Sample records for uni-directional simulated beach

  1. Property:Simulated Beach | 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 YouKizildere I GeothermalPotentialBiopowerSolidGenerationMethod Jump to:This property is setSimulated Beach Jump to:

  2. Variable mode bi-directional and uni-directional computer communication system

    DOE Patents [OSTI]

    Cornett, Frank N.; Jenkins, Philip N.; Bowman, Terrance L.; Placek, Joseph M.; Thorson, Gregory M.

    2004-12-14T23:59:59.000Z

    A variable communication systems comprising a plurality of transceivers and a control circuit connected to the transceivers to configure the transceivers to operate in a bi-directional mode and a uni-directional mode at different times using different transfer methods to transfer data.

  3. Parameter assignment for improved connectivity and security in randomly deployed wireless sensor networks via hybrid omni/uni-directional antennas

    E-Print Network [OSTI]

    Shankar, Sonu

    2009-05-15T23:59:59.000Z

    ,omni-directional antennas have been used for communication in wireless sensor net-works. In this thesis, a hybrid communication model is presented where-in, nodes ina network are capable of both omni-directional and uni-directional communication.The eect of such a model...

  4. Scour of simulated Gulf Coast sand beaches due to wave action in front of sea walls and dune barriers

    E-Print Network [OSTI]

    Chesnutt, Charles Burgess

    1971-01-01T23:59:59.000Z

    for the degree of MASTER OF SCIENCE May 1971 Ma)or Sub)ect: Civil Engineering SCOUR OF SIM(JLATED GULF COAST SAND BEACHES DUE TO WAVE ACTION IN FRONT OF SEA WALLS AND DUNE BARRIERS Q m Q F z A Thesis z m Q C by CHARLES BURGESS CHESNUTT L' m ) m... angle 53 LIST OF FIGURES (CONTINUED) Figure Page 15 Scour depth at the sea wall versus beach slope for constant wave steepness and varying sea wall angle 54 INTRODUCTION The problem of scour in front of sea walls has plagued coastal engineers...

  5. Factors controlling beach changes of a Texas gulf coast beach

    E-Print Network [OSTI]

    Seelig, William Newton

    1973-01-01T23:59:59.000Z

    with recent shoreline retreat rates averaging 30 feet per year. Storms are the primary agents that remove material from the beach, while lost sediments are not replaced because Brazos River sands normally expected to move alongshore are trapped... in the Brazos delta. Hurricanes may free stored deltaic sands carrying major quani ties offshore from beach areas. Beach erosion is further encouraged by decreased sand input to the coast from the Brazos River due to alterations to the river and its drainage...

  6. Approximate Uni-directional Benders Decomposition

    E-Print Network [OSTI]

    C N Burt, N Lipovetzky, A R Pearce, P J Stuckey

    2014-12-01T23:59:59.000Z

    with balancing problems in an electricity network (Piacen- tini et al. 2013) .... uct k that are picked up from market m, and ym be 1 if mar- ket m is visited (and 0 ...

  7. Optimization Online - Approximate Uni-directional Benders ...

    E-Print Network [OSTI]

    Christina N Burt

    2014-11-30T23:59:59.000Z

    Nov 30, 2014 ... Thus, we aim at finding good quality feasible solutions in the first iteration. ... Category 1: Applications -- OR and Management Sciences.

  8. Wisconsin Nuclear Profile - Point Beach Nuclear Plant

    U.S. Energy Information Administration (EIA) Indexed Site

    Point Beach Nuclear Plant" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration...

  9. California Beach Health: Evaluation of Grunion as an Indicator Species

    E-Print Network [OSTI]

    Martin, Karen

    2008-01-01T23:59:59.000Z

    2007 Conference Title: Citizen Science Toolkit ConferenceGrunion Greeters: Citizen Science on the Beach. Authors: M.Grunion Greeters: Citizen Science on the Beach Authors: K.

  10. Better Buildings Challenge & PACE-West Palm Beach | Department...

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

    Overview of Better Buildings Challenge and property assessed clean energy - West Palm Beach. Author: U. S. Department of Energy Better Buildings Challenge & PACE-West Palm Beach...

  11. California Beach Health: Evaluation of Grunion as an Indicator Species

    E-Print Network [OSTI]

    Martin, Karen

    2008-01-01T23:59:59.000Z

    Del Mar beaches” Name of publication: Ventura County Star (newspaper) City: Ventura State: CA Date of publication/Beach” Name of publication: Ventura County Star (newspaper)

  12. MODELING UNDERTOW OVER A BARRED LABORATORY BEACH

    E-Print Network [OSTI]

    Haller, Merrick

    ) models were tested against undertow data obtained in a fixed-bed laboratory beach. The quasi-3D model the capabilities of two models against undertow observations on a fixed-bed laboratory beach. The models are 1 in Proceedings of ICCE 2008, ASCE #12;2 Figure 1: Fixed-bed profile (thick black line), fixed (blue circles

  13. City of Manhattan Beach Community Development

    E-Print Network [OSTI]

    the City of Manhattan Beach adoption of our local more stringent energy efficiency standards. In accordance that the California Energy Commission approve the local energy efficiency standards amendments as attached. PleaseCity of Manhattan Beach Community Development Phone: (310) 802-5500 FAX: (310) 802-5501 TDD: (310

  14. Tar loads on Omani beaches

    SciTech Connect (OSTI)

    Badawy, M.I.; Al-Harthy, F.T. (National Research Center, Cairo (Egypt))

    1991-11-01T23:59:59.000Z

    Owing to Oman's geographic position and long coastal line, the coastal areas of Oman are particularly vulnerable to oil pollution from normal tanker operations, illegal discharges, and accidental spills as well as local sources of oil input. UNEP carried out a survey on the coasts of Oman to determine the major sources of oil pollution and concluded that the major shoreline pollution problems in Oman arose from operational discharges of oil from passing vessels traffic. The oil, because of the high sea and air temperatures in the area, was subjected to relatively high rates of evaporation and photo-oxidation and tended to arrive at the coast as heavy petroleum particulate residues (tar balls). The aim of the present study was to measure the loads of tar balls in Omani coastal areas and to identify the source of oil pollutants on beaches.

  15. La Jolla Children's Pool Beach Management and Water Quality Improvement Project

    E-Print Network [OSTI]

    Elwany, Hany; Flick, Reinhard; Nichols, Jean; Lindquist, Anne-Lise

    1998-01-01T23:59:59.000Z

    POOL BEACH MANAGEMENT AND WATER QUALITY IMPROVEMENT PROJECTPool Beach Management and Water Quality Improvements ProjectPool Beach Management and Water Quality Improvements Project

  16. Cosmology at the Beach Lecture: Anne Green

    SciTech Connect (OSTI)

    Ann Green

    2009-04-21T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.  

  17. Cosmology on the Beach: Kendrick Smith

    ScienceCinema (OSTI)

    George Smoot

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  18. Cosmology on the Beach - George Smoot

    ScienceCinema (OSTI)

    George Smoot

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  19. Cosmology at the Beach Lecture: Anne Green

    ScienceCinema (OSTI)

    Ann Green

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.  

  20. Cosmology at the Beach Lecture: Simon White

    ScienceCinema (OSTI)

    Simon White

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  1. Cosmology at the Beach Lecture: David Hughes

    ScienceCinema (OSTI)

    David Hughes

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  2. Cosmology on the Beach - George Smoot

    SciTech Connect (OSTI)

    George Smoot

    2009-05-06T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  3. MONITORING AND MODELING NEARSHORE DREDGE DISPOSAL FOR INDIRECT BEACH NOURISHMENT, OCEAN BEACH, SAN

    E-Print Network [OSTI]

    MONITORING AND MODELING NEARSHORE DREDGE DISPOSAL FOR INDIRECT BEACH NOURISHMENT, OCEAN BEACH, SAN FRANCISCO Patrick L. Barnard1 , Daniel M. Hanes1 , Jamie Lescinski1 and Edwin Elias2 Nearshore dredge toward the shore, providing evidence that annual dredge disposal at this site could be beneficial over

  4. Cosmology at the Beach Lecture: Wayne Hu

    ScienceCinema (OSTI)

    Wayne Hu

    2010-01-08T23:59:59.000Z

    Wayne Hu lectures on Secondary Anisotropy in the CMB. The lecture is the first in a series of 3 he delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  5. State-Ocean City Beach Erosion Control District (Maryland)

    Broader source: Energy.gov [DOE]

    A Beach Erosion Control District constitutes part of the Ocean City shoreline. Land clearing, construction activity, or the construction or placement of permanent structures within the district is...

  6. Submarine Groundwater and Its Influence on Beach Pollution

    E-Print Network [OSTI]

    Boehm, Alexandria; Payton, Adina

    2007-01-01T23:59:59.000Z

    Submarine Groundwater and Its Influence on Beach Pollutioncounts are linked to groundwater flowing a few feet beneaththe sand. Groundwater discharging to the coast may be as

  7. Wisconsin Nuclear Profile - Point Beach Nuclear Plant

    U.S. Energy Information Administration (EIA) 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5 Tables July 1996 Energy Information Administration Office ofthroughYear JanYearFuel5,266 6,090IndustrialVehicle FuelPoint Beach

  8. Beaches Energy Services | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation in Carbon CaptureAtriaPower SystemsRhodeBayfieldBeaches Energy

  9. Forward-Only Uni-Directional Routing Jorge A. Cobb

    E-Print Network [OSTI]

    Cobb, Jorge Arturo

    , such as limits on battery life, memory, and computing power. Battery life is critical, since nodes are typically battery operated, and have a short battery life. To maximimize battery life, an efficient utilization has a set of network conditions under which it is the best. In this paper, we focus on the proactive

  10. Properties and stability of a Texas barrier beach inlet 

    E-Print Network [OSTI]

    Mason, Curtis

    1971-01-01T23:59:59.000Z

    Profiles A and 8 East Spit Beach Pzofiles C and D West Spit Beach Profiles E and F West Spit Beach Profiles G and H 79 80 81 82 83 36 Brown Cedar Cut Location Chart, 24 October, 1970 . 85 37 Mean Water Level Surface Contours, 24 October, 1970... for a Stationary Inlet. . . . . . , . . . . . . . . 124 48 Location of Velocity Measurement Stations 136 49 50 51 52 53 54 55 56 57 58 59 60 61 Vertical Velocity Profiles, 1435 4 March, 1971 . . 137 Vertical Velocity Profiles, 1605 4...

  11. Ecology of Sandy Beach Intertidal Macroinfauna Along the Upper Texas Coast

    E-Print Network [OSTI]

    Witmer, Angela Dawn

    2012-07-16T23:59:59.000Z

    ., 2007). Sediment may return to the beach face when water recedes, but much remains within the water inundated prairie and marsh lands. Not only does natural disturbance occur along the beaches but Texas beaches are greatly impacted by human... impact and erosion peaking within the past decade. Many prominent beach ecological principles such as ryhthmicity, plasticity, and mobility, have only been laid out this century (Schlacher et al., 2007). Initial beach research examined physical...

  12. Cosmology on the Beach - Carlos Frenk: Lecture 1

    ScienceCinema (OSTI)

    Carlos Frenk

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  13. Cosmology on the Beach - Carlos Frenk, Lecture 2

    ScienceCinema (OSTI)

    Carlos Frenk

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  14. Beaches Energy Services- Solar Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    Beaches Energy Services offers a solar water heating rebate to their residential customers. This $500 rebate applies to new systems which are properly installed and certified. New construction and...

  15. Cosmology on the Beach - Carlos Frenk, Lecture 3

    ScienceCinema (OSTI)

    Carlos Frenk

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  16. Cosmology on the Beach - Eric Linder: Lecture 1

    ScienceCinema (OSTI)

    Eric Linder

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  17. Cosmology on the Beach - Chung-Pei Ma: Lecture 2

    ScienceCinema (OSTI)

    Chung-Pei Ma

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009

  18. Cosmology on the Beach: Eric Linder, lecture 3

    ScienceCinema (OSTI)

    Eric Linder

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  19. Cosmology on the Beach - Simon White, Lecture 3

    ScienceCinema (OSTI)

    Simon White

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  20. Cosmology on the Beach - Wayne Hu: Lecture 2

    ScienceCinema (OSTI)

    Wayne Hu

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  1. Cosmology on the Beach - Chung-Pei Ma, Lecture 3

    ScienceCinema (OSTI)

    Chung-Pei Ma

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  2. Cosmology on the Beach - Eric Linder, Lecture 2

    ScienceCinema (OSTI)

    Eric Linder

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.  

  3. Eight: Heart of the City: Development at Redondo Beach

    E-Print Network [OSTI]

    Moilanen, Renee

    2006-01-01T23:59:59.000Z

    ibid. North-Hager, Eddie. “Heart of City opponent wins RBKristin S. “RB to Undo Heart of the City Zoning. ” DailyWayne. “Where Did the “Old Heart” of Redondo Beach Go? ”

  4. Nonlinear resonance of trapped waves on a plane beach

    E-Print Network [OSTI]

    Li, Guangda, Ph. D. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    Linear edge waves were first found mathematically by Stokes (1846). It has long been a topic of interest, since edge waves are believed to be responsible for the formation of beach cusps. Galvin (1965) was the first to ...

  5. Cosmology at the Beach Lecture: Chung-Pei Ma

    ScienceCinema (OSTI)

    Chung-Pei Ma

    2010-01-08T23:59:59.000Z

    The lecture was delivered as part of the "Cosmology at the Beach" winter school organized by Berkeley Lab's George Smoot in Los Cabos, Mexico from Jan. 12-16, 2009.

  6. Technical Note LiDAR-derived measures of hurricane-and restoration-generated beach

    E-Print Network [OSTI]

    Weishampel, John F.

    are particularly vulnerable, as they rely on specific beaches for reproduction and exhibit high-nest-site fidelityTechnical Note LiDAR-derived measures of hurricane- and restoration-generated beach morphodynamics

  7. Spring 2014 | Dr. Al-Kodmany Back to the Beach

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    I Spring 2014 | Dr. Al-Kodmany Back to the Beach A Community-Based Approach to Sustainable Economic A Sustainable Economic Development Plan Rooted in Community Miller has incredible ecological assets in its dunes cost of living. But Miller is not without challenges; it suffers from population loss, high

  8. Geosynthetics 2013 April 1-4, Long Beach, California

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    force while their elongation is measured. These tests are performed under controlled temperature equipment. A biaxial geogrid and a nonwoven geotextile were used in these tests, which comprised creepGeosynthetics 2013 April 1-4, Long Beach, California Confined-accelerated Creep Tests

  9. California State University Long Beach, Research Foundation Employment Opportunities

    E-Print Network [OSTI]

    Sorin, Eric J.

    in a professional manner with a wide variety of individuals of all levels within the 49er Foundation, Research, advanced typing skills and knowledge of Microsoft Office (Excel and Word). Must be able to take University Drive, Ste. 332, Long Beach, CA 90815 or visit our web site at www.foundation.csulb.edu for e

  10. Effects of the Alvenus oil spill on Jamaica beach macrofauna 

    E-Print Network [OSTI]

    Sweet, Merrill Henry

    1987-01-01T23:59:59.000Z

    EFFECTS OF THE ALVENUS OIL SPILL ON JAMAICA BEACH MACROFAUNA A Thesis by MERRILL HENRY SWEET Submitted to the Graduate College of Texas A&M U n i v e r s i t y in p a r t i a l f u l f i l l m e n t of the requirement f o r the degree....\\ Bright^ (Member) Timothy C. H a l l (Head of Department) August 1987 i i i ABSTRACT E f f e c t s of the Alvenus Oil S p i l l on Jamaica Beach Macrofauna. (August 1987) M e r r i l l Henry Sweet, B.S., Texas A&M U n i v e r s i t y Chair...

  11. Effects of the Alvenus oil spill on Jamaica beach macrofauna

    E-Print Network [OSTI]

    Sweet, Merrill Henry

    1987-01-01T23:59:59.000Z

    e c t e d at Jamaica beach, 1983 41 9. Number of i n d i v i d u a l s , percent composition of t o t a l number of i n d i v i d u a l s , biomass, and percent composition of t o t a l biomass f o r species c o l l e c t e d at Jamaica beach... reductions to < 5% of pre- s p i l l biomasses at the most impacted s t a t i o n . Their t o l e r a n c e f o r o i l often enables polychaetes to be some of the most abundant animals l e f t i n the community (Lewbel 1985). In 9 f a c t , polychaetes...

  12. Dark Beaches – FDOT’s Continued Efforts to Implement Environmentally Sensitive Lighting Systems

    E-Print Network [OSTI]

    Broadwell, Ann

    2007-01-01T23:59:59.000Z

    address coastal roadway lighting and its impacts on adjacentUSA Abstract Artificial lighting has two important effectscontribute to many beach lighting problems. The existing

  13. The nature of a site : urban and architectural design perspectives on the renovation of Revere Beach, Massachusetts

    E-Print Network [OSTI]

    Katz, Jane Sarah

    1985-01-01T23:59:59.000Z

    Through analyses and design studies, this thesis articulates qualities of environment and architecture that affect the redevelopment of an urban beach. Looking at Boston, Massachusetts' Revere Beach, it examines the impact ...

  14. Sands and environmental conditions impact the abundance and persistence of the fecal indicator bacteria Enterococcus at recreational beaches

    E-Print Network [OSTI]

    Halliday, Elizabeth (Elizabeth Ann)

    2012-01-01T23:59:59.000Z

    The marine fecal indicator Enterococcus is measured at beaches to detect fecal contamination events, and beaches are closed to bathers when Enterococcus is found to exceed the federally mandated limit. This dissertation ...

  15. American Statistical Association Announces 2011 Award Recipients Awards ceremony to be held at Joint Statistical Meetings in Miami Beach, FL

    E-Print Network [OSTI]

    Washington at Seattle, University of

    American Statistical Association Announces 2011 Award Recipients Awards ceremony to be held at Joint Statistical Meetings in Miami Beach, FL MIAMI BEACH, FL (PRWEB) AUGUST 1, 2011 ­ The American Statistical Association (ASA), the nation's preeminent professional statistical society, today announced

  16. A resource complex for Sandy Neck Beach : an exploration in building on an ever-changing land

    E-Print Network [OSTI]

    Solarz, Cynthia L. (Cynthia Lynne)

    1987-01-01T23:59:59.000Z

    This thesis is an exploration into a spit of land, called Sandy Neck Beach on Cape Cod, Massachusetts. It is a barrier beach system which is experiencing many changes. These changes are manifest not only in its physical ...

  17. Salton Sea Beach, California: Energy Resources | 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 YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to:RoscommonSBY SolutionsChangeOklahoma:OpenSalley,County,City,Beach,

  18. Estral Beach, Michigan: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazelPennsylvania: Energy Resources JumpVermont: EnergySystemsEstral Beach,

  19. Ewa Beach, Hawaii: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazelPennsylvania: Energy Resources(RECP)Coolers JumpOpenRoad TownEwa Beach,

  20. Pismo Beach, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation,Pillar Group BV Jump to: navigation, search Name:Pipo Systems Jump to:Pismo Beach,

  1. Jensen Beach, Florida: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | Wind FarmJefferson City,JemezJensen Beach,

  2. Highland Beach, Florida: Energy Resources | 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 Jump to: navigation, search Name:HidraliaWellsDownholeHighland Beach,

  3. Hillsboro Beach, Florida: Energy Resources | 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 Jump to: navigation, searchCounty,City,Hillsboro Beach, Florida:

  4. Pine Beach, New Jersey: Energy Resources | 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 YouKizildere I Geothermal PwerPerkins County, Nebraska: Energy ResourcesPicketGeothermal Project JumpBeach, New Jersey:

  5. Los Angeles and Long Beach Harbors Model | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf KilaueaInformation Other4Q07) Wind Farm Jump1 JumpBeach Harbors

  6. Golden Beach, Florida: Energy Resources | 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.pdfGetec AG Contracting Jump to:Echo,GEF JumpGloverville,GogebicGoldGolden Beach,

  7. Hallandale Beach, Florida: Energy Resources | 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.pdfGetec AG| Open EnergyGuntersvilleHallandale Beach, Florida: Energy Resources

  8. Sound Beach, New York: Energy Resources | 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 YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk, NewSingaporeSonix Japan Inc Jump to:Sound Beach, New York:

  9. North Beach Haven, New Jersey: Energy Resources | 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 YouKizildere I Geothermal Pwer PlantMunhall,Missouri: Energy Resources JumpOklahoma: EnergyBaltimore, Ohio:Beach Haven, New

  10. North Beach, Florida: Energy Resources | 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 YouKizildere I Geothermal Pwer PlantMunhall,Missouri: Energy Resources JumpOklahoma: EnergyBaltimore, Ohio:Beach Haven,

  11. Craig Beach, Ohio: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformationNew|CoreCp Holdings Llc Jump to: navigation,Beach, Ohio:

  12. Deerfield Beach, Florida: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility Database DataDatatechnicNewDeafDeer Lodge County,Deerfield Beach,

  13. Detroit Beach, Michigan: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility DatabaseMichigan: EnergyKansas:Detroit Beach, Michigan: Energy

  14. Diamond Beach, New Jersey: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility DatabaseMichigan:Dewey-Humboldt, Arizona:Research CompanyBar,Beach,

  15. Solana Beach, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistmaSinosteel CorporationSocovoltaicSolaer sa Jump to:Beach,

  16. Moss Beach, California: Energy Resources | 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 YouKizildere I Geothermal Pwer Plant JumpMarysville,Missoula,MontereyHill, California:Morse, Louisiana:Mosinee,Moss Beach,

  17. Property:Description of Beach | 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 YouKizildere I Geothermal PwerPerkins County, Nebraska:PrecourtOid Jump to: navigation, searchto Computational ModelsBeach

  18. Redondo Beach, California: Energy Resources | 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 YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation, searchRay County,OpenCounty,Redfield,Beach,

  19. City of New Smyrna Beach, Florida (Utility Company) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformation Smyrna Beach, Florida (Utility Company) Jump to:

  20. Geospatial analysis of vulnerable beach-foredune systems from decadal time series of lidar data

    E-Print Network [OSTI]

    Mitasova, Helena

    Geospatial analysis of vulnerable beach-foredune systems from decadal time series of lidar data, Geospatial analysis of vulnerable beach- foredune systems from decadal time series of lidar data, Journal densities; therefore, geospatial analysis, when applied to decadal lidar time series, needs to address

  1. Wave run-up on a high-energy dissipative beach Peter Ruggiero

    E-Print Network [OSTI]

    Wave run-up on a high-energy dissipative beach Peter Ruggiero Coastal and Marine Geology Program, U in foreshore beach morphology, wave run-up data collected along the central Oregon coast during February 1996 stand in contrast to run-up data currently available in the literature. During a single data run lasting

  2. SPECTRAL CHARACTERIZATION OF SANDY BEACHES IN WESTERN PORTION OF PUERTO RICO

    E-Print Network [OSTI]

    Gilbes, Fernando

    SPECTRAL CHARACTERIZATION OF SANDY BEACHES IN WESTERN PORTION OF PUERTO RICO By Gretchen M in GEOLOGY UNIVERSITY OF PUERTO RICO MAYAGÜEZ CAMPUS 2005 Approved by of the Department #12;ii Abstract Remote sensing applications to beach system in Puerto Rico have been limited

  3. The extent of chronic marine oil pollution in southeastern Newfoundland waters assessed through beached

    E-Print Network [OSTI]

    Jones, Ian L.

    on their feathers is heavy fuel oil mixed with lubricants, the mixture found in bilges of large vessels. BeachedThe extent of chronic marine oil pollution in southeastern Newfoundland waters assessed through America. Oiled seabirds have washed up on beaches in Newfoundland for many decades. Most oil

  4. Jefferson Lab Awards $14.1 Million Contract To Virginia Beach...

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

    14.1 Million Contract To Virginia Beach Construction Company HallD This architectural rendering depicts Jefferson Lab's Hall D complex, to be built as part of a 310 million...

  5. Accessing the Energy Department’s Lidar Buoy Data off Virginia Beach

    Broader source: Energy.gov [DOE]

    In December 2014, Pacific Northwest National Laboratory (PNNL) deployed the Energy Department’s floating lidar buoy off of Virginia Beach, Virginia, in less than 30 meters (m) of water,...

  6. Stand on any beach and you realise that there is no shortage

    E-Print Network [OSTI]

    Stand on any beach and you realise that there is no shortage of water. Desalination is a proven and will enjoy: follows the journey of a water drop, Crystal, through the desalination process on her way

  7. Depth inversion for nonlinear waves shoaling over a barred-beach 1

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    and calibrated for mild slopes are applied to the barred-beach. Expectedly, errors on depth prediction occur techniques such as Synthetic Aperture Radar (SAR), are still quite problematic under the current state

  8. A study of beach cusp morphodynamic processes: Galveston Island and Bolivar Peninsula, Texas

    E-Print Network [OSTI]

    Bryant, John Thomas

    1987-01-01T23:59:59.000Z

    spacings did not adequately describe the measured cusp spacings (R (0. 001). Nine independent variables including incident wave period, beach slope, longshore current velocity, wind speed, longshore current direction, wave energy, beach sediment size..., although a cursory relationship between the fractal dimension, cusp spacing, and wave height was suggested in this thesis, the concept of fractal geometry and its application to cusp morphodynamics should be investigated and tested further. DEDICATION...

  9. Factors influencing equilbrium of a 1:60 model sand beach

    E-Print Network [OSTI]

    Smith, David Clement

    1975-01-01T23:59:59.000Z

    slope 1:60 are investigated under the effects of wave action. The hypothesis that the beach profile reaches a repeatable equilibrium form is tested. The entire profile is found not to have a repeatable equili. ? brium shape, possibly due to minor... uncontrollable water level varia- tions. Certain features of the profile are found to exhibit better qualities than others. The maximum height of the beach crest above the still water level is determined to have a two-dimensional repeatable stable shape...

  10. Hydraulic properties of an artificial tidal inlet through a Texas barrier beach

    E-Print Network [OSTI]

    Prather, Stanley Harold

    1972-01-01T23:59:59.000Z

    HYDRAULIC PROPERTIES OF AN ARTIFICIAL TIDAL INLET THROUGH A TEXAS BARRIER BEACH A Thesis by STANLEY HAROLD PRATHER Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE August 1972 Major Sub]ect: Civil Engineering HYDRAULIC PROPERTIES OF AN ARTIFICIAL TIDAL INLET THROUGH A TEXAS BARRIER BEACH A Thesis by STANLEY HAROLD PRATHER Approved as to style and content by: (Chairman of Committee) (( (Head...

  11. Hydronic Heating Coil Versus Propane Furnace, Rehoboth Beach, Delaware (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-01-01T23:59:59.000Z

    Insight Homes constructed two houses in Rehoboth Beach, Delaware, with identical floor plans and thermal envelopes but different heating and domestic hot water (DHW) systems. Each house is 1,715-ft2 with a single story, three bedrooms, two bathrooms, and the heating, ventilation, and air conditioning (HVAC) systems and ductwork located in conditioned crawlspaces. The standard house, which the builder offers as its standard production house, uses an air source heat pump (ASHP) with supplemental propane furnace heating. The Building America test house uses the same ASHP unit with supplemental heat provided by the DHW heater (a combined DHW and hydronic heating system, where the hydronic heating element is in the air handler). Both houses were occupied during the test period. Results indicate that efficiency of the two heating systems was not significantly different. Three issues dominate these results; lower system design performance resulting from the indoor refrigerant coil selected for the standard house, an incorrectly functioning defrost cycle in the standard house, and the low resolution of the natural gas monitoring equipment. The thermal comfort of both houses fell outside the ASHRAE Standard 55 heating range but was within the ACCA room-to-room temperature range when compared to the thermostat temperature. The monitored DHW draw schedules were input into EnergyPlus to evaluate the efficiency of the tankless hot water heater model using the two monitored profiles and the Building America House Simulation Protocols. The results indicate that the simulation is not significantly impacted by the draw profiles.

  12. Investigation of Stinson Beach Park storm damage and evaluation of alternative shore protection measures

    SciTech Connect (OSTI)

    Ecker, R.M.; Whelan, G.

    1984-07-01T23:59:59.000Z

    An investigation was made of storm damage during the winter of 1982-83 to the National Park Service's Stinson Beach Park. The investigation included an assessment of the storm damage, evaluation of physical processes contributing to the damage, subsequent beach recovery, and the feasibility of implementing shoreline protection measure to reduce future risk. During the winter of 1982-83, the beach was almost completely denuded of sand, wave overwash damaged the foredune, vegetation on the foredune was destroyed, and backshore flooding occurred. Two structures and a parking lot were endangered as the shoreline receded. Subsequent recovery of the park beach was rapid. By January 1982 sand had moved back onshore and a beach berm was beginning to reform. The foredune and dune vegetation received the only permanent damage. Four shoreline protection alternatives were evaluated. These include no action, dune development/enhancement, construction of a rock riprap revetment, and offshore installation of artificial seaweed. The first costs (estimated costs, excluding maintenance) range from about $90,000 to $475,000. The least-cost protection measure is riprap revetment, which protects the two structures and parking lot endangered during the 1982-83 winter storms. Construction of a foredune along the entire park beach is the highest cost protection measure. If no shore protection action measures are implemented, wave overwash of the foredune can be expected to occur on the average of every 2 to 3 years, and beach degradation, similar to that during the 1982-83 winter, can be expected to occur on the average of every 10 to 12 years. 12 references, 19 figures, 18 tables.

