluids. Since the results for shear thinning fluids are intermediate between those for these cases, the obtained equation for the fracture length suggests a criterion of the equivalence of various shear thinning fluids for the problem of hydraulic fractures. We assume fluids equivalent in their hydrofracturing action, when at a reference time they produce fractures of the same length. The equation for the fracture length translates the equivalence in terms of the hydraulic fracture length and treatment time into the equivalence in terms of the properties of a fracturing fluid (behavior and consistency indices). Analysis shows that the influence of the consistency and behavior indices on the fracture length, particle v...

  1. DSW Environment

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

    pdf) Section 2 - Proposed Action and Alternatives (6.8 MB pdf) Section 3 - Affected Environment for the extension of the right of way to the Harry Allen Substation and for the...

  2. Sandia National Laboratories: Nuclear Energy Systems Laboratory...

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

    Laboratory (NESL) Transient Nuclear Fuels Testing Radiation Effects Sciences Solar Electric Propulsion Nuclear Energy Safety Technologies Experimental Testing...

  3. Sandia National Laboratories: Nuclear Energy Systems Laboratory...

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

    Laboratory (NESL) Transient Nuclear Fuels Testing Radiation Effects Sciences Solar Electric Propulsion Nuclear Energy Safety Technologies Experimental Testing Phenomenological...

  4. Comparison of methods for determining soil hydraulic characteristics

    E-Print Network [OSTI]

    Byrd Humphreys, Kathryn

    1979-01-01T23:59:59.000Z

    to the comprehension of soil water movement. The theory of water movement in soil is based on Darcy's Law which states that flow is proportional to the hydraulic gradient. The equation representing one dimensional flow in a homogeneous iso- tropic media can... of the gravitational head (hg) and the pressure head (h) as follows: H=hg+h In unsaturated flow, the components of the flow equation, K and H, are both dependent on the water content of the soil. These relation- ships between soil water content versus hydraulic...

  5. Ames Laboratory Ames, Iowa Argonne National Laboratory Argonne...

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

    Laboratory Los Alamos, New Mexico National Energy Technology Laboratory Morgantown, West Virginia Pittsburgh, Pennsylvania Albany, Oregon National Renewable Energy Laboratory...

  6. HAZARD ALERT ENVIRONMENT HEALTH AND SAFETY

    E-Print Network [OSTI]

    Calgary, University of

    HAZARD ALERT ENVIRONMENT HEALTH AND SAFETY EH&S Hazard Alert - 2010.06.18 HAZARD ALERT ­ Reaction Manual. http://www.ucalgary.ca/safety/files/safety/LaboratoryFumeHoodUserStandard.pdf #12;HAZARD ALERT ENVIRONMENT HEALTH AND SAFETY EH&S Hazard Alert - 2010.06.18 In the recent incident the sash was closed while

  7. The Effect of Proppant Size and Concentration on Hydraulic Fracture Conductivity in Shale Reservoirs 

    E-Print Network [OSTI]

    Kamenov, Anton

    2013-04-11T23:59:59.000Z

    Hydraulic fracture conductivity in ultra-low permeability shale reservoirs is directly related to well productivity. The main goal of hydraulic fracturing in shale formations is to create a network of conductive pathways in the rock which increase...

  8. Hydraulic Fracture Optimization with a Pseudo-3D Model in Multi-layered Lithology 

    E-Print Network [OSTI]

    Yang, Mei

    2011-10-21T23:59:59.000Z

    Hydraulic Fracturing is a technique to accelerate production and enhance ultimate recovery of oil and gas while fracture geometry is an important aspect in hydraulic fracturing design and optimization. Systematic design ...

  9. Pediatric Mechanical Circulatory Support Applications for Frequency-Leveraged Piezoelectric Hydraulic Pumps

    E-Print Network [OSTI]

    Valdovinos, John

    2014-01-01T23:59:59.000Z

    B. Olsen, “Axial flow blood pumps,” ASAIO J. Am. Soc. Artif.of a Piezoelectric-hydraulic Pump with Active Valves,” J.Piezoelectric Hydraulic Pump Development,” J. Intell. Mater.

  10. Water management in hydraulic fracturing-a planning and decision optimization platform

    E-Print Network [OSTI]

    Mehta, Neha, S.M. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    Recent developments in hydraulic fracturing technology have enabled cost-effective production of unconventional resources, particularly shale gas in the U.S. The process of hydraulic fracturing is water intensive, requiring ...

  11. Park City/ANS 1 EVOLVE LITHIUM TRAY THERMAL-HYDRAULIC ANALYSIS

    E-Print Network [OSTI]

    California at Los Angeles, University of

    Park City/ANS 1 EVOLVE LITHIUM TRAY THERMAL-HYDRAULIC ANALYSIS M.H. Anderson, J.G. Murphy, M is viable, thermal-hydraulic analyses were performed on the outboard liquid lithium blanket trays. Various

  12. Quantitative Metrics of Soil Structure and Relationships to Hydraulic Properties in a Vertic Argiudoll

    E-Print Network [OSTI]

    Eck, Dennis V.

    2014-05-31T23:59:59.000Z

    to soil hydraulic parameters, especially saturated hydraulic conductivity (Ks) and water retention curve (WRC) parameters. Soil moisture data collected at the lysimeter, in conjunction with atmospheric data from an adjacent tower, were used as inputs...

  13. THERMAL-HYDRAULIC STUDIES IN SUPPORT OF THE ARIES-CS T-TUBE DIVERTOR DESIGN

    E-Print Network [OSTI]

    THERMAL-HYDRAULIC STUDIES IN SUPPORT OF THE ARIES-CS T-TUBE DIVERTOR DESIGN S. I. ABDEL-KHALIK,*a L and engineering optimization. This paper focuses on the thermal-hydraulic analyses and experiments performed

  14. The Effect of Proppant Size and Concentration on Hydraulic Fracture Conductivity in Shale Reservoirs

    E-Print Network [OSTI]

    Kamenov, Anton

    2013-04-11T23:59:59.000Z

    Hydraulic fracture conductivity in ultra-low permeability shale reservoirs is directly related to well productivity. The main goal of hydraulic fracturing in shale formations is to create a network of conductive pathways in the rock which increase...

  15. Analytical methods for estimating saturated hydraulic conductivity in a tile-drained field

    E-Print Network [OSTI]

    Selker, John

    Analytical methods for estimating saturated hydraulic conductivity in a tile-drained field David E; Saturated hydraulic conductivity; Field scale; Tile drains; Water table 1. Introduction The use of spatially

  16. A New Analytical Method to Quantify Residual Fluid Cleanup in Hydraulic Fractures

    E-Print Network [OSTI]

    Zarrin, Tahira

    2014-04-17T23:59:59.000Z

    hydraulic fracturing fluid has always been a major issue, and is believed to drastically undermine the performance of hydraulically fractured wells. Several attempts have been made to quantify the damage associated with residual fluid, with varying level...

  17. Aleksandr Obabko | Argonne National Laboratory

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

    Computational Scientist Aleks Obabko is actively working on advanced reactor thermal-hydraulic modeling. He currently is head of an ALCC (ASCR Leadership Computing Challenge)...

  18. Hydraulic constraints on photosynthesis in subtropical evergreen broad leaf forest and pine woodland trees of the Florida Everglades

    E-Print Network [OSTI]

    Jones, Tim J.; Luton, Corene D.; Santiago, Louis S.; Goldstein, Guillermo

    2010-01-01T23:59:59.000Z

    PAPER Hydraulic constraints on photosynthesis in subtropicalwater transport and photosynthesis represents the trade-offwater transport and photosynthesis to evaluate hydraulic

  19. Sandia National Laboratories: IRED

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

    SMART Grid, Solar Sandia National Laboratories, the Electric Power Research Institute (EPRI) and European Distributed Energies Research Laboratories (DERlab) have organized a...

  20. COMPARISON OF PNEUMATIC AND HYDRAULIC FRACTURING FOR EMPLACEMENT OF TREATMENT MATERIALS IN LOW

    E-Print Network [OSTI]

    Mark Strong; Craig Sprinkle; Denis Ewing

    , Georgia to evaluate the performance of pneumatic and hydraulic frac-turing for emplacement of in situ

  1. Engine having hydraulic and fan drive systems using a single high pressure pump

    DOE Patents [OSTI]

    Bartley, Bradley E. (Manito, IL); Blass, James R. (Bloomington, IL); Gibson, Dennis H. (Chillicothe, IL)

    2000-01-01T23:59:59.000Z

    An engine comprises a hydraulic system attached to an engine housing that includes a high pressure pump and a hydraulic fluid flowing through at least one passageway. A fan drive system is also attached to the engine housing and includes a hydraulic motor and a fan which can move air over the engine. The hydraulic motor includes an inlet fluidly connected to the at least one passageway.

  2. Microseismic mapping of a Cotton Valley hydraulic fracture using decimated downhole arrays J.T. Rutledge

    E-Print Network [OSTI]

    Microseismic mapping of a Cotton Valley hydraulic fracture using decimated downhole arrays J three hydraulic fracture operations in the Cotton Valley gas field of East Texas. Two 48-level, 3 a consortia of operators and service companies conducted an extensive hydraulic fracture imaging demonstration

  3. Surrogate-based optimization of hydraulic fracturing in pre-existing fracture networks

    E-Print Network [OSTI]

    Lu, Zhiming

    Surrogate-based optimization of hydraulic fracturing in pre-existing fracture networks Mingjie Chen Keywords: Hydraulic fracturing Fractal dimension Surrogate model Optimization Global sensitivity a b s t r a c t Hydraulic fracturing has been used widely to stimulate production of oil, natural gas

  4. 2006 GeoX Conference, pages 1 to 6 Characterisation of hydraulic fractures in

    E-Print Network [OSTI]

    2006 GeoX Conference, pages 1 to 6 Characterisation of hydraulic fractures in limestones using X, France Jacques.Desrues@hmg.inpg.fr ABSTRACT: Hydraulic tension fractures were produced in porous, hydraulic fracture, permeability tensor MOTS-CLÃ?S: microtomographie, fracturation hydraulique, tenseur de

  5. Implicit level set schemes for modeling hydraulic fractures using the Elizaveta Gordeliy, Anthony Peirce

    E-Print Network [OSTI]

    Peirce, Anthony

    Implicit level set schemes for modeling hydraulic fractures using the XFEM Elizaveta Gordeliy Copyright Ã? 2013 Published by Elsevier B.V. All rights reserved. 1. Introduction Hydraulic fractures (HF form 13 July 2013 Accepted 27 July 2013 Available online 20 August 2013 Keywords: XFEM Hydraulic

  6. Enrichment strategies and convergence properties of the XFEM for hydraulic fracture problems

    E-Print Network [OSTI]

    Peirce, Anthony

    Enrichment strategies and convergence properties of the XFEM for hydraulic fracture problems Finite Ele- ment Method (XFEM) for modeling hydraulic fractures (HF), two classes of boundary value energy, is not suitable for modeling hydraulic fractures in which the uid and the fracture fronts

  7. A Hybrid, Neuro-Genetic Approach to Hydraulic Fracture Treatment Design and Optimization

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE 36602 A Hybrid, Neuro-Genetic Approach to Hydraulic Fracture Treatment Design and Optimization and novel methodology for optimal design of hydraulic fracture treatments in a gas storage field. What makes very little (almost none) reservoir data availability. Lack of engineering data for hydraulic fracture

  8. A model for turbulent hydraulic fracture and application to crack propagation at glacier beds

    E-Print Network [OSTI]

    Click Here for Full Article A model for turbulent hydraulic fracture and application to crack suggest that fluidinduced hydraulic fracture of an ice sheet from its bed sometimes occurs quickly. Citation: Tsai, V. C., and J. R. Rice (2010), A model for turbulent hydraulic fracture and application

  9. Spatial model coupling -an efficient scheme to combine hydraulic and geomechanic simulations

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    Spatial model coupling - an efficient scheme to combine hydraulic and geomechanic simulations present a spatial coupling approach with two subdomains [1]: Hydro-geomechanical model full model approach-field (geomechanics are neglected) hydro-geomechanical subdomain el2p model hydraulic subdomain 2p model hydraulic

  10. Nonlinear State Space Model of a Hydraulic Wind Power Transfer Masoud Vaezi1

    E-Print Network [OSTI]

    Zhou, Yaoqi

    state space representation of a hydraulic wind energy transfer for a single wind turbine systemNonlinear State Space Model of a Hydraulic Wind Power Transfer Masoud Vaezi1 , Majid Deldar1 1, IUPUI. Gearless hydraulic wind power systems are considered as nonlinear models because of some discrete

  11. Optimal Design of Power-Split Transmissions for Hydraulic Hybrid Passenger Vehicles

    E-Print Network [OSTI]

    Li, Perry Y.

    Optimal Design of Power-Split Transmissions for Hydraulic Hybrid Passenger Vehicles Kai Loon Cheong, Perry Y. Li and Thomas R. Chase Abstract-- Hydraulic hybrid vehicles are inherently power dense. Power and input coupled power-split configurations. Keywords: Hybrid vehicles, hydraulics, power-split, engine

  12. SOFT SWITCHING APPROACH TO REDUCING TRANSITION LOSSES IN AN ON/OFF HYDRAULIC VALVE

    E-Print Network [OSTI]

    Li, Perry Y.

    SOFT SWITCHING APPROACH TO REDUCING TRANSITION LOSSES IN AN ON/OFF HYDRAULIC VALVE Michael B/off controlled hydraulic system is proposed. There has been a growing interest in the use of on/off valves to control hydraulic systems as a means of improving system efficiency. While on/off valves are efficient

  13. Integrated mechatronic design of precision and energy saving electro-hydraulic systems

    E-Print Network [OSTI]

    Yao, Bin

    - 360 - Integrated mechatronic design of precision and energy saving electro-hydraulic systems Bin less energy consumption are the goals for the design of any industrial systems including electro-hydraulics on the precision and energy saving control of electro-hydraulic systems. Specifically, instead of the traditional

  14. HYDRAULIC CONDUCTIVITY ESTIMATION IN PARTIALLY SATURATED SOILS USING THE ADJOINT METHOD

    E-Print Network [OSTI]

    Efendiev, Yalchin

    HYDRAULIC CONDUCTIVITY ESTIMATION IN PARTIALLY SATURATED SOILS USING THE ADJOINT METHOD J. SANTOS for the estimation of the saturated hydraulic conductivity k in a partially saturated soil Q is proposed. Groundwater exam- ple showing the implementation of the algorithm to estimate the saturated hydraulic conductivity

  15. Analysis of hydraulic tomography using temporal moments of drawdown recovery data

    E-Print Network [OSTI]

    Daniels, Jeffrey J.

    Analysis of hydraulic tomography using temporal moments of drawdown recovery data Junfeng Zhu 2006. [1] Transient hydraulic tomography (THT) is a potentially cost-effective and high- resolution technique for mapping spatial distributions of the hydraulic conductivity and specific storage in aquifers

  16. Study on the hydraulic conductivity of Boom clay1 Yong-Feng Deng1, 2

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Study on the hydraulic conductivity of Boom clay1 2 Yong-Feng Deng1, 2 , Anh-Minh Tang2 , Yu Geotechnical Journal 48 (2011) 1461-1470" DOI : 10.1139/T11-048 #12;2 Abstract1 The hydraulic conductivity. Experimental results show that the hydraulic conductivity3 is mainly governed by the soil porosity

  17. APS/123-QED Hydraulic Flow through a Channel Contraction: Multiple Steady States

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    APS/123-QED Hydraulic Flow through a Channel Contraction: Multiple Steady States Benjamin Akers with a complex hydraulic jump in the contraction occurring in a small section of the bc/b0 and Froude number parameter plane. One- dimensional hydraulic theory provides a comprehensive leading-order approximation

  18. A Hydraulic Capture Application for Optimal Remediation Design K. R. Fowlera

    E-Print Network [OSTI]

    1 A Hydraulic Capture Application for Optimal Remediation Design K. R. Fowlera , C. T. Kelley b , C Carolina Chapel Hill, NC 27599-7400, USA The goal of a hydraulic capture model for remediation purposes is desirable and often influences the choice of solution method. In this paper we present two hydraulic capture

  19. Non-Invasive Measurement of Heartbeat with a Hydraulic Bed Sensor

    E-Print Network [OSTI]

    He, Zhihai "Henry"

    Non-Invasive Measurement of Heartbeat with a Hydraulic Bed Sensor Progress, Challenges}@mail.missouri.edu, SkubicM@missouri.edu Abstract--A hydraulic bed sensor has been developed to non and development of the system. Keywords--hydraulic bed sensor; eldercare monitoring; ballistocardiography I

  20. Equivalent hydraulic conductivity of an experimental stratigraphy: Implications for basin-scale flow

    E-Print Network [OSTI]

    Gable, Carl W.

    Equivalent hydraulic conductivity of an experimental stratigraphy: Implications for basin-scale groundwater flow models are the estimation of representative hydraulic conductivity for the model units. In this study, high-resolution, fully heterogeneous basin-scale hydraulic conductivity map is generated

  1. 1 Estimating aquifer hydraulic properties from the inversion of surface 2 Streaming Potential (SP) anomalies

    E-Print Network [OSTI]

    Sailhac, Pascal

    1 Estimating aquifer hydraulic properties from the inversion of surface 2 Streaming Potential (SP with the geometry of the water table. It follows that 11 SP measurements can be used to estimate aquifer hydraulic and found that we 14 are able to estimate the hydraulic conductivity and the depth 15 and the thickness

  2. Complex hydraulic and substrate variables limit freshwater mussel species richness and abundance

    E-Print Network [OSTI]

    Vaughn, Caryn

    Complex hydraulic and substrate variables limit freshwater mussel species richness and abundance. We examined how substrate and complex hydraulic variables limit the distribution of freshwater mussels. We sampled mussels and measured substrate and hydraulic variables (at low and high flows) at 6

  3. Combining hydraulic knowledge and uncertain gaugings in the estimation of hydrometric rating curves: A Bayesian approach

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Combining hydraulic knowledge and uncertain gaugings in the estimation of hydrometric rating curves HHLY, Hydrology-Hydraulics 5 rue de la Doua CS70077 69626 Villeurbanne cedex, France bCETE Ile analysis of rating curves arises from the quantitative as- sessment of (i) the hydraulic controls

  4. Variation in hydraulic conductivity of mangroves: influence of species, salinity, and nitrogen and phosphorus availability

    E-Print Network [OSTI]

    Ling, Sharon Ewe Mei

    Variation in hydraulic conductivity of mangroves: influence of species, salinity, and nitrogen identity and variation in salinity and nutrient availability influence the hydraulic conductivity of mangroves. Using a fertilization study of two species in Florida, we found that stem hydraulic conductivity

  5. Transient effective hydraulic conductivities under slowly and rapidly varying mean gradients in bounded three-

    E-Print Network [OSTI]

    Tartakovsky, Daniel M.