  13. Small Drains, Big Problems: The Impact of Dry Weather Runoff on Shoreline Water Quality at Enclosed Beaches

    E-Print Network [OSTI]

    AghaKouchak, Amir

    . In this paper we present field measurements and modeling studies aimed at evaluating the impact of small storm is minimal and human contact likely. Outdoor water conservation and urban retrofits that minimize the volume beach water quality in Newport Bay and other urban-impacted enclosed beaches. INTRODUCTION Enclosed

  14. Seasonal patterns of coarse sediment transport on a mixed sand and gravel beach due to vessel wakes, wind waves, and tidal currents

    E-Print Network [OSTI]

    Talke, Stefan

    Seasonal patterns of coarse sediment transport on a mixed sand and gravel beach due to vessel wakes, wind waves, and tidal currents Gregory M. Curtiss a, , Philip D. Osborne b,1 , Alexander R. Horner December 2008 Accepted 29 December 2008 Keywords: mixed sand and gravel beach ferry wake wash beach

  15. To appear: Proceedings 2002 National Conference on Beach Preservation Technology, FSBPA. FEDERAL INLETS DATABASE

    E-Print Network [OSTI]

    US Army Corps of Engineers

    To appear: Proceedings 2002 National Conference on Beach Preservation Technology, FSBPA. FEDERAL and unpublished knowledge of specific inlets in the United States. INTRODUCTION The U.S. Army Corps of Engineers to fully populate it. The Federal Inlets Database will 1) Applied Technology and Management, Inc., 2770 NW

  16. Edisto Beach Coastal Storm Damage Reduction Project Colleton County, South Carolina

    E-Print Network [OSTI]

    US Army Corps of Engineers

    ,395,000 (35 percent). Of that amount, the cost of lands, easements, rights-of-way, relocations, and dredged the cost of protecting that portion of beach. The non-Federal sponsor for the project is the Town of Edisto for the berm and dune construction and renourishment will be dredged from a borrow site located approximately 1

  17. BOCA RATON DANIA BEACH DAVIE FORT LAUDERDALE HARBOR BRANCH JUPITER PORT ST. LUCIE Educational Plant Survey

    E-Print Network [OSTI]

    Fernandez, Eduardo

    BOCA RATON DANIA BEACH DAVIE FORT LAUDERDALE HARBOR BRANCH JUPITER PORT ST. LUCIE Educational Plant Survey 2011/2012 ­ 2016/2017 Approved by FAU BOT on June 15, 2011 #12;EDUCATIONAL PLANT SURVEY Florida ...................................................................................................................... ii Educational Plant Survey Team

  18. HOW TO GET TO ODU DENTAL HYGIENE CARE From Virginia Beach

    E-Print Network [OSTI]

    HOW TO GET TO ODU DENTAL HYGIENE CARE FACILITY From Virginia Beach: Take 264 West to Downtown on your left. The Dental Hygiene Care facility is located on the corner of Hampton Blvd and 47th street the Dental Hygiene Care Facility front office once you have parked in the garage. From Williamsburg: Take I

  19. Docket Number: 12-AFC-03 Project Title: Redondo Beach Energy Project

    E-Print Network [OSTI]

    Redondo Beach Generating Station currently has four operating steam generating units (Units 5, 6, 7, and 8 composed of three natural gas combustion turbine generators (CTG), three supplemental-fired heat recovery steam generators (HRSG), a steam turbine generator (STG), an air-cooled condenser, and ancillary

  20. Oil spill nears the beaches of Florida, and the leak may not be plugged before Christmas

    E-Print Network [OSTI]

    Belogay, Eugene A.

    Oil spill nears the beaches of Florida, and the leak may not be plugged before Christmas By David Gardner Last updated at 11:32 AM on 3rd June 2010 BP's giant oil slick was bearing down on Florida holidaymakers a year visit Florida and state leaders fear the oil will devastate a tourist industry

  1. SIZE COMPOSITION AND GROWTH OF YOUNG ROCK CRAB, CANCER IRRORATUS, ON A ROCKY BEACH IN MAINE!

    E-Print Network [OSTI]

    . Because rock crab is a valuable commercial species as well as an important food source of lobsters (EnnisSIZE COMPOSITION AND GROWTH OF YOUNG ROCK CRAB, CANCER IRRORATUS, ON A ROCKY BEACH IN MAINE! JAY S KROUSE' ABSTRACT Monthly hand collections of small rock crab, Cancer irrorallls, were made from

  2. Company City State Contact Info Acacia Research Corporation Newport Beach CA www.acaciaresearch.com

    E-Print Network [OSTI]

    McGaughey, Alan

    Company City State Contact Info Acacia Research Corporation Newport Beach CA www. Fountain City CA www.kingston.com Microchip Technology Incorporated Chandler AZ www Milpitas CA www.sandisk.com Silicon Storage Technology, Inc. Sunnyvale CA www.sst.com SMART Modular

  3. Monitoring littoral sediment accretion and erosion at Forest Park Beach, Lake Forest, Illinois

    SciTech Connect (OSTI)

    Trask, C.B.; Chrzastowski, M.J. (Illinois State Geological Survey, Champaign, IL (United States))

    1993-03-01T23:59:59.000Z

    Forest Park Beach, a coastal-development project on the shore of Lake Michigan at Lake Forest, Illinois, consists of a series of segmented, rubble-mound breakwaters that form four beach cells and a small-boat launch basin. The project was designed to have minimal impact on local littoral-transport processes. The 9-hectare footprint extends no more than 107 m lakeward of the preconstruction shoreline; the arcuate plan for the project was designed to facilitate littoral sediment bypass. In order to evaluate the project's impact on littoral processes, the City of Lake Forest is required to conduct a monitoring program to identify any adverse effects such as updrift accretion and downdrift erosion. Annual and semi-annual monitoring has been underway since project completion in 1987. In 1991, the Illinois State Geological Survey (ISGS) began independent data collection and review of the annual monitoring data. As of the 1992 ISGS monitoring, the project is allowing for the development of natural bypass by the littoral-sediment stream. A bar occurs in 0.9 to 1.2 m of water on the north side of the project and continues as an accretionary wedge along the lakeward side of the breakwaters for approximately two-thirds of the project length. One adverse impact is that the beach cells are acting as traps for fine sand, with the greatest entrapment in the three northern (updrift) cells. Comparison of 1987 and 1992 profiles from the beach cells indicates nearshore accretion of as much as two meters. To date no detrimental effects to shoreline properties have been documented downdrift of the project.

  4. Long Beach Transit: Two-Year Evaluation of Gasoline-Electric Hybrid Transit Buses

    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 5Let usNucleartearingLong Beach Transit: Two-Year

  5. Auxiliary feedwater system risk-based inspection guide for the Point Beach nuclear power plant

    SciTech Connect (OSTI)

    Lloyd, R C; Moffitt, N E; Gore, B F; Vo, T V; Vehec, T A [Pacific Northwest Lab., Richland, WA (United States)

    1993-02-01T23:59:59.000Z

    In a study sponsored by the US Nuclear Regulatory Commission (NRC), Pacific Northwest Laboratory has developed and applied a methodology for deriving plant-specific risk-based inspection guidance for the auxiliary feedwater (AFW) system at pressurized water reactors that have not undergone probabilistic risk assessment (PRA). This methodology uses existing PRA results and plant operating experience information. Existing PRA-based inspection guidance information recently developed for the NRC for various plants was used to identify generic component failure modes. This information was then combined with plant-specific and industry-wide component information and failure data to identify failure modes and failure mechanisms for the AFW system at the selected plants. Point Beach was selected as one of a series of plants for study. The product of this effort is a prioritized listing of AFW failures which have occurred at the plant and at other PWRS. This listing is intended for use by NRC inspectors in the preparation of inspection plans addressing AFW risk-important components at the Point Beach plant.

  6. NAME: Green Gulch Creek Stream Restoration Project LOCATION: Redwood Creek Watershed in Marin County, CA (closest town is Muir Beach)

    E-Print Network [OSTI]

    US Army Corps of Engineers

    NAME: Green Gulch Creek Stream Restoration Project LOCATION: Redwood Creek Watershed in Marin County, CA (closest town is Muir Beach) ACRES: 1.5 acres riparian habitat; 0.3 miles of stream channel-modified, straightened, and downcut channel; relocate the farm road and fences paralleling the stream to provide

  7. Dye-Sensitized Solar Cells Based on Hierarchically Structured John Beach, Washington University in St. Louis, 2012 SURF Fellow

    E-Print Network [OSTI]

    Li, Mo

    Dye-Sensitized Solar Cells Based on Hierarchically Structured John Beach, Washington University to increase the efficiency of these solar cells. One of the barriers that needs to be overcome to make dye-sensitized in St. Louis, 2012 SURF Fellow Advisor: Prof. Zhiqun Lin; Mentor: Dr. Xukai Xin Introduction Dye-sensitized

  8. Shore & Beach Vol. 77, No. 4 Fall 2009 Page 1 ea-level rise (SLR) has received

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Shore & Beach Vol. 77, No. 4 Fall 2009 Page 1 S ea-level rise (SLR) has received considerable that is typically 50 years, and it Sea level rise and consequences for navigable coastal inlets By Julie D. Rosati.C.Kraus@usace.army.mil ABSTRACT Global sea level is expected to rise over the next 100 years. Changes in sea level will alter

  9. EA-1985: Virginia Offshore Wind Technology Advancement Project (VOWTAP), 24 nautical miles offshore of Virginia Beach, Virginia

    Broader source: Energy.gov [DOE]

    DOE is proposing to fund Virginia Electric and Power Company's Virginia Offshore Wind Technology Advancement Project (VOWTAP). The proposed VOWTAP project consists of design, construction and operation of a 12 megawatt offshore wind facility located approximately 24 nautical miles off the coast of Virginia Beach, VA on the Outer Continental Shelf.

  10. Benson Beach Demonstration Project: Composition and Abundance of Biota at Three Alternative Sump Sites

    SciTech Connect (OSTI)

    Williams, Greg D.; Pearson, Walter H.; Evans, Nathan R.; Anderson, Michael G.

    2004-01-15T23:59:59.000Z

    The Portland District of the U.S. Army Corps of Engineers is investigating plans to provide sediment to nourish beaches north of the Mouth of the Columbia River (MCR). Under the currently designed proposal, sediment dredged from the MCR will be temporarily stored at one of three proposed areas south of the North Jetty before being redredged and moved by a cutterhead pipeline dredge over the jetty to nourish Benson Beach. Resulting potential impacts to resident Dungeness crab (Cancer magister) and fishes represent one of the criteria for evaluating each of the alternative locations. To establish the species composition and relative abundance of crabs and fishes associated with each of the three proposed sump areas, researchers from the Pacific Northwest National Laboratory Marine Sciences Division completed nine field sampling trips from July 8, 2003, to November 1, 2003, for a total of 113 successful trawls comprising an area of over 7.4 ha (74,156 m2). This report documents the results of that effort. To understand the relative risk of losses to crab populations associated with dredging impacts at the sump alternative areas, it is recommended that a modified dredge impact model be developed using the data collected in this study. This model should estimate crab adult equivalent loss and associated error rates to gain a population-level perspective on the potential entrainment impacts at each of the three alternative sump areas. As well, a sustained survey of Dungeness crab distribution and movement within the Columbia River estuary would clarify the relative value of the sump areas as a migratory corridor for crab populations, and support management decisions relative to issues associated with dredged material handling and disposal.

  11. Proceedings of the ASHRAE/DOE/BTECC Conference, Thermal Performance of the Exterior Envelopes of Buildings VII, Clearwater Beach, Florida, December 7-11, 1998

    E-Print Network [OSTI]

    LBNL-41694 BS-384 Proceedings of the ASHRAE/DOE/BTECC Conference, Thermal Performance of the Exterior Envelopes of Buildings VII, Clearwater Beach, Florida, December 7-11, 1998 This work was supported

  12. Field studies of beach cones as coastal erosion control/reversal devices for areas with significant oil and gas activities. Annual report, February 24, 1993--February 23, 1994

    SciTech Connect (OSTI)

    Law, V.J.

    1994-07-07T23:59:59.000Z

    The primary objective of this project was to evaluate the utility of a device called the ``beach cone`` in combating coastal erosion. Seven initial sites were selected for testing beach cones in a variety of geometric configurations, and six sites were actually used. Six hundred beach cones were installed at the six sites in late July and early August, 1992. An additional 109 cones were installed at an eighth site in December of 1992. Findings indicate that beach cones accreted significant amounts of materials along the beach of a barrier island. At the eighth installation the amount of accreted material was measured by surveys to be 2200 cubic meters (2900 cubic yards) in February of 1993, when the cones were found to have been completely covered by the material. The average increase in elevation was about 7 inches (0. 18 in) with a maximum buildup of 3 ft. (I in). At other test sites, accretion rates have been less dramatic but importantly, no significant additional erosion has occurred, which is a positive result. The cost of sediment accretion using beach cones was found to be about $13.72 per cubic yard of sand or approximately $500,000 per mile of beach, which would be much lower if the cones were mass produced. The survival of the cones through the fringes of Hurricane Andrew indicates that they can be anchored sufficiently to survive significant storms. The measurements of the cones settling rates indicate that this effect is negligible, does not hinder their effectiveness. We do not yet have sufficient data to state the categorical success of the beach cones, but results to date are encouraging.

  13. An investigation of the effects of progressive waves on an oil slick retained by an absorber beach

    E-Print Network [OSTI]

    Huang, Yau-Ming Kennith

    1973-01-01T23:59:59.000Z

    for the degree of MASTER OF SCIENCE August 1973 Major Subject: C''oil Engineering AN INVESTIGATION OF THE EFFECTS OF PROGRESSIVE WAVES ON AN OIL SLICK RETAINED BY AN ABSORBER BEACH A Thesis by YAU-MING HUANG Approved as to style and content by..., Proceedings of the American Society of Civil Engineers. 1. determine the relationship between oil slick setup including certain oil properties and the wave charac- teristics; and to 2. determine the basic mechanism responsible for this relation...

  14. Origin of the springs of Costa Verde beach in Lima Peru

    E-Print Network [OSTI]

    Rojas, Ruben; Mamani, Enoc; Maguina, Jose; Montoya, Eduardo; Baltuano, Oscar; Bedregal, Patricia; Coria, Lucy; Guerra, Alcides; Justo, Santiago; Churasacari, Tania

    2013-01-01T23:59:59.000Z

    This paper tries to determine the origin of springs on the Costa Verde beach, located in the district of Barranco, Miraflores and Magdalena, province of Lima, Peru. These springs emerge near the shoreline, from the lower layers of a 80 meter high cliff. They have survived the process of urbanization of agricultural land, started in the early 70, which decreased the water table aquifer of Lima, and wiped the water leaks from the cliffs. To identify the source of the springs, isotopic, physical, chemical and bacteriological analysis was carried out for samples from five springs. The isotopic concentrations in waters from Costa Verde springs are depleted compared to those obtained for Lima aquifer waters, which is recharged by infiltration of the Rimac River. The measured values of those concentrations suggest that water from the Costa Verde springs should come from a direct recharge in the upper and middle basin, due to infiltration of rainfall or the river at an altitude of about 3600 m. Conductivity and tempe...

  15. Field studies of beach cones as coastal erosion control/reversal devices for areas with significant oil and gas activities. Final report, February 24, 1992--September 18, 1995

    SciTech Connect (OSTI)

    Law, V.J.

    1995-09-18T23:59:59.000Z

    The primary objective of this project was to evaluate the utility of a device called the {open_quotes}beach cone{close_quotes} in combating coastal erosion. Seven initial sites were selected for testing beach cones in a variety of geometric configurations. Permits were obtained from the State of Louisiana and the U.S. Army Corps of Engineers to perform the work associated with this study. Six hundred beach cones were actually installed at six of the sites in late July and early August, 1992. Findings indicate that beach cones accreted significant amounts of materials along the beach of a barrier island, and they might have been instrumental in repairing an approximately 200 meter gap in the island. At the eighth installation the amount of accreted material was measured by surveys to be 2200 cubic meters (2900 cubic yards) in February of 1993, when the cones were found to have been completely covered by the material. At other test sites, accretion rates have been less dramatic but importantly, no significant additional erosion has occurred, which is a positive result. The cost of sediment accretion using beach cones was found to be about $13.72 per cubic yard, which would be much lower if the cones were mass produced (on the order of $3.00 per cubic yard). The survival of the cones through the fringes of Hurricane Andrew indicates that they can be anchored sufficiently to survive significant storms. The measurements of the cones settling rates indicate that this effect is not significant enough to hinder their effectiveness. A subcontract to Xavier University to assess the ecological quality of the experimental sites involved the study of the biogeochemical cycle of trace metals. The highest concentration of heavy metals were near a fishing camp while the lowest levels were in the beach sand of a barrier island. This suggests that the metals do not occur naturally in these areas, but have been placed in the sediments by man`s activities.

  16. Simulations Data Simulation Type

    E-Print Network [OSTI]

    Wang, Xiaorui "Ray"

    to request different simulations data. The flow chart above demonstrates the different steps and options@ornl.gov) Autotune Drupal 7 CMS Current building energy models (BEMs), using EnergyPlus or other simulations, are unreliable because they have to constantly be calibrated to match actual energy usage data. Currently

  17. Variations in Nearshore Bar Morphology: Implications for Rip Current Development at Pensacola Beach, Florida from 1951 to 2004

    E-Print Network [OSTI]

    Barrett, Gemma Elizabeth

    2012-10-19T23:59:59.000Z

    . As the bar welds to the 17 shore, the beach state changes to a low tide terrace morphology (Wright and Short, 1984). Alternatively, if high energy conditions are introduced, the bar will detach from the shoreline and become more parallel in form, quickly... and whether or not they are expected to support the development of rip currents. Meteorological factors have also shown to have an influence on rip current intensity as 90% of rip current drowning and rescues in two Florida counties took place when wind...

  18. Post Fukushima tsunami simulations for Malaysian coasts

    SciTech Connect (OSTI)

    Koh, Hock Lye, E-mail: kohhl@ucsiuniversity.edu.my [Office of Deputy Vice Chancellor for Research and Post Graduate Studies, UCSI University, Jalan Menara Gading, 56000 Kuala Lumpur (Malaysia); Teh, Su Yean, E-mail: syteh@usm.my [School of Mathematical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang (Malaysia); Abas, Mohd Rosaidi Che [Malaysian Meteorological Department, MOSTI, Kuala Lumpur (Malaysia)

    2014-10-24T23:59:59.000Z

    The recent recurrences of mega tsunamis in the Asian region have rekindled concern regarding potential tsunamis that could inflict severe damage to affected coastal facilities and communities. The 11 March 2011 Fukushima tsunami that crippled nuclear power plants in Northern Japan has further raised the level of caution. The recent discovery of petroleum reserves in the coastal water surrounding Malaysia further ignites the concern regarding tsunami hazards to petroleum facilities located along affected coasts. Working in a group, federal government agencies seek to understand the dynamics of tsunami and their impacts under the coordination of the Malaysian National Centre for Tsunami Research, Malaysian Meteorological Department. Knowledge regarding the generation, propagation and runup of tsunami would provide the scientific basis to address safety issues. An in-house tsunami simulation models known as TUNA has been developed by the authors to assess tsunami hazards along affected beaches so that mitigation measures could be put in place. Capacity building on tsunami simulation plays a critical role in the development of tsunami resilience. This paper aims to first provide a simple introduction to tsunami simulation towards the achievement of tsunami simulation capacity building. The paper will also present several scenarios of tsunami dangers along affected Malaysia coastal regions via TUNA simulations to highlight tsunami threats. The choice of tsunami generation parameters reflects the concern following the Fukushima tsunami.

  19. Journal of Coastal Research 22 6 15651572 West Palm Beach, Florida November 2006 Hypereutrophication in Ngau Mei Hoi Bay, Hong Kong

    E-Print Network [OSTI]

    Maine, University of

    (6), 1565­1572. West Palm Beach (Florida), ISSN 0749-0208. Investigations into eutrophication of Ngau Mei at the bottom layer were observed. This typical phenomenon of eutrophication resulted from nutrient enrichment and both wild and cultured stocks of animals. A primary cause of red tides is believed to be eutrophication

  20. Proceedings of the ASHRAE/DOE/BTECC Conference, Thermal Performance of the Exterior Envelopes of Buildings VII, Clearwater Beach, Florida, December 7-11, 1998

    E-Print Network [OSTI]

    ;1 Proceedings of the Thermal Performance of the Exterior Envelopes of Buildings VII, December 7-11, 1998LBNL-41443 IS-390 Proceedings of the ASHRAE/DOE/BTECC Conference, Thermal Performance of the Exterior Envelopes of Buildings VII, Clearwater Beach, Florida, December 7-11, 1998 The research reported

  1. Journal of Coastal Research, Special Issue No. 66, 2014 Rip currents and circulation on a high-energy low-tide-terraced beach (Grand Popo, Benin, West Africa) 1

    E-Print Network [OSTI]

    .g. Scott et al., 2011; Brander et al., 2013). In high-income countries (HICs) such as the United States States (United States Lifesaving Association, 2011) and 29 in Australia (Surf Life Saving Australia, 2011 performed for a long time. Yet, fatal drownings at beaches still occur with about 100 reported in the United

  2. Coolum Beach Lagoon Pocket

    E-Print Network [OSTI]

    Greenslade, Diana

    ## ## ## ## ## ## ## ## ## ## ## # # ## ## # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # ## # # # # # # # # # # # # # !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!!!! !!!!!!!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !! !! !! !! !! !! !! !! !! !! Gympie Warwick Gayndah Brisbane Bundaberg Toowoomba Chinchilla Coolangatta Goondiwindi Caboolture Noosa

  3. Evaluating the role of sediment-bacteria interactions on Escherichia coli concentrations at beaches in southern Lake Michigan

    E-Print Network [OSTI]

    's ability to describe the multiple short-duration, low-intensity resuspension events at our sampling sites. A major resuspension event was noted during the simulation period but the sampling frequency during]. Resuspension of sediment- bound bacteria under favorable conditions can increase the levels of bacterial

  4. A restructurable logic simulator

    E-Print Network [OSTI]

    Ledford, Gordon Lee

    1985-01-01T23:59:59.000Z

    , notably logic simulators. This paper reviews the event-driven simulation algorithm used by most software- based simulators and a handful of the existing special-purpose hardware-based logic simulation accelerators. A new hardware-based accelerator... architecture is then presented, that of the restructurab)e logic simulator. This accelerator is based on a, memory-like module. referred to as the restructurable logic simulation accelerator, that essentially "stores" a portion of the network to be simulated...

  5. Vehicle Modeling and Simulation

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

    Vehicle Modeling and Simulation Vehicle Modeling and Simulation Matthew Thornton National Renewable Energy Laboratory matthewthornton@nrel.gov phone: 303.275.4273 Principal...

  6. Web Interface Call Simulator

    E-Print Network [OSTI]

    Ernst, Damien

    Web Interface Call Simulator Stage Description Web Interface for VoIP Call Simulator Net) Version 1.0 ­ 3/09/2012 Page 1 of 6 #12;Web Interface Call Simulator Version 1.0 ­ 3/09/2012 Page 2 of 6 #12;Web Interface Call Simulator Document Control Version Date Notes 1.0 25/8/2012 Reviewed

  7. Simulation Server Project 25

    E-Print Network [OSTI]

    1 Simulation Server for Project 25: Inter-RF Subsystem Interface (ISSI) September 30, 2011 Simulation Server v1.0.0 #12;2 1. Executive Overview..................................................................................................................... 5 3.1. Starting the Server

  8. Software interoperability for energy simulation

    E-Print Network [OSTI]

    Hitchcock, Robert J.

    2002-01-01T23:59:59.000Z

    Tools,” in Building Energy Simulation User News, Vol. 22,Interoperability for Energy Simulation Robert J. Hitchcock,Interoperability for Energy Simulation Robert J. Hitchcock,

  9. Simulating Fluids Exhibiting Microstructure

    E-Print Network [OSTI]

    Title: Simulating Fluids Exhibiting Microstructure Speaker: Noel J. Walkington, ... fluids containing elastic particles, and polymer fluids, all exhibit non-trivial ...

  10. Whole Building Energy Simulation

    Broader source: Energy.gov [DOE]

    Whole building energy simulation, also referred to as energy modeling, can and should be incorporated early during project planning to provide energy impact feedback for which design considerations...

  11. Radiation detector spectrum simulator

    DOE Patents [OSTI]

    Wolf, M.A.; Crowell, J.M.

    1985-04-09T23:59:59.000Z

    A small battery operated nuclear spectrum simulator having a noise source generates pulses with a Gaussian distribution of amplitudes. A switched dc bias circuit cooperating therewith to generate several nominal amplitudes of such pulses and a spectral distribution of pulses that closely simulates the spectrum produced by a radiation source such as Americium 241.

  12. Chemical characterization of beach asphalts

    E-Print Network [OSTI]

    May, Lloyd Alexander

    1973-01-01T23:59:59.000Z

    and flameless atomic absorption spectroscopy for vanadium, nickel, and iron. The neutron activation procedure was shown to be superior for vanadium, but no significant difference in methods was noted for nickel and iron. Other trace metals were done... by activation analysis. These include: mercury, gold, chromium, bromine, zinc, scandium, cobalt, and antimony. Use of the vanadium to nickel ratio, and of other trace element data, was discussed. As a key to understanding the nature of vanadium in crude...

  13. Lagrangian Simulation of Combustion

    SciTech Connect (OSTI)

    Ahmed F. Ghoniem

    2008-05-01T23:59:59.000Z

    A Lagrangian approach for the simulation of reactive flows has been developed during the course of this project, and has been applied to a number of significant and challenging problems including the transverse jet simulations. An efficient strategy for parallel domain decomposition has also been developed to enable the implementation of the approach on massively parallel architecture. Since 2005, we focused our efforts on the development of a semi-Lagrangian treatment of diffusion, and fast and accurate Lagrangian simulation tools for multiphysics problems including combustion.

  14. Overview of Simulation Strategies for

    E-Print Network [OSTI]

    Rudnyi, Evgenii B.

    topography simulations; Multi-scale simulation (atomistic-continuum); fast coupling of equipment-topography-electrical-reliability modeling Front-end process modeling Integrated modeling of equipment and materials Lithography simulation

  15. Simulating the Quantum Magnet

    E-Print Network [OSTI]

    Friedenauer, Axel; Glückert, Jan Tibor; Porras, Diego; Schätz, Tobias

    2008-01-01T23:59:59.000Z

    To gain deeper insight into the dynamics of complex quantum systems we need a quantum leap in computer simulations. We can not translate quantum behaviour arising with superposition states or entanglement efficiently into the classical language of conventional computers. The final solution to this problem is a universal quantum computer [1], suggested in 1982 and envisioned to become functional within the next decade(s); a shortcut was proposed via simulating the quantum behaviour of interest in a different quantum system, where all parameters and interactions can be controlled and the outcome detected sufficiently well. Here we study the feasibility of a quantum simulator based on trapped ions [2]. We experimentally simulate the adiabatic evolution of the smallest non-trivial spin system from the paramagnetic into the (anti-)ferromagnetic order with a quantum magnetisation for two spins of 98%, controlling and manipulating all relevant parameters of the Hamiltonian independently via electromagnetic fields. W...

  16. Theory Modeling and Simulation

    SciTech Connect (OSTI)

    Shlachter, Jack [Los Alamos National Laboratory

    2012-08-23T23:59:59.000Z

    Los Alamos has a long history in theory, modeling and simulation. We focus on multidisciplinary teams that tackle complex problems. Theory, modeling and simulation are tools to solve problems just like an NMR spectrometer, a gas chromatograph or an electron microscope. Problems should be used to define the theoretical tools needed and not the other way around. Best results occur when theory and experiments are working together in a team.

  17. Scalable, efficient epidemiological simulation

    SciTech Connect (OSTI)

    Eubank, S. G. (Stephen G.)

    2001-01-01T23:59:59.000Z

    We describe the design and implementation of a system for simulating the spread of disease among individuals in a large urban population over the course of several weeks, In contrast to traditional approaches, we do not assume uniform mixing among large sub-populations or split the population into spatial or demographic subpopulations determined a priori. Instead, we rely on empirical estimates of the social network, or contact patterns, that are produced by TRANSIMS, a large-scale simulation of transportation systems.

  18. Xyce parallel electronic simulator.

    SciTech Connect (OSTI)

    Keiter, Eric Richard; Mei, Ting; Russo, Thomas V.; Rankin, Eric Lamont; Schiek, Richard Louis; Thornquist, Heidi K.; Fixel, Deborah A.; Coffey, Todd Stirling; Pawlowski, Roger Patrick; Santarelli, Keith R.

    2010-05-01T23:59:59.000Z

    This document is a reference guide to the Xyce Parallel Electronic Simulator, and is a companion document to the Xyce Users' Guide. The focus of this document is (to the extent possible) exhaustively list device parameters, solver options, parser options, and other usage details of Xyce. This document is not intended to be a tutorial. Users who are new to circuit simulation are better served by the Xyce Users' Guide.

  19. Sandia National Laboratories: combustion simulation

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

    combustion simulation Direct Measurement of Key Molecule Will Increase Accuracy of Combustion Models On March 3, 2015, in Computational Modeling & Simulation, CRF, Energy,...

  20. Sampled simulation for multithreaded processors

    E-Print Network [OSTI]

    Van Biesbrouck, Michael

    2007-01-01T23:59:59.000Z

    1. Starting O? set E?ects in SMT Simulation 2. Evaluatingdual hardware context SMT Processor. . . . . . . . . . . . .results of co-phase matrix simulation. SMT processor con?

  1. High performance distributed simulation for interactive simulated vascular reconstruction

    E-Print Network [OSTI]

    Amsterdam, Universiteit van

    performance. 1 Introduction Interactive simulation environments are dynamic systems that combine simula- tion.1 Performance of interactive simulation environments The most important factor in the performance of a dynamic dynamic simulation environment. 1 1 2 2 3 visualization rendering simulation time rendering delay

  2. Simulating the Quantum Magnet

    E-Print Network [OSTI]

    Axel Friedenauer; Hector Schmitz; Jan Tibor Glückert; Diego Porras; Tobias Schätz

    2008-02-27T23:59:59.000Z

    To gain deeper insight into the dynamics of complex quantum systems we need a quantum leap in computer simulations. We can not translate quantum behaviour arising with superposition states or entanglement efficiently into the classical language of conventional computers. The final solution to this problem is a universal quantum computer [1], suggested in 1982 and envisioned to become functional within the next decade(s); a shortcut was proposed via simulating the quantum behaviour of interest in a different quantum system, where all parameters and interactions can be controlled and the outcome detected sufficiently well. Here we study the feasibility of a quantum simulator based on trapped ions [2]. We experimentally simulate the adiabatic evolution of the smallest non-trivial spin system from the paramagnetic into the (anti-)ferromagnetic order with a quantum magnetisation for two spins of 98%, controlling and manipulating all relevant parameters of the Hamiltonian independently via electromagnetic fields. We prove that the observed transition is not driven by thermal fluctuations, but of quantum mechanical origin, the source of quantum fluctuations in quantum phase transitions [3]. We observe a final superposition state of the two degenerate spin configurations for the ferromagnetic and the antiferromagnetic order, respectively. These correspond to deterministically entangled states achieved with a fidelity up to 88%. Our work demonstrates a building block for simulating quantum spin-Hamiltonians with trapped ions. The method has potential for scaling to a higher number of coupled spins [2].

  3. Simulating neural systems with Xyce.

    SciTech Connect (OSTI)

    Schiek, Richard Louis; Thornquist, Heidi K.; Mei, Ting; Warrender, Christina E.; Aimone, James Bradley; Teeter, Corinne; Duda, Alex M. [University of Illinois, Urbana-Champaign

    2012-12-01T23:59:59.000Z

    Sandia's parallel circuit simulator, Xyce, can address large scale neuron simulations in a new way extending the range within which one can perform high-fidelity, multi-compartment neuron simulations. This report documents the implementation of neuron devices in Xyce, their use in simulation and analysis of neuron systems.

  4. Smoke-plume distributions above large-scale fires: Implications for simulations of ''nuclear winter''

    SciTech Connect (OSTI)

    Penner, J.E.; Haselman L. Jr.; Edwards, L.L.

    1986-10-01T23:59:59.000Z

    Smoke from raging fires produced in the aftermath of a major nuclear exchange has been predicted to cause large decreases in surface temperatures. However, the extent of the decrease and even the sign of the temperature change depend on how the smoke is distributed with altitude. We present a model capable of evaluating the initial distribution of lofted smoke above a massive fire. Calculations are shown for a two-dimensional slab version of the model and a full three-dimensional version. The model has been evaluated by simulating smoke heights for the Hamburg firestorm of 1943, and a smaller-scale oil fire which occurred in Long Beach in 1958. Our plume heights for these fires are compared to those predicted by the classical Morton-Taylor-Turner theory for weakly buoyant plumes. We consider the effect of the added buoyancy caused by condensation of waterladen ground level air being carried to high altitude with the convection column, as well as the effects of background wind on the calculated smoke plume heights for several fire intensities. We find that the rise height of the plume depends on the assumed background atmospheric conditions, as well as the fire intensity.

  5. Snowmass Energy Frontier Simulations

    E-Print Network [OSTI]

    Jacob Anderson; Aram Avetisyan; Raymond Brock; Sergei Chekanov; Timothy Cohen; Nitish Dhingra; James Dolen; James Hirschauer; Kiel Howe; Ashutosh Kotwal; Tom LeCompte; Sudhir Malik; Patricia Mcbride; Kalanand Mishra; Meenakshi Narain; Jim Olsen; Sanjay Padhi; Michael E. Peskin; John Stupak III; Jay G. Wacker

    2013-09-01T23:59:59.000Z

    This document describes the simulation framework used in the Snowmass Energy Frontier studies for future Hadron Colliders. An overview of event generation with {\\sc Madgraph}5 along with parton shower and hadronization with {\\sc Pythia}6 is followed by a detailed description of pile-up and detector simulation with {\\sc Delphes}3. Details of event generation are included in a companion paper cited within this paper. The input parametrization is chosen to reflect the best object performance expected from the future ATLAS and CMS experiments; this is referred to as the "Combined Snowmass Detector". We perform simulations of $pp$ interactions at center-of-mass energies $\\sqrt{s}=$ 14, 33, and 100 TeV with 0, 50, and 140 additional $pp$ pile-up interactions. The object performance with multi-TeV $pp$ collisions are studied for the first time using large pile-up interactions.

  6. Liquid filtration simulation

    SciTech Connect (OSTI)

    Corey, I.; Bergman, W.

    1996-06-01T23:59:59.000Z

    We have a developed a computer code that simulates 3-D filtration of suspended particles in fluids in realistic filter structures. This code, being the most advanced filtration simulation package developed to date, provides LLNL and DOE with new capabilities to address problems in cleaning liquid wastes, medical fluid cleaning, and recycling liquids. The code is an integrated system of commercially available and LLNL-developed software; the most critical are the computational fluid dynamics (CFD) solver and the particle transport program. For the CFD solver, we used a commercial package based on Navier-Stokes equations and a LLNL-developed package based on Boltzman-lattice gas equations. For the particle transport program, we developed a cod based on the 3-D Langevin equation of motion and the DLVO theory of electrical interactions. A number of additional supporting packages were purchased or developed to integrate the simulation tasks and to provide visualization output.

  7. Building Galaxies with Simulations

    E-Print Network [OSTI]

    Romeel Davé; Kristian Finlator; Lars Hernquist; Neal Katz; Dušan Kereš; Casey Papovich; David H. Weinberg

    2005-10-20T23:59:59.000Z

    We present an overview of some of the issues surrounding current models of galaxy formation, highlighting recent insights obtained from cosmological hydrodynamic simulations. Detailed examination of gas accretion processes show a hot mode of gas cooling from near the halo's virial temperature, and a previously underappreciated cold mode where gas flows in along filaments on dynamical timescales, emitting its energy in line radiation. Cold mode dominates in systems with halo masses slightly smaller than the Milky Way and below, and hence dominates the global accretion during the heydey of galaxy formation. This rapid accretion path enables prompt assembly of massive galaxies in the early universe, and results in $z\\sim 4$ galaxy properties in broad agreement with observations, with the most massive galaxies being the most rapid star formers. Massive galaxies today are forming stars at a much reduced rate, a trend called downsizing. The trend of downsizing is naturally reproduced in simulations, owing to a transition from cold mode accretion in the early growth phase to slower hot mode accretion once their halos grow large. However, massive galaxies at the present epoch are still observed to have considerably redder colors than simulations suggest, suggesting that star formation is not sufficiently truncated in models by the transition to hot mode, and that another process not included in current simulations is required to suppress star formation.

  8. The gem5 simulator

    E-Print Network [OSTI]

    Nathan Binkert; Bradford Beckmann; Gabriel Black; Steven K. Reinhardt; Ali Saidi; Arkaprava Basu; Joel Hestness; Derek R. Hower; Tushar Krishna; Somayeh Sardashti; Rathijit Sen; Korey Sewell; Muhammad Shoaib; Nilay Vaish; Mark D. Hill; David A. Wood

    2011-01-01T23:59:59.000Z

    The gem5 simulation infrastructure is the merger of the best aspects of the M5 [4] and GEMS [9] simulators. M5 provides a highly configurable simulation framework, multiple ISAs, and diverse CPU models. GEMS complements these features with a detailed and flexible memory system, including support for multiple cache coherence protocols and interconnect models. Currently, gem5 supports most commercial ISAs (ARM, ALPHA, MIPS, Power, SPARC, and x86), including booting Linux on three of them (ARM, ALPHA, and x86). The project is the result of the combined efforts of many academic and industrial institutions, including AMD, ARM, HP, MIPS, Princeton, MIT, and the Universities of Michigan, Texas, and Wisconsin. Over the past ten years, M5 and GEMS have been used in hundreds of publications and have been downloaded tens of thousands of times. The high level of collaboration on the gem5 project, combined with the previous success of the component parts and a liberal BSD-like license, make gem5 a valuable full-system simulation tool. 1

  9. Simulation of geothermal subsidence

    SciTech Connect (OSTI)

    Miller, I.; Dershowitz, W.; Jones, K.; Myer, L.; Roman, K.; Schauer, M.

    1980-03-01T23:59:59.000Z

    The results of an assessment of existing mathematical models for subsidence simulation and prediction are summarized. The following subjects are discussed: the prediction process, physical processes of geothermal subsidence, computational models for reservoir flow, computational models for deformation, proficiency assessment, and real and idealized case studies. (MHR)

  10. Simulating Inhomogeneous Reionization

    E-Print Network [OSTI]

    Michael L. Norman; Paschalis Paschos; Tom Abel

    1998-07-28T23:59:59.000Z

    We describe an approach for incorporating radiative transfer into 3D hydrodynamic cosmological simulations. The method, while approximate, allows for a self-consistent treatment of self-shielding and shadowing, diffuse and point sources of radiation, and frequency dependent transfer. Applications include photodissociation, photoheating, and photoionization of the IGM.

  11. Enabling immersive simulation.

    SciTech Connect (OSTI)

    McCoy, Josh (University of California Santa Cruz, Santa Cruz, CA); Mateas, Michael (University of California Santa Cruz, Santa Cruz, CA); Hart, Derek H.; Whetzel, Jonathan; Basilico, Justin Derrick; Glickman, Matthew R.; Abbott, Robert G.

    2009-02-01T23:59:59.000Z

    The object of the 'Enabling Immersive Simulation for Complex Systems Analysis and Training' LDRD has been to research, design, and engineer a capability to develop simulations which (1) provide a rich, immersive interface for participation by real humans (exploiting existing high-performance game-engine technology wherever possible), and (2) can leverage Sandia's substantial investment in high-fidelity physical and cognitive models implemented in the Umbra simulation framework. We report here on these efforts. First, we describe the integration of Sandia's Umbra modular simulation framework with the open-source Delta3D game engine. Next, we report on Umbra's integration with Sandia's Cognitive Foundry, specifically to provide for learning behaviors for 'virtual teammates' directly from observed human behavior. Finally, we describe the integration of Delta3D with the ABL behavior engine, and report on research into establishing the theoretical framework that will be required to make use of tools like ABL to scale up to increasingly rich and realistic virtual characters.

  12. SIMULATING EVOLUTION OF TECHNOLOGY

    E-Print Network [OSTI]

    that simulates turnover of equipment stock as a function of detailed data on equipment costs and stock in (1) technology stocks, (2) products or services, or (3) the mix of fuels used. This thesis involves ability to pick out the right road to take (in most ca

  13. TROPICAL STORMS SUPER SIMULATIONS

    E-Print Network [OSTI]

    Fukai, Tomoki

    physical sciences 15 A new flavor of superconductor Computer simulations show how fundamental particles behave like electrons in a superconductor 16 Higgs versus the Big Bang The Higgs boson could help explain The magnetic interactions in beryllium-11 could explain its unusual shape 19 A solitary superconductor emerges

  14. A. Weitzenfeld: NSL Neural Simulation Language 1 Neural Simulation Language

    E-Print Network [OSTI]

    Weitzenfeld, Alfredo

    : +52-55-56284060 Fax: +52-55-56162211 email: alfredo@itam.mx #12;A. Weitzenfeld: NSL Neural Simulation

  15. PEBBLES Mechanics Simulation Speedup

    SciTech Connect (OSTI)

    Joshua J. Cogliati; Abderrafi M. Ougouag

    2010-05-01T23:59:59.000Z

    Pebble bed reactors contain large numbers of spherical fuel elements arranged randomly. Determining the motion and location of these fuel elements is required for calculating certain parameters of pebble bed reactor operation. These simulations involve hundreds of thousands of pebbles and involve determining the entire core motion as pebbles are recirculated. Single processor algorithms for this are insufficient since they would take decades to centuries of wall-clock time. This paper describes the process of parallelizing and speeding up the PEBBLES pebble mechanics simulation code. Both shared memory programming with the Open Multi-Processing API and distributed memory programming with the Message Passing Interface API are used in simultaneously in this process. A new shared memory lock-less linear time collision detection algorithm is described. This method allows faster detection of pebbles in contact than generic methods. These combine to make full recirculations on AVR sized reactors possible in months of wall clock time.

  16. The Umbra Simulation Framework

    SciTech Connect (OSTI)

    GOTTLIEB,ERIC; HARRIGAN,RAYMOND W.; MCDONALD,MICHAEL J.; OPPEL III,FRED J.; XAVIER,PATRICK G.

    2001-06-01T23:59:59.000Z

    Umbra is a new Sandia-developed modeling and simulation framework. The Umbra framework allows users to quickly build models and simulations for intelligent system development, analysis, experimentation, and control and supports tradeoff analyses of complex robotic systems, device, and component concepts. Umbra links together heterogeneous collections of modeling tools. The models in Umbra include 3D geometry and physics models of robots, devices and their environments. Model components can be built with varying levels of fidelity and readily switched to allow models built with low fidelity for conceptual analysis to be gradually converted to high fidelity models for later phase detailed analysis. Within control environments, the models can be readily replaced with actual control elements. This paper describes Umbra at a functional level and describes issues that Sandia uses Umbra to address.

  17. Simulating Concordant Computations

    E-Print Network [OSTI]

    Bryan Eastin

    2010-06-23T23:59:59.000Z

    A quantum state is called concordant if it has zero quantum discord with respect to any part. By extension, a concordant computation is one such that the state of the computer, at each time step, is concordant. In this paper, I describe a classical algorithm that, given a product state as input, permits the efficient simulation of any concordant quantum computation having a conventional form and composed of gates acting on two or fewer qubits. This shows that such a quantum computation must generate quantum discord if it is to efficiently solve a problem that requires super-polynomial time classically. While I employ the restriction to two-qubit gates sparingly, a crucial component of the simulation algorithm appears not to be extensible to gates acting on higher-dimensional systems.

  18. Design of mechanical arterial simulator

    E-Print Network [OSTI]

    Chai, Lauren (Lauren Amy)

    2012-01-01T23:59:59.000Z

    A force controlled ultrasound probe is being explored as a new method of measuring blood pressure. An arterial simulator was designed and built for experiments. For this simulator, the vessels and bulk material were designed ...

  19. Simulation des Frsens mit Industrierobotern

    E-Print Network [OSTI]

    Stryk, Oskar von

    Parameteridentifikation Simulation of milling with industrial robots: trajectory planning and experimental parameter experimentelle Parameteridentifikation Simulation of milling with industrial robots: trajectory planning Bauteile erweitert. Abstract Recently, industrial robots are increasingly used for cutting soft material

  20. Simulation of Sextet Diquark Production

    E-Print Network [OSTI]

    Peter Richardson; David Winn

    2011-11-22T23:59:59.000Z

    We present a method for simulating the production and decay of particles in the sextet representation of $SU(3)_C$ including the simulation of QCD radiation. First results from the Monte Carlo simulation of sextet diquark production at the LHC including both resonant and pair production are presented. We include limits on resonant diquark production from recent ATLAS results and perform the first simulation studies of the less model dependent pair production mechanism.

  1. Bio-threat microparticle simulants

    DOE Patents [OSTI]

    Farquar, George Roy; Leif, Roald

    2014-09-16T23:59:59.000Z

    A bio-threat simulant that includes a carrier and DNA encapsulated in the carrier. Also a method of making a simulant including the steps of providing a carrier and encapsulating DNA in the carrier to produce the bio-threat simulant.

  2. Bio-threat microparticle simulants

    DOE Patents [OSTI]

    Farquar, George Roy; Leif, Roald N

    2012-10-23T23:59:59.000Z

    A bio-threat simulant that includes a carrier and DNA encapsulated in the carrier. Also a method of making a simulant including the steps of providing a carrier and encapsulating DNA in the carrier to produce the bio-threat simulant.

  3. Computer Simulations of Protein Folding

    E-Print Network [OSTI]

    Sorin, Eric J.

    CHAPTER 8 Computer Simulations of Protein Folding VIJAY S. PANDE , ERIC J. SORIN , CHRISTOPHER D, CA 94305, USA 8.1 Introduction: Goals and Challenges of Simulating Protein Folding Computer as well as recent applications of this methodology. 8.1.1 Simulating Protein Folding Proteins play

  4. Plasma Simulation Program

    SciTech Connect (OSTI)

    Greenwald, Martin

    2011-10-04T23:59:59.000Z

    Many others in the fusion energy and advanced scientific computing communities participated in the development of this plan. The core planning team is grateful for their important contributions. This summary is meant as a quick overview the Fusion Simulation Program's (FSP's) purpose and intentions. There are several additional documents referenced within this one and all are supplemental or flow down from this Program Plan. The overall science goal of the DOE Office of Fusion Energy Sciences (FES) Fusion Simulation Program (FSP) is to develop predictive simulation capability for magnetically confined fusion plasmas at an unprecedented level of integration and fidelity. This will directly support and enable effective U.S. participation in International Thermonuclear Experimental Reactor (ITER) research and the overall mission of delivering practical fusion energy. The FSP will address a rich set of scientific issues together with experimental programs, producing validated integrated physics results. This is very well aligned with the mission of the ITER Organization to coordinate with its members the integrated modeling and control of fusion plasmas, including benchmarking and validation activities. [1]. Initial FSP research will focus on two critical Integrated Science Application (ISA) areas: ISA1, the plasma edge; and ISA2, whole device modeling (WDM) including disruption avoidance. The first of these problems involves the narrow plasma boundary layer and its complex interactions with the plasma core and the surrounding material wall. The second requires development of a computationally tractable, but comprehensive model that describes all equilibrium and dynamic processes at a sufficient level of detail to provide useful prediction of the temporal evolution of fusion plasma experiments. The initial driver for the whole device model will be prediction and avoidance of discharge-terminating disruptions, especially at high performance, which are a critical impediment to successful operation of machines like ITER. If disruptions prove unable to be avoided, their associated dynamics and effects will be addressed in the next phase of the FSP.

  5. Fusion Simulation Program

    SciTech Connect (OSTI)

    Project Staff (V.S. Chan)

    2012-02-29T23:59:59.000Z

    Under this project, General Atomics (GA) was tasked to develop the experimental validation plans for two high priority ISAs, Boundary and Pedestal and Whole Device Modeling in collaboration with the theory, simulation and experimental communities. The following sections have been incorporated into the final FSP Program Plan (www.pppl.gov/fsp), which was delivered to the US Department of Energy (DOE). Additional deliverables by GA include guidance for validation, development of metrics to evaluate success and procedures for collaboration with experiments. These are also part of the final report.

  6. Simulation-Based Engineering

    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 ScienceandMesa del Sol HomeFacebookScholarship Fund3 Outlook for Gulf ofMailingSimulation-Based

  7. Modeling & Simulation publications

    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 82981-1cnHighandSWPA / SPRA /Ml'. William Hirst HirstModeling & Simulation »

  8. Laparoscopic simulation interface

    DOE Patents [OSTI]

    Rosenberg, Louis B.

    2006-04-04T23:59:59.000Z

    A method and apparatus for providing high bandwidth and low noise mechanical input and output for computer systems. A gimbal mechanism provides two revolute degrees of freedom to an object about two axes of rotation. A linear axis member is coupled to the gimbal mechanism at the intersection of the two axes of rotation. The linear axis member is capable of being translated along a third axis to provide a third degree of freedom. The user object is coupled to the linear axis member and is thus translatable along the third axis so that the object can be moved along all three degrees of freedom. Transducers associated with the provided degrees of freedom include sensors and actuators and provide an electromechanical interface between the object and a digital processing system. Capstan drive mechanisms transmit forces between the transducers and the object. The linear axis member can also be rotated about its lengthwise axis to provide a fourth degree of freedom, and, optionally, a floating gimbal mechanism is coupled to the linear axis member to provide fifth and sixth degrees of freedom to an object. Transducer sensors are associated with the fourth, fifth, and sixth degrees of freedom. The interface is well suited for simulations of medical procedures and simulations in which an object such as a stylus or a joystick is moved and manipulated by the user.

  9. FPGA Acceleration of Discrete Molecular Dynamics Simulation

    E-Print Network [OSTI]

    Herbordt, Martin

    ' & $ % FPGA Acceleration of Discrete Molecular Dynamics Simulation Joshua Model Thesis submitted UNIVERSITY COLLEGE OF ENGINEERING Thesis FPGA Acceleration of Discrete Molecular Dynamics Simulation Acceleration of Discrete Molecular Dynamics Simulation Joshua Model ABSTRACT Molecular dynamics simulation

  10. Distributed Energy Technology Simulator: Microturbine Demonstration...

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

    Simulator: Microturbine Demonstration, October 2001 Distributed Energy Technology Simulator: Microturbine Demonstration, October 2001 This 2001 paper discusses the National Rural...

  11. Supergranulation Scale Connection Simulations

    E-Print Network [OSTI]

    R. F. Stein; A. Nordlund; D. Georgobiani; D. Benson; W. Schaffenberger

    2008-11-04T23:59:59.000Z

    Results of realistic simulations of solar surface convection on the scale of supergranules (96 Mm wide by 20 Mm deep) are presented. The simulations cover only 10% of the geometric depth of the solar convection zone, but half its pressure scale heights. They include the hydrogen, first and most of the second helium ionization zones. The horizontal velocity spectrum is a power law and the horizontal size of the dominant convective cells increases with increasing depth. Convection is driven by buoyancy work which is largest close to the surface, but significant over the entire domain. Close to the surface buoyancy driving is balanced by the divergence of the kinetic energy flux, but deeper down it is balanced by dissipation. The damping length of the turbulent kinetic energy is 4 pressure scale heights. The mass mixing length is 1.8 scale heights. Two thirds of the area is upflowing fluid except very close to the surface. The internal (ionization) energy flux is the largest contributor to the convective flux for temperatures less than 40,000 K and the thermal energy flux is the largest contributor at higher temperatures. This data set is useful for validating local helioseismic inversion methods. Sixteen hours of data are available as four hour averages, with two hour cadence, at steinr.msu.edu/~bob/96averages, as idl save files. The variables stored are the density, temperature, sound speed, and three velocity components. In addition, the three velocity components at 200 km above mean continuum optical depth unity are available at 30 sec. cadence.

  12. Non-detonable explosive simulators

    DOE Patents [OSTI]

    Simpson, Randall L. (Livermore, CA); Pruneda, Cesar O. (Livermore, CA)

    1994-01-01T23:59:59.000Z

    A simulator which is chemically equivalent to an explosive, but is not detonable. The simulator has particular use in the training of explosives detecting dogs and calibrating sensitive analytical instruments. The explosive simulants may be fabricated by different techniques, a first involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and the second involves coating inert beads with thin layers of explosive molecules.

  13. Non-detonable explosive simulators

    DOE Patents [OSTI]

    Simpson, R.L.; Pruneda, C.O.

    1994-11-01T23:59:59.000Z

    A simulator which is chemically equivalent to an explosive, but is not detonable. The simulator has particular use in the training of explosives detecting dogs and calibrating sensitive analytical instruments. The explosive simulants may be fabricated by different techniques, a first involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and the second involves coating inert beads with thin layers of explosive molecules. 5 figs.

  14. Power Plant Modeling and Simulation

    ScienceCinema (OSTI)

    None

    2010-01-08T23:59:59.000Z

    The National Energy Technology Laboratory's Office of Research and Development provides open source tools and expetise for modeling and simulating power plants and carbon sequestration technologies.

  15. Occupancy Simulation Schedule Appendix C -Occupancy Simulation Schedule

    E-Print Network [OSTI]

    Figure C.1 and Figure C.2 present the load simulation and occupancy schedules for the lab homes highly adults. The per-person sensible heat generation and occupancy profiles were mapped from previous studies lamp to simulate human occupancy; occupancy and lighting loads in other areas of the home were

  16. Agent-based Simulation Platforms Agent-based Simulation Platforms

    E-Print Network [OSTI]

    Boone, Randall B.

    Agent-based Simulation Platforms Agent-based Simulation Platforms: Review and Development 1081 Fritz Ave. McKinleyville, CA 95519, USA Five software platforms for scientific agent-based models (ABMs) were reviewed by implementing example models in each. NetLogo is the highest-level platform

  17. Thyristor converter simulation and analysis

    SciTech Connect (OSTI)

    Zhang, S.Y.

    1991-01-01T23:59:59.000Z

    In this paper we present a simulation on thyristor converters. The simulation features nonlinearity, non-uniform firing, and the commutations. Several applications such as a current regulation, a converter frequency characteristics analysis, and a power line disturbance analysis will be presented. 4 refs., 4 figs.

  18. CONSTRUCTING VIRTUAL HUMAN LIFE SIMULATIONS

    E-Print Network [OSTI]

    Kallmann, Marcelo

    , Virtual Environments, Behavioral Animation, Object Interaction, Python. 1. INTRODUCTION Virtual humanCONSTRUCTING VIRTUAL HUMAN LIFE SIMULATIONS Marcelo Kallmann, Etienne de Sevin and Daniel Thalmann human life simulations. Our main goal is to have virtual human actors living and working autonomously

  19. GROUNDWATER REMEDIATION DESIGN USING SIMULATED

    E-Print Network [OSTI]

    Mays, Larry W.

    CHAPTER 8 GROUNDWATER REMEDIATION DESIGN USING SIMULATED ANNEALING Richard L. Skaggs Pacific? There has been an emergence in the use of combinatorial methods such as simulated annealing in groundwater for groundwater management applications. The algorithm incor- porates "directional search" and "memory

  20. Simulation of open quantum systems

    E-Print Network [OSTI]

    Florian Mintert; Eric J. Heller

    2008-03-27T23:59:59.000Z

    We present an approach for the semiclassical treatment of open quantum systems. An expansion into localized states allows restriction of a simulation to a fraction of the environment that is located within a predefined vicinity of the system. Adding and dropping environmental particles during the simulation yields an effective reduction of the size of the system that is being treated.

  1. MESOSCALE SIMULATIONS OF POWDER COMPACTION

    SciTech Connect (OSTI)

    Lomov, Ilya; Fujino, Don; Antoun, Tarabay; Liu, Benjamin [Lawrence Livermore National Laboratory, P. O. Box 808, Livermore CA 94551 (United States)

    2009-12-28T23:59:59.000Z

    Mesoscale 3D simulations of shock compaction of metal and ceramic powders have been performed with an Eulerian hydrocode GEODYN. The approach was validated by simulating a well-characterized shock compaction experiment of a porous ductile metal. Simulation results using the Steinberg material model and handbook values for solid 2024 aluminum showed good agreement with experimental compaction curves and wave profiles. Brittle ceramic materials are not as well studied as metals, so a simple material model for solid ceramic (tungsten carbide) has been calibrated to match experimental compaction curves. Direct simulations of gas gun experiments with ceramic powders have been performed and showed good agreement with experimental data. The numerical shock wave profile has same character and thickness as that measured experimentally using VISAR. The numerical results show reshock states above the single-shock Hugoniot line as observed in experiments. We found that for good quantitative agreement with experiments 3D simulations are essential.

  2. Simulation of a plant minicomputer in reactor control room simulator

    SciTech Connect (OSTI)

    Forrester, A.; Anderson, J.L.

    1984-12-07T23:59:59.000Z

    A control room simulator for the N-Reactor at Hanford is being developed. An important aspect of reactor operation is provided by the plant minicomputer. This paper discusses the simulation of the plant minicomputer. The original commitments in developing the model are set out, as well as the actual requirements at the start of implementation of the model. Original estimates of costs and times for the simulation are presented; actual costs and times were lower by large factors, and the reasons for better performance are examined.

  3. Calibration of Moving Puncture Simulations

    E-Print Network [OSTI]

    Bernd Bruegmann; Jose A. Gonzalez; Mark Hannam; Sascha Husa; Ulrich Sperhake; Wolfgang Tichy

    2006-10-26T23:59:59.000Z

    We present single and binary black hole simulations that follow the moving puncture paradigm of simulating black-hole spacetimes without excision, and use moving boxes mesh refinement. Focussing on binary black hole configurations where the simulations cover roughly two orbits, we address five major issues determining the quality of our results: numerical discretization error, finite extraction radius of the radiation signal, physical appropriateness of initial data, gauge choice and computational performance. We also compare results we have obtained with the BAM code described here with the independent LEAN code.

  4. The Xygra gun simulation tool.

    SciTech Connect (OSTI)

    Garasi, Christopher Joseph; Lamppa, Derek C.; Aubuchon, Matthew S.; Shirley, David Noyes; Robinson, Allen Conrad; Russo, Thomas V.

    2008-12-01T23:59:59.000Z

    Inductive electromagnetic launchers, or coilguns, use discrete solenoidal coils to accelerate a coaxial conductive armature. To date, Sandia has been using an internally developed code, SLINGSHOT, as a point-mass lumped circuit element simulation tool for modeling coilgun behavior for design and verification purposes. This code has shortcomings in terms of accurately modeling gun performance under stressful electromagnetic propulsion environments. To correct for these limitations, it was decided to attempt to closely couple two Sandia simulation codes, Xyce and ALEGRA, to develop a more rigorous simulation capability for demanding launch applications. This report summarizes the modifications made to each respective code and the path forward to completing interfacing between them.

  5. Numerical wind speed simulation model

    SciTech Connect (OSTI)

    Ramsdell, J.V.; Athey, G.F.; Ballinger, M.Y.

    1981-09-01T23:59:59.000Z

    A relatively simple stochastic model for simulating wind speed time series that can be used as an alternative to time series from representative locations is described in this report. The model incorporates systematic seasonal variation of the mean wind, its standard deviation, and the correlation speeds. It also incorporates systematic diurnal variation of the mean speed and standard deviation. To demonstrate the model capabilities, simulations were made using model parameters derived from data collected at the Hanford Meteorology Station, and results of analysis of simulated and actual data were compared.

  6. FPGA ACCELERATION OF MOLECULAR DYNAMICS SIMULATIONS

    E-Print Network [OSTI]

    Herbordt, Martin

    ' & $ % FPGA ACCELERATION OF MOLECULAR DYNAMICS SIMULATIONS YONGFENG GU Dissertation submitted;BOSTON UNIVERSITY COLLEGE OF ENGINEERING Dissertation FPGA ACCELERATION OF MOLECULAR DYNAMICS SIMULATIONS DYNAMICS SIMULATIONS (Order No. ) YONGFENG GU Boston University, College of Engineering, 2008 Major

  7. Adaptive Sampling in Hierarchical Simulation

    SciTech Connect (OSTI)

    Knap, J; Barton, N R; Hornung, R D; Arsenlis, A; Becker, R; Jefferson, D R

    2007-07-09T23:59:59.000Z

    We propose an adaptive sampling methodology for hierarchical multi-scale simulation. The method utilizes a moving kriging interpolation to significantly reduce the number of evaluations of finer-scale response functions to provide essential constitutive information to a coarser-scale simulation model. The underlying interpolation scheme is unstructured and adaptive to handle the transient nature of a simulation. To handle the dynamic construction and searching of a potentially large set of finer-scale response data, we employ a dynamic metric tree database. We study the performance of our adaptive sampling methodology for a two-level multi-scale model involving a coarse-scale finite element simulation and a finer-scale crystal plasticity based constitutive law.