    Transient effective hydraulic conductivities under slowly and rapidly varying mean gradients it Darcian in real or transformed domains. Each such situation gives rise to an effective hydraulic-time. In this paper we develop first-order analytical expressions for effective hydraulic conductivity under three

  6. Weakly Dispersive Hydraulic Flows in a Contraction -Parametric Solutions and Linear Stability

    E-Print Network [OSTI]

    Ee, Bernard Kuowei

    Weakly Dispersive Hydraulic Flows in a Contraction - Parametric Solutions and Linear Stability typically results is a transition of flow characteristics within the contraction yielding hydraulic flows of the contraction. As considered here, a hydraulic solution is generally one where the fluid response is a function

  7. Variation of hydraulic conductance of some adult conifers under natural conditions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Variation of hydraulic conductance of some adult conifers under natural conditions A. Granier, N; in the liquid phase, the flow depends upon water potential gradients and hydraulic conductance from the soil present here some evaluations of hydraulic conductance of trees growing under natural conditions. Data

  8. Change in the hydraulic properties of a Brazilian clay Ferralsol on clearing for pasture

    E-Print Network [OSTI]

    Boyer, Edmond

    Change in the hydraulic properties of a Brazilian clay Ferralsol on clearing for pasture L. C 80 to 300 m in size. The aim of this study was to analyze how the hydraulic properties of a clay retention properties were determined by using pressure cell equipment. We determined the saturated hydraulic

  9. Hydraulic adjustment of Scots pine across Europe J. Martnez-Vilalta1,2

    E-Print Network [OSTI]

    Mencuccini, Maurizio

    Research Hydraulic adjustment of Scots pine across Europe J. Martínez-Vilalta1,2 , H. Cochard3), 8903 Birmensdorf, Switzerland Summary · The variability of branch-level hydraulic properties, xylem anatomy, sapwood- and leaf-specific hydraulic conductivity (KS and KL), vulnerability to embolism

  10. The Design of an Adaptive Multiple Agent ConstraintBased Controller for a Complex Hydraulic System

    E-Print Network [OSTI]

    Bahler, Dennis R.

    The Design of an Adaptive Multiple Agent Constraint­Based Controller for a Complex Hydraulic System­order predicate calculus (FOPC) language applied in a complex hydraulic system are presented. The concept an update strategy which makes a real time adaptive hydraulic control for all 20 cities possible. 1

  11. Upscaling of soil hydraulic properties for steady state evaporation and infiltration

    E-Print Network [OSTI]

    Mohanty, Binayak P.

    Upscaling of soil hydraulic properties for steady state evaporation and infiltration Jianting Zhu September 2002. [1] Estimation of effective/average soil hydraulic properties for large land areas and guidelines for upscaling soil hydraulic properties in an areally heterogeneous field. In this study, we

  12. HYPower Hydraulic Power Supply Unit University of Saskatchewan -Mechanical Engineering Fluid Power and Controls

    E-Print Network [OSTI]

    Saskatchewan, University of

    HYPower Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ­ Fluid Power and Controls ID: FP0002 Rev: 002 Date: May 31, 2010 Page: 1 of 7 Hydraulic Power Supply (HYPower-5462 Secondary Contact: #12;HYPower Hydraulic Power Supply Unit University of Saskatchewan - Mechanical

  13. Hydraulic barrier design and applicability for managing the risk of CO2 leakage from deep saline

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Hydraulic barrier design and applicability for managing the risk of CO2 leakage from deep saline modifying the leak hydraulic properties (e.g. permeability) may be unfeasible. An appealing option.e. by creating a hydraulic barrier. The present article presents and discusses the operational and strategic

  14. URTeC 1620617 Thermal Shock in Reservoir Rock Enhances the Hydraulic

    E-Print Network [OSTI]

    Patzek, Tadeusz W.

    URTeC 1620617 Thermal Shock in Reservoir Rock Enhances the Hydraulic Fracturing of Gas Shales Saeid through strain and stress. As the temperature diffuses from hydraulic fracture into reservoir the rock matrix beyond hydraulic fracturing stimulation by cooling down the rock. The physics

  15. Hydraulic limits on maximum plant transpiration and the emergence of the safetyefficiency trade-off

    E-Print Network [OSTI]

    Jackson, Robert B.

    Hydraulic limits on maximum plant transpiration and the emergence of the safety­efficiency trade.12126 Key words: hydraulic limitation, safety­ efficiency trade-off, soil­plant­atmosphere model, trait hydraulics constrain ecosystem productivity by setting physical limits to water transport and hence carbon

  16. ORIGINAL ARTICLE Cell-to-cell pathway dominates xylem-epidermis hydraulic

    E-Print Network [OSTI]

    Holbrook, N. Michele

    ORIGINAL ARTICLE Cell-to-cell pathway dominates xylem-epidermis hydraulic connection the hydraulic linkage between xylem and epidermis, epidermal cell turgor pressure (Pt) in leaves of Tradescantia- tutes a significant part of the leaf hydraulic path from xylem to epidermis. Furthermore, perfusion of H

  17. Engine with hydraulic fuel injection and ABS circuit using a single high pressure pump

    DOE Patents [OSTI]

    Bartley, Bradley E. (Manito, IL); Blass, James R. (Bloomington, IL); Gibson, Dennis H. (Chillicothe, IL)

    2001-01-01T23:59:59.000Z

    An engine system comprises a hydraulically actuated fuel injection system and an ABS circuit connected via a fluid flow passage that provides hydraulic fluid to both the fuel injection system and to the ABS circuit. The hydraulically actuated system includes a high pressure pump. The fluid control passage is in fluid communication with an outlet from the high pressure pump.

  18. USE OF GCLS TO CONTROL LEAKAGE THROUGH GEOMEMBRANE DEFECTS UNDER HIGH HYDRAULIC HEADS

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    USE OF GCLS TO CONTROL LEAKAGE THROUGH GEOMEMBRANE DEFECTS UNDER HIGH HYDRAULIC HEADS Christine T liners under conditions representative of dams (i.e., high hydraulic heads). Specifically, the objective of interface contact, hydraulic head, and GCL hydration procedures on the leakage rate were considered

  19. Effective Unsaturated Hydraulic Conductivity for Computing One-Dimensional Flow in Heterogeneous Porous Media

    E-Print Network [OSTI]

    Effective Unsaturated Hydraulic Conductivity for Computing One-Dimensional Flow in Heterogeneous-dimensional unsaturated flow in vertically stratified porous media are examined. Saturated hydraulic conductivity and the alpha parameter of the exponential hydraulic conductivity function were assumed to vary from soil layer

  20. APS/123-QED Hydraulic Flow through a Contraction: Multiple Steady States

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    APS/123-QED Hydraulic Flow through a Contraction: Multiple Steady States Benjamin Akers Department states, as well as a steady reservoir with a two-dimensional hydraulic jump in the contraction occur-dimensional hydraulic theory provides a comprehensive leading-order explanation, but quadratic friction is re- quired

  1. On the Relation Between Steep Monoclinal Flexure Zones and Steep Hydraulic Gradients

    E-Print Network [OSTI]

    Lyakhovsky, Vladimir

    On the Relation Between Steep Monoclinal Flexure Zones and Steep Hydraulic Gradients by Y. Yechieli1, U. Kafri2, S. Wollman2, V. Lyakhovsky2, and R. Weinberger2 Abstract Steep hydraulic gradients of the hydraulic conductivity, which is responsible for the steep gradients, has seldom been studied. We present

  2. Comparison of Hydraulic-Burst and Ball-on-Ring Tests for Measuring Biaxial Strength

    E-Print Network [OSTI]

    Matthewson, M. John

    Comparison of Hydraulic-Burst and Ball-on-Ring Tests for Measuring Biaxial Strength Anupa Simpatico­0909 The statistics of failure of the hydraulic-burst (HB) test were compared with those of the ball-on-ring (BOR tests are ball-on-ring (BOR) and ring-on-ring (ROR); however, hydraulic-burst (HB) tests also have

  3. Centre Hydraulic Power Supply Unit University of Saskatchewan -Mechanical Engineering Fluid Power and Controls

    E-Print Network [OSTI]

    Saskatchewan, University of

    Centre Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ­ Fluid Power and Controls ID: FP0003 Rev: 001 Date: May 31, 2010 Page: 1 of 7 Centre Hydraulic Power Supply;Centre Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ­ Fluid Power

  4. East Hydraulic Power Supply Unit University of Saskatchewan -Mechanical Engineering Fluid Power and Controls

    E-Print Network [OSTI]

    Saskatchewan, University of

    East Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ­ Fluid Power and Controls ID: FP0004 Rev: 001 Date: May 31, 2010 Page: 1 of 7 East Hydraulic Power Supply and Test Bench. Approved By: Primary Contact: Doug Bitner Rm: 1B15.1 966-5462 Secondary Contact: #12;East Hydraulic Power

  5. Effective hydraulic parameters for steady state vertical flow in heterogeneous soils

    E-Print Network [OSTI]

    Mohanty, Binayak P.

    Effective hydraulic parameters for steady state vertical flow in heterogeneous soils Jianting Zhu August 2003. [1] In hydroclimate and land-atmospheric interaction models, effective hydraulic properties are needed at large grid scales. In this study, the effective soil hydraulic parameters of the areally

  6. Hydraulic architecture and tracheid allometry in mature Pinus palustris and Pinus elliottii trees

    E-Print Network [OSTI]

    Martin, Timothy

    Hydraulic architecture and tracheid allometry in mature Pinus palustris and Pinus elliottii trees C and better-drained micro- sites than SL. The hydraulic architecture and tracheid dimen- sions of roots, trunk but weak trade-off between water conduction efficiency and safety. Tracheid hydraulic diameter (Dh

  7. Summary We investigated hydraulic conductance charac-teristics and associated dry matter production and distribution

    E-Print Network [OSTI]

    DeJong, Theodore

    Summary We investigated hydraulic conductance charac- teristics and associated dry matter') vigor rootstock. `K146-43' and `Hiawatha' rootstocks had 27 and 52% lower mean leaf-specific hydraulic and rootstock, which may be a compensatory response to the differences in leaf specific hydraulic conduc- tance

  8. DETERMINATION OF SOIL HYDRAULIC PROPERTIES IN A PART OF HINDON RIVER CATCHMENT USING SOILPROP SOFTWARE

    E-Print Network [OSTI]

    Kumar, C.P.