  8. Cowgame: animal breeding simulation software

    E-Print Network [OSTI]

    Kleibrink, Kevin Michael

    1997-01-01T23:59:59.000Z

    ) to calculate Expected Progeny Differences (EPDS) and accuracies so that the analysis is completely independent of simulation. Output of phenotypes, EPDS, accuracies, and progeny averages are available for each animal in the population and are reported to each...

  9. Reservoir management using streamline simulation

    E-Print Network [OSTI]

    Choudhary, Manoj Kumar

    2000-01-01T23:59:59.000Z

    of information and sparsity of data. Quantifying this uncertainty in terms of reservoir performance forecast poses a major reservoir management challenge. One solution to this problem is flow simulation of a large number of these plausible reservoir descriptions...

  10. DYNAMIC SIMULATION OF PERFORMANCE DEVELOPMENT

    E-Print Network [OSTI]

    Perl, Jürgen

    for scheduling optimal training planes. (a) offline analysis (b) online prediction load profile original) online prediction load profile original performance profile simulated performance profile predicted performance profile Figure 1: Offline load-performance-analysis (a) compared to online performance

  11. Computer simulation of submarine motion

    E-Print Network [OSTI]

    Zurflueh, Jeffery Alan

    1991-01-01T23:59:59.000Z

    Subject: Mechanical Engineering COMPUTER SIMULATION OF SUBMARINE MOTION A Thesis by JEFFERY ALAN ZURFLUEH Approved as to style and content by: Make McDermott, Jr. ( Chair of Committee ) Glen Williams ( Member ) Lo 4verett ( Member ) gu r Walter...COMPUTER SIMULATION OF SUBMARINE MOTION A Thesis by JEFFERY ALAN ZURFLUEH Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1991 Major...

  12. Physically based simulation of explosions

    E-Print Network [OSTI]

    Roach, Matthew Douglas

    2005-08-29T23:59:59.000Z

    PHYSICALLY BASED SIMULATION OF EXPLOSIONS A Thesis by MATTHEW DOUGLAS ROACH Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 2005 Major Subject: Visualization Sciences PHYSICALLY BASED SIMULATION OF EXPLOSIONS A Thesis by MATTHEW DOUGLAS ROACH Submitted to Texas A&M University in partial fulfillment of the requirements for the degree...

  13. Terascale Simulation Tools and Technologies

    SciTech Connect (OSTI)

    Li, Xiaolin

    2007-03-09T23:59:59.000Z

    We report the development of front tracking method as a simulation tool and technology for the computation on several important SciDAC and SciDAC associated applications. The progress includes the extraction of an independent software library from the front tracking code, conservative front tracking, applications of front tracking to the simulation of fusion pellet injection in a magnetically confined plasma, the study of a fuel injection jet, and the study of fluid chaotic mixing, among other problems.

  14. Sandia National Laboratories: modeling and simulation

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

    and simulation Sandian Mark Boslough Featured on NOVA Episode about Chelyabinsk Meteor On November 20, 2013, in Computational Modeling & Simulation, Modeling, Modeling, Modeling &...

  15. House Simulation Protocols (Building America Benchmark) - Building...

    Energy Savers [EERE]

    House Simulation Protocols. See an example of this Top Innovation in action. Find more case studies of Building America projects across the country that utilize House Simulation...

  16. Sandia National Laboratories: CINT Computer Simulation Guide...

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

    ClimateECEnergyRenewable EnergyBiofuelsCINT Computer Simulation Guide for Designing Polymeric Nanoparticles Published CINT Computer Simulation Guide for Designing Polymeric...

  17. Sandia Energy - Simulating Turbine-Turbine Interaction

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

    of wind-turbine wakes within a turbulent atmospheric boundary layer using a large eddy simulation (LES) method. Current and ongoing work aims to leverage the simulation...

  18. Sandia National Laboratories: Predictive Simulation of Internal...

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

    Predictive Simulation of Internal Combustion Engines Sandia and General Motors: Advancing Clean Combustion Engines with Predictive Simulation Tools On February 14, 2013, in CRF,...

  19. Improved Solvers for Advanced Engine Combustion Simulation |...

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

    Improved Solvers for Advanced Engine Combustion Simulation Improved Solvers for Advanced Engine Combustion Simulation 2013 DOE Hydrogen and Fuel Cells Program and Vehicle...

  20. Clot Busting Simulations Test Potential Stroke Treatment

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

    Clot Busting Simulations Test Potential Stroke Treatment Clot Busting Simulations Test Potential Stroke Treatment September 24, 2013 | Tags: Biological and Environmental Research...

  1. MAPPING HVAC SYSTEMS FOR SIMULATION IN ENERGYPLUS

    E-Print Network [OSTI]

    Basarkar, Mangesh

    2013-01-01T23:59:59.000Z

    LBNL-XXXXX MAPPING HVAC SYSTEMS FOR SIMULATION IN ENERGYPLUSof California. MAPPING HVAC SYSTEMS FOR SIMULATION INpresent a conventional view of HVAC systems to the user, and

  2. Zero Power Reactor simulation | Argonne National Laboratory

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

    Zero Power Reactor simulation Share Description Ever wanted to see a nuclear reactor core in action? Here's a detailed simulation of the Zero Power Reactor experiment, run by...

  3. Nuclear Systems Modeling & Simulation | More Science | ORNL

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

    Systems Modeling and Simulation SHARE Nuclear Systems Modeling and Simulation Reactor physics depletion model for the Advanced Test Reactor Reactor physics depletion model for the...

  4. Nuclear Systems Modeling, Simulation & Validation | ORNL

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

    Systems Modeling and Simulation SHARE Nuclear Systems Modeling, Simulation and Validation Reactor physics depletion model for the Advanced Test Reactor Reactor physics depletion...

  5. LFSC - Linac Feedback Simulation Code

    SciTech Connect (OSTI)

    Ivanov, Valentin; /Fermilab

    2008-05-01T23:59:59.000Z

    The computer program LFSC (Simulation Code>) is a numerical tool for simulation beam based feedback in high performance linacs. The code LFSC is based on the earlier version developed by a collective of authors at SLAC (L.Hendrickson, R. McEwen, T. Himel, H. Shoaee, S. Shah, P. Emma, P. Schultz) during 1990-2005. That code was successively used in simulation of SLC, TESLA, CLIC and NLC projects. It can simulate as pulse-to-pulse feedback on timescale corresponding to 5-100 Hz, as slower feedbacks, operating in the 0.1-1 Hz range in the Main Linac and Beam Delivery System. The code LFSC is running under Matlab for MS Windows operating system. It contains about 30,000 lines of source code in more than 260 subroutines. The code uses the LIAR ('Linear Accelerator Research code') for particle tracking under ground motion and technical noise perturbations. It uses the Guinea Pig code to simulate the luminosity performance. A set of input files includes the lattice description (XSIF format), and plane text files with numerical parameters, wake fields, ground motion data etc. The Matlab environment provides a flexible system for graphical output.

  6. Mesoscale Simulations of Power Compaction

    SciTech Connect (OSTI)

    Lomov, I; Fujino, D; Antoun, T; Liu, B

    2009-08-06T23:59:59.000Z

    Mesoscale 3D simulations of metal and ceramic powder compaction in shock waves have been performed with an Eulerian hydrocode GEODYN. The approach was validated by simulating shock compaction of porous well-characterized ductile metal using Steinberg material model. Results of the simulations with handbook values for parameters of solid 2024 aluminum have good agreement with experimental compaction curves and wave profiles. Brittle ceramic materials are not so well studied as metals, so material model for ceramic (tungsten carbide) has been fitted to shock compression experiments of non-porous samples and further calibrated to match experimental compaction curves. Direct simulations of gas gun experiments with ceramic powder have been performed and showed good agreement with experimental data. Numerical shock wave profile has same character and thickness as measured with VISAR. Numerical results show reshock states above the single-shock Hugoniot line also observed in experiments. They found that to receive good quantitative agreement with experiment it is essential to perform 3D simulations.

  7. Radiation in molecular dynamic simulations

    SciTech Connect (OSTI)

    Glosli, J; Graziani, F; More, R; Murillo, M; Streitz, F; Surh, M

    2008-10-13T23:59:59.000Z

    Hot dense radiative (HDR) plasmas common to Inertial Confinement Fusion (ICF) and stellar interiors have high temperature (a few hundred eV to tens of keV), high density (tens to hundreds of g/cc) and high pressure (hundreds of Megabars to thousands of Gigabars). Typically, such plasmas undergo collisional, radiative, atomic and possibly thermonuclear processes. In order to describe HDR plasmas, computational physicists in ICF and astrophysics use atomic-scale microphysical models implemented in various simulation codes. Experimental validation of the models used to describe HDR plasmas are difficult to perform. Direct Numerical Simulation (DNS) of the many-body interactions of plasmas is a promising approach to model validation but, previous work either relies on the collisionless approximation or ignores radiation. We present a new numerical simulation technique to address a currently unsolved problem: the extension of molecular dynamics to collisional plasmas including emission and absorption of radiation. The new technique passes a key test: it relaxes to a blackbody spectrum for a plasma in local thermodynamic equilibrium. This new tool also provides a method for assessing the accuracy of energy and momentum exchange models in hot dense plasmas. As an example, we simulate the evolution of non-equilibrium electron, ion, and radiation temperatures for a hydrogen plasma using the new molecular dynamics simulation capability.

  8. Infrastructure for distributed enterprise simulation

    SciTech Connect (OSTI)

    Johnson, M.M.; Yoshimura, A.S.; Goldsby, M.E. [and others

    1998-01-01T23:59:59.000Z

    Traditional discrete-event simulations employ an inherently sequential algorithm and are run on a single computer. However, the demands of many real-world problems exceed the capabilities of sequential simulation systems. Often the capacity of a computer`s primary memory limits the size of the models that can be handled, and in some cases parallel execution on multiple processors could significantly reduce the simulation time. This paper describes the development of an Infrastructure for Distributed Enterprise Simulation (IDES) - a large-scale portable parallel simulation framework developed to support Sandia National Laboratories` mission in stockpile stewardship. IDES is based on the Breathing-Time-Buckets synchronization protocol, and maps a message-based model of distributed computing onto an object-oriented programming model. IDES is portable across heterogeneous computing architectures, including single-processor systems, networks of workstations and multi-processor computers with shared or distributed memory. The system provides a simple and sufficient application programming interface that can be used by scientists to quickly model large-scale, complex enterprise systems. In the background and without involving the user, IDES is capable of making dynamic use of idle processing power available throughout the enterprise network. 16 refs., 14 figs.

  9. ATLAS Fast Tracker Simulation Challenges

    E-Print Network [OSTI]

    Adelman, Jahred; The ATLAS collaboration; Borodin, Mikhail; Chakraborty, Dhiman; García Navarro, José Enrique; Golubkov, Dmitry; Kama, Sami; Panitkin, Sergey; Smirnov, Yuri; Stewart, Graeme; Tompkins, Lauren; Vaniachine, Alexandre; Volpi, Guido

    2015-01-01T23:59:59.000Z

    To deal with Big Data flood from the ATLAS detector most events have to be rejected in the trigger system. the trigger rejection is complicated by the presence of a large number of minimum-bias events – the pileup. To limit pileup effects in the high luminosity environment of the LHC Run-2, ATLAS relies on full tracking provided by the Fast TracKer (FTK) implemented with custom electronics. The FTK data processing pipeline has to be simulated in preparation for LHC upgrades to support electronics design and develop trigger strategies at high luminosity. The simulation of the FTK - a highly parallelized system - has inherent performance bottlenecks on general-purpose CPUs. To take advantage of the Grid Computing power, the FTK simulation is integrated with Monte Carlo simulations at the Production System level above the ATLAS workload management system PanDA. We report on ATLAS experience with FTK simulations on the Grid and next steps for accommodating the growing requirements for resources during the LHC R...

  10. REAL : A Network Simulator Srinivasan Keshav

    E-Print Network [OSTI]

    Keshav, Srinivasan

    simulations using REAL, and Section 7 presents a performance evaluation of the simulator. Section 8 describes a design for extending REAL to parallel distributed simulation. Section 9 is an evaluation of this work, and Section 10 describes future work. 2. Outline of the Simulator This section describes a user's view

  11. 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

  12. Real-time network simulation support for

    E-Print Network [OSTI]

    Liu, Xiaowen "Jason"

    Real-time network simulation support for scalable routing experiments Yue Li*, Jason Liu, and Raju-time network simulation with the realism of open- source routing protocol implementations. The infrastructure experiments on light-weight virtual machines. Keywords: network simulation; real-time simulation; network

  13. Lattice Simulations and Infrared Conformality

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

    Appelquist, Thomas; Fleming, George T.; Lin, Meifeng; Neil, Ethan T.; Schaich, David A.

    2011-09-01T23:59:59.000Z

    We examine several recent lattice-simulation data sets, asking whether they are consistent with infrared conformality. We observe, in particular, that for an SU(3) gauge theory with 12 Dirac fermions in the fundamental representation, recent simulation data can be described assuming infrared conformality. Lattice simulations include a fermion mass m which is then extrapolated to zero, and we note that this data can be fit by a small-m expansion, allowing a controlled extrapolation. We also note that the conformal hypothesis does not work well for two theories that are known or expected to be confining and chirally broken, and that it does work well for another theory expected to be infrared conformal.

  14. Lattice Simulations and Infrared Conformality

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

    Appelquist, Thomas; Fleming, George T.; Lin, Meifeng; Neil, Ethan T.; Schaich, David A.

    2011-09-01T23:59:59.000Z

    We examine several recent lattice-simulation data sets, asking whether they are consistent with infrared conformality. We observe, in particular, that for an SU(3) gauge theory with 12 Dirac fermions in the fundamental representation, recent simulation data can be described assuming infrared conformality. Lattice simulations include a fermion mass m which is then extrapolated to zero, and we note that this data can be fit by a small-m expansion, allowing a controlled extrapolation. We also note that the conformal hypothesis does not work well for two theories that are known or expected to be confining and chirally broken, and that itmore »does work well for another theory expected to be infrared conformal.« less

  15. Simulating Reionization in Numerical Cosmology

    E-Print Network [OSTI]

    Aaron Sokasian; Tom Abel; Lars E. Hernquist

    2001-05-10T23:59:59.000Z

    The incorporation of radiative transfer effects into cosmological hydrodynamical simulations is essential for understanding how the intergalactic medium (IGM) makes the transition from a neutral medium to one that is almost fully ionized. Here, we present an approximate numerical method designed to study in a statistical sense how a cosmological density field is ionized by a set of discrete point sources. A diffuse background radiation field is also computed self-consistently in our procedure. The method requires relatively few time steps and can be employed with simulations having high resolution. We describe the details of the algorithm and provide a description of how the method can be applied to the output from a pre-existing cosmological simulation to study the systematic reionization of a particular ionic species. As a first application, we compute the reionization of He II by quasars in the redshift range 3 to 6.

  16. Simulating chemistry using quantum computers

    E-Print Network [OSTI]

    Ivan Kassal; James D. Whitfield; Alejandro Perdomo-Ortiz; Man-Hong Yung; Alán Aspuru-Guzik

    2010-07-15T23:59:59.000Z

    The difficulty of simulating quantum systems, well-known to quantum chemists, prompted the idea of quantum computation. One can avoid the steep scaling associated with the exact simulation of increasingly large quantum systems on conventional computers, by mapping the quantum system to another, more controllable one. In this review, we discuss to what extent the ideas in quantum computation, now a well-established field, have been applied to chemical problems. We describe algorithms that achieve significant advantages for the electronic-structure problem, the simulation of chemical dynamics, protein folding, and other tasks. Although theory is still ahead of experiment, we outline recent advances that have led to the first chemical calculations on small quantum information processors.

  17. Special nuclear material simulation device

    DOE Patents [OSTI]

    Leckey, John H.; DeMint, Amy; Gooch, Jack; Hawk, Todd; Pickett, Chris A.; Blessinger, Chris; York, Robbie L.

    2014-08-12T23:59:59.000Z

    An apparatus for simulating special nuclear material is provided. The apparatus typically contains a small quantity of special nuclear material (SNM) in a configuration that simulates a much larger quantity of SNM. Generally the apparatus includes a spherical shell that is formed from an alloy containing a small quantity of highly enriched uranium. Also typically provided is a core of depleted uranium. A spacer, typically aluminum, may be used to separate the depleted uranium from the shell of uranium alloy. A cladding, typically made of titanium, is provided to seal the source. Methods are provided to simulate SNM for testing radiation monitoring portals. Typically the methods use at least one primary SNM spectral line and exclude at least one secondary SNM spectral line.

  18. Integrating software architectures for distributed simulations and simulation analysis communities.

    SciTech Connect (OSTI)

    Goldsby, Michael E.; Fellig, Daniel; Linebarger, John Michael; Moore, Patrick Curtis; Sa, Timothy J.; Hawley, Marilyn F.

    2005-10-01T23:59:59.000Z

    The one-year Software Architecture LDRD (No.79819) was a cross-site effort between Sandia California and Sandia New Mexico. The purpose of this research was to further develop and demonstrate integrating software architecture frameworks for distributed simulation and distributed collaboration in the homeland security domain. The integrated frameworks were initially developed through the Weapons of Mass Destruction Decision Analysis Center (WMD-DAC), sited at SNL/CA, and the National Infrastructure Simulation & Analysis Center (NISAC), sited at SNL/NM. The primary deliverable was a demonstration of both a federation of distributed simulations and a federation of distributed collaborative simulation analysis communities in the context of the same integrated scenario, which was the release of smallpox in San Diego, California. To our knowledge this was the first time such a combination of federations under a single scenario has ever been demonstrated. A secondary deliverable was the creation of the standalone GroupMeld{trademark} collaboration client, which uses the GroupMeld{trademark} synchronous collaboration framework. In addition, a small pilot experiment that used both integrating frameworks allowed a greater range of crisis management options to be performed and evaluated than would have been possible without the use of the frameworks.

  19. Dynamic simulation of voltage collapses

    SciTech Connect (OSTI)

    Deuse, J.; Stubbe, M. (Tractebel, Brussels (Belgium))

    1993-08-01T23:59:59.000Z

    Most of the time the voltage collapse phenomena are studied by means of computer programs designed for the calculation of steady state conditions. But in the real world, the simultaneous occurrences of losses of synchronism, of AVR dynamics or of transformer tap changes call for a full dynamic simulation of voltage phenomena. The present paper shows some examples of dynamic simulations of voltage phenomena using a new general purpose stability program (EUROSTAG), covering in a continuous way the classical fields of transient, mid-term and long-term stability, and also the quasi steady state conditions of a power system.

  20. Welcome to the Beach | Department of Energy

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

    covers the FUPWG Meeting, held on May 1-2, 2007 in Cape Canaveral, Florida. fupwgccwashingtonupdate.pdf More Documents & Publications FUPWG Welcome and Washington Update...

  1. Back to the Beach: Flamingo Collected

    E-Print Network [OSTI]

    Flamingo

    and sucked it, hungrily. Martin arched, his arms tense, forearms as tight as steel springs. Then, Sonny bit hard and Martin made a small sound and bucked. Sonny bit him again and again, making the Latino thrash wildly until Crockett had to clamp his legs... me tired enough for real sleep. It was a futile hope, he knew. Rico sat up as if on springs and cried out, his light, copper eyes snapping open in the dark. Instinctively, he lunged for his gun, found it in the dark. "Baby, what's the matter?" a...

  2. Agassiz Beach Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindeySanta2004) |

  3. Clean Cities: Long Beach Clean Cities coalition

    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 Office511041clothAdvanced Materials Advanced. C o w l i t z CPlasma0 12Denver MetroHonolulu CleanIowaLandLong

  4. Lighthouse Solar Laguna Beach | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano,Lakefront

  5. Simulation in Medical School Education: Review for Emergency Medicine

    E-Print Network [OSTI]

    Chakravarthy, Bharath; ter Haar, Elizabeth; Bhat, Srinidhi Subraya; McCoy, Christopher Erik; Denmark, T. Kent; Lotfipour, Shahram

    2011-01-01T23:59:59.000Z

    study of simulation vs. didactics for teaching medicalof simulation to traditional didactics. Other studies have

  6. File: PoS_Markov_22_MM.doc 100524 Poisson Simulation outperforms Markov Simulation

    E-Print Network [OSTI]

    [10], is a more recent method for model building and simulation that facilitates construction, modelFile: PoS_Markov_22_MM.doc 100524 Poisson Simulation outperforms Markov Simulation Leif Gustafsson.Gustafsson@bt.slu.se Abstract Markov Simulation and the more recent Poisson Simulation are two fully consistent ways

  7. WORKFLOW SIMULATION FOR INTERNATIONAL TRADE

    E-Print Network [OSTI]

    Thomborson, Clark

    WORKFLOW SIMULATION FOR INTERNATIONAL TRADE Qiang Dong Supervised by Professor Clark Thomborson's competitive world. International trade has received some academic attention as an application of Business Process Reengineering. A major issue in international trade is due to problems pertaining to mutual

  8. Simulated Interdiction: Proliferation Security Initiative

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    ………………………………... Technical Capabilities to Support PSI ………………………………… Foreign Policy and External Relations ………………………............... Republic of Bevostan ………………………………………………………….. Geography ……………………………………………………………... iii 1 3 4 5 6 7 8 8 8 8 8 9 9 10... Security, Science and Policy Institute (NSSPI) Texas A&M University May 6, 2009 Simulated Interdiction: The Proliferation Security Initiative (PSI) Acknowledgements The National Nuclear Security Administration (NNSA) of the U.S. Department...

  9. Introduction Simulation of Pathological conditions

    E-Print Network [OSTI]

    Willson, Stephen J.

    Reference Survey of the Modeling Brain Energy Metabolism and Function -- Report of the work by Larisa. V et State University MATH 690P, Dec. 1. 06 Wen Zhou Modeling Brain Energy #12;Outline Introduction Modeling Simulation of Pathological conditions Conclusion and Discussion Reference Introduction Modeling Energy

  10. Simulating Wax Crayons Dave Rudolf

    E-Print Network [OSTI]

    Mould, David

    Simulating Wax Crayons Dave Rudolf dave.rudolf@usask.ca David Mould mould@cs.usask.ca Eric Neufeld a physically-inspired model of wax crayons, which synthesizes drawings from collections of user- specified that evolves as it interacts with the paper. The amount of wax deposition is computed based on the crayon

  11. LUNAR SOIL SIMULATION TRAFFICABILITY PARAMETERS

    E-Print Network [OSTI]

    Rathbun, Julie A.

    LUNAR SOIL SIMULATION and TRAFFICABILITY PARAMETERS by W. David Carrier, III Lunar Geotechnical.0 RECOMMENDED LUNAR SOIL TRAFFICABILITY PARAMETERS Table 9.14 in the Lunar Sourcebook (Carrier et al. 1991, p. 529) lists the current recommended lunar soil trafficability parameters: bc = 0.017 N/cm2 bN = 35° K

  12. Tutorial: Parallel Simulation on Supercomputers

    SciTech Connect (OSTI)

    Perumalla, Kalyan S [ORNL

    2012-01-01T23:59:59.000Z

    This tutorial introduces typical hardware and software characteristics of extant and emerging supercomputing platforms, and presents issues and solutions in executing large-scale parallel discrete event simulation scenarios on such high performance computing systems. Covered topics include synchronization, model organization, example applications, and observed performance from illustrative large-scale runs.

  13. Xyce parallel electronic simulator design.

    SciTech Connect (OSTI)

    Thornquist, Heidi K.; Rankin, Eric Lamont; Mei, Ting; Schiek, Richard Louis; Keiter, Eric Richard; Russo, Thomas V.

    2010-09-01T23:59:59.000Z

    This document is the Xyce Circuit Simulator developer guide. Xyce has been designed from the 'ground up' to be a SPICE-compatible, distributed memory parallel circuit simulator. While it is in many respects a research code, Xyce is intended to be a production simulator. As such, having software quality engineering (SQE) procedures in place to insure a high level of code quality and robustness are essential. Version control, issue tracking customer support, C++ style guildlines and the Xyce release process are all described. The Xyce Parallel Electronic Simulator has been under development at Sandia since 1999. Historically, Xyce has mostly been funded by ASC, the original focus of Xyce development has primarily been related to circuits for nuclear weapons. However, this has not been the only focus and it is expected that the project will diversify. Like many ASC projects, Xyce is a group development effort, which involves a number of researchers, engineers, scientists, mathmaticians and computer scientists. In addition to diversity of background, it is to be expected on long term projects for there to be a certain amount of staff turnover, as people move on to different projects. As a result, it is very important that the project maintain high software quality standards. The point of this document is to formally document a number of the software quality practices followed by the Xyce team in one place. Also, it is hoped that this document will be a good source of information for new developers.

  14. Modeling and Simulation Academic Program

    E-Print Network [OSTI]

    in analysis Refined accident-incident forecast (location, frequency, and severity) Recurrent and incident#12;#12;#12;Modeling and Simulation Academic Program #12;M&S Workforce Development Associate Implementation, Operations Engineer Design, Analysis Scientist Research, Development Partners in Providing World

  15. 5, 79658026, 2005 Simulating aerosol

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    composition, number concentration, and size distribution of the global submicrometer aerosol. The present, coagulation, condensation, nucleation of sulfuric acid vapor, aerosol chemistry, cloud processing, and sizeACPD 5, 7965­8026, 2005 Simulating aerosol microphysics with ECHAM/MADE A. Lauer et al. Title Page

  16. 6, 75197562, 2006 Simulating aerosol

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , particle number concentration and aerosol size-distribution. The model takes into account sulfate (SO4. This model system enables explicit simulations of the particle number concentration and size-distribution of aerosol dynamical processes (nucleation, condensation, coagulation) is evaluated by comparison

  17. Numerical Simulation of Breaking Waves Using Level-Set Navier-Stokes Method

    E-Print Network [OSTI]

    Dong, Qian

    2010-07-14T23:59:59.000Z

    ) equations were employed for the prediction of nonlinear wave-interaction and wave-breaking phenomena over sloping beaches. In the level-set finite-analytic Navier-Stokes (FANS) method, the free surface is represented by the zero level-set function...

  18. Non Nuclear NTR Environmental Simulator

    SciTech Connect (OSTI)

    Emrich, William J. Jr. [NASA Marshall Space Flight Center, M.S. XD21, Huntsville, Alabama 35812 (United States)

    2006-01-20T23:59:59.000Z

    Nuclear Thermal Rockets or NTR's have been suggested as a propulsion system option for vehicles traveling to the moon or Mars. These engines are capable of providing high thrust at specific impulses at least twice that of today's best chemical engines. The performance constraints on these engines are mainly the result of temperature limitations on the fuel coupled with a limited ability to withstand chemical attack by the hot hydrogen propellant. To operate at maximum efficiency, fuel forms are desired which can withstand the extremely hot, hostile environment characteristic of NTR operation for at least several hours. The simulation of such an environment would require an experimental device which could simultaneously approximate the power, flow, and temperature conditions which a nuclear fuel element (or partial element) would encounter during NTR operation. Such a simulation would allow detailed studies of the fuel behavior and hydrogen flow characteristics under reactor like conditions to be performed. The goal of these simulations would be directed toward expanding the performance envelope of NTR engines over that which was demonstrated during the Rover and NERVA nuclear rocket programs of the 1970's. Current planning calls for such a simulator to be constructed at the Marshall Space Flight Center over the coming year, and it is anticipated that it will be used in the future to evaluate a wide variety of fuel element designs and the materials of which they are constructed. This present work addresses the initial experimental objectives of the NTR simulator with regard to reproducing the fuel degradation patterns previously observed during the NERVA testing.

  19. NUMERICAL SIMULATIONS OF CHROMOSPHERIC MICROFLARES

    SciTech Connect (OSTI)

    Jiang, R. L.; Fang, C.; Chen, P. F., E-mail: fangc@nju.edu.c [Department of Astronomy, Nanjing University, Nanjing 210093 (China)

    2010-02-20T23:59:59.000Z

    With gravity, ionization, and radiation being considered, we perform 2.5 dimensional (2.5D) compressible resistive magnetohydrodynamic (MHD) simulations of chromospheric magnetic reconnection using the CIP-MOCCT scheme. The temperature distribution of the quiet-Sun atmospheric model VALC and the helium abundance (10%) are adopted. Our 2.5D MHD simulation reproduces qualitatively the temperature enhancement observed in chromospheric microflares. The temperature enhancement DELTAT is demonstrated to be sensitive to the background magnetic field, whereas the total evolution time DELTAt is sensitive to the magnitude of the anomalous resistivity. Moreover, we found a scaling law, which is described as DELTAT/DELTAt {approx} n{sub H} {sup -1.5} B {sup 2.1}eta{sub 0} {sup 0.88}. Our results also indicate that the velocity of the upward jet is much greater than that of the downward jet, and the X-point may move up or down.

  20. Quantum simulations of physics problems

    SciTech Connect (OSTI)

    Somma, R. D. (Rolando D.); Ortiz, G. (Gerardo); Knill, E. H. (Emanuel H.); Gubernatis, J. E.

    2003-01-01T23:59:59.000Z

    If a large Quantum Computer (QC) existed today, what type of physical problems could we efficiently simulate on it that we could not efficiently simulate on a classical Turing machine? In this paper we argue that a QC could solve some relevant physical 'questions' more efficiently. The existence of one-to-one mappings between different algebras of observables or between different Hilbert spaces allow us to represent and imitate any physical system by any other one (e.g., a bosonic system by a spin-1/2 system). We explain how these mappings can be performed, and we show quantum networks useful for the efficient evaluation of some physical properties, such as correlation functions and energy spectra.

  1. Numerical simulations of quasar absorbers

    E-Print Network [OSTI]

    Tom Theuns

    2005-07-25T23:59:59.000Z

    The physical state of the intergalactic medium can be probed in great detail with the intervening absorption systems seen in quasar spectra. The properties of the Hydrogen absorbers depend on many cosmological parameters, such as the matter-power spectrum, reionisation history, ionising background and the nature of the dark matter. The spectra also contain metal lines, which can be used to constrain the star formation history and the feedback processes acting in large and small galaxies. Simulations have been instrumental in investigating to what extent these parameters can be unambiguously constrained with current and future data. This paper is meant as an introduction to this subject, and reviews techniques and methods for simulating the intergalactic medium.

  2. 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...