    DETERMINATION OF SOIL HYDRAULIC PROPERTIES IN A PART OF HINDON RIVER CATCHMENT USING SOILPROP) and unsaturated hydraulic conductivity (K). To model the retention and movement of water and chemicals and hydraulic conductivity. It is often convenient to represent these functions by means of relatively simple

  9. Characterizing hydraulic properties of filter material of a Vertical Flow1 Constructed Wetland2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Characterizing hydraulic properties of filter material of a Vertical Flow1 Constructed Wetland2 A Characterizing the hydraulic properties of filter material used in a vertical flow11 constructed wetland (VFCW of porous mineral material and13 organic matter that makes hydraulic characterization a difficult task. Here

  10. Hydraulic Mechanisms of the Deterioration of Concrete Sleeper Rail Seats , R. Kernes

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    Hydraulic Mechanisms of the Deterioration of Concrete Sleeper Rail Seats J. Zeman 2 , R. Kernes 1 to have five potential mechanisms, and this research investigates three of them: hydraulic pressure cracking, hydro-abrasive erosion, and abrasion. In order to investigate the two hydraulic-driven mechanisms

  11. Hydraulic Properties of Rice and the Response of Gas Exchange to Water Stress1

    E-Print Network [OSTI]

    Stiller, Volker

    Hydraulic Properties of Rice and the Response of Gas Exchange to Water Stress1 Volker Stiller*, H.R.L.) We investigated the role of xylem cavitation, plant hydraulic conductance, and root pressure-specific photosynthetic rate, leaf diffusive conductance, and soil-leaf hydraulic conductance that were associated

  12. A Model-Based Impedance Control Scheme for High-Performance Hydraulic Joints

    E-Print Network [OSTI]

    Papadopoulos, Evangelos

    A Model-Based Impedance Control Scheme for High-Performance Hydraulic Joints Glen Bilodeau1, Greece Abstract Impedance control of a hydraulic servoactuator joint system is discussed in this paper individually. Due to nonlinear properties of hydraulic actuators, impedance control is difficult. The control

  13. Self-similar solutions for a fractional thin film equation governing hydraulic fractures

    E-Print Network [OSTI]

    Boyer, Edmond

    Self-similar solutions for a fractional thin film equation governing hydraulic fractures C. Imbert equation governing hydraulic fractures are constructed. One of the boundary con- ditions, which accounts, 35R11, 35C06 Keywords: Hydraulic fractures, higher order equation, thin films, fractional Laplacian

  14. Hydraulic Habitat Model Comparison_12_03_09 Desiree Tullos and Beth Copeland

    E-Print Network [OSTI]

    Tullos, Desiree

    Hydraulic Habitat Model Comparison_12_03_09 Desiree Tullos and Beth Copeland Review of Hydraulic;Hydraulic Habitat Model Comparison_12_03_09 Desiree Tullos and Beth Copeland Name PHABSIM Spatial scale and Observations on Flow Determination in New Zealand Regulated Streams: Advances in Ecology. Plenum Press, New

  15. Biorheology 44 (2007) 303317 303 The hydraulic conductivity of MatrigelTM

    E-Print Network [OSTI]

    Ottino, Julio M.

    2007-01-01T23:59:59.000Z

    Biorheology 44 (2007) 303­317 303 IOS Press The hydraulic conductivity of MatrigelTM William J. Mc the specific hydraulic conductivity (K) of MatrigelTM at 1% and 2% concentrations as a function of perfusion to determining the hydraulic conductivity of these membranes. The major components of MatrigelTM are laminin

  16. Downstream Hydraulic Geometry of Alluvial Channels Jong-Seok Lee, A.M.ASCE1

    E-Print Network [OSTI]

    Julien, Pierre Y.

    Downstream Hydraulic Geometry of Alluvial Channels Jong-Seok Lee, A.M.ASCE1 ; and Pierre Y. Julien. A larger database for the downstream hydraulic geometry of alluvial channels is examined through with meandering to braided planform geometry. The five parameters describing downstream hydraulic geometry are

  17. Cartesian Cut Cell Two-Fluid Solver for Hydraulic Flow Problems

    E-Print Network [OSTI]

    Ingram, David

    Cartesian Cut Cell Two-Fluid Solver for Hydraulic Flow Problems L. Qian1 ; D. M. Causon2 ; D. M. Ingram3 ; and C. G. Mingham4 Abstract: A two-fluid solver which can be applied to a variety of hydraulic with a sloping beach is also calculated to demonstrate the applicability of the method to real hydraulic problems

  18. Calibration of hydraulic and tracer tests in fractured media

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Calibration of hydraulic and tracer tests in fractured media represented by a DFN Model L. D. Donado, X. Sanchez-Vila, E. Ruiz* & F. J. Elorza** * Enviros Spain S.L. ** UPM #12;Fractured Media Water flows through fractures (matrix basically impervious ­ though relevant to transport) Fractures at all

  19. Scanning electron microscopy imaging of hydraulic cement microstructure

    E-Print Network [OSTI]

    Bentz, Dale P.

    Scanning electron microscopy imaging of hydraulic cement microstructure by Paul Stutzman Building Reprinted from Cement and Concrete Composites, Vol. 26, No. 8, 957-966 pp., November 2004. NOTE: This paper;Available online at www.sciencedirect.com SCIENCE@OIRECT@ Cement & Concrete CompositesELSEVIER Cement

  20. Institute of Hydraulic Engineering Department of Hydrology and Geohydrology

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    Institute of Hydraulic Engineering Department of Hydrology and Geohydrology Prof. Dr. rer. nat. Dr Measurements with Hydrologic Data H. Kindt 1, J. Riegger 1, A. Bárdossy 1, B. Devaraju 2 and N. Sneeuw 2 henry pattern for which storage changes can be constrained within the limits of hydrological data uncertainty. 2

  1. PENN STATE and "GREEN" HYDRAULIC FLUIDS A Fact Sheet

    E-Print Network [OSTI]

    Lee, Dongwon

    complicated and involve motors, actuators, gear, vane, and piston pumps to convert hydraulic power into useful lubricate, transfer heat, and be compatible with other materials such as gaskets, seals, and metal several decades will be declining, while alternative sources of fuels and lubricants increase. The U

  2. GEOL440, GEOL524 Sedimentary Geology: Hydraulic Fracturing Seminar

    E-Print Network [OSTI]

    Nickrent, Daniel L.

    -directed seminar class in which we will investigate the issues surrounding hydraulic fracturing (fracking of fracking, Illinois law, and the economic, environmental and political issues involved in this petroleum on the state of the science of fracking. Course Objectives Upon completion of this course, students

  3. Potential Contaminant Pathways from Hydraulically Fractured Shale to Aquifers

    E-Print Network [OSTI]

    that fracking the shale could reduce that transport time to tens or hundreds of years. Conductive faults to reach a new equilibrium reflecting the significant changes caused by fracking the shale, which could for development. Hydraulic fracturing (fracking, the industry term for the operation; Kramer 2011) loosens

  4. HYDRAULIC FRACTURE MODEL SENSITIVITY ANALYSES OF MASSIVELY STACKED LENTICULAR RESERVOIRS

    E-Print Network [OSTI]

    and 50% of the total cost may be due to the well stimulation treatment. Therefore, there is a need (MWX) site. A geologic characterization of the Mesaverde group established that the production. In common with most tight gas reservoirs, hydraulic stimulation is required to interconnect the dual

  5. Water Use for Hydraulic Fracturing: A Texas Sized Problem?

    E-Print Network [OSTI]

    LeClere, David

    The state of Texas could face a 2.7 trillion gallon shortfall of water by 2060. Hydraulic fracturing (HF) requires large amounts of water for each well. Tax incentives should be offered to companies that substitute brackish groundwater for fresh...

  6. Proportional and Proportional-Integral Controllers for a Nonlinear Hydraulic

    E-Print Network [OSTI]

    De Persis, Claudio

    in a nonlinear hydraulic network of a reduced-size yet meaningful district heating system with two end correspondingly the controllers. In this paper we focus on one of these case studies, a district heating system to the system. Presently district heating systems are designed to meet the needs of a given number of end users

  7. Disturbance Control of the Hydraulic Brake in a Wind Turbine

    E-Print Network [OSTI]

    Yang, Zhenyu

    Disturbance Control of the Hydraulic Brake in a Wind Turbine Frank Jepsen, Anders Søborg brake in a wind turbine. Brake torque is determined by friction coefficient and clamp force; the latter brake is one1 of the two independent brake systems in a wind turbine. As a consequence of the gearing

  8. HYDRAULIC AND PHYSICAL PROPERTIES OF SALTSTONE GROUTS AND VAULT CONCRETES

    SciTech Connect (OSTI)

    Dixon, K; John Harbour, J; Mark Phifer, M

    2008-11-25T23:59:59.000Z

    The Saltstone Disposal Facility (SDF), located in the Z-Area of the Savannah River Site (SRS), is used for the disposal of low-level radioactive salt solution. The SDF currently contains two vaults: Vault 1 (6 cells) and Vault 4 (12 cells). Additional disposal cells are currently in the design phase. The individual cells of the saltstone facility are filled with saltstone. Saltstone is produced by mixing the low-level radioactive salt solution, with blast furnace slag, fly ash, and cement (dry premix) to form a dense, micro-porous, monolithic, low-level radioactive waste form. The saltstone is pumped into the disposal cells where it subsequently solidifies. Significant effort has been undertaken to accurately model the movement of water and contaminants through the facility. Key to this effort is an accurate understanding of the hydraulic and physical properties of the solidified saltstone. To date, limited testing has been conducted to characterize the saltstone. The primary focus of this task was to estimate the hydraulic and physical properties of three types of saltstone and two vault concretes. The saltstone formulations included saltstone premix batched with (1) Deliquification, Dissolution, and Adjustment (DDA) salt simulant (w/pm 0.60), (2) Actinide Removal Process (ARP)/Modular Caustic Side Solvent Extraction Unit (MCU) salt simulant (w/pm 0.60), and (3) Salt Waste Processing Facility (SWPF) salt simulant (w/pm 0.60). The vault concrete formulations tested included the Vault 1/4 concrete and two variations of the Vault 2 concrete (Mix 1 and Mix 2). Wet properties measured for the saltstone formulations included yield stress, plastic viscosity, wet unit weight, bleed water volume, gel time, set time, and heat of hydration. Hydraulic and physical properties measured on the cured saltstone and concrete samples included saturated hydraulic conductivity, moisture retention, compressive strength, porosity, particle density, and dry bulk density. These properties were determined following a minimum 28 day curing period. Additional testing of the three saltstone formulations was conducted following a minimum 90 day curing period. The compressive strength of each saltstone and concrete material was measured at approximately 14, 28, 56, and 90 days. Recommended hydraulic property values for each saltstone grout and the vault concretes are provided. The hydraulic properties provided for each material include the saturated hydraulic conductivity, dry bulk density, particle density, and porosity. In addition, water retention data are presented for each material along with the van Genuchten transport parameters as determined using the RETC code.

  9. National Renewable Energy Laboratory

    E-Print Network [OSTI]

    National Renewable Energy Laboratory Innovation for Our Energy Future ponsorship Format Reversed Color:White rtical Format Reversed-A ertical Format Reversed-B National Renewable Energy Laboratory National Renewable Energy Laboratory Innovation for Our Energy Future National Renewable Energy Laboratory

  10. INVESTIGATION OF EFFICIENCY IMPROVEMENTS DURING CO2 INJECTION IN HYDRAULICALLY AND NATURALLY FRACTURED RESERVOIRS

    SciTech Connect (OSTI)

    David S. Schechter

    2004-10-10T23:59:59.000Z

    This report describes the work performed during the third year of the project, ''Investigating of Efficiency Improvements during CO{sub 2} Injection in Hydraulically and Naturally Fractured Reservoirs.'' The objective of this project is to perform unique laboratory experiments with artificial fractured cores (AFCs) and X-ray CT to examine the physical mechanisms of bypassing in HFR and NFR that eventually result in more efficient CO{sub 2} flooding in heterogeneous or fracture-dominated reservoirs. To achieve this objective, in this period we concentrated our effort on modeling fluid flow through rough fractures and investigating the grid orientation effect in rectangular grid blocks particularly at high mobility ratio as our precursor to use a compositional simulator. We are developing a robust simulator using Voronoi grids to accurately represent natural and induced fractures. We are also verifying the accuracy of the simulation using scaled laboratory experiments to provide a benchmark for our simulation technique. No such simulator currently exists so this capability will represent a major breakthrough in simulation of gas injection in fractured systems. The following sections outline the results that appear in this report.

  11. A model of the large hydraulic gradient at Yucca Mountain, Nevada Test Site, based on hydraulic conductivity contrasts between Cenozoic and Paleozoic rocks

    E-Print Network [OSTI]

    Strom, Eric William

    1993-01-01T23:59:59.000Z

    A MODEL OF THE LARGE HYDRAULIC GRADIENT AT YUCCA MOUNTAIN, NEVADA TEST SITE, BASED ON HYDRAULIC CONDUCTIVITY CONTRASTS BETWEEN CENOZOIC AND PALEOZOIC ROCKS A Thesis ERIC WILLIAM STROM Submitted to the Offic of Graduate Studies of Texas A.... 4m W&~~ &&go~'~o~~i gp ??g Y, ) 4r y. odtli' ~ 6. A MODEL OF THE LARGE HYDRAULIC GRADIENT AT YUCCA MOUNTAIN, NEVADA TEST SITE, BASED ON HYDRAULIC CONDUCTIVITY CONTRASTS BETWEEN CENOZOIC AND PALEOZOIC ROCKS A Thesis ERIC WILLIAM STROM...

  12. Prediction of effects of hydraulic fracturing using reservoir and well flow simulation

    SciTech Connect (OSTI)

    Mineyuki Hanano; Tayuki Kondo

    1992-01-01T23:59:59.000Z

    This paper presents a method to predict and evaluate effects of hydraulic fracturing jobs by using reservoir and well flow numerical simulation. The concept of the method i5 that steam production rate at the operating well head pressure is predicted with different fracture conditions which would be attained by the hydraulic fracturing jobs. Then, the effects of the hydraulic fracturing is evaluated by comparing the predicted steam production rate and that before the hydraulic fracturing. This course of analysis will suggest how large fracture should be created by the fracturing job to attain large enough increase in steam production at the operating condition and the best scheme of the hydraulic fracturing job.

  13. Sandia National Laboratories: Sandia National Laboratories

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

    in Hosted by Sandia National Laboratories and the Electric Power Research Institute (EPRI) Inverter reliability drives project life cycle costs and plant performance. This...

  14. Argonne National Laboratory | Argonne National Laboratory

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

    Argonne National Laboratory Slip sliding away Graphene and diamonds prove a slippery combination Read More ACT-SO winners Argonne mentors students for the next generation of...

  15. Materials Design Laboratory | Argonne National Laboratory

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

    Design Laboratory, scheduled for completion in FY 2020, is designed to meet U.S. Green Building Council Leadership in Energy and Environmental Design (LEED) Gold...

  16. FY 1993 progress report on the ANS thermal-hydraulic test loop operation and results

    SciTech Connect (OSTI)

    Siman-Tov, M.; Felde, D.K.; Farquharson, G. [and others

    1994-07-01T23:59:59.000Z

    The Thermal-Hydraulic Test Loop (THTL) is an experimental facility constructed to support the development of the Advanced Neutron Source Reactor (ANSR) at Oak Ridge National Laboratory (ORNL). Highly subcooled heavy-water coolant flows vertically upward at a very high mass flux of almost 27 MG/m{sup 2}-s. In a parallel fuel plate configuration as in the ANSR, the flow is subject to a potential excursive static-flow instability that can very rapidly lead to flow starvation and departure from nucleate boiling (DNB) in the ``hot channel``. The current correlations and experimental data bases for flow excursion (FE) and critical heat flux (CHF) seldom evaluate the specific combination of ANSR operating parameters. The THTL facility was designed and built to provide known thermal-hydraulic (T/H) conditions for a simulated full-length coolant subchannel of the ANS reactor core, thus facilitating experimental determination of FE and CHF thermal limits under expected ANSR T/H conditions. A series of FE tests with water flowing vertically upward was completed over a nominal heat flux range of 6 to 17 MW/m{sup 2}, a mass flux range of 8 to 28 Mg/m{sup 2}-s, an exit pressure range of 1.4 to 2.1 MPa, and an inlet temperature range of 40 to 50 C. FE experiments were also conducted using as ``soft`` a system as possible to secure a true FE phenomena (actual secondary burnout). True DNB experiments under similar conditions were also conducted. To the author`s knowledge, no other FE data have been reported in the literature to date that dover such a combination of conditions of high mass flux, high heat flux, and moderately high pressure.

  17. Transfer of Physical and Hydraulic Properties Databases to the Hanford Environmental Information System - PNNL Remediation Decision Support Project, Task 1, Activity 6

    SciTech Connect (OSTI)

    Rockhold, Mark L.; Middleton, Lisa A.

    2009-03-31T23:59:59.000Z

    This report documents the requirements for transferring physical and hydraulic property data compiled by PNNL into the Hanford Environmental Information System (HEIS). The Remediation Decision Support (RDS) Project is managed by Pacific Northwest National Laboratory (PNNL) to support Hanford Site waste management and remedial action decisions by the U.S. Department of Energy and one of their current site contractors - CH2M-Hill Plateau Remediation Company (CHPRC). The objective of Task 1, Activity 6 of the RDS project is to compile all available physical and hydraulic property data for sediments from the Hanford Site, to port these data into the Hanford Environmental Information System (HEIS), and to make the data web-accessible to anyone on the Hanford Local Area Network via the so-called Virtual Library.1 These physical and hydraulic property data are used to estimate parameters for analytical and numerical flow and transport models that are used for site risk assessments and evaluation of remedial action alternatives. In past years efforts were made by RDS project staff to compile all available physical and hydraulic property data for Hanford sediments and to transfer these data into SoilVision{reg_sign}, a commercial geotechnical software package designed for storing, analyzing, and manipulating soils data. Although SoilVision{reg_sign} has proven to be useful, its access and use restrictions have been recognized as a limitation to the effective use of the physical and hydraulic property databases by the broader group of potential users involved in Hanford waste site issues. In order to make these data more widely available and useable, a decision was made to port them to HEIS and to make them web-accessible via a Virtual Library module. In FY08 the original objectives of this activity on the RDS project were to: (1) ensure traceability and defensibility of all physical and hydraulic property data currently residing in the SoilVision{reg_sign} database maintained by PNNL, (2) transfer the physical and hydraulic property data from the Microsoft Access database files used by SoilVision{reg_sign} into HEIS, which is currently being maintained by CHRPC, (3) develop a Virtual Library module for accessing these data from HEIS, and (4) write a User's Manual for the Virtual Library module. The intent of these activities is to make the available physical and hydraulic property data more readily accessible and useable by technical staff and operable unit managers involved in waste site assessments and remedial action decisions for Hanford. In FY08 communications were established between PNNL and staff from Fluor-Hanford Co. (who formerly managed HEIS) to outline the design of a Virtual Library module that could be used to access the physical and hydraulic property data that are to be transferred into HEIS. Data dictionaries used by SoilVision{reg_sign} were also provided to Fluor-Hanford personnel (who are now with CHPRC). During ongoing work to ensure traceability and defensibility of all physical and hydraulic property data that currently reside in the SoilVision{reg_sign} database, it was recognized that further work would be required in this effort before the data were actually ported into HEIS. Therefore work on the Virtual Library module development and an accompanying User's Guide was deferred until an unspecified later date. In FY09 efforts have continued to verify the traceability and defensibility of the physical and hydraulic property datasets that are currently being maintained by PNNL. Although this is a work in progress, several of these datasets should be ready for transfer to HEIS in the very near future. This document outlines a plan for the migration of these datasets into HEIS.