  3. Bayesian Statistics Stochastic Simulation -Gibbs sampling

    E-Print Network [OSTI]

    Wright, Francis

    Bayesian Statistics Stochastic Simulation - Gibbs sampling Bayesian Statistics - an Introduction Dr Pettit Bayesian Statistics - an Introduction #12;Bayesian Statistics Stochastic Simulation - Gibbs sampling What is Bayesian Statistics? Bayes Theorem The Likelihood Principle Mixtures of conjugate priors

  4. Fluid Catalytic Cracking Power Recovery Computer Simulation

    E-Print Network [OSTI]

    Samurin, N. A.

    1979-01-01T23:59:59.000Z

    operating conditions. The digital computer model simulates the performance of the axial compressor, power recovery expander, regenerator section, and system pressure drops. The program can simulate the process system design conditions for compatibility...

  5. Computer simulation of neutron capture therapy.

    E-Print Network [OSTI]

    Olson, Arne Peter

    1967-01-01T23:59:59.000Z

    Analytical methods are developed to simulate on a large digital computer the production and use of reactor neutron beams f or boron capture therapy of brain tumors. The simulation accounts for radiation dose distributions ...

  6. Computer simulation of neutron capture therapy

    E-Print Network [OSTI]

    Olson, Arne Peter

    1967-01-01T23:59:59.000Z

    Analytical methods are developed to simulate on a large digital computer the production and use of reactor neutron beams f or boron capture therapy of brain tumors. The simulation accounts for radiation dose distributions ...

  7. Bayes, Asymptotics, Simulation and the Bootstrap

    E-Print Network [OSTI]

    Fletcher, David

    Bayes, Asymptotics, Simulation and the Bootstrap David Fletcher Department of Mathematics Bootstrapping and Bayesian Methods #12;Bayesian Methods and Asymptotics Bayesian methods Conceptually simple for lognormal cases Insight: studentized bootstrap better than percentile Simulations useful for checking actual

  8. Design and Simulation of Lithium Rechargeable Batteries

    E-Print Network [OSTI]

    Doyle, C.M.

    2010-01-01T23:59:59.000Z

    Design and Simulation of Lithium Rechargeable Batteries by Christopher Marc Doyle Doctor of Philosophy in Chemical EngineeringDesign and Simulation of Lithium Rechargeable Batteries I C. Marc Doyle Department of Chemical Engineering

  9. More Issues of Building Energy Simulation 

    E-Print Network [OSTI]

    Kang, Z.; Zhao, J.

    2006-01-01T23:59:59.000Z

    The paper investigates the development of building energy simulation software. It is shown that such applications can be used for energy forecasting, system design and operations, and energy evaluation. Several energy simulation methods are analyzed...

  10. Drilling optimization using drilling simulator software

    E-Print Network [OSTI]

    Salas Safe, Jose Gregorio

    2004-09-30T23:59:59.000Z

    the results of using drilling simulator software called Drilling Optimization Simulator (DROPS®) in the evaluation of the Aloctono block, in the Pirital field, eastern Venezuela. This formation is characterized by very complex geology, containing faulted...

  11. Fluid Catalytic Cracking Power Recovery Computer Simulation 

    E-Print Network [OSTI]

    Samurin, N. A.

    1979-01-01T23:59:59.000Z

    operating conditions. The digital computer model simulates the performance of the axial compressor, power recovery expander, regenerator section, and system pressure drops. The program can simulate the process system design conditions for compatibility...

  12. Towards Grid-Wide Modeling and Simulation

    E-Print Network [OSTI]

    Xie, Yong

    Modeling and simulation permeate all areas of business, science and engineering. With the increase in the scale and complexity of simulations, large amounts of computational resources are required, and collaborative model ...

  13. Modeling and Simulation for Safeguards

    SciTech Connect (OSTI)

    Swinhoe, Martyn T. [Los Alamos National Laboratory

    2012-07-26T23:59:59.000Z

    The purpose of this talk is to give an overview of the role of modeling and simulation in Safeguards R&D and introduce you to (some of) the tools used. Some definitions are: (1) Modeling - the representation, often mathematical, of a process, concept, or operation of a system, often implemented by a computer program; (2) Simulation - the representation of the behavior or characteristics of one system through the use of another system, especially a computer program designed for the purpose; and (3) Safeguards - the timely detection of diversion of significant quantities of nuclear material. The role of modeling and simulation are: (1) Calculate amounts of material (plant modeling); (2) Calculate signatures of nuclear material etc. (source terms); and (3) Detector performance (radiation transport and detection). Plant modeling software (e.g. FACSIM) gives the flows and amount of material stored at all parts of the process. In safeguards this allow us to calculate the expected uncertainty of the mass and evaluate the expected MUF. We can determine the measurement accuracy required to achieve a certain performance.

  14. An interactive teaching device simulating intussusception reduction

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    1764-x TECHNICAL INNOVATION An interactive teaching deviceIRB. We developed an interactive teaching device to simulate

  15. Quantum walks and relativistic quantum simulations

    E-Print Network [OSTI]

    Blatt, Rainer

    in a quantum simulation of the Klein para- dox. The position and momentum of a relativistic Dirac particle

  16. Simulating a quantum magnet with trapped ions

    E-Print Network [OSTI]

    Loss, Daniel

    systems we need a quantum leap in computer simulations. We cannot translate quantum behaviour arising from dynamics, we need a `quantum leap' in simulation efficiency. As proposed in ref. 1, a universal quantumLETTERS Simulating a quantum magnet with trapped ions A. FRIEDENAUER*, H. SCHMITZ*, J. T. GLUECKERT

  17. Framework for Simulation Integration Radek Sindelar

    E-Print Network [OSTI]

    of simulation life cycle. The remainder of this work is structured as follows: in the next section on a simulation and integration problem. The section 4 introduces the concept and structure of environment for simulation integration. In the section 5 beside the current status the real project is described. The section

  18. Numerical simulations of the intergalactic medium

    E-Print Network [OSTI]

    Tom Theuns

    2002-09-05T23:59:59.000Z

    The intergalactic medium at redshifts 2--6 can be studied observationally through the absorption features it produces in the spectra of background quasars. Most of the UV-absorption lines arise in mildly overdense regions, which can be simulated reliably with current hydrodynamical simulations. Comparison of observed and simulated spectra allows one to put contraints on the model's parameters.

  19. SLUDGE BATCH 6/TANK 40 SIMULANT CHEMICAL PROCESS CELL SIMULATIONS

    SciTech Connect (OSTI)

    Koopman, David

    2010-04-28T23:59:59.000Z

    Phase III simulant flowsheet testing was completed using the latest composition estimates for SB6/Tank 40 feed to DWPF. The goals of the testing were to determine reasonable operating conditions and assumptions for the startup of SB6 processing in the DWPF. Testing covered the region from 102-159% of the current DWPF stoichiometric acid equation. Nitrite ion concentration was reduced to 90 mg/kg in the SRAT product of the lowest acid run. The 159% acid run reached 60% of the DWPF Sludge Receipt and Adjustment Tank (SRAT) limit of 0.65 lb H2/hr, and then sporadically exceeded the DWPF Slurry Mix Evaporator (SME) limit of 0.223 lb H2/hr. Hydrogen generation rates peaked at 112% of the SME limit, but higher than targeted wt% total solids levels may have been partially responsible for rates seen. A stoichiometric factor of 120% met both objectives. A processing window for SB6 exists from 102% to something close to 159% based on the simulant results. An initial recommendation for SB6 processing is at 115-120% of the current DWPF stoichiometric acid equation. The addition of simulated Actinide Removal Process (ARP) and Modular Caustic Side Solvent Extraction Unit (MCU) streams to the SRAT cycle had no apparent impact on the preferred stoichiometric factor. Hydrogen generation occurred continuously after acid addition in three of the four tests. The three runs at 120%, 118.4% with ARP/MCU, and 159% stoichiometry were all still producing around 0.1 lb hydrogen/hr at DWPF scale after 36 hours of boiling in the SRAT. The 120% acid run reached 23% of the SRAT limit and 37% of the SME limit. Conversely, nitrous oxide generation was subdued compared to previous sludge batches, staying below 29 lb/hr in all four tests or about a fourth as much as in comparable SB4 testing. Two processing issues, identified during SB6 Phase II flowsheet testing and qualification simulant testing, were monitored during Phase III. Mercury material balance closure was impacted by acid stoichiometry, and significant mercury was not accounted for in the highest acid run. Coalescence of elemental mercury droplets in the mercury water wash tank (MWWT) appeared to degrade with increasing stoichiometry. Observations were made of mercury scale formation in the SRAT condenser and MWWT. A tacky mercury amalgam with Rh, Pd, and Cu, plus some Ru and Ca formed on the impeller at 159% acid. It contained a significant fraction of the available Pd, Cu, and Rh as well as about 25% of the total mercury charged. Free (elemental) mercury was found in all of the SME products. Ammonia scrubbers were used during the tests to capture off-gas ammonia for material balance purposes. Significant ammonium ion formation was again observed during the SRAT cycle, and ammonia gas entered the off-gas as the pH rose during boiling. Ammonium ion production was lower than in the SB6 Phase II and the qualification simulant testing. Similar ammonium ion formation was seen in the ARP/MCU simulation as in the 120% flowsheet run. A slightly higher pH caused most of the ammonium to vaporize and collect in the ammonia scrubber reflux solution. Two periods of foaminess were noted. Neither required additional antifoam to control the foam growth. A steady foam layer formed during reflux in the 120% acid run. It was about an inch thick, but was 2-3 times more volume of bubbles than is typically seen during reflux. A similar foam layer also was seen during caustic boiling of the simulant during the ARP addition. While frequently seen with the radioactive sludge, foaminess during caustic boiling with simulants has been relatively rare. Two further flowsheet tests were performed and will be documented separately. One test was to evaluate the impact of process conditions that match current DWPF operation (lower rates). The second test was to evaluate the impact of SRAT/SME processing on the rheology of a modified Phase III simulant that had been made five times more viscous using ultrasonication.

  20. Molecular Dynamics Simulation of the AgCl/Electrolyte Interfacial...

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

    Simulation of the AgClElectrolyte Interfacial Capacity. Molecular Dynamics Simulation of the AgClElectrolyte Interfacial Capacity. Abstract: Molecular dynamics simulation of the...

  1. Simulating a Nationally Representative Housing Sample Using EnergyPlus

    E-Print Network [OSTI]

    Hopkins, Asa S.

    2011-01-01T23:59:59.000Z

    Simulating a Nationally Representative Housing Sample UsingSimulating a Nationally Representative Housing Sample Usingcalibrated, nationally representative set of simulated homes

  2. Learning style impact on knowledge gains in human patient simulation

    E-Print Network [OSTI]

    Shinnick, MA; Woo, MA

    2014-01-01T23:59:59.000Z

    the preference for simulation as a learning style. Singap.of high- ?delity simulation-based learning: a case reportdelity simulation: does it correlate with learning styles?

  3. Learning style impact on knowledge gains in human patient simulation

    E-Print Network [OSTI]

    Shinnick, MA; Woo, MA

    2015-01-01T23:59:59.000Z

    the preference for simulation as a learning style. Singap.of high- ?delity simulation-based learning: a case reportdelity simulation: does it correlate with learning styles?

  4. SIMMODEL: A DOMAIN DATA MODEL FOR WHOLE BUILDING ENERGY SIMULATION

    E-Print Network [OSTI]

    O'Donnell, James

    2013-01-01T23:59:59.000Z

    whole building energy simulation program. In: IBPSA BuildingExchange Protocols for Energy Simulation of HVAC&R EquipmentInteroperability for Energy Simulation. buildingSmart (2010)

  5. Strategies for coupling energy simulation and computational fluid dynamics programs

    E-Print Network [OSTI]

    Zhai, Zhiqiang; Chen, Qingyan; Klems, Joseph H.; Haves, Philip

    2001-01-01T23:59:59.000Z

    2000. “EnergyPlus: Energy Simulation Program” . ASHRAEA Coupled Airflow-and-Energy Simulation Program for IndoorSTRATEGIES FOR COUPLING ENERGY SIMULATION AND COMPUTATIONAL

  6. Acquisition of building geometry in the simulation of energy performance

    E-Print Network [OSTI]

    Bazjanac, Vladimir

    2001-01-01T23:59:59.000Z

    New-Generation Building Energy Simulation Program," Energy &Classes,” Building Energy Simulation User News, Vol.21,Clarke, J.A. 1985. Energy Simulation in Building Design,

  7. Software Architecture for Object-Oriented Simulation Modeling and Simulation Environments

    E-Print Network [OSTI]

    the realm of (i) model building & simulation execution in conjunction with (ii) software architectureSoftware Architecture for Object-Oriented Simulation Modeling and Simulation Environments: Case been a steady migration towards object-oriented modeling and simulation environments. There exist many

  8. A Smart Home Simulation Tool The Development of a Simulation Tool for Measuring

    E-Print Network [OSTI]

    A Smart Home Simulation Tool The Development of a Simulation Tool for Measuring the Impact of a Smart Grid on a Private Home Michael Nysteen & Henrik Mynderup Kongens Lyngby 2012 IMM-M.Sc.-2012-117 #12;A Smart Home Simulation Tool The Development of a Simulation Tool for Measuring the Impact

  9. Accelerated dynamics simulations of nanotubes.

    SciTech Connect (OSTI)

    Uberuaga, B. P. (Blas Pedro); Stuart, S. J. (Steve J.); Voter, A. F.

    2002-01-01T23:59:59.000Z

    We report on the application of accelerated dynamics techniques to the study of carbon nanotubes. We have used the parallel replica method and temperature accelerated dynamics simulations are currently in progress. In the parallel replica study, we have stretched tubes at a rate significantly lower than that used in previous studies. In these preliminary results, we find that there are qualitative differences in the rupture of the nanotubes at different temperatures. We plan on extending this investigation to include nanotubes of various chiralities. We also plan on exploring unique geometries of nanotubes.

  10. Ultracapacitor Technologies and Application in Hybrid and Electric Vehicles

    E-Print Network [OSTI]

    Burke, Andy

    2009-01-01T23:59:59.000Z

    Moderate Hybrid-electric Vehicles. ESScap06, Switzerland,GH. SIMPLEV: A Simple Electric Vehicle Simulation Program-20 th International Electric Vehicle Symposium, Long Beach,

  11. Simulated nuclear reactor fuel assembly

    DOE Patents [OSTI]

    Berta, Victor T. (Idaho Falls, ID)

    1993-01-01T23:59:59.000Z

    An apparatus for electrically simulating a nuclear reactor fuel assembly. It includes a heater assembly having a top end and a bottom end and a plurality of concentric heater tubes having electrical circuitry connected to a power source, and radially spaced from each other. An outer target tube and an inner target tube is concentric with the heater tubes and with each other, and the outer target tube surrounds and is radially spaced from the heater tubes. The inner target tube is surrounded by and radially spaced from the heater tubes and outer target tube. The top of the assembly is generally open to allow for the electrical power connection to the heater tubes, and the bottom of the assembly includes means for completing the electrical circuitry in the heater tubes to provide electrical resistance heating to simulate the power profile in a nuclear reactor. The embedded conductor elements in each heater tube is split into two halves for a substantial portion of its length and provided with electrical isolation such that each half of the conductor is joined at one end and is not joined at the other end.

  12. Simulated nuclear reactor fuel assembly

    DOE Patents [OSTI]

    Berta, V.T.

    1993-04-06T23:59:59.000Z

    An apparatus for electrically simulating a nuclear reactor fuel assembly. It includes a heater assembly having a top end and a bottom end and a plurality of concentric heater tubes having electrical circuitry connected to a power source, and radially spaced from each other. An outer target tube and an inner target tube is concentric with the heater tubes and with each other, and the outer target tube surrounds and is radially spaced from the heater tubes. The inner target tube is surrounded by and radially spaced from the heater tubes and outer target tube. The top of the assembly is generally open to allow for the electrical power connection to the heater tubes, and the bottom of the assembly includes means for completing the electrical circuitry in the heater tubes to provide electrical resistance heating to simulate the power profile in a nuclear reactor. The embedded conductor elements in each heater tube is split into two halves for a substantial portion of its length and provided with electrical isolation such that each half of the conductor is joined at one end and is not joined at the other end.

  13. Low Energy Quantum System Simulation

    E-Print Network [OSTI]

    Peter Cho; Karl Berggren

    2003-10-26T23:59:59.000Z

    A numerical method for solving Schrodinger's equation based upon a Baker-Campbell-Hausdorff (BCH) expansion of the time evolution operator is presented herein. The technique manifestly preserves wavefunction norm, and it can be applied to problems in any number of spatial dimensions. We also identify a particular dimensionless ratio of potential to kinetic energies as a key coupling constant. This coupling establishes characteristic length and time scales for a large class of low energy quantum states, and it guides the choice of step sizes in numerical work. Using the BCH method in conjunction with an imaginary time rotation, we compute low energy eigenstates for several quantum systems coupled to non-trivial background potentials. The approach is subsequently applied to the study of 1D propagating wave packets and 2D bound state time development. Failures of classical expectations uncovered by simulations of these simple systems help develop quantum intuition. Finally, we investigate the response of a Superconducting Quantum Interference Device (SQUID) to a time dependent potential. We discuss how to engineer the potential's energy and time scales so that the SQUID acts as a quantum NOT gate. The notional simulation we present for this gate provides useful insight into the design of one candidate building block for a quantum computer.

  14. Multiphysics simulations: challenges and opportunities.

    SciTech Connect (OSTI)

    Keyes, D.; McInnes, L. C.; Woodward, C.; Gropp, W.; Myra, E.; Pernice, M. (Mathematics and Computer Science); (KAUST and Columbia Univ.); (Lawrence Livermore National Laboratory); (Univ. of Illinois at Urbana-Champaign); (Univ. of Mich.); (Idaho National Lab.)

    2012-11-29T23:59:59.000Z

    This report is an outcome of the workshop Multiphysics Simulations: Challenges and Opportunities, sponsored by the Institute of Computing in Science (ICiS). Additional information about the workshop, including relevant reading and presentations on multiphysics issues in applications, algorithms, and software, is available via https://sites.google.com/site/icismultiphysics2011/. We consider multiphysics applications from algorithmic and architectural perspectives, where 'algorithmic' includes both mathematical analysis and computational complexity and 'architectural' includes both software and hardware environments. Many diverse multiphysics applications can be reduced, en route to their computational simulation, to a common algebraic coupling paradigm. Mathematical analysis of multiphysics coupling in this form is not always practical for realistic applications, but model problems representative of applications discussed herein can provide insight. A variety of software frameworks for multiphysics applications have been constructed and refined within disciplinary communities and executed on leading-edge computer systems. We examine several of these, expose some commonalities among them, and attempt to extrapolate best practices to future systems. From our study, we summarize challenges and forecast opportunities. We also initiate a modest suite of test problems encompassing features present in many applications.

  15. Stochastic Roadmap Simulation: Efficient Representation and Algorithms for

    E-Print Network [OSTI]

    Brutlag, Doug

    Stochastic Roadmap Simulation: Efficient Representation and Algorithms for the Analysis Roadmap Simulation (SRS) #12;Stochastic Roadmap Simulation (SRS) Multiple paths at once; #12;Stochastic Roadmap Simulation (SRS) Multiple paths at once; No local minimum problem; #12;Stochastic Roadmap

  16. The Durham ELT adaptive optics simulation platform

    E-Print Network [OSTI]

    Alastair Basden; Timothy Butterley; Richard Myers; Richard Wilson

    2006-11-09T23:59:59.000Z

    Adaptive optics systems are essential on all large telescopes where image quality is important. These are complex systems with many design parameters requiring optimisation before good performance can be achieved. The simulation of adaptive optics systems is therefore necessary to categorise the expected performance. This paper describes an adaptive optics simulation platform, developed at Durham University, which can be used to simulate adaptive optics systems on the largest proposed future extremely large telescopes (ELTs) as well as current systems. This platform is modular, object oriented and has the benefit of hardware application acceleration which can be used to improve the simulation performance, essential for ensuring that the run time of a given simulation is acceptable. The simulation platform described here can be highly parallelised using parallelisation techniques suited for adaptive optics simulation, whilst still offering the user complete control while the simulation is running. Results from the simulation of a ground layer adaptive optics system are provided as an example to demonstrate the flexibility of this simulation platform.

  17. atomistic simulation study: Topics by E-print Network

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

    14 Simulational nanoengineering: Molecular dynamics implementation of an atomistic Stirling engine Physics Websites Summary: Simulational nanoengineering: Molecular dynamics...

  18. atomistic simulation studies: Topics by E-print Network

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

    14 Simulational nanoengineering: Molecular dynamics implementation of an atomistic Stirling engine Physics Websites Summary: Simulational nanoengineering: Molecular dynamics...

  19. Theory, experiment and computer simulation of the electrostatic...

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

    Theory, experiment and computer simulation of the electrostatic potential at crystalelectrolyte interfaces . Theory, experiment and computer simulation of the electrostatic...

  20. International symposium on fuel rod simulators: development and application

    SciTech Connect (OSTI)

    McCulloch, R.W. (comp.)

    1981-05-01T23:59:59.000Z

    Separate abstracts are included for each of the papers presented concerning fuel rod simulator operation and performance; simulator design and evaluation; clad heated fuel rod simulators and fuel rod simulators for cladding investigations; fuel rod simulator components and inspection; and simulator analytical modeling. Ten papers have previously been input to the Energy Data Base.

  1. Simulating Billion-Task Parallel Programs

    SciTech Connect (OSTI)

    Perumalla, Kalyan S [ORNL] [ORNL; Park, Alfred J [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    In simulating large parallel systems, bottom-up approaches exercise detailed hardware models with effects from simplified software models or traces, whereas top-down approaches evaluate the timing and functionality of detailed software models over coarse hardware models. Here, we focus on the top-down approach and significantly advance the scale of the simulated parallel programs. Via the direct execution technique combined with parallel discrete event simulation, we stretch the limits of the top-down approach by simulating message passing interface (MPI) programs with millions of tasks. Using a timing-validated benchmark application, a proof-of-concept scaling level is achieved to over 0.22 billion virtual MPI processes on 216,000 cores of a Cray XT5 supercomputer, representing one of the largest direct execution simulations to date, combined with a multiplexing ratio of 1024 simulated tasks per real task.

  2. Model Validation with Hybrid Dynamic Simulation

    SciTech Connect (OSTI)

    Huang, Zhenyu; Kosterev, Dmitry; Guttromson, Ross T.; Nguyen, Tony B.

    2006-06-18T23:59:59.000Z

    Abstract—Model validation has been one of the central topics in power engineering studies for years. As model validation aims at obtaining reasonable models to represent actual behavior of power system components, it has been essential to validate models against actual measurements or known benchmark behavior. System-wide model simulation results can be compared with actual recordings. However, it is difficult to construct a simulation case for a large power system such as the WECC system and to narrow down to problematic models in a large system. Hybrid dynamic simulation with its capability of injecting external signals into dynamic simulation enables rigorous comparison of measurements and simulation in a small subsystem of interest. This paper presents such a model validation methodology with hybrid dynamic simulation. Two application examples on generator and load model validation are presented to show the validity of this model validation methodology. This methodology is further extended for automatic model validation and dichotomous subsystem model validation.

  3. Emulation to simulate low resolution atmospheric data

    SciTech Connect (OSTI)

    Hebbur Venkata Subba Rao, Vishwas [ORNL; Archibald, Richard K [ORNL; Evans, Katherine J [ORNL

    2012-08-01T23:59:59.000Z

    Climate simulations require significant compute power, they are complex and therefore it is time consuming to simulate them. We have developed an emulator to simulate unknown climate datasets. The emulator uses stochastic collocation and multi-dimensional in- terpolation to simulate the datasets. We have used the emulator to determine various physical quantities such as temperature, short and long wave cloud forcing, zonal winds etc. The emulation gives results which are very close to those obtained by simulations. The emulator was tested on 2 degree atmospheric datasets. The work evaluates the pros and cons of evaluating the mean first and inter- polating and vice versa. To determine the physical quantities, we have assumed them to be a function of time, longitude, latitude and a random parameter. We have looked at parameters that govern high stable clouds, low stable clouds, timescale for convection etc. The emulator is especially useful as it requires negligible compute times when compared to the simulation itself.

  4. Intelligent interface for design and simulation

    SciTech Connect (OSTI)

    Draisin, W.; Peter, E.

    1986-01-01T23:59:59.000Z

    We are developing a system composed of intelligent interfaces, expert systems, and databases that uses artificial intelligence techniques to simplify the use of large simulation codes and to help design complicated physical devices. The simulation codes are used in analyzing and designing weapons, and the devices are themselves parts of weapon systems. From a designer's point of view, the simulation process is the same no matter what is being simulated. In the course of developing two intelligent interfaces for the design of nuclear weapons, we have found that data-driven programming is a useful technique for implementing an open-ended user interface to assist the designer. We discuss the simulation process as it is done now and as it could be done with intelligent interfaces. We then discuss the use of data-driven programming in a database environment to support an interface for an arbitrary number of simulation codes. 3 figs.

  5. Benchmarking ICRF simulations for ITER

    SciTech Connect (OSTI)

    R. V. Budny, L. Berry, R. Bilato, P. Bonoli, M. Brambilla, R.J. Dumont, A. Fukuyama, R. Harvey, E.F. Jaeger, E. Lerche, C.K. Phillips, V. Vdovin, J. Wright, and members of the ITPA-IOS

    2010-09-28T23:59:59.000Z

    Abstract Benchmarking of full-wave solvers for ICRF simulations is performed using plasma profiles and equilibria obtained from integrated self-consistent modeling predictions of four ITER plasmas. One is for a high performance baseline (5.3 T, 15 MA) DT H-mode plasma. The others are for half-field, half-current plasmas of interest for the pre-activation phase with bulk plasma ion species being either hydrogen or He4. The predicted profiles are used by seven groups to predict the ICRF electromagnetic fields and heating profiles. Approximate agreement is achieved for the predicted heating power partitions for the DT and He4 cases. Profiles of the heating powers and electromagnetic fields are compared.

  6. Assessment of Molecular Modeling & Simulation

    SciTech Connect (OSTI)

    None

    2002-01-03T23:59:59.000Z

    This report reviews the development and applications of molecular and materials modeling in Europe and Japan in comparison to those in the United States. Topics covered include computational quantum chemistry, molecular simulations by molecular dynamics and Monte Carlo methods, mesoscale modeling of material domains, molecular-structure/macroscale property correlations like QSARs and QSPRs, and related information technologies like informatics and special-purpose molecular-modeling computers. The panel's findings include the following: The United States leads this field in many scientific areas. However, Canada has particular strengths in DFT methods and homogeneous catalysis; Europe in heterogeneous catalysis, mesoscale, and materials modeling; and Japan in materials modeling and special-purpose computing. Major government-industry initiatives are underway in Europe and Japan, notably in multi-scale materials modeling and in development of chemistry-capable ab-initio molecular dynamics codes.

  7. Simulation Enabled Safeguards Assessment Methodology

    SciTech Connect (OSTI)

    Robert Bean; Trond Bjornard; Thomas Larson

    2007-09-01T23:59:59.000Z

    It is expected that nuclear energy will be a significant component of future supplies. New facilities, operating under a strengthened international nonproliferation regime will be needed. There is good reason to believe virtual engineering applied to the facility design, as well as to the safeguards system design will reduce total project cost and improve efficiency in the design cycle. Simulation Enabled Safeguards Assessment MEthodology (SESAME) has been developed as a software package to provide this capability for nuclear reprocessing facilities. The software architecture is specifically designed for distributed computing, collaborative design efforts, and modular construction to allow step improvements in functionality. Drag and drop wireframe construction allows the user to select the desired components from a component warehouse, render the system for 3D visualization, and, linked to a set of physics libraries and/or computational codes, conduct process evaluations of the system they have designed.

  8. Simulation of leveling in electrodeposition

    SciTech Connect (OSTI)

    Dukovic, J.O.; Tobias, C.W. (Materials and Chemical Sciences Div., Lawrence Berkeley Lab. and Dept. of Chemical Engineering, Univ. of California, Berkeley, CA (US))

    1990-12-01T23:59:59.000Z

    This paper reports on a model of current distribution and electrode shape change for electrodeposition in the presence of diffusion-controlled leveling agents that have been developed. The system is treated as a special case of secondary current distribution, with the surface overpotential taken to depend on both the current density and the transport-limited flux of the leveling agent, according to an empirical relation adapted from polarization data measured at different conditions of agitation. The spatial variation of the leveling-agent flux is determined from a concentration field problem based on the assumption of a stagnant diffusion layer. The solution is obtained by the boundary element method, with a flexible moving-boundary algorithm for simulating the advancement of the electrode profile. To illustrate the model's performance, the evolution of a groove profile during deposition of nickel from a Watts-type bath containing coumarin is predicted and compared with measurements reported in the literature.

  9. Explosive simulants for testing explosive detection systems

    DOE Patents [OSTI]

    Kury, John W. (Danville, CA); Anderson, Brian L. (Lodi, CA)

    1999-09-28T23:59:59.000Z

    Explosives simulants that include non-explosive components are disclosed that facilitate testing of equipment designed to remotely detect explosives. The simulants are non-explosive, non-hazardous materials that can be safely handled without any significant precautions. The simulants imitate real explosives in terms of mass density, effective atomic number, x-ray transmission properties, and physical form, including moldable plastics and emulsions/gels.

  10. Uncalibrated Building Energy Simulation Modeling Results 

    E-Print Network [OSTI]

    Ahmad, M.; Culp, C.H.

    2006-01-01T23:59:59.000Z

    VOLUME 12, NUMBER 4 HVAC&R RESEARCH OCTOBER 2006 1141 Uncalibrated Building Energy Simulation Modeling Results Mushtaq Ahmad Charles H. Culp, PhD, PE Associate Member ASHRAE Fellow ASHRAE Received June 23, 2005; accepted April 17, 2006... the uncalibrated simulations were completed. The dis- crepancies between the simulated and measured total yearly building energy use varied over ±30% with one outlier. The results show that discrepancies ranged over ±90% between the sim- ulations and the measured...