  18. Field-Derived Hydraulic Properties for Perched-Water Aquifer Wells 299-E33-350 and 299-E33-351, Hanford Site B-Complex Area

    SciTech Connect (OSTI)

    Newcomer, Darrell R.

    2014-07-01T23:59:59.000Z

    During February and March 2014, Pacific Northwest National Laboratory conducted hydraulic (slug) tests at 200-DV-1 Operable Unit wells 299-E33-350 (C8914) and 299-E33-351 (C8915) as part of B-Complex Area Perched-Water characterization activities at the Hanford Site 200-East Area. During the construction/completion phase of each well, two overlapping depth intervals were tested within the unconfined perched-water aquifer contained in the silty-sand subunit of the Cold Creek Unit. The purpose of the slug-test characterization was to provide estimates of transmissivity and hydraulic conductivity for the perched-water aquifer at these selected well locations.

  19. Transportation Decision Support Systems Oak Ridge National Laboratory

    E-Print Network [OSTI]

    Transportation Decision Support Systems Oak Ridge National Laboratory managed by UT-Battelle, LLC Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle and implementation of automated transportation decision support models for the scheduling and routing of cargo

  20. Radiochemical Processing Laboratory Pacific Northwest National

    E-Print Network [OSTI]

    of Energy Office of Science national laboratory where interdisciplinary teams advance science and technology and deliver solutions to America's most intractable problems in energy, the environment, and national security, algorithms, and software that can be efficiently used on the next generation of supercomputers with 1000-fold

  1. Reply: Davies et al. (2012), Hydraulic fractures: How far can they go? Richard J. Davies a,*, Gillian R. Foulger a

    E-Print Network [OSTI]

    Foulger, G. R.

    2012-01-01T23:59:59.000Z

    propagating stimulated hydraulic fractures, gener- ated by fracking operations for gas and oil exploitation

  2. Galactic Neighborhood and Laboratory Astrophysics

    E-Print Network [OSTI]

    Wang, Q Daniel

    2011-01-01T23:59:59.000Z

    The galactic neighborhood, extending from the Milky Way to redshifts of about 0.1, is our unique local laboratory for detailed study of galaxies and their interplay with the environment. Such study provides a foundation of knowledge for interpreting observations of more distant galaxies and their environment. The Astro 2010 Science Frontier Galactic Neighborhood Panel identified four key scientific questions: 1) What are the flows of matter and energy in the circumgalactic medium? 2) What controls the mass-energy-chemical cycles within galaxies? 3) What is the fossil record of galaxy assembly from first stars to present? 4) What are the connections between dark and luminous matter? These questions, essential to the understanding of galaxies as interconnected complexes, can be addressed most effectively and/or uniquely in the galactic neighborhood. The panel also highlighted the discovery potential of time-domain astronomy and astrometry with powerful new techniques and facilities to greatly advance our unders...

  3. Hydraulic engine valve actuation system including independent feedback control

    DOE Patents [OSTI]

    Marriott, Craig D

    2013-06-04T23:59:59.000Z

    A hydraulic valve actuation assembly may include a housing, a piston, a supply control valve, a closing control valve, and an opening control valve. The housing may define a first fluid chamber, a second fluid chamber, and a third fluid chamber. The piston may be axially secured to an engine valve and located within the first, second and third fluid chambers. The supply control valve may control a hydraulic fluid supply to the piston. The closing control valve may be located between the supply control valve and the second fluid chamber and may control fluid flow from the second fluid chamber to the supply control valve. The opening control valve may be located between the supply control valve and the second fluid chamber and may control fluid flow from the supply control valve to the second fluid chamber.

  4. Thermal Hydraulic Analysis of HTGR Coupled with Hydrogen Plant

    SciTech Connect (OSTI)

    Chang Oh; Cliff Davis; Robert Barner; Paul Pickard

    2006-06-01T23:59:59.000Z

    The US Department of Energy is investigating the use of high-temperature gas-cooled reactors (HTGR) to produce electricity and hydrogen. Although the hydrogen production processes using the nuclear energy are in an early stage of development, coupling hydrogen plant to HTGR requires both efficient heat transfer and adequate separation of the facilities to assure that off-normal events in the production facility do not impact the nuclear plant. In anticipation of the design, development and procurement of an advanced power conversion system for HTGR, this study was initiated to identify the major design and technology options and their tradeoffs in the evaluation of power conversion system (PCS) coupled to hydrogen plant. In this study, we investigated a number of design configurations and performed thermal hydraulic analyses using various working fluids and various conditions. This paper includes a portion of thermal hydraulic results based on a direct cycle and a parallel intermediate heat exchanger (IHX) configuration option.

  5. A fast direct numerical simulation method for characterising hydraulic roughness

    E-Print Network [OSTI]

    Chung, Daniel; MacDonald, Michael; Hutchins, Nicholas; Ooi, Andrew

    2015-01-01T23:59:59.000Z

    We describe a fast direct numerical simulation (DNS) method that promises to directly characterise the hydraulic roughness of any given rough surface, from the hydraulically smooth to the fully rough regime. The method circumvents the unfavourable computational cost associated with simulating high-Reynolds-number flows by employing minimal-span channels (Jimenez & Moin 1991). Proof-of-concept simulations demonstrate that flows in minimal-span channels are sufficient for capturing the downward velocity shift, that is, the Hama roughness function, predicted by flows in full-span channels. We consider two sets of simulations, first with modelled roughness imposed by body forces, and second with explicit roughness described by roughness-conforming grids. Owing to the minimal cost, we are able to conduct DNSs with increasing roughness Reynolds numbers while maintaining a fixed blockage ratio, as is typical in full-scale applications. The present method promises a practical, fast and accurate tool for character...

  6. Hydraulic impulse generator and frequency sweep mechanism for borehole applications

    DOE Patents [OSTI]

    Kolle, Jack J.; Marvin, Mark H.; Theimer, Kenneth J.

    2006-11-21T23:59:59.000Z

    This invention discloses a valve that generates a hydraulic negative pressure pulse and a frequency modulator for the creation of a powerful, broadband swept impulse seismic signal at the drill bit during drilling operations. The signal can be received at monitoring points on the surface or underground locations using geophones. The time required for the seismic signal to travel from the source to the receiver directly and via reflections is used to calculate seismic velocity and other formation properties near the source and between the source and receiver. This information can be used for vertical seismic profiling of formations drilled, to check the location of the bit, or to detect the presence of abnormal pore pressure ahead of the bit. The hydraulic negative pressure pulse can also be used to enhance drilling and production of wells.

  7. Calcium and sodium bentonite for hydraulic containment applications

    SciTech Connect (OSTI)

    Gleason, M.H. [GeoSyntec Consultants, Columbia, MD (United States); Daniel, D.E. [Univ. of Illinois, Urbana, IL (United States). Dept. of Civil Engineering; Eykholt, G.R. [Univ. of Wisconsin, Madison, WI (United States). Dept. of Civil Engineering

    1997-05-01T23:59:59.000Z

    The hydraulic conductivity of calcium and sodium bentonites was investigated for sand-bentonite mixtures, a thin bentonite layer simulating a geosynthetic clay liner (GCL), and bentonite-cement mixtures simulating backfill for a vertical cutoff wall. The permeant liquids were tap water and distilled water containing 0.25 M calcium chloride. In general, the hydraulic performance of calcium bentonite was not significantly better than the performance of sodium bentonite for either the clay-amended sand or the GCL application, and was substantially worse than the performance of sodium bentonite in the bentonite-cement mixture. A drained angle of internal friction of 21{degree} was measured for calcium bentonite, compared to 10{degree} for sodium bentonite. Except for a larger drained shear strength, no advantage of calcium bentonite over sodium bentonite could be identified from the results of this study.

  8. An investigation of productivity increases from hydraulic fracturing treatments

    E-Print Network [OSTI]

    Boriskie, Robert Joe

    1963-01-01T23:59:59.000Z

    AN INVESTIGATION OF PRODUCTIVITY INCREASES FROM HYDRAULIC FRACTURING TREATMENTS A Thesis b7 Robert Joe Boriskie Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements... Head of Department) August, 1963 1. ABSTRACT 2. INTRODUCTION. TABLE OF CONTENTS PRgB 3. THEORY AND PROCEDURE. 4. DISCUSSION OF RESULTS. . 5. CONCLUSIONS. 6. ACKNOWLEDGEMENT. 7. APPENDIX. 8. REFERENCES. 18 19 20 32 LIST OF FIGURES...