  11. GEOMECHANICS IN RESERVOIR SIMULATION: OVERVIEW OF ...

    E-Print Network [OSTI]

    P. LONGUEMARE

    2002-11-12T23:59:59.000Z

    dans le réservoir et de faciliter le calage des historiques de production. Abstract — Geomechanics in Reservoir Simulation: Overview of Coupling Methods and ...

  12. Multidimensional simulation and chemical kinetics development...

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

    Developing chemical kinetic mechanisms and applying them to simulating engine combustion processes. deer09aceves.pdf More Documents & Publications Chemical Kinetic Research on...

  13. First trillion particle cosmological simulation completed

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

    trillion particle cosmological simulation completed A team of astrophysicists and computer scientists has created high-resolution cyber images of our cosmos. December 3, 2014...

  14. Simulation and Risk Assessment Archived Projects

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

    Mellon University 412008 Simulation and Risk Assessment for Phase III Pilots Regional Carbon Sequestration Partnerships 1012008 Injection and Reservoir Hazard Management:...

  15. Molecular dynamics simulation studies of electrolytes andelectrolyte...

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

    Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. es40smith.pdf More Documents & Publications Molecular Dynamics Simulation Studies of...

  16. Improved Solvers for Advanced Engine Combustion Simulation

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

    Volvo; multi-zone cycle simulation, OpenFOAM model development Bosch; High Performance Computing of HCCISI transition Delphi; direct injection GE Research; new...

  17. Sandia National Laboratories: Offshore Wind Energy Simulation...

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

    Offshore Wind Energy Simulation Toolkit Sandia Vertical-Axis Wind-Turbine Research Presented at Science of Making Torque from Wind Conference On July 8, 2014, in Computational...

  18. Molecular dynamics simulation of threshold displacement energies...

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

    experimental estimates in ceramics. Citation: Moreira PA, R Devanathan, J Yu, and WJ Weber.2009."Molecular dynamics simulation of threshold displacement energies in...

  19. Materials Theory, Modeling and Simulation | ORNL

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

    Materials Characterization Materials Theory and Simulation Quantum Monte Carlo Density Functional Theory Monte Carlo Ab Initio Molecular Dynamics Chemical and Materials Theory...

  20. Simulating Complex Window Systems using BSDF Data

    E-Print Network [OSTI]

    Konstantoglou, Maria

    2011-01-01T23:59:59.000Z

    BSDF simulated values, due to differences in sky luminancesky distribution, modelled interior and exterior conditions, and slight differences in location of view. Still, the luminance

  1. Development and Demonstration of Ultrafiltration Simulants

    SciTech Connect (OSTI)

    Russell, Renee L.; Billing, Justin M.; Peterson, Reid A.; Rinehart, Donald E.; Smith, Harry D.

    2009-02-24T23:59:59.000Z

    According to Bechtel National, Inc. (BNI) Test Specification 24590-PTF-TSP-RT-06-006, Rev 0, Simulant Development to Support the Development and Demonstration of Leaching and Ultrafiltration Pretreatment Processes,” simulants for boehmite, gibbsite, and filtration are to be developed that can be used in subsequent bench and integrated testing of the leaching/filtration processes for the waste treatment plant (WTP). These simulants will then be used to demonstrate the leaching process and to help refine processing conditions which may impact safety basis considerations (Smith 2006). This report documents the results of the filtration simulant development.

  2. Sandia National Laboratories: Consortium for Advanced Simulation...

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

    the modeling simulation tools built during its first phase to include additional nuclear reactor designs, including small, modular reactors. "As President Obama made clear...

  3. Development and Characterization of Boehmite Component Simulant

    SciTech Connect (OSTI)

    Russell, Renee L.; Peterson, Reid A.; Smith, Harry D.; Rinehart, Donald E.; Aker, Pamela M.; Buck, Edgar C.

    2009-03-10T23:59:59.000Z

    According to Bechtel National Inc.’s (BNI’s) Test Specification 24590-PTF-TSP-RT-06-006, Rev 0, “Simulant Development to Support the Development and Demonstration of Leaching and Ultrafiltration Pretreatment Processes,” simulants for boehmite, gibbsite, and filtration are to be developed that can be used in subsequent bench and integrated testing of the leaching/filtration processes. These simulants will then be used to demonstrate the leaching process and to help refine processing conditions that may impact safety basis considerations (Smith 2006). This report documents the results of the boehmite simulant development.

  4. MOOSE simulating nuclear reactor CRUD buildup

    ScienceCinema (OSTI)

    None

    2014-07-21T23:59:59.000Z

    This simulation uses multiple physical models to show how the buildup of boron deposits on reactor fuel can affect performance and the reactor's power profile.

  5. MOOSE simulating nuclear reactor CRUD buildup

    SciTech Connect (OSTI)

    None

    2014-02-06T23:59:59.000Z

    This simulation uses multiple physical models to show how the buildup of boron deposits on reactor fuel can affect performance and the reactor's power profile.

  6. Sandia National Laboratories: Molecular Simulations Guide Nanowire...

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

    Innovation Summit Experimental Smart Outlet Brings Flexibility, Resiliency to Grid Architecture Molecular Simulations Guide Nanowire Research On March 7, 2012, in Capabilities,...

  7. Simulated watershed responses to land cover changes using the Regional Hydro-Ecological Simulation System

    E-Print Network [OSTI]

    Tarboton, David

    Simulated watershed responses to land cover changes using the Regional Hydro-Ecological Simulation Old Main Hill, Logan, UT, 84322-8200, USA Abstract: In this work, we used the Regional Hydro

  8. MIT Device Simulation WebLab : an online simulator for microelectronic devices

    E-Print Network [OSTI]

    Solis, Adrian (Adrian Orbita)

    2005-01-01T23:59:59.000Z

    In the field of microelectronics, a device simulator is an important engineering tool with tremendous educational value. With a device simulator, a student can examine the characteristics of a microelectronic device described ...

  9. Computational fluid dynamics (CFD) simulations of aerosol in a u-shaped steam generator tube

    E-Print Network [OSTI]

    Longmire, Pamela

    2009-05-15T23:59:59.000Z

    Department) for all the support I received while researching and writing this dissertation and to the U.S. Nuclear Regulatory Commission, Office of Nuclear Regulatory Research, Division of Systems Analysis and Regulatory Effectiveness, Safety Margins... in PWRs. Table 1 list NPPs where SGTR events have occurred, the date, leakage rate of radioactive material and the cause of the SGTR. NUREG/CR-6365 reports the first SGTR event occurred in 1975 at Point Beach Unit 1, while the most recent event...

  10. Intelligent Simulation Tools for Mining Large Scienti c Data Sets 1 Intelligent Simulation Tools for Mining

    E-Print Network [OSTI]

    Bailey-Kellogg, Chris

    Intelligent Simulation Tools for Mining Large Scienti#12;c Data Sets 1 Intelligent Simulation Tools for Mining Large Scienti#12;c Data Sets Feng ZHAO Xerox Palo Alto Research Center 3333 Coyote Hill Road, Palo. Keywords Intelligent simulation, Scienti#12;c data mining, Qualitative reasoning, Reasoning about physical

  11. The verification of a semi-analytical reservoir simulator using a finite difference reservoir simulator 

    E-Print Network [OSTI]

    Dube, Hans Gerhardt

    1990-01-01T23:59:59.000Z

    of Cases Fundamental Difference Between the Reservoir Simulators. Data Sets. . General Process of Verification. . . . . . . . . . . . . . . 22 24 25 25 26 29 32 36 SINGLE LAYER, RADIAL FLOW DRAWDOWN CASES. . 38 viii Page Infinite Cylindrical... Drawdown Problems. . . . . . . . . . . . . 38 41 43 45 49 50 52 MULTIPLE LAYER RESERVOIR, RADIAL FLOW DRAWDOWN CASES. 63 Simulation of Multiple Layer Reservoirs. . . . . . Simulation Parameters. Constant Rate Drawdown Tests in an Infinite...

  12. Numerical Simulation for eHealth: Grid-enabled Medical Simulation Services Siegfried Benknera

    E-Print Network [OSTI]

    Middleton, Stuart E.

    advanced bio-medical simulation applications. Often, however, such applications have a very limited methodology advances. The European GEMSS Project [7] is concerned with the creation of medical Grid service1 Numerical Simulation for eHealth: Grid-enabled Medical Simulation Services Siegfried Benknera

  13. Simulations de Parent / Kinship Simulations Colloque final du projet SimPa

    E-Print Network [OSTI]

    White, Douglas R.

    Simulations de Parenté / Kinship Simulations Colloque final du projet SimPa Final workshop Remarks, Francois Heran (INED) 10h30 From Tip to SimPa. Why Bother with Simulation?, Michael Houseman (University of Ljubjana) 13h00 Lunch 14h30 Machine Learning Applied to Alliance Networks, Telmo Menezes (CAMS

  14. Primitive chain Brownian simulations of entangled rubbers Short title: Simulations of entangled rubbers

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Primitive chain Brownian simulations of entangled rubbers Short title: Simulations of entangled rubbers J. Oberdisse1,2 , G. Ianniruberto2 , F. Greco3 , G. Marrucci2 1 Laboratoire Léon Brillouin CEA and entanglements used in several molecular theories of rubber elasticity is confirmed by the simulation results

  15. BLIND SPOTS OF QUALITATIVE SIMULATORS Nuri Tasdemir

    E-Print Network [OSTI]

    BLIND SPOTS OF QUALITATIVE SIMULATORS by Nuri Ta¸sdemir BS, in Electrical and Electronics in Computer Engineering Bogazi¸ci University 2007 #12;ii BLIND SPOTS OF QUALITATIVE SIMULATORS APPROVED BY: Prof. A.C. Cem Say . . . . . . . . . . . . . . . . . . . (Thesis Supervisor) Prof. H. Levent Akin

  16. A general-purpose, geochemical reservoir simulator

    SciTech Connect (OSTI)

    Liu, X.; Ortoleva, P.

    1996-12-31T23:59:59.000Z

    A geochemical simulator for the analysis of coupled reaction and transport processes is presented. The simulator is based on the numerical solution of the equations of coupled multi-phase fluid flow, species transport, energy balance and rock/fluid reactions. It also accounts for the effects of grain growth/dissolution and the alteration of porosity and permeability due to mineral reactions. The simulator can be used to analyze core floods, single-well scenarios and multiple production/injection well systems on the reservoir scale. Additionally, the simulator provides two flow options: the Darcy law for fluid flow in porous media and the Brinkman law that subsumes both free and porous medium flows. The simulator was tested using core acidizing data and results were in good agreement with laboratory observations. The simulator was applied to analyze matrix acidizing treatments for a horizontal well. The evolution of the skin factor was predicted and the optimal volume of acid required to remove the near-wellbore damage was determined. Reactive fluid infiltration was shown to lead to reaction-front fingering under certain conditions. Viscosity contrast in multiphase flow could also result in viscous fingering. Examples in this study also address these nonlinear fingering phenomena. A waterflood on the reservoir scale was analyzed and simulation results show that scale formation during waterfloods can occur far beyond injection wells. Two cases of waste disposal by deep well injection were evaluated and our simulation results were consistent with field measured data.

  17. Computer Simulations Reveal Multiple Functions for Aromatic

    E-Print Network [OSTI]

    Computer Simulations Reveal Multiple Functions for Aromatic Residues in Cellulase Enzymes NREL researchers use high-performance computing to demonstrate fundamental roles of aromatic residues in cellulase enzyme tunnels. National Renewable Energy Laboratory (NREL) computer simulations of a key indus- trial

  18. THE BLIND SIMULATION PROBLEM and REGENERATIVE PROCESSES

    E-Print Network [OSTI]

    Bucklew, James Antonio

    Processes 1 #12; 1 Introduction 1.1 Simulation and importance sampling Large and/or nonlinear stochastic on the order of 10 \\Gamma6 are quite common in stochastic systems. It is clear that a direct simulation(Z i ): The ratio p(\\Delta)=q(\\Delta) will be called the weight function of the importance sam

  19. Dynamic simulations of arrays of Josephson junctions

    SciTech Connect (OSTI)

    Eikmans, H.; van Himbergen, J.E. (Institute for Theoretical Physics, University of Utrecht, P.O. Box 80.006, 3508 TA Utrecht, The Netherlands (NL))

    1990-05-01T23:59:59.000Z

    First we introduce a very efficient algorithm for dynamic simulations of a wide class of arrays of Josephson junctions with realistic boundaries. With this algorithm one can also represent current-biased arrays with periodic boundaries. Next we present results of extensive simulations of ladder arrays. We evaluate the resistance as a function of magnetic field and find striking differences between different geometries.

  20. Numerical Simulation of Cooling Gas Injection Using

    E-Print Network [OSTI]

    Numerical Simulation of Cooling Gas Injection Using Adaptive Multiscale Techniques Wolfgang Dahmen: finite volume method, film cooling, cooling gas injection, multiscale techniques, grid adaptation AMS@igpm.rwth-aachen.de (Thomas Gotzen) #12;Numerical simulation of cooling gas injection using adaptive multiscale techniques

  1. Milestone M4900: Simulant Mixing Analytical Results

    SciTech Connect (OSTI)

    Kaplan, D.I.

    2001-07-26T23:59:59.000Z

    This report addresses Milestone M4900, ''Simulant Mixing Sample Analysis Results,'' and contains the data generated during the ''Mixing of Process Heels, Process Solutions, and Recycle Streams: Small-Scale Simulant'' task. The Task Technical and Quality Assurance Plan for this task is BNF-003-98-0079A. A report with a narrative description and discussion of the data will be issued separately.

  2. Incorporating Interprofessional Simulations in Dietetics Education

    E-Print Network [OSTI]

    George, Katie Elizabeth

    2014-08-31T23:59:59.000Z

    was not statistically significant. No difference was seen between students with regard to clinical experience. 87.5% of students felt the simulation helped them learn roles of other healthcare professionals, while 93.8% of students felt the simulation enhanced...

  3. Reweighting QCD simulations with dynamical overlap fermions

    E-Print Network [OSTI]

    Thomas DeGrand

    2008-10-03T23:59:59.000Z

    I apply a recently developed algorithm for reweighting simulations of lattice QCD from one quark mass to another to simulations performed with overlap fermions in the epsilon regime. I test it by computing the condensate from distributions of the low lying eigenvalues of the Dirac operator. Results seem favorable.

  4. Simulation of thermoacoustics with discontinuous Galerkin method

    E-Print Network [OSTI]

    Simulation of thermoacoustics with discontinuous Galerkin method Micha¨el Gineste Kongens Lyngby 2006 #12;#12;Summary This project concerns the simulation of thermoacoustical system. The aim of a numerical framework, which can be used as a tool for preliminary analysis of thermoacoustic systems. As such

  5. Short-Duration Simulations from Measurements.

    SciTech Connect (OSTI)

    Mitchell, Dean J.; Enghauser, Michael

    2014-08-01T23:59:59.000Z

    A method is presented that ascribes proper statistical variability to simulations that are derived from longer-duration measurements. This method is applicable to simulations of either real-value or integer-value data. An example is presented that demonstrates the applicability of this technique to the synthesis of gamma-ray spectra.

  6. Event simulation for colliders - A basic overview

    E-Print Network [OSTI]

    Christian Reuschle

    2014-11-26T23:59:59.000Z

    In this article we will discuss the basic calculational concepts to simulate particle physics events at high energy colliders. We will mainly focus on the physics in hadron colliders and particularly on the simulation of the perturbative parts, where we will in turn focus on the next-to-leading order QCD corrections.

  7. Observations and simulations improve space weather models

    E-Print Network [OSTI]

    - 1 - Observations and simulations improve space weather models June 25, 2014 Los Alamos with fast-moving particles and a space weather system that varies in response to incoming energy computer simulations of the space weather that can affect vital technology, communication and navigation

  8. Visualization of Fuel Cell Simulations Niklas Rober

    E-Print Network [OSTI]

    Zhang, Richard "Hao"

    Visualization of Fuel Cell Simulations Niklas R¨ober Otto-von-Guericke-Universit¨at, Magdeburg is used for this is a numerical simulation of a fuel cell. This data set is multiparametric and consist for the display of such data sets are discussed and evaluated on the fuel cell example. v #12;vi vi #12

  9. Atomistic Protein Folding Simulations on the

    E-Print Network [OSTI]

    Snow, Christopher

    Atomistic Protein Folding Simulations on the Submillisecond Time Scale Using Worldwide Distributed Abstract: Atomistic simulations of protein folding have the potential to be a great complement. Biopolymers 68: 91­109, 2003 Keywords: atomistic protein folding; microsecond time scale; computer hardware

  10. JPL S neii space simulator starts its

    E-Print Network [OSTI]

    Greer, Julia R.

    as much as anyone. 25 #12;The Month . . . continued solar panels extended. The space environment simu of the tower contains a solar simulation unit which is designed to simulate the varying intensity of sunlight of its kind in the United States, consists of a 10,000-square-foot building to house offices, a control

  11. SIMULATION OF RESIDENTIAL HVAC SYSTEM PERFORMANCE

    E-Print Network [OSTI]

    1 LBNL-47622 SIMULATION OF RESIDENTIAL HVAC SYSTEM PERFORMANCE Walker, I., Siegel, J ..................................................... 9 #12;3 ABSTRACT In many parts of North America residential HVAC systems are installed outside of the simulations is that they are dynamic - which accounts for cyclic losses from the HVAC system and the effect

  12. Molecular Simulation of Nanofluids Mark J. Biggs

    E-Print Network [OSTI]

    Adler, Joan

    Molecular Simulation of Nanofluids Mark J. Biggs School of Chemical Engineering, The University of Adelaide, South Australia, Australia, 5005. mark.biggs@adelaide.edu.au Models of nanofluid systems ­ which suited in many cases to those of nanofluid systems. It is for this reason that molecular simulation has

  13. Numerical Simulations of Thermobaric Explosions

    SciTech Connect (OSTI)

    Kuhl, A L; Bell, J B; Beckner, V E; Khasainov, B

    2007-05-04T23:59:59.000Z

    A Model of the energy evolution in thermobaric explosions is presented. It is based on the two-phase formulation: conservation laws for the gas and particle phases along with inter-phase interaction terms. It incorporates a Combustion Model based on the mass conservation laws for fuel, air and products; source/sink terms are treated in the fast-chemistry limit appropriate for such gas dynamic fields. The Model takes into account both the afterburning of the detonation products of the booster with air, and the combustion of the fuel (Al or TNT detonation products) with air. Numerical simulations were performed for 1.5-g thermobaric explosions in five different chambers (volumes ranging from 6.6 to 40 liters and length-to-diameter ratios from 1 to 12.5). Computed pressure waveforms were very similar to measured waveforms in all cases - thereby proving that the Model correctly predicts the energy evolution in such explosions. The computed global fuel consumption {mu}(t) behaved as an exponential life function. Its derivative {dot {mu}}(t) represents the global rate of fuel consumption. It depends on the rate of turbulent mixing which controls the rate of energy release in thermobaric explosions.

  14. Simulating Collisions for Hydrokinetic Turbines

    SciTech Connect (OSTI)

    Richmond, Marshall C.; Romero Gomez, Pedro DJ; Rakowski, Cynthia L.

    2013-10-01T23:59:59.000Z

    Evaluations of blade-strike on an axial-flow Marine Hydrokinetic turbine were conducted using a conventional methodology as well as an alternative modeling approach proposed in the present document. The proposed methodology integrates the following components into a Computa- tional Fluid Dynamics (CFD) model: (i) advanced eddy-resolving flow simulations, (ii) ambient turbulence based on field data, (iii) moving turbine blades in highly transient flows, and (iv) Lagrangian particles to mimic the potential fish pathways. The sensitivity of blade-strike prob- ability to the following conditions was also evaluated: (i) to the turbulent environment, (ii) to fish size and (iii) to mean stream flow velocity. The proposed methodology provided fraction of collisions and offered the capability of analyzing the causal relationships between the flow envi- ronment and resulting strikes on rotating blades. Overall, the conventional methodology largely overestimates the probability of strike, and lacks the ability to produce potential fish and aquatic biota trajectories as they interact with the rotating turbine. By using a set of experimental corre- lations of exposure-response of living fish colliding on moving blades, the occurrence, frequency and intensity of the particle collisions was next used to calculate the survival rate of fish crossing the MHK turbine. This step indicated survival rates always greater than 98%. Although the proposed CFD framework is computationally more expensive, it provides the advantage of evaluating multiple mechanisms of stress and injury of hydrokinetic turbine devices on fish.

  15. Simulations of superhumps and superoutbursts

    E-Print Network [OSTI]

    James Murray

    1997-10-22T23:59:59.000Z

    We numerically study the tidal instability of accretion discs in close binary systems using a two-dimensional SPH code. We find that the precession rate of tidally unstable, eccentric discs does not only depend upon the binary mass ratio q. Although the (prograde) disc precession rate increases with the strength of the tidal potential, it also increases with the shear viscosity. Increasing the disc temperature has a retrograde impact upon the precession rate. We find that motion relative to the binary potential results in superhump-like, periodic luminosity variations in the outer reaches of an eccentric disc. The nature and location of the luminosity modulation is a function of the shear viscosity, nu. Light curves most similar to observations are obtained for nu values appropriate for a dwarf nova in outburst. We investigate the thermal-tidal instability model for superoutburst. A dwarf nova outburst is simulated by instantaneously increasing nu, which causes a rapid radial expansion of the disc. Should the disc encounter the 3:1 eccentric inner Lindblad resonance and become tidally unstable, then tidal torques become much more efficient at removing angular momentum from the disc. The disc then shrinks and mass flux through the disc increases. The resulting increase in disc luminosity is found to be consistent with the excess luminosity of a superoutburst.

  16. A NEW GENERATION CHEMICAL FLOODING SIMULATOR

    SciTech Connect (OSTI)

    Gary A. Pope; Kamy Sepehrnoori; Mojdeh Delshad

    2005-01-01T23:59:59.000Z

    The premise of this research is that a general-purpose reservoir simulator for several improved oil recovery processes can and should be developed so that high-resolution simulations of a variety of very large and difficult problems can be achieved using state-of-the-art algorithms and computers. Such a simulator is not currently available to the industry. The goal of this proposed research is to develop a new-generation chemical flooding simulator that is capable of efficiently and accurately simulating oil reservoirs with at least a million gridblocks in less than one day on massively parallel computers. Task 1 is the formulation and development of solution scheme, Task 2 is the implementation of the chemical module, and Task 3 is validation and application. In this final report, we will detail our progress on Tasks 1 through 3 of the project.

  17. Method for simulating discontinuous physical systems

    DOE Patents [OSTI]

    Baty, Roy S. (Albuquerque, NM); Vaughn, Mark R. (Albuquerque, NM)

    2001-01-01T23:59:59.000Z

    The mathematical foundations of conventional numerical simulation of physical systems provide no consistent description of the behavior of such systems when subjected to discontinuous physical influences. As a result, the numerical simulation of such problems requires ad hoc encoding of specific experimental results in order to address the behavior of such discontinuous physical systems. In the present invention, these foundations are replaced by a new combination of generalized function theory and nonstandard analysis. The result is a class of new approaches to the numerical simulation of physical systems which allows the accurate and well-behaved simulation of discontinuous and other difficult physical systems, as well as simpler physical systems. Applications of this new class of numerical simulation techniques to process control, robotics, and apparatus design are outlined.

  18. An Evaluation of the Network Simulators in Large-Scale Distributed Simulations

    SciTech Connect (OSTI)

    Ciraci, Selim; Akyol, Bora A.

    2011-11-13T23:59:59.000Z

    This is a survey paper about the state-of-the-art in large-scale network simulation. Networks for the smart grids are characterized by millions of sensor nodes exchanging information about the status of the grid. This information exchange must be realized reliably and efficiently due to the mission critical nature of the power grid. Hence, the applications and the network protocols developed for the smart grid need go through rigorous testing and analysis before deployment. Developers usually do not have access to such a large-scale network that can be used as a controlled test-bed; therefore, network simulation becomes an essential tool for testing. Network simulation is a well studied problem in the literature and there are various widely used network simulators. These simulators can be adopted for testing applications and protocols of the smart grid. Due to the scale of these networks, parallel/distributed simulations need to be conducted. Even though most network simulators support distributed simulations, generating a large-scale network model to simulate can still be a cumbersome task. In this survey, we describe a selection of commonly used network simulators and evaluate them with respect to the following features that can aid users in distributed simulations of large-scale networks: transparency of setting up distributed simulation, automated topology generation, information hiding, lightweight routing protocols, network error simulation, evaluation of the network model during simulation and trace analysis tools. As a complementary result, we identify two issues with network simulators that can be addressed with runtime steering methods.

  19. Morphology of Gas Release in Physical Simulants

    SciTech Connect (OSTI)

    Daniel, Richard C.; Burns, Carolyn A.; Crawford, Amanda D.; Hylden, Laura R.; Bryan, Samuel A.; MacFarlan, Paul J.; Gauglitz, Phillip A.

    2014-07-03T23:59:59.000Z

    This report documents testing activities conducted as part of the Deep Sludge Gas Release Event Project (DSGREP). The testing described in this report focused on evaluating the potential retention and release mechanisms of hydrogen bubbles in underground radioactive waste storage tanks at Hanford. The goal of the testing was to evaluate the rate, extent, and morphology of gas release events in simulant materials. Previous, undocumented scoping tests have evidenced dramatically different gas release behavior from simulants with similar physical properties. Specifically, previous gas release tests have evaluated the extent of release of 30 Pa kaolin and 30 Pa bentonite clay slurries. While both materials are clays and both have equivalent material shear strength using a shear vane, it was found that upon stirring, gas was released immediately and completely from bentonite clay slurry while little if any gas was released from the kaolin slurry. The motivation for the current work is to replicate these tests in a controlled quality test environment and to evaluate the release behavior for another simulant used in DSGREP testing. Three simulant materials were evaluated: 1) a 30 Pa kaolin clay slurry, 2) a 30 Pa bentonite clay slurry, and 3) Rayleigh-Taylor (RT) Simulant (a simulant designed to support DSGREP RT instability testing. Entrained gas was generated in these simulant materials using two methods: 1) application of vacuum over about a 1-minute period to nucleate dissolved gas within the simulant and 2) addition of hydrogen peroxide to generate gas by peroxide decomposition in the simulants over about a 16-hour period. Bubble release was effected by vibrating the test material using an external vibrating table. When testing with hydrogen peroxide, gas release was also accomplished by stirring of the simulant.

  20. Call for Papers ACM Transactions on Modeling and Computer Simulation

    E-Print Network [OSTI]

    L'Ecuyer, Pierre

    simulation, improving the efficiency of simulations for those large systems, building effective and flexibleCall for Papers ACM Transactions on Modeling and Computer Simulation Special Issue on Simulation Pierre L'Ecuyer, University of Montreal In connection with the 2011 INFORMS Simulation Society Research

  1. Course Announcement CIS 786: Simulation and Modeling for

    E-Print Network [OSTI]

    Lin, Xiaodong

    are to learn how to plan, build and use simulation models and to develop an understanding of when simulation and software tools for building simulation models, performing experiments with them, and interpreting the results. To build simulation models, we will make use the software package ARENA, a popular simulation

  2. Evaluating uncertainty in stochastic simulation models

    SciTech Connect (OSTI)

    McKay, M.D.

    1998-02-01T23:59:59.000Z

    This paper discusses fundamental concepts of uncertainty analysis relevant to both stochastic simulation models and deterministic models. A stochastic simulation model, called a simulation model, is a stochastic mathematical model that incorporates random numbers in the calculation of the model prediction. Queuing models are familiar simulation models in which random numbers are used for sampling interarrival and service times. Another example of simulation models is found in probabilistic risk assessments where atmospheric dispersion submodels are used to calculate movement of material. For these models, randomness comes not from the sampling of times but from the sampling of weather conditions, which are described by a frequency distribution of atmospheric variables like wind speed and direction as a function of height above ground. A common characteristic of simulation models is that single predictions, based on one interarrival time or one weather condition, for example, are not nearly as informative as the probability distribution of possible predictions induced by sampling the simulation variables like time and weather condition. The language of model analysis is often general and vague, with terms having mostly intuitive meaning. The definition and motivations for some of the commonly used terms and phrases offered in this paper lead to an analysis procedure based on prediction variance. In the following mathematical abstraction the authors present a setting for model analysis, relate practical objectives to mathematical terms, and show how two reasonable premises lead to a viable analysis strategy.

  3. Assembly flow simulation of a radar

    SciTech Connect (OSTI)

    Rutherford, W.C.; Biggs, P.M.

    1993-10-01T23:59:59.000Z

    A discrete event simulation model has been developed to predict the assembly flow time of a new radar product. The simulation was the key tool employed to identify flow constraints. The radar, production facility, and equipment complement were designed, arranged, and selected to provide the most manufacturable assembly possible. A goal was to reduce the assembly and testing cycle time from twenty-six weeks to six weeks. A computer software simulation package (SLAM II) was utilized as the foundation a for simulating the assembly flow time. FORTRAN subroutines were incorporated into the software to deal with unique flow circumstances that were not accommodated by the software. Detailed information relating to the assembly operations was provided by a team selected from the engineering, manufacturing management, inspection, and production assembly staff. The simulation verified that it would be possible to achieve the cycle time goal of six weeks. Equipment and manpower constraints were identified during the simulation process and adjusted as required to achieve the flow with a given monthly production requirement. The simulation is being maintained as a planning tool to be used to identify constraints in the event that monthly output is increased. ``What-if`` studies have been conducted to identify the cost of reducing constraints caused by increases in output requirement.

  4. The incorporation of bubbles into a computer graphics fluid simulation

    E-Print Network [OSTI]

    Greenwood, Shannon Thomas

    2005-08-29T23:59:59.000Z

    We present methods for incorporating bubbles into a photorealistc fluid simulation. Previous methods of fluid simulation in computer graphics do not include bubbles. Our system automatically creates bubbles, which are simulated on top of the fluid...

  5. Interactive Simulation of Surgical Needle Insertion and Steering

    E-Print Network [OSTI]

    Chentanez, Nuttapong

    2010-01-01T23:59:59.000Z

    47] Dinesh K. Pai. STRANDS: Interactive simulation of thinand James F. O’Brien. Interactive simulation of surgicalM. Gr´egoire and E. Sch¨omer. Interactive simulation of one-

  6. Revamped Simulation Tool to Power Up Wave Energy Development...

    Energy Savers [EERE]

    Revamped Simulation Tool to Power Up Wave Energy Development Revamped Simulation Tool to Power Up Wave Energy Development May 21, 2015 - 2:40pm Addthis Revamped Simulation Tool to...