  9. Low permeability gas reservoir production using large hydraulic fractures

    E-Print Network [OSTI]

    Holditch, Stephen A

    1970-01-01T23:59:59.000Z

    extending up to three thousand feet from the producing well. Also, a model simulating a nuclear cavity was designed. This model simulated a well containing an eighty foot radius cavity with a fractured zone of one hundred times the reservoir permeability... of each system was prepared. The results of this study showed that all fractures of greater than one thousand foot radius had greater productivity and greater cumu- lative gas produced than did the nuclear cavity. It appears that large hydraulic...

  10. Hydrology and Hydraulic Properties of a Bedded Evaporite Formation

    SciTech Connect (OSTI)

    BEAUHEIM,RICHARD L.; ROBERTS,RANDALL M.

    2000-11-27T23:59:59.000Z

    The Permian Salado Formation in the Delaware Basin of New Mexico is an extensively studied evaporite deposit because it is the host formation for the Waste Isolation Pilot Plant, a repository for transuranic wastes. Geologic and hydrologic studies of the Salado conducted since the mid-1970's have led to the development of a conceptual model of the hydrogeology of the formation that involves far-field permeability in anhydrite layers and at least some impure halite layers. Pure halite layers and some impure halite layers may not possess an interconnected pore network adequate to provide permeability. Pore pressures are probably very close to lithostatic pressure. In the near field around an excavation, dilation, creep, and shear have created and/or enhanced permeability and decreased pore pressure. Whether flow occurs in the far field under natural gradients or only after some threshold gradient is reached is unknown. If far-field flow does occur, mean pore velocities are probably on the order of a meter per hundreds of thousands to tens of millions of years. Flow dimensions inferred from most hydraulic-test responses are subradial, which is believed to reflect channeling of flow through fracture networks, or portions of fractures, that occupy a diminishing proportion of the radially available space, or through percolation networks that are not ''saturated'' (fully interconnected). This is probably related to the directional nature of the permeability created or enhanced by excavation effects. Inferred values of permeability cannot be separated from their associated flow dimensions. Therefore, numerical models of flow and transport should include heterogeneity that is structured to provide the same flow dimensions as are observed in hydraulic tests. Modeling of the Salado Formation around the WIPP repository should also include coupling between hydraulic properties and the evolving stress field because hydraulic properties change as the stress field changes.

  11. The use of broadband microseisms for hydraulic fracture mapping

    SciTech Connect (OSTI)

    Sleefe, G.E.; Warpinski, N.R.; Engler, B.P.

    1993-08-01T23:59:59.000Z

    When a hydrocarbon reservoir is subjected to a hydraulic fracture treatment, the cracking and slipping of the formation results in the emission of seismic energy. The objective of this study was to determine the advantages of using broadband (100 Hz to 1500 M) microseismic emissions to map a hydraulic fracture treatment. A hydraulic fracture experiment was performed in the Piceance Basin of Western Colorado to induce and record broadband microseismic events. The formation was subjected to four processes; break-down/ballout, step-rate test, KCL mini-fracture, and linear-gel mini-fracture. Broadband microseisms were successfully recorded by a novel three-component wall-locked seismic accelerometer package, placed in an observation well 211 ft (64 m) offset from the treatment well. During the two hours of formation treatment, more than 1200 significant microseismic events were observed. The occurrences of the events strongly correlated with the injection bore-bole pressures during the treatments. Using both hodogram analysis and time of arrival information, estimates of the origination point of the seismic events were computed. A map of the event locations yielded a fracture orientation estimate consistent with the known orientation of the field in the formation. This paper describes the technique for acquiring and analyzing broadband microseismic events and illustrate how the new broadband approach can enhance signal detectability and event location resolution.

  12. Pacific Northwest National Laboratory

    E-Print Network [OSTI]

    Pacific Northwest National Laboratory Operated by Battelle for the U.S. Department of Energy Northwest National Laboratory (PNNL) operated by Battelle Memorial Institute. Battelle has a unique contract

  13. Argonne National Laboratory's Nondestructive

    E-Print Network [OSTI]

    Kemner, Ken

    Argonne National Laboratory's Nondestructive Evaluation Technologies NDE #12;Over45yearsexperienceinNondestructiveEvaluation... Argonne National Laboratory's world-renowned researchers have a proven the safe operationof advanced nuclear reactors. Argonne's World-Class Nondestructive Evaluation

  14. Mentoring | Argonne National Laboratory

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

    As one of the largest laboratories in the nation for science and engineering research, Argonne National Laboratory is home to some of the most prolific and well-renowned scientists...

  15. Naval Civil Engineering Laboratory

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

    Naval Civil Engineering Laboratory Personnel from the Power Systems Department have participated in numerous distribution equipment research, development, demonstration, testing,...

  16. Employment at National Laboratories

    SciTech Connect (OSTI)

    E. S. Peterson; C. A. Allen

    2007-04-01T23:59:59.000Z

    Scientists enter the National Laboratory System for many different reasons. For some, faculty positions are scarce, so they take staff-scientist position at national laboratories (i.e. Pacific Northwest, Idaho, Los Alamos, and Brookhaven). Many plan to work at the National Laboratory for 5 to 7 years and then seek an academic post. For many (these authors included), before they know it it’s 15 or 20 years later and they never seriously considered leaving the laboratory system.

  17. Sandia National Laboratories: Photovoltaic

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

    in Computational Modeling & Simulation, Energy, Facilities, News, News & Events, Photovoltaic, Photovoltaic Systems Evaluation Laboratory (PSEL), Renewable Energy, Solar, Solar...

  18. Downloads | Argonne National Laboratory

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

    batteries --Electricity transmission --Smart Grid -Energy economy --Energy policy Environment -Biology --Computational biology ---Bioinformatics ---Molecular dynamics...

  19. LABORATORY NEW HIRE NOTICE: LABORATORY DELAYED OPENING OR CLOSURE...

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

    LABORATORY NEW HIRE NOTICE: LABORATORY DELAYED OPENING OR CLOSURE DUE TO INCLEAMENT WEATHER During the winter months, the Los Alamos National Laboratory (LANL) may at times...

  20. EIS-0028: Lawrence Livermore National Laboratory and Sandia National Laboratories- Livermore Sites, Livermore, CA

    Broader source: Energy.gov [DOE]

    The statement assesses the potential impacts associated with current operation of the Lawrence Livermore National Laboratory and Sandia National Laboratories , Livermore, adjacent sites. This includes the impacts from postulated accidents associated with the activities. Various effluents including radioactive ones are released to the environment. However, a continuing comprehensive monitoring program is carried out to assist in the control of hazardous effluents. Alternatives considered to current operation of the laboratories include: (1) shutdown and decommissioning, (2) total or partial relocation, (3) scaling down those operations having greatest impact , and (4) wider use of alternate technologies having reduced impact .

  1. Routine environmental audit of Ames Laboratory, Ames, Iowa

    SciTech Connect (OSTI)

    NONE

    1994-09-01T23:59:59.000Z

    This document contains the findings identified during the routine environmental audit of Ames Laboratory, Ames, Iowa, conducted September 12--23, 1994. The audit included a review of all Ames Laboratory operations and facilities supporting DOE-sponsored activities. The audit`s objective is to advise the Secretary of Energy, through the Assistant Secretary for Environment, Safety and Health, as to the adequacy of the environmental protection programs established at Ames Laboratory to ensure the protection of the environment, and compliance with Federal, state, and DOE requirements.

  2. Method and tool for contracting tubular members by electro-hydraulic forming before hydroforming

    DOE Patents [OSTI]

    Golovashchenko, Sergey Fedorovich (Beverly Hills, MI)

    2011-03-15T23:59:59.000Z

    A tubular preform is contracted in an electro-hydraulic forming operation. The tubular preform is wrapped with one or more coils of wire and placed in a chamber of an electro-hydraulic forming tool. The electro-hydraulic forming tool is discharged to form a compressed area on a portion of the tube. The tube is then placed in a hydroforming tool that expands the tubular preform to form a part.

  3. Laboratory manual for salt-mixing test in 37- and 217-pin bundles. [LMFBR

    SciTech Connect (OSTI)

    Chan, Y.N.; Todreas, N.E.

    1980-08-01T23:59:59.000Z

    This laboratory manual deals with the procedure employed during salt tracer experiments used in evaluating the hydraulic characteristics of a rod bundle. A description of the standard equipment used is given together with the details of manufacture of probes used for detecting the salt concentration. Details of the bundle construction have been excluded as they are availble in the reference cited. An attempt has been made to point out potential trouble areas and procedures.

  4. A decision-analytic approach to predict state regulation of hydraulic fracturing

    E-Print Network [OSTI]

    Linkov, Igor

    Background: The development of horizontal drilling and hydraulic fracturing methods has dramatically increased the potential for the extraction of previously unrecoverable natural gas. Nonetheless, the potential risks and ...

  5. Brookhaven National Laboratory site environmental report for calendar year 1995

    SciTech Connect (OSTI)

    Naidu, J.R.; Paquette, D.E.; Schroeder, G.L. [eds.] [and others

    1996-12-01T23:59:59.000Z

    This report documents the results of the Environmental Monitoring Program at Brookhaven National Laboratory and summarizes information about environmental compliance for 1995. To evaluate the effect of Brookhaven National Laboratory`s operations on the local environment, measurements of direct radiation, and of a variety of radionuclides and chemical compounds in the ambient air, soil, sewage effluent, surface water, groundwater, fauna, and vegetation were made at the Brookhaven National Laboratory site and at adjacent sites. The report also evaluates the Laboratory`s compliance with all applicable guides, standards, and limits for radiological and nonradiological emissions and effluents to the environment. Areas of known contamination are subject to Remedial Investigation/Feasibility Studies under the Inter Agency Agreement established by the Department of Energy, Environmental Protection Agency and the New York Department of Environmental Conservation. Except for identified areas of soil and groundwater contamination, the environmental monitoring data has continued to demonstrate that compliance was achieved with the applicable environmental laws and regulations governing emission and discharge of materials to the environment. Also, the data show that the environmental impacts at Brookhaven National Laboratory are minimal and pose no threat to the public nor to the environment. This report meets the requirements of Department of Energy Orders 5484.1, Environmental Protection, Safety, and Health Protection Information reporting requirements and 5400.1, General Environmental Protection Programs.

  6. COMBUSTION RESEARCH Chapter from the Energy and Environment Division Annual Report 1980

    E-Print Network [OSTI]

    Authors, Various

    2013-01-01T23:59:59.000Z

    the post- combustion environment of prototype oil fuels. Thein a laboratory combustion tunnel fired with light fuel oilsfuel oil. The tem- perature of the products of combustion

  7. Capsule injection system for a hydraulic capsule pipelining system

    DOE Patents [OSTI]

    Liu, Henry (Columbia, MO)

    1982-01-01T23:59:59.000Z

    An injection system for injecting capsules into a hydraulic capsule pipelining system, the pipelining system comprising a pipeline adapted for flow of a carrier liquid therethrough, and capsules adapted to be transported through the pipeline by the carrier liquid flowing through the pipeline. The injection system comprises a reservoir of carrier liquid, the pipeline extending within the reservoir and extending downstream out of the reservoir, and a magazine in the reservoir for holding capsules in a series, one above another, for injection into the pipeline in the reservoir. The magazine has a lower end in communication with the pipeline in the reservoir for delivery of capsules from the magazine into the pipeline.

  8. On modeling hydraulic fracture in proper variables: stiffness, accuracy, sensitivity

    E-Print Network [OSTI]

    Mishuris, Gennady; Linkov, Alexander

    2012-01-01T23:59:59.000Z

    The problem of hydraulic fracture propagation is considered by using its recently suggested modified formulation in terms of the particle velocity, the opening in the proper degree, appropriate spatial coordinates and $\\varepsilon$-regularization. We show that the formulation may serve for significant increasing the efficiency of numerical tracing the fracture propagation. Its advantages are illustrated by re-visiting the Nordgren problem. It is shown that the modified formulation facilitates (i) possibility to have various stiffness of differential equations resulting after spatial discretization, (ii) obtaining highly accurate and stable numerical results with moderate computational effort, and (iii) sensitivity analysis. The exposition is extensively illustrated by numerical examples.

  9. Linear hydraulic drive system for a Stirling engine

    DOE Patents [OSTI]

    Walsh, Michael M. (Schenectady, NY)

    1984-02-21T23:59:59.000Z

    A hydraulic drive system operating from the periodic pressure wave produced by a Stirling engine along a first axis thereof and effecting transfer of power from the Stirling engine to a load apparatus therefor and wherein the movable, or working member of the load apparatus is reciprocatingly driven along an axis substantially at right angles to the first axis to achieve an arrangement of a Stirling engine and load apparatus assembly which is much shorter and the components of the load apparatus more readily accessible.

  10. Science | Argonne National Laboratory

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

    Science Computing, Environment & Life Sciences Energy & Global Security Photon Sciences Physical Sciences & Engineering Energy Frontier Research Centers Institute for Molecular...

  11. Pacific Northwest National Laboratory Institutional Plan FY 2001-2005

    SciTech Connect (OSTI)

    Fisher, Darrell R.; Pearson, Erik W.

    2000-12-29T23:59:59.000Z

    The Pacific Northwest National Laboratory Institutional Plan for FY 2001-2005 sets forth the laboratory's mission, roles, technical capabilities, and laboratory strategic plan. In the plan, major initiatives also are proposed and the transitioning initiatives are discussed. The Programmatic Strategy section details our strategic intent, roles, and research thrusts in each of the U.S. Department of Energy's mission areas. The Operations/Infrastructure Strategic Plan section includes information on the laboratory's human resources; environment, safety, and health management; safeguards and security; site and facilities management; information resources management; managaement procatices and standards; and communications and trust.

  12. Pacific Northwest National Laboratory Institutional Plan FY 2000-2004

    SciTech Connect (OSTI)

    Pearson, Erik W.

    2000-03-01T23:59:59.000Z

    The Pacific Northwest National Laboratory Institutional Plan for FY 2000-2004 sets forth the laboratory's mission, roles, technical capabilities, and laboratory strategic plan. In the plan, major initiatives also are proposed and the transitioning initiatives are discussed. The Programmatic Strategy section details our strategic intent, roles, and research thrusts in each of the U.S. Department of Energy's mission areas. The Operations/Infrastructure Strategic Plan section includes information on the laboratory's human resources; environment, safety, and health management; safeguards and security; site and facilities management; information resources management; management practices and standards; and communications and trust.

  13. Los Alamos National Laboratory

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

    In this issue's cover story, "Rethinking the Unthinkable," Houston T. Hawkins, a retired Air Force colonel and a Laboratory senior fellow, points out that since Vladimir Putin...

  14. Sandia National Laboratories: AMI

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

    Manufacturing Initiative (AMI) is a multiple-year, 3-way collaboration among TPI Composites, Iowa State University, and Sandia National Laboratories. The goal of this...

  15. Sandia National Laboratories: Photovoltaics

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

    2013 Inverter Reliability Workshop On May 31, 2013, in Hosted by Sandia National Laboratories and the Electric Power Research Institute (EPRI) Inverter reliability drives project...

  16. Sandia National Laboratories: photovoltaic

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

    photovoltaic Microsystems Enabled Photovoltaics (MEPV) On April 14, 2011, in About MEPV Flexible MEPV MEPV Publications MEPV Awards Researchers at Sandia National Laboratories are...

  17. News | Argonne National Laboratory

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

    Researchers from Argonne National Laboratory modeled several scenarios to add more solar power to the electric grid, using real-world data from the southwestern power...

  18. Sandia National Laboratories: SPI

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

    Conference, the Department of Energy (DOE), the Electric Power Research Instisute (EPRI), Sandia National Laboratories, ... Last Updated: September 10, 2012 Go To Top ...

  19. nfang | The Ames Laboratory

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

    Ames Laboratory Research Projects: Chemical Analysis of Nanodomains Education: Ph.D., the University of British Columbia, Canada, 2006 B.S. from Xiamen University, China, 1998...

  20. Sandia National Laboratories: Energy

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

    Laboratories on a new concentrated solar power (CSP) installation with thermal energy storage. The CSP storage project combines Areva's modular Compact Linear Fresnel...

  1. Sandia National Laboratories: publications

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

    Laboratories, August 2010. 2009 Adrian R. Chavez, Position Paper: Protecting Process Control Systems against Lifecycle Attacks Using Trust Anchors Sandia National ... Page 1...

  2. Los Alamos National Laboratory

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

    the first results of joint work by scientists from Lawrence Berkeley, Pacific Northwest, Savannah River, and Los Alamos national laboratories at the Savannah River Site to model...

  3. Sandia National Laboratories: Infrastructure

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

    The Center for SCADA Security Assets On August 25, 2011, in Sandia established its SCADA Security Development Laboratory in 1998. Its purpose was to analyze vulnerabilities in...

  4. Sandia National Laboratories: solar

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

    Interactive Tour Operated by Sandia National Laboratories for the U.S. Department of Energy (DOE), the National Solar Thermal Test Facility (NSTTF) is the only test facility...

  5. National Laboratory Photovoltaics Research

    Broader source: Energy.gov [DOE]

    DOE supports photovoltaic (PV) research and development and facilities at its national laboratories to accelerate progress toward achieving the SunShot Initiative's technological and economic...

  6. Sandia National Laboratories: Geothermal

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

    Geothermal Sandia Wins DOE Geothermal Technologies Office Funding Award On December 15, 2014, in Advanced Materials Laboratory, Capabilities, Energy, Facilities, Geothermal,...

  7. Sandia National Laboratories: PV

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

    2014 Sandia Corporation | Questions & Comments | Privacy & Security U.S. Department of Energy National Nuclear Security Administration Sandia National Laboratories is a...

  8. Sandia National Laboratories: HRSAM

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

    and the National Renewable Energy Laboratory (NREL) announce the publication of two new Hydrogen Fueling Infrastructure Research and Station Technology (H2FIRST) reports on...

  9. Sandia National Laboratories: Solar

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

    Testing Center (PV RTC), Photovoltaic Systems Evaluation Laboratory (PSEL), Renewable Energy, Solar, Solar Newsletter, SunShot, Systems Analysis A research team that included...

  10. Sandia National Laboratories: NASA

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

    National Laboratories (partnering with Northrup Grumman Aerospace Systems and the University of Michigan) has developed a solar electric propulsion concept capable of a wide...

  11. Facilities | Argonne National Laboratory

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

    Some of the nation's most powerful and sophisticated facilities for energy research Argonne National Laboratory is home to some of the nation's most powerful and sophisticated...

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    (TDC) Division negotiates and manages license agreements on behalf of UChicago Argonne, LLC, which operates Argonne National Laboratory for the U.S. Department of Energy....

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    Broader source: Energy.gov [DOE]

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    E-Print Network [OSTI]

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    E-Print Network [OSTI]

    Clayton, Thomas F.

    2009-01-01T23:59:59.000Z

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  20. Los Alamos National Laboratory (LANL) Safety Conscious Work Environment

    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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomy andTerms Loan TermsLongLoretta PrencipeLos(SCWE)