  7. Advanced wellbore thermal simulator GEOTEMP2 research report

    SciTech Connect (OSTI)

    Mitchell, R.F.

    1982-02-01T23:59:59.000Z

    The development of the GEOTEMP2 wellbore thermal simulator is described. The major technical features include a general purpose air and mist drilling simulator and a two-phase steam flow simulator that can model either injection or production.

  8. Where Simulation meets Reality Arthur Huang, David Levinson

    E-Print Network [OSTI]

    Minnesota, University of

    (Simulation of Network Growth) SAND (Simulation and Analysis of Network Design) CLUSTER (Clustered Locations Signal Control Module #12;ADAM Agent-based model of travel patterns #12;SONG Simulating transportation

  9. Co-simulation of innovative integrated HVAC systems in buildings

    E-Print Network [OSTI]

    Trcka, Marija

    2010-01-01T23:59:59.000Z

    General-Purpose Approach for Co-Simulation with ADAMS. In :and to scale the use of co-simulation to a large communitymore research and development. Co-simulation has been

  10. Fast time domain simulation for large order hybrid systems

    E-Print Network [OSTI]

    Sou, Kin Cheong, 1979-

    2002-01-01T23:59:59.000Z

    Simulation is an important tool for the analysis and design of complex systems. As the models become more and more complex, more powerful simulation methods are desired. As an attempt to address this problem, a simulation ...

  11. Pharmaceutical powders in experiment and simulation : towards a fundamental understanding

    E-Print Network [OSTI]

    Domike, Reuben Dumont, 1979-

    2004-01-01T23:59:59.000Z

    (cont.) The DEM simulation was used to simulate the relative importance of cohesion and friction. For angle of repose simulations, increasing the cohesion increased the final angle in a consistent, linear fashion. Increasing ...

  12. Interactive Simulation of Stylized Human Locomotion

    E-Print Network [OSTI]

    Silva, Marco da

    2008-08-01T23:59:59.000Z

    Animating natural human motion in dynamic environments is difficult because of complex geometric and physical interactions. Simulation provides an automatic solution to parts of this problem, but it needs control systems ...

  13. Compositional changes in heavy oil steamflood simulators

    E-Print Network [OSTI]

    Lolley, Christopher Scott

    1995-01-01T23:59:59.000Z

    including distillation, vapor pressure, steam distillation and viscosity measurements, along with a commercial PVT simulator are used to tune equation-of-state (EOS) and viscosity parameters to properly model the PVT properties of the oil. The Peng...

  14. Simulation Models for Improved Water Heating Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2014-01-01T23:59:59.000Z

    and Simulation of a Smart Water Heater. ” In Workshop inFreezers, Furnaces, Water Heaters, Room and Central AirNovember. ADL. 1982b. Water Heater Computer Model User’s

  15. Computer simulations of polymers and gels 

    E-Print Network [OSTI]

    Wood, Dean

    2013-11-28T23:59:59.000Z

    plethora of simulation techniques have been developed and refined, allowing many aspects of complex systems to be demystified. I have used a range of these to study a variety of systems, utilising the latest technology in high performance computing (HPC...

  16. Large-scale simulations of reionization

    SciTech Connect (OSTI)

    Kohler, Katharina; /JILA, Boulder /Fermilab; Gnedin, Nickolay Y.; /Fermilab; Hamilton, Andrew J.S.; /JILA, Boulder

    2005-11-01T23:59:59.000Z

    We use cosmological simulations to explore the large-scale effects of reionization. Since reionization is a process that involves a large dynamic range--from galaxies to rare bright quasars--we need to be able to cover a significant volume of the universe in our simulation without losing the important small scale effects from galaxies. Here we have taken an approach that uses clumping factors derived from small scale simulations to approximate the radiative transfer on the sub-cell scales. Using this technique, we can cover a simulation size up to 1280h{sup -1} Mpc with 10h{sup -1} Mpc cells. This allows us to construct synthetic spectra of quasars similar to observed spectra of SDSS quasars at high redshifts and compare them to the observational data. These spectra can then be analyzed for HII region sizes, the presence of the Gunn-Peterson trough, and the Lyman-{alpha} forest.

  17. Improved Solvers for Advanced Engine Combustion Simulation

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

    53560 Improved Solvers for Advanced Engine Combustion Simulation M. J. McNenly (PI), S. M. Aceves, D. L. Flowers, N. J. Killingsworth, G. M. Oxberry, G. Petitpas and R. A....

  18. Simulation and animation of a slinky

    E-Print Network [OSTI]

    Maxey, Mark Ray

    1994-01-01T23:59:59.000Z

    Animations of complex objects using traditional techniques often lack the dynamic integrity needed to produce realistic natural motion. Recently, dynamic simulation has been used to incorporate not only the spatial information, but the various...

  19. A low cost high flux solar simulator

    E-Print Network [OSTI]

    Codd, Daniel S.

    A low cost, high flux, large area solar simulator has been designed, built and characterized for the purpose of studying optical melting and light absorption behavior of molten salts. Seven 1500 W metal halide outdoor ...

  20. MODELING, SIMULATION AND OPTIMIZATION OF GROUND SOURCE

    E-Print Network [OSTI]

    MODELING, SIMULATION AND OPTIMIZATION OF GROUND SOURCE HEAT PUMP SYSTEMS By MUHAMMAD HAIDER KHAN AND OPTIMIZATION OF GROUND SOURCE HEAT PUMP SYSTEMS Thesis Approved..................................................................................................................... 1 1.1 Overview of Ground Source Heat Pump Systems.............................................. 1 1

  1. Simulated liquid argon interactions with neutrons

    E-Print Network [OSTI]

    Harrington, Kathleen M

    2012-01-01T23:59:59.000Z

    The GEANT4 physics simulation program is known to have errors in how hadronic interactions are implemented. This has the potential to cause errors in the Monte Carlos used to determine the expected neutron backgrounds in ...

  2. Collaborative Monitoring and Analysis for Simulation Scientist

    SciTech Connect (OSTI)

    Tchoua, Roselyne B [ORNL] [ORNL; Klasky, Scott A [ORNL] [ORNL; Podhorszki, Norbert [ORNL] [ORNL; Khan, Ayla Y [ORNL] [ORNL; Mouallem, P. A. [North Carolina State University] [North Carolina State University; Vouk, Mladen [North Carolina State University] [North Carolina State University

    2010-01-01T23:59:59.000Z

    Collaboratively monitoring and analyzing large scale simulations from petascale computers is an important area of research and development within the scientific community. This paper addresses these issues when teams of colleagues from different research areas work together to help understand the complex data generated from these simulations. In particular, we address the issues when geographically diverse teams of disparate researchers work together to understand the complex science being simulation on high performance computers. Most application scientists want to focus on the sciences and spend a minimum amount of time learning new tools or adopting new techniques to monitor and analyze their simulation data. The challenge eSimMon, of our web-based system is to decrease or eliminate some of the hurdles on the scientists path to scientific discovery, and allow these collaborations to flourish.

  3. COLLOQUIUM: Advanced Simulation for Technology Innovation and...

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

    27, 2015, 4:00pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: Advanced Simulation for Technology Innovation and Science Discovery Dr. Scott Stanton ANSYS, Inc. Colloquium...

  4. Streamline simulation of Surfactant Enhanced Aquifer Remediation

    E-Print Network [OSTI]

    Tunison, Douglas Irvin

    1996-01-01T23:59:59.000Z

    and cumulative production histories. The model is three dimensional and capable of modeling heterogeneity anisotropy. The SEAR simulator models mobilization of residual NAPL through the effects of surfactant on the relative permeability curves. The solubilization...

  5. Transportation Analysis, Modeling, and Simulation (TAMS) Application

    E-Print Network [OSTI]

    Transportation Analysis, Modeling, and Simulation (TAMS) Application Center for Transportation Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle Technologies T he Center for Transportation Analysis (CTA) TAMS application is a web-based tool that supports

  6. Interactive simulation of fire, burn and decomposition

    E-Print Network [OSTI]

    Melek, Zeki

    2009-05-15T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . 86 35 Simulation control in action. . . . . . . . . . . . . . . . . . . . . . . . 89 36 Burning a log and a Siggraph logo. . . . . . . . . . . . . . . . . . . . 95 37 Two sets of quadrilateral stacks are used for different camera angles. 97 38...

  7. Interactive simulation of fire, burn and decomposition

    E-Print Network [OSTI]

    Melek, Zeki

    2008-10-10T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . 86 35 Simulation control in action. . . . . . . . . . . . . . . . . . . . . . . . 89 36 Burning a log and a Siggraph logo. . . . . . . . . . . . . . . . . . . . 95 37 Two sets of quadrilateral stacks are used for different camera angles. 97 38...

  8. THERM 5 / WINDOW 5 NFRC simulation manual

    SciTech Connect (OSTI)

    Mitchell, Robin; Kohler, Christian; Arasteh, Dariush; Carmody, John; Huizenga, Charlie; Curcija, Dragan

    2003-06-01T23:59:59.000Z

    This document, the ''THERM 5/WINDOW 5 NFRC Simulation Manual', discusses how to use the THERM and WINDOW programs to model products for NFRC certified simulations and assumes that the user is already familiar with those programs. In order to learn how to use these programs, it is necessary to become familiar with the material in both the ''THERM User's Manual'' and the ''WINDOW User's Manual''. In general, this manual references the User's Manuals rather than repeating the information. If there is a conflict between either of the User Manual and this ''THERM 5/''WINDOW 5 NFRC Simulation Manual'', the ''THERM 5/WINDOW 5 NFRC Simulation Manual'' takes precedence. In addition, if this manual is in conflict with any NFRC standards, the standards take precedence. For example, if samples in this manual do not follow the current taping and testing NFRC standards, the standards not the samples in this manual, take precedence.

  9. Modelling and Simulating of Rain Derivatives

    E-Print Network [OSTI]

    Modelling and Simulating of Rain Derivatives Master thesis Cathrin van Emmerich Supervisor, Februar 2005 Cathrin van Emmerich i #12;Table of Contents Table of Contents ii 1 Introduction 1 2

  10. Refinery burner simulation design architecture summary.

    SciTech Connect (OSTI)

    Pollock, Guylaine M.; McDonald, Michael James; Halbgewachs, Ronald D.

    2011-10-01T23:59:59.000Z

    This report describes the architectural design for a high fidelity simulation of a refinery and refinery burner, including demonstrations of impacts to the refinery if errors occur during the refinery process. The refinery burner model and simulation are a part of the capabilities within the Sandia National Laboratories Virtual Control System Environment (VCSE). Three components comprise the simulation: HMIs developed with commercial SCADA software, a PLC controller, and visualization software. All of these components run on different machines. This design, documented after the simulation development, incorporates aspects not traditionally seen in an architectural design, but that were utilized in this particular demonstration development. Key to the success of this model development and presented in this report are the concepts of the multiple aspects of model design and development that must be considered to capture the necessary model representation fidelity of the physical systems.

  11. Modeling techniques for simulating well behavior

    E-Print Network [OSTI]

    Rattu, Bungen Christina

    2002-01-01T23:59:59.000Z

    This thesis is a catalog of modeling techniques useful in simulating well behavior in certain types of reservoirs that are often encountered in petroleum reservoirs. Emphasis has been placed on techniques that can be used with any conventional...

  12. Groundwater Recharge Simulator M. Tech. Thesis

    E-Print Network [OSTI]

    Sohoni, Milind

    Groundwater Recharge Simulator M. Tech. Thesis by Dharmvir Kumar Roll No: 07305902 Guide: Prof;Contents 1 Introduction 1 1.1 Groundwater Theory.1.5 Groundwater Flow Equation . . . . . . . . . . . . . . . . . . . . . . 11 1.2 Numerical Solvers and Boundary

  13. A Course in Scientific Modeling and Simulation

    E-Print Network [OSTI]

    O'Leary, Michael

    A Course in Scientific Modeling and Simulation Mike O'Leary Shiva Azadegan Academx Publishing Copyright © 2003 by Mike O'Leary and Shiva Azadegan All rights reserved. No part of this publication may

  14. Polarization transmission at RHIC, numerical simulations

    SciTech Connect (OSTI)

    Meot F.; Bai, M.; Liu, C.; Minty, M.; Ranjbar, V.

    2012-05-20T23:59:59.000Z

    Typical tracking simulations regarding the transmission of the polarization in the proton-proton collider RHIC are discussed. They participate in general studies aimed at understanding and improving polarization performances during polarized proton-proton runs.

  15. Using FPGA Devices to Accelerate Biomolecular Simulations

    SciTech Connect (OSTI)

    Alam, Sadaf R [ORNL; Agarwal, Pratul K [ORNL; Smith, Melissa C [ORNL; Vetter, Jeffrey S [ORNL; Caliga, David E [ORNL

    2007-03-01T23:59:59.000Z

    A field-programmable gate array implementation of the particle-mesh Ewald a molecular dynamics simulation method reduces the microprocessor time-to-solution by a factor of three while using only high-level languages. The application speedup on FPGA devices increases with the problem size. The authors use a performance model to analyze the potential of simulating large-scale biological systems faster than many cluster-based supercomputing platforms.

  16. Simulating plant motion with levels of detail

    E-Print Network [OSTI]

    Flannery, Rebecca Lynn

    2013-02-22T23:59:59.000Z

    SIMULATING PLANT MOTION WITH LEVELS OF DETAIL A Senior Honors Thesis by REBECCA LYNN FLANNERY Submitted to the Office of Honors Programs k. Academic Scholarships Texas AkM University in partial fulfillment of the requirements... of the UNIVERSITY UNDERGRADUATE RESEARCH FELLOWS April 2003 Group: Engineering & Physics I SIMULATING PLANT MOTION WITH LEVELS OF DETAIL A Senior Honors Thesis by REBECCA LYNN FLANNERY Submitted to the Office of Honors Programs & Academic Scholarships...

  17. Using Simulation Models for Building Commissioning

    E-Print Network [OSTI]

    Claridge, D. E.

    2004-01-01T23:59:59.000Z

    , Sweden. This building utilizes multiple innovative HVAC systems. They used the IDA simulation environment to assess these untested HVAC-solutions and for dimensioning. During the initial commissioning they evaluated the performance using extensive... D2 is titled Use of Whole Building Simulation in Commissioning. Regular participants of the subtask meetings have included Oliver Baumann (Germany), David Claridge, Chair (USA), Jorgen Eriksson (Sweden), Nestor Fonseca, Johnny Holst (Norway), Per...

  18. PV array simulator development and validation.

    SciTech Connect (OSTI)

    Kuszmaul, Scott S.; Gonzalez, Sigifredo; Lucca, Roberto (Ametek Programmable Power, San Diego, CA); Deuel, Don (Ametek Programmable Power, San Diego, CA)

    2010-06-01T23:59:59.000Z

    The ability to harvest all available energy from a photovoltaic (PV) array is essential if new system developments are to meet levelized cost of energy targets and achieve grid parity with conventional centralized utility power. Therefore, exercising maximum power point tracking (MPPT) algorithms, dynamic irradiance condition operation and startup and shutdown routines and evaluating inverter performance with various PV module fill-factor characteristics must be performed with a repeatable, reliable PV source. Sandia National Laboratories is collaborating with Ametek Programmable Power to develop and demonstrate a multi-port TerraSAS PV array simulator. The simulator will replicate challenging PV module profiles, enabling the evaluation of inverter performance through analyses of the parameters listed above. Energy harvest algorithms have traditionally implemented methods that successfully utilize available energy. However, the quantification of energy capture has always been difficult to conduct, specifically when characterizing the inverter performance under non-reproducible dynamic irradiance conditions. Theoretical models of the MPPT algorithms can simulate capture effectiveness, but full validation requires a DC source with representative field effects. The DC source being developed by Ametek and validated by Sandia is a fully integrated system that can simulate an IV curve from the Solar Advisor Model (SAM) module data base. The PV simulator allows the user to change the fill factor by programming the maximum power point voltage and current parameters and the open circuit voltage and short circuit current. The integrated PV simulator can incorporate captured irradiance and module temperature data files for playback, and scripted profiles can be generated to validate new emerging hardware embedded with existing and evolving MPPT algorithms. Since the simulator has multiple independent outputs, it also has the flexibility to evaluate an inverter with multiple MPPT DC inputs. The flexibility of the PV simulator enables the validation of the inverter's capability to handle vastly different array configurations.

  19. Simlag: Simulation language for genetic populations

    E-Print Network [OSTI]

    Pfaffenberger, Roger C.

    1968-01-01T23:59:59.000Z

    program he developed was capable of simulating diploid individuals with ten loci and with one or two linkage groups per genotype. Different; phenotypic values could be assigned. at any given locus. Further, the program could simulate additive... of linkage on the rate of advance under selection with a system of diploid individuals, each characterized by two autosomal chromosomes of three genes. Recombination values ranging from r=0. 0 to r=0. 5 were used. Only the situation of complete dominance...

  20. Simulating airline operational responses to environmental constraints

    E-Print Network [OSTI]

    Evans, Antony

    2010-10-12T23:59:59.000Z

    from 1976, airlines retired older, noisier equipment and purchased new, quieter aircraft (de Neufville and Odoni, 2003, p182). Similarly, airlines responded to the sharp increases in oil prices in 2008 by retiring older, less fuel efficient aircraft... , and the flight network to be simulated. Airline competition is modeled by simulating a strategic game between airlines competing for market share, each of which maximizes its own profit. The model is validated by reproducing historical passenger flows...

  1. Development Plan for the Fuel Cycle Simulator

    SciTech Connect (OSTI)

    Brent Dixon

    2011-09-01T23:59:59.000Z

    The Fuel Cycle Simulator (FCS) project was initiated late in FY-10 as the activity to develop a next generation fuel cycle dynamic analysis tool for achieving the Systems Analysis Campaign 'Grand Challenge.' This challenge, as documented in the Campaign Implementation Plan, is to: 'Develop a fuel cycle simulator as part of a suite of tools to support decision-making, communication, and education, that synthesizes and visually explains the multiple attributes of potential fuel cycles.'

  2. Simulation framework for intelligent transportation systems

    SciTech Connect (OSTI)

    Ewing, T.; Doss, E.; Hanebutte, U.; Tentner, A.

    1996-10-01T23:59:59.000Z

    A simulation framework has been developed for a large-scale, comprehensive, scaleable simulation of an Intelligent Transportation System (ITS). The simulator is designed for running on parallel computers and distributed (networked) computer systems, but can run on standalone workstations for smaller simulations. The simulator currently models instrumented smart vehicles with in-vehicle navigation units capable of optimal route planning and Traffic Management Centers (TMC). The TMC has probe vehicle tracking capabilities (display position and attributes of instrumented vehicles), and can provide two-way interaction with traffic to provide advisories and link times. Both the in-vehicle navigation module and the TMC feature detailed graphical user interfaces to support human-factors studies. Realistic modeling of variations of the posted driving speed are based on human factors studies that take into consideration weather, road conditions, driver personality and behavior, and vehicle type. The prototype has been developed on a distributed system of networked UNIX computers but is designed to run on parallel computers, such as ANL`s IBM SP-2, for large-scale problems. A novel feature of the approach is that vehicles are represented by autonomous computer processes which exchange messages with other processes. The vehicles have a behavior model which governs route selection and driving behavior, and can react to external traffic events much like real vehicles. With this approach, the simulation is scaleable to take advantage of emerging massively parallel processor (MPP) systems.

  3. Model Validation with Hybrid Dynamic Simulation

    SciTech Connect (OSTI)

    Huang, Zhenyu; Kosterev, Dmitry; Guttromson, Ross T.; Nguyen, Tony B.

    2006-06-22T23:59:59.000Z

    Abstract—Model validation has been one of the central topics in power engineering studies for years. As model validation aims at obtaining reasonable models to represent actual behavior of power system components, it has been essential to validate models against actual measurements or known benchmark behavior. System-wide model simulation results can be compared with actual recordings. However, it is difficult to construct a simulation case for a large power system such as the WECC system and to narrow down to problematic models in a large system. Hybrid dynamic simulation with its capability of injecting external signals into dynamic simulation enables rigorous comparison of measurements and simulation in a small subsystem of interest. This paper presents such a model validation methodology with hybrid dynamic simulation. Two application examples on generator and load model validation are presented to show the validity of this model validation methodology. This methodology is further extended for automatic model validation and dichotomous subsystem model validation. A few methods to define model quality indices have been proposed to quantify model error for model validation criteria development.

  4. Pore-Scale Simulation of Intragranular Diffusion: Effects of...

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

    Simulation of Intragranular Diffusion: Effects of Incomplete Mixing on Macroscopic Manifestations. Pore-Scale Simulation of Intragranular Diffusion: Effects of Incomplete Mixing on...

  5. 3-D Combustion Simulation Strategy Status, Future Potential,...

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

    Combustion Simulation Strategy Status, Future Potential, and Application Issues 3-D Combustion Simulation Strategy Status, Future Potential, and Application Issues 2004 Diesel...

  6. Assessment of Combustion and Turbulence Models for the Simulation...

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

    Combustion and Turbulence Models for the Simulation of Combustion Processes in a DI Diesel Engine Assessment of Combustion and Turbulence Models for the Simulation of Combustion...

  7. Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid...

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

    Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase Berkeley Lab research could help...

  8. Computer Simulation of Uranyl Uptake by the Rough Lipopolysaccharide...

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

    Computer Simulation of Uranyl Uptake by the Rough Lipopolysaccharide Membrane of Pseudomonas aeruginosa. Computer Simulation of Uranyl Uptake by the Rough Lipopolysaccharide...

  9. Home Energy Score Update: New Simulation Training and Credential...

    Energy Savers [EERE]

    Update: New Simulation Training and Credential Requirements for Assessors Home Energy Score Update: New Simulation Training and Credential Requirements for Assessors Home Energy...

  10. Molecular simulations of the transport of molecules across the...

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

    simulations of the transport of molecules across the liquidvapor interface of water. Molecular simulations of the transport of molecules across the liquidvapor interface of...

  11. Molecular dynamics simulation and ab intio studies of electrolytes...

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

    Molecular dynamics simulation and ab intio studies of electrolytes and electrolyteelectrode interfaces Molecular dynamics simulation and ab intio studies of electrolytes and...

  12. atomistic molecular simulation: Topics by E-print Network

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

    22 23 24 25 Next Page Last Page Topic Index 1 Simulational nanoengineering: Molecular dynamics implementation of an atomistic Stirling engine Physics Websites Summary: Simulational...

  13. Atomic detail brownian dynamics simulations of concentrated protein...

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

    detail brownian dynamics simulations of concentrated protein solutions with a mean field treatment of hydrodynamic Atomic detail brownian dynamics simulations of concentrated...

  14. Molecular dynamics simulations of ion range profiles for heavy...

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

    simulations of ion range profiles for heavy ions in light targets. Molecular dynamics simulations of ion range profiles for heavy ions in light targets. Abstract: The determination...

  15. NOx Adsorbers for Heavy Duty Truck Engines - Testing and Simulation...

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

    Adsorbers for Heavy Duty Truck Engines - Testing and Simulation NOx Adsorbers for Heavy Duty Truck Engines - Testing and Simulation This report provides the results of an...

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

    Office of Environmental Management (EM)

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

  17. HEAVY-DUTY TRUCK EMISSIONS AND FUEL CONSUMPTION SIMULATING REAL...

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

    AND FUEL CONSUMPTION SIMULATING REAL-WORLD DRIVING IN LABORATORY CONDITIONS HEAVY-DUTY TRUCK EMISSIONS AND FUEL CONSUMPTION SIMULATING REAL-WORLD DRIVING IN LABORATORY...

  18. Home Energy Score Update: New Simulation Training & Credential...

    Energy Savers [EERE]

    Home Energy Score Update: New Simulation Training & Credential Requirements for Assessors Home Energy Score Update: New Simulation Training & Credential Requirements for Assessors...

  19. Atomistic Simulation of the Size and Orientation Dependences...

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

    by applying nonequilibrium atomistic simulation methods using the Stillinger-Weber Phys. Rev. B 31, 5262 (1985) potentials. The simulation results show that the...

  20. Operational Simulation Tools and Long Term Strategic Planning...

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

    Operational Simulation Tools and Long Term Strategic Planning for High Penetrations of PV in the Southeastern U.S. Operational Simulation Tools and Long Term Strategic Planning for...

  1. Agent-Based Modeling and Simulation for Hydrogen Transition Analysis...

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

    Agent-Based Modeling and Simulation for Hydrogen Transition Analysis Agent-Based Modeling and Simulation for Hydrogen Transition Analysis Presentation on Agent-Based Modeling and...

  2. A Prototype for Graphene Material Simulation: Structures and...

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

    Prototype for Graphene Material Simulation: Structures and Interaction Potentials ofCoronene Dimers. A Prototype for Graphene Material Simulation: Structures and Interaction...

  3. Water at an electrochemical interface - a simulation study

    E-Print Network [OSTI]

    Willard, Adam

    2009-01-01T23:59:59.000Z

    simulations of redox active molten salts [18]. We begin withthe ?ndings in the molten salt simulations [16]. Thefor a redox-active molten salt system [18], where the

  4. Molecular Dynamics Simulations of Uranyl and Uranyl Carbonate...

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

    Simulations of Uranyl and Uranyl Carbonate Adsorption at Alumino-silicate Surfaces. Molecular Dynamics Simulations of Uranyl and Uranyl Carbonate Adsorption at Alumino-silicate...

  5. Sandia National Laboratories: quan-tifying and simulating solar...

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

    quan-tifying and simulating solar-plant variability using irradiance data Sandia PV Team Publishes Book Chapter On January 21, 2014, in Computational Modeling & Simulation, Energy,...

  6. Atomic-Level Simulations of Epitaxial Recrystallization andAmorphous...

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

    Simulations of Epitaxial Recrystallization and Amorphous-to-Crystalline Transition in 4H-SiC. Atomic-Level Simulations of Epitaxial Recrystallization and Amorphous-to-Crystalline...

  7. Modeling of Diesel Exhaust Systems: A methodology to better simulate...

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

    of Diesel Exhaust Systems: A methodology to better simulate soot reactivity Modeling of Diesel Exhaust Systems: A methodology to better simulate soot reactivity Discussed...

  8. Sandia Energy - Consortium for Advanced Simulation of Light Water...

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

    Consortium for Advanced Simulation of Light Water Reactors (CASL) Home Stationary Power Nuclear Fuel Cycle Advanced Nuclear Energy Consortium for Advanced Simulation of Light Water...

  9. Sandia National Laboratories: simulating solar-power-plant output...

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

    simulating solar-power-plant output variability Sandia PV Team Publishes Book Chapter On January 21, 2014, in Computational Modeling & Simulation, Energy, Modeling & Analysis,...

  10. agent based simulation: Topics by E-print Network

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

    an agent-based model to simulate the diffusion of smart metering technology in the electricity market. We simulate the emergent adoption of smart metering... Zhang, Tao;...

  11. Nonlinear Time Domain Modeling and Simulation of Surface and...

    Office of Environmental Management (EM)

    Nonlinear Time Domain Modeling and Simulation of Surface and Embedded NPPS Nonlinear Time Domain Modeling and Simulation of Surface and Embedded NPPS Nonlinear Time Domain Modeling...

  12. Medium- and Heavy-Duty Electric Drive Vehicle Simulation and...

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

    Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis 2011 DOE Hydrogen and Fuel Cells...

  13. Development of Design and Simulation Tool for Hybrid Geothermal...

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

    Development of Design and Simulation Tool for Hybrid Geothermal Heat Pump System Development of Design and Simulation Tool for Hybrid Geothermal Heat Pump System This project will...

  14. Vehicle Technologies Office: 2013 Vehicle and Systems Simulation...

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

    Vehicle Technologies Office: 2013 Vehicle and Systems Simulation and Testing R&D Annual Progress Report Vehicle Technologies Office: 2013 Vehicle and Systems Simulation and Testing...

  15. Co-simulation of innovative integrated HVAC systems in buildings

    E-Print Network [OSTI]

    Trcka, Marija

    2010-01-01T23:59:59.000Z

    Canada: International Building Perfor- mance SimulationExternal coupling between building energy simulation andexternal coupling of building energy and air ow modeling

  16. Model Simulating Real Domestic Hot Water Use - Building America...

    Energy Savers [EERE]

    Model Simulating Real Domestic Hot Water Use - Building America Top Innovation Model Simulating Real Domestic Hot Water Use - Building America Top Innovation Image of a pipe...

  17. Neutron Powder Diffraction and Molecular Simulation Study of...

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

    Powder Diffraction and Molecular Simulation Study of the Structural Evolution of Ammonia Borane from 15 to 340 K. Neutron Powder Diffraction and Molecular Simulation Study of the...

  18. FUEL ASSEMBLY SHAKER TEST SIMULATION

    SciTech Connect (OSTI)

    Klymyshyn, Nicholas A.; Sanborn, Scott E.; Adkins, Harold E.; Hanson, Brady D.

    2013-05-30T23:59:59.000Z

    This report describes the modeling of a PWR fuel assembly under dynamic shock loading in support of the Sandia National Laboratories (SNL) shaker test campaign. The focus of the test campaign is on evaluating the response of used fuel to shock and vibration loads that a can occur during highway transport. Modeling began in 2012 using an LS-DYNA fuel assembly model that was first created for modeling impact scenarios. SNL’s proposed test scenario was simulated through analysis and the calculated results helped guide the instrumentation and other aspects of the testing. During FY 2013, the fuel assembly model was refined to better represent the test surrogate. Analysis of the proposed loads suggested the frequency band needed to be lowered to attempt to excite the lower natural frequencies of the fuel assembly. Despite SNL’s expansion of lower frequency components in their five shock realizations, pretest predictions suggested a very mild dynamic response to the test loading. After testing was completed, one specific shock case was modeled, using recorded accelerometer data to excite the model. Direct comparison of predicted strain in the cladding was made to the recorded strain gauge data. The magnitude of both sets of strain (calculated and recorded) are very low, compared to the expected yield strength of the Zircaloy-4 material. The model was accurate enough to predict that no yielding of the cladding was expected, but its precision at predicting micro strains is questionable. The SNL test data offers some opportunity for validation of the finite element model, but the specific loading conditions of the testing only excite the fuel assembly to respond in a limited manner. For example, the test accelerations were not strong enough to substantially drive the fuel assembly out of contact with the basket. Under this test scenario, the fuel assembly model does a reasonable job of approximating actual fuel assembly response, a claim that can be verified through direct comparison of model results to recorded test results. This does not offer validation for the fuel assembly model in all conceivable cases, such as high kinetic energy shock cases where the fuel assembly might lift off the basket floor to strike to basket ceiling. This type of nonlinear behavior was not witnessed in testing, so the model does not have test data to be validated against.a basis for validation in cases that substantially alter the fuel assembly response range. This leads to a gap in knowledge that is identified through this modeling study. The SNL shaker testing loaded a surrogate fuel assembly with a certain set of artificially-generated time histories. One thing all the shock cases had in common was an elimination of low frequency components, which reduces the rigid body dynamic response of the system. It is not known if the SNL test cases effectively bound all highway transportation scenarios, or if significantly greater rigid body motion than was tested is credible. This knowledge gap could be filled through modeling the vehicle dynamics of a used fuel conveyance, or by collecting acceleration time history data from an actual conveyance under highway conditions.

  19. The verification of a semi-analytical reservoir simulator using a finite difference reservoir simulator

    E-Print Network [OSTI]

    Dube, Hans Gerhardt

    1990-01-01T23:59:59.000Z

    reduction in CPU time and computer memory, when compared to using finite difference reservoir simulators and mainframe computers, to solve the same problem. Development of Computers The advances that have been made in computing power and the improved...THE VERIFICATION OF A SEMI-ANALYTICAL RESERVOIR SIMULATOR USING A FINITE DIFFERENCE RESERVOIR SIMULATOR A Thesis by HANS GERHARDT DUBE Submitted to the Office of Graduate Studies Texas A&M University in partial fulfillment of the requirements...

  20. Driving Simulator for Head-Up Display Evaluation: Driver's Response Time on Accident Simulation Cases

    E-Print Network [OSTI]

    Charissis, V.; Arafat, S.

    Charissis,V. Arafat,S. Chan,W. Christomanos,C. Driving Simulation Conference, DSC Asia/Pacific 2006, Tsukuba, Tokyo, Japan

  1. Uncertainty and error in computational simulations

    SciTech Connect (OSTI)

    Oberkampf, W.L.; Diegert, K.V.; Alvin, K.F.; Rutherford, B.M.

    1997-10-01T23:59:59.000Z

    The present paper addresses the question: ``What are the general classes of uncertainty and error sources in complex, computational simulations?`` This is the first step of a two step process to develop a general methodology for quantitatively estimating the global modeling and simulation uncertainty in computational modeling and simulation. The second step is to develop a general mathematical procedure for representing, combining and propagating all of the individual sources through the simulation. The authors develop a comprehensive view of the general phases of modeling and simulation. The phases proposed are: conceptual modeling of the physical system, mathematical modeling of the system, discretization of the mathematical model, computer programming of the discrete model, numerical solution of the model, and interpretation of the results. This new view is built upon combining phases recognized in the disciplines of operations research and numerical solution methods for partial differential equations. The characteristics and activities of each of these phases is discussed in general, but examples are given for the fields of computational fluid dynamics and heat transfer. They argue that a clear distinction should be made between uncertainty and error that can arise in each of these phases. The present definitions for uncertainty and error are inadequate and. therefore, they propose comprehensive definitions for these terms. Specific classes of uncertainty and error sources are then defined that can occur in each phase of modeling and simulation. The numerical sources of error considered apply regardless of whether the discretization procedure is based on finite elements, finite volumes, or finite differences. To better explain the broad types of sources of uncertainty and error, and the utility of their categorization, they discuss a coupled-physics example simulation.

  2. Communication Simulations for Power System Applications

    SciTech Connect (OSTI)

    Fuller, Jason C.; Ciraci, Selim; Daily, Jeffrey A.; Fisher, Andrew R.; Hauer, Matthew L.

    2013-05-29T23:59:59.000Z

    New smart grid technologies and concepts, such as dynamic pricing, demand response, dynamic state estimation, and wide area monitoring, protection, and control, are expected to require considerable communication resources. As the cost of retrofit can be high, future power grids will require the integration of high-speed, secure connections with legacy communication systems, while still providing adequate system control and security. While considerable work has been performed to create co-simulators for the power domain with load models and market operations, limited work has been performed in integrating communications directly into a power domain solver. The simulation of communication and power systems will become more important as the two systems become more inter-related. This paper will discuss ongoing work at Pacific Northwest National Laboratory to create a flexible, high-speed power and communication system co-simulator for smart grid applications. The framework for the software will be described, including architecture considerations for modular, high performance computing and large-scale scalability (serialization, load balancing, partitioning, cross-platform support, etc.). The current simulator supports the ns-3 (telecommunications) and GridLAB-D (distribution systems) simulators. Ongoing and future work will be described, including planned future expansions for a traditional transmission solver. A test case using the co-simulator, utilizing a transactive demand response system created for the Olympic Peninsula and AEP gridSMART demonstrations, requiring two-way communication between distributed and centralized market devices, will be used to demonstrate the value and intended purpose of the co-simulation environment.

  3. Theory and Simulation of Multiphase Polymer Systems

    E-Print Network [OSTI]

    Friederike Schmid

    2010-01-08T23:59:59.000Z

    The theory of multiphase polymer systems has a venerable tradition. The 'classical' theory of polymer demixing, the Flory-Huggins theory, was developed already in the forties of the last century. It is still the starting point for most current approaches -- be they improved theories for polymer (im)miscibility that take into account the microscopic structure of blends more accurately, or sophisticated field theories that allow to study inhomogeneous multicomponent systems of polymers with arbitrary architectures in arbitrary geometries. In contrast, simulations of multiphase polymer systems are relatively young. They are still limited by the fact that one must simulate a large number of large molecules in order to obtain meaningful results. Both powerful computers and smart modeling and simulation approaches are necessary to overcome this problem. This article gives an overview over the state-of-the art in both areas, theory and simulation. While the theory has reached a fairly mature stage by now, and many aspects of it are covered in textbooks on polymer physics, the information on simulations is much more scattered. This is why some effort has been invested into putting together a representative list of references in this area (up to the year of 2008) -- which is of course still far from complete.

  4. A NEW GENERATION CHEMICAL FLOODING SIMULATOR

    SciTech Connect (OSTI)

    Gary A. Pope; Kamy Sepehrnoori; Mojdeh Delshad

    2003-04-01T23:59:59.000Z

    The premise of this research is that a general-purpose reservoir simulator for several improved oil recovery processes can and should be developed so that high-resolution simulations of a variety of very large and difficult problems can be achieved using state-of-the-art algorithms and computers. Such a simulator is not currently available to the industry. The goal of this proposed research is to develop a new-generation chemical flooding simulator that is capable of efficiently and accurately simulating oil reservoirs with at least a million gridblocks in less than one day on massively parallel computers. Task 1 is the formulation and development of solution scheme, Task 2 is the implementation of the chemical module, and Task 3 is validation and application. We have made significant progress on all three tasks and we are on schedule on both technical and budget. In this report, we will detail our progress on Tasks 1 through 3 for the first six months of the second year of the project.

  5. Development and Characterization of Boehmite Component Simulant

    SciTech Connect (OSTI)

    Russell, Renee L.; Peterson, Reid A.; Smith, Harry D.; Rinehart, Donald E.; Aker, Pamela M.; Buck, Edgar C.

    2009-06-03T23:59:59.000Z

    According to Bechtel National Inc.’s (BNI’s) Test Specification 24590-PTF-TSP-RT-06-006, Rev 0, “Simulant Development to Support the Development and Demonstration of Leaching and Ultrafiltration Pretreatment Processes,” simulants for boehmite, gibbsite, and filtration are to be developed that can be used in subsequent bench and integrated testing of the leaching/filtration processes. These simulants will then be used to demonstrate the leaching process and to help refine processing conditions that may impact safety basis considerations (Smith 2006). This report documents the results of the boehmite simulant development and blended simulant crossflow ultrafiltration leaching completed in accordance with the test plan TP-RPP-WTP-469 Rev 0 (WTP Doc. No. 24590- 101-TSA-W000-0004-182-00001 Rev 00A) prepared and approved in response to the cited test specification. This report also includes the results of the aluminate and anion effect on boehmite dissolution performed in accordance with the test plan TP-RPP-WTP-509, Rev 0 (WTP Doc. No. 24590-101-TSA-W000-0004-72-00019 Rev 00A) prepared and approved in response to the Test Specification 24590-WTP-TSP-RT-07-004, Rev 0 (Sundar 2007).

  6. AI-Based Simulation: An Alternative to Numerical Simulation and Modeling

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    : Numerical Modeling, Simulation, Artificial Intelligence, Data Min- ing, Reservoir Modeling, Reservoir data for brown fields. The run-time of AI-Based reservoir models that provide complete field responses Computational Fluid Dynamics (CFD) to Numer- ical Reservoir Simulation (NRS) most of the computational modeling

  7. DCLOSSP3.DOC ADAPTATION OF "SPICE3'' TO SIMULATION OF

    E-Print Network [OSTI]

    Palusinski, Olgierd A.

    DCLOSSP3.DOC ADAPTATION OF "SPICE3'' TO SIMULATION OF LOSSY MULTIPLE-COUPLED TRANSMISSION LINES simulation of transients in networks that include multiple, coupled lossy transmission lines. Widely used circuit simulator, SPICE, does not have facilities for simulation of multi-conductor transmission lines

  8. ADAPTABLE SIMULATION MODELS FOR MANUFACTURING Jeffrey W. Herrmann1

    E-Print Network [OSTI]

    Herrmann, Jeffrey W.

    . Because building a simulation model can be a difficult and time-consuming task, it will be useful in manufacturing. Formulating the problem, building the simulation model, running the model, and analyzing the output are the basic steps in a simulation study. Because building a simulation model can be a difficult

  9. CS 661: System Simulation Spring Semester at NJIT

    E-Print Network [OSTI]

    Lin, Xiaodong

    are to learn how to plan, build and use simulation models and to develop an understanding of when simulation and software tools for building simulation models, performing experiments with them, and interpretingCS 661: System Simulation Spring Semester at NJIT Tuesday Evenings, 6:00 - 9:05pm Instructor Prof

  10. CS 661: System Simulation Spring Semester at NJIT

    E-Print Network [OSTI]

    Nakayama, Marvin K.

    are to learn how to plan, build and use simulation models and to develop an understanding of when simulation tools for building simulation models, performing experiments with them, and interpreting the resultsCS 661: System Simulation Spring Semester at NJIT Thursdays, 2:30 ­ 5:25pm Instructor Prof. Marvin

  11. Ice-Floe Simulation Viewer Tool Justin Adams

    E-Print Network [OSTI]

    Peters, Dennis

    Ice-Floe Simulation Viewer Tool Justin Adams Computer Engineering Memorial University St. John's, Newfoundland dpeters@mun.ca Abstract--We are developing software to simulate the be- haviour of sea ice the ability to set up the initial conditions, run the simulation, and display the simulated ice- floe data

  12. Student Choices when Learning with Computer Simulations Noah S. Podolefsky*

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    Student Choices when Learning with Computer Simulations Noah S. Podolefsky* , Wendy K. Adams Abstract. We examine student choices while using PhET computer simulations (sims) to learn physics content simulations. The PhET project is one such learning tool, a suite of over 80 computer simulations of science

  13. Applications of Ontologies for Assembling Simulation Models of Industrial Systems

    E-Print Network [OSTI]

    -automated semantic engine that assembles the simulation model. We represent a structure of a real industrial plant in a plant ontology and available simulation blocks in a simulation ontology. Signals of each simulation critical scenarios of nuclear power plants [9]. As some real experiments cannot be repeated under the same

  14. Terascale High-Fidelity Simulations of Turbulent Combustion with Detailed Chemistry: Spray Simulations

    SciTech Connect (OSTI)

    Rutland, Christopher J.

    2009-04-26T23:59:59.000Z

    The Terascale High-Fidelity Simulations of Turbulent Combustion (TSTC) project is a multi-university collaborative effort to develop a high-fidelity turbulent reacting flow simulation capability utilizing terascale, massively parallel computer technology. The main paradigm of the approach is direct numerical simulation (DNS) featuring the highest temporal and spatial accuracy, allowing quantitative observations of the fine-scale physics found in turbulent reacting flows as well as providing a useful tool for development of sub-models needed in device-level simulations. Under this component of the TSTC program the simulation code named S3D, developed and shared with coworkers at Sandia National Laboratories, has been enhanced with new numerical algorithms and physical models to provide predictive capabilities for turbulent liquid fuel spray dynamics. Major accomplishments include improved fundamental understanding of mixing and auto-ignition in multi-phase turbulent reactant mixtures and turbulent fuel injection spray jets.

  15. Simulation of partial entanglement with nonsignaling resources

    E-Print Network [OSTI]

    Nicolas Brunner; Nicolas Gisin; Sandu Popescu; Valerio Scarani

    2008-11-14T23:59:59.000Z

    With the goal of gaining a deeper understanding of quantum non-locality, we decompose quantum correlations into more elementary non-local correlations. We show that the correlations of all pure entangled states of two qubits can be simulated without communication, hence using only non-signaling resources. Our simulation model works in two steps. First, we decompose the quantum correlations into a local and a non-local part. Second, we present a model for simulating the nonlocal part using only non-signaling resources. In our model partially entangled states require more nonlocal resources than maximally entangled states, but the less the state is entangled, the less frequently must the nonlocal resources be used.

  16. LHC RF System Time-Domain Simulation

    SciTech Connect (OSTI)

    Mastorides, T.; Rivetta, C.; /SLAC

    2010-09-14T23:59:59.000Z

    Non-linear time-domain simulations have been developed for the Positron-Electron Project (PEP-II) and the Large Hadron Collider (LHC). These simulations capture the dynamic behavior of the RF station-beam interaction and are structured to reproduce the technical characteristics of the system (noise contributions, non-linear elements, and more). As such, they provide useful results and insight for the development and design of future LLRF feedback systems. They are also a valuable tool for the study of diverse longitudinal beam dynamics effects such as coupled-bunch impedance driven instabilities and single bunch longitudinal emittance growth. Results from these studies and related measurements from PEP-II and LHC have been presented in multiple places. This report presents an example of the time-domain simulation implementation for the LHC.

  17. SLUDGE BATCH 5 SIMULANT FLOWSHEET STUDIES

    SciTech Connect (OSTI)

    Lambert, D; Michael Stone, M; Bradley Pickenheim, B; David Best, D; David Koopman, D

    2008-10-03T23:59:59.000Z

    The Defense Waste Processing Facility (DWPF) will transition from Sludge Batch 4 (SB4) processing to Sludge Batch 5 (SB5) processing in early fiscal year 2009. Tests were conducted using non-radioactive simulants of the expected SB5 composition to determine the impact of varying the acid stoichiometry during the Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator (SME) processes. The work was conducted to meet the Technical Task Request (TTR) HLW/DWPF/TTR-2007-0007, Rev. 1 and followed the guidelines of a Task Technical and Quality Assurance Plan (TT&QAP). The flowsheet studies are performed to evaluate the potential chemical processing issues, hydrogen generation rates, and process slurry rheological properties as a function of acid stoichiometry. Initial SB5 flowsheet studies were conducted to guide decisions during the sludge batch preparation process. These studies were conducted with the estimated SB5 composition at the time of the study. The composition has changed slightly since these studies were completed due to changes in the washing plan to prepare SB5 and the estimated SB4 heel mass. Nine DWPF process simulations were completed in 4-L laboratory-scale equipment using both a batch simulant (Tank 51 simulant after washing is complete) and a blend simulant (Tank 40 simulant after Tank 51 transfer is complete). Each simulant had a set of four SRAT and SME simulations at varying acid stoichiometry levels (115%, 130%, 145% and 160%). One additional run was made using blend simulant at 130% acid that included additions of the Actinide Removal Process (ARP) waste prior to acid addition and the Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU) waste following SRAT dewatering. There are several parameters that are noteworthy concerning SB5 sludge: (1) This is the first batch DWPF will be processing that contains sludge that has had a significant fraction of aluminum removed through aluminum dissolution. (2) The sludge is high in mercury. (3) The sludge is high in noble metals. (4) The sludge is high in U and Pu--components that are not added in sludge simulants. Two SB5 processing issues were noted during testing. First, high hydrogen generation rates were measured during experiments with both the blend and batch simulant at high acid stoichiometry. Also, the reflux time was extended due to the high mercury concentration in both the batch and blend simulant. Adding ARP will extend processing times in DWPF. The ARP caustic boil took approximately six hours. The boiling time during the experiment with added MCU was 14 hours at the maximum DWPF steam flux rate. This is comparable to the DWPF processing time for dewatering plus reflux without MCU at a 5000 lbs/hr boil-up rate, but would require significantly more time at boiling at 2000-2500 lbs/hr boil-up rate. The addition of ARP and MCU did not cause any other processing issues, since foaming, rheology and hydrogen generation were less of an issue while processing with ARP/MCU.

  18. Dynamic procedure for filtered gyrokinetic simulations

    SciTech Connect (OSTI)

    Morel, P.; Banon Navarro, A.; Albrecht-Marc, M.; Carati, D. [Statistical and Plasma Physics Laboratory, Universite Libre de Bruxelles, Bruxelles 1050 (Belgium); Merz, F.; Goerler, T.; Jenko, F. [Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, D-85748 Garching (Germany)

    2012-01-15T23:59:59.000Z

    Large eddy simulations (LES) of gyrokinetic plasma turbulence are investigated as interesting candidates to decrease the computational cost. A dynamic procedure is implemented in the gene code, allowing for dynamic optimization of the free parameters of the LES models (setting the amplitudes of dissipative terms). Employing such LES methods, one recovers the free energy and heat flux spectra obtained from highly resolved direct numerical simulations. Systematic comparisons are performed for different values of the temperature gradient and magnetic shear, parameters which are of prime importance in ion temperature gradient driven turbulence. Moreover, the degree of anisotropy of the problem, which can vary with parameters, can be adapted dynamically by the method that shows gyrokinetic large eddy simulation to be a serious candidate to reduce numerical cost of gyrokinetic solvers.

  19. SERI DOE-2 solar simulator study

    SciTech Connect (OSTI)

    Eden, A.; Simms, D.A.

    1980-01-01T23:59:59.000Z

    The Solar Energy Research Institute's (SERI) analysis of the solar energy simulator section of DOE-2, a public domain computer program that allows users to explore the energy-use patterns of proposed and existing buildings and their heating, ventilating, and air conditioning (HVAC) systems is discussed. This computer program contains a solar energy simulation portion called Component-Based Simulator (CBS) incorporated into the HVAC Plant (large equipment) section. SERI is investigating the adequacy and sensitivity of DOE-2's solar portion when various active solar energy systems and combinations of solar components are interfaced with standard space conditioning systems or used in a stand-alone mode. The components have been assembled into typical configurations and parametric test runs have been performed examining the problems associated with the program and the characteristics of the output for eventual comparison with other energy analysis computer programs.

  20. Metropolitan Road Traffic Simulation on FPGAs.

    SciTech Connect (OSTI)

    Tripp J. L. (Justin L.); Mortveit, H. S. (Henning S.); Hansson, A. A. (Anders A.); Gokhale, M. (Maya)

    2005-01-01T23:59:59.000Z

    This work demonstrates that road traffic simulation of entire metropolitan areas is possible with reconfigurable supercomputing that combines 64-bit microprocessors and FPGAs in a high bandwidth, low latency interconnect. Previously, traffic simulation on FPGAs was limited to very short road segments or required a very large number of FPGAs. Our data streaming approach overcomes scaling issues associated with direct implementations and still allows for high-level parallelism by dividing the data sets between hardware and software across the reconfigurable supercomputer. Using one FPGA on the Cray XD1 supercomputer, we are able to achieve a 34.4 x speed up over the AMD microprocessor. System integration issues must be optimized to exploit this speedup in the overall simulation.

  1. Multi-physics microstructural simulation of sintering.

    SciTech Connect (OSTI)

    Tikare, Veena

    2010-06-01T23:59:59.000Z

    Simulating the detailed evolution of microstructure at the mesoscale is increasingly being addressed by a number of methods. Discrete element modeling and Potts kinetic Monte Carlo have achieved success in capturing different aspects of sintering well. Discrete element cannot treat the details of neck formation and other shape evolution, especially when considering particles of arbitrary shapes. Potts kMC treats the micorstructural evolution very well, but cannot incorporate complex stress states that form especially during differential sintering. A model that is capable of simulating microstructural evolution during sintering at the mesoscale and can incorporate differential stresses is being developed. This multi-physics model that can treat both interfacial energies and the inter-particle stresses will be introduced. It will be applied to simulate microstructural evolution while resolving individual particles and the stresses that develop between them due to local shrinkage. Results will be presented and the future development of this model will be discussed.

  2. Argonne simulation framework for intelligent transportation systems

    SciTech Connect (OSTI)

    Ewing, T.; Doss, E.; Hanebutte, U.; Canfield, T.; Brown-VanHoozer, A.; Tentner, A.

    1996-04-01T23:59:59.000Z

    A simulation framework has been developed which defines a high-level architecture for a large-scale, comprehensive, scalable simulation of an Intelligent Transportation System (ITS). The simulator is designed to run on parallel computers and distributed (networked) computer systems; however, a version for a stand alone workstation is also available. The ITS simulator includes an Expert Driver Model (EDM) of instrumented ``smart`` vehicles with in-vehicle navigation units. The EDM is capable of performing optimal route planning and communicating with Traffic Management Centers (TMC). A dynamic road map data base is sued for optimum route planning, where the data is updated periodically to reflect any changes in road or weather conditions. The TMC has probe vehicle tracking capabilities (display position and attributes of instrumented vehicles), and can provide 2-way interaction with traffic to provide advisories and link times. Both the in-vehicle navigation module and the TMC feature detailed graphical user interfaces that includes human-factors studies to support safety and operational research. Realistic modeling of variations of the posted driving speed are based on human factor studies that take into consideration weather, road conditions, driver`s personality and behavior and vehicle type. The simulator has been developed on a distributed system of networked UNIX computers, but is designed to run on ANL`s IBM SP-X parallel computer system for large scale problems. A novel feature of the developed simulator is that vehicles will be represented by autonomous computer processes, each with a behavior model which performs independent route selection and reacts to external traffic events much like real vehicles. Vehicle processes interact with each other and with ITS components by exchanging messages. With this approach, one will be able to take advantage of emerging massively parallel processor (MPP) systems.

  3. Xyce parallel electronic simulator : users' guide.

    SciTech Connect (OSTI)

    Mei, Ting; Rankin, Eric Lamont; Thornquist, Heidi K.; Santarelli, Keith R.; Fixel, Deborah A.; Coffey, Todd Stirling; Russo, Thomas V.; Schiek, Richard Louis; Warrender, Christina E.; Keiter, Eric Richard; Pawlowski, Roger Patrick

    2011-05-01T23:59:59.000Z

    This manual describes the use of the Xyce Parallel Electronic Simulator. Xyce has been designed as a SPICE-compatible, high-performance analog circuit simulator, and has been written to support the simulation needs of the Sandia National Laboratories electrical designers. This development has focused on improving capability over the current state-of-the-art in the following areas: (1) Capability to solve extremely large circuit problems by supporting large-scale parallel computing platforms (up to thousands of processors). Note that this includes support for most popular parallel and serial computers; (2) Improved performance for all numerical kernels (e.g., time integrator, nonlinear and linear solvers) through state-of-the-art algorithms and novel techniques. (3) Device models which are specifically tailored to meet Sandia's needs, including some radiation-aware devices (for Sandia users only); and (4) Object-oriented code design and implementation using modern coding practices that ensure that the Xyce Parallel Electronic Simulator will be maintainable and extensible far into the future. Xyce is a parallel code in the most general sense of the phrase - a message passing parallel implementation - which allows it to run efficiently on the widest possible number of computing platforms. These include serial, shared-memory and distributed-memory parallel as well as heterogeneous platforms. Careful attention has been paid to the specific nature of circuit-simulation problems to ensure that optimal parallel efficiency is achieved as the number of processors grows. The development of Xyce provides a platform for computational research and development aimed specifically at the needs of the Laboratory. With Xyce, Sandia has an 'in-house' capability with which both new electrical (e.g., device model development) and algorithmic (e.g., faster time-integration methods, parallel solver algorithms) research and development can be performed. As a result, Xyce is a unique electrical simulation capability, designed to meet the unique needs of the laboratory.

  4. Issues in Numerical Simulation of Fire Suppression

    SciTech Connect (OSTI)

    Tieszen, S.R.; Lopez, A.R.

    1999-04-12T23:59:59.000Z

    This paper outlines general physical and computational issues associated with performing numerical simulation of fire suppression. Fire suppression encompasses a broad range of chemistry and physics over a large range of time and length scales. The authors discuss the dominant physical/chemical processes important to fire suppression that must be captured by a fire suppression model to be of engineering usefulness. First-principles solutions are not possible due to computational limitations, even with the new generation of tera-flop computers. A basic strategy combining computational fluid dynamics (CFD) simulation techniques with sub-grid model approximations for processes that have length scales unresolvable by gridding is presented.

  5. Harvesting graphics power for MD simulations

    E-Print Network [OSTI]

    J. A. van Meel; A. Arnold; D. Frenkel; S. F. Portegies Zwart; R. G. Belleman

    2007-09-20T23:59:59.000Z

    We discuss an implementation of molecular dynamics (MD) simulations on a graphic processing unit (GPU) in the NVIDIA CUDA language. We tested our code on a modern GPU, the NVIDIA GeForce 8800 GTX. Results for two MD algorithms suitable for short-ranged and long-ranged interactions, and a congruential shift random number generator are presented. The performance of the GPU's is compared to their main processor counterpart. We achieve speedups of up to 80, 40 and 150 fold, respectively. With newest generation of GPU's one can run standard MD simulations at 10^7 flops/$.

  6. Atomistic Simulation of Slow Grain Boundary Motion

    SciTech Connect (OSTI)

    Deng Chuang; Schuh, Christopher A. [Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139 (United States)

    2011-01-28T23:59:59.000Z

    Existing atomistic simulation techniques to study grain boundary motion are usually limited to either high velocities or temperatures and are difficult to compare to realistic experimental conditions. Here we introduce an adapted simulation method that can access boundary velocities in the experimental range and extract mobilities in the zero driving force limit at temperatures as low as {approx}0.2T{sub m} (T{sub m} is the melting point). The method reveals three mechanistic regimes of boundary mobility at zero net velocity depending on the system temperature.

  7. Train derailment and railroad barrier interaction simulation

    E-Print Network [OSTI]

    Zhang, Heping

    1990-01-01T23:59:59.000Z

    ; and (4) impact force between cars. The properties of these forces are discussed below: 11 1. Coupling force and coupling moment a) Coupling force: Figure 3. 4 shows the force-displacement relation which was used in the simulation for coupler action... or eliminate the risk of the passenger track intrusion by derailing cars on adjacent track is of concern to the railroad authorities. The purpose of this study is through computer simulation to investigate the behavior of the train derailment and to determine...

  8. Simulated progress in double-beta decay

    SciTech Connect (OSTI)

    Miley, H.S.; Arthur, R.J. [Pacific Northwest Lab., Richland, WA (United States); Avignone, F.T. [South Carolina Univ., Columbia, SC (United States)] [and others

    1993-09-01T23:59:59.000Z

    A Monte Carlo code has been developed to accurately simulate double-beta decay measurements. Coincident gamma rays, beta spectra, and angular correlations have been added to adequately simulate a complete {sup 100}Mo nuclear decay and provide corrections to experimentally determined detector efficiencies. This code has been used to strip certain low-background spectra obtained in the Homestake gold mine in Lead, SD, for the purpose of extremely sensitive materials assay for the construction of new, large, enriched germanium detectors. Assays as low as 9 {mu}Bq/g of {sup 210}Pb in lead shielding were obtained.

  9. Monte Carlo simulations on Graphics Processing Units

    E-Print Network [OSTI]

    Vadim Demchik; Alexei Strelchenko

    2009-03-30T23:59:59.000Z

    Implementation of basic local Monte-Carlo algorithms on ATI Graphics Processing Units (GPU) is investigated. The Ising model and pure SU(2) gluodynamics simulations are realized with the Compute Abstraction Layer (CAL) of ATI Stream environment using the Metropolis and the heat-bath algorithms, respectively. We present an analysis of both CAL programming model and the efficiency of the corresponding simulation algorithms on GPU. In particular, the significant performance speed-up of these algorithms in comparison with serial execution is observed.

  10. Lattice gas simulations of replicating domains

    SciTech Connect (OSTI)

    Dawson, S.P.; Hasslacher, B.; Pearson, J.E.

    1993-12-31T23:59:59.000Z

    We use the lattice gas cellular automation (LGCA) developed to simulate a process of pattern-formation recently observed in reaction-diffusion systems. We study the reaction mechanism, which is an extension of the Selkov model for glycolytic oscillations. We are able to reproduce the self-replicating domains observed in this work. We use the LGCA simulation to estimate the smallest length-scale on which this process can occur under conditions encountered in the cell. These estimates are similar to those obtained for Turing patterns in the same setting.

  11. Reduced Basis Method for Nanodevices Simulation

    SciTech Connect (OSTI)

    Pau, George Shu Heng

    2008-05-23T23:59:59.000Z

    Ballistic transport simulation in nanodevices, which involves self-consistently solving a coupled Schrodinger-Poisson system of equations, is usually computationally intensive. Here, we propose coupling the reduced basis method with the subband decomposition method to improve the overall efficiency of the simulation. By exploiting a posteriori error estimation procedure and greedy sampling algorithm, we are able to design an algorithm where the computational cost is reduced significantly. In addition, the computational cost only grows marginally with the number of grid points in the confined direction.

  12. Nonlinear simulations to optimize magnetic nanoparticle hyperthermia

    SciTech Connect (OSTI)

    Reeves, Daniel B., E-mail: dbr@Dartmouth.edu; Weaver, John B. [Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755 (United States)

    2014-03-10T23:59:59.000Z

    Magnetic nanoparticle hyperthermia is an attractive emerging cancer treatment, but the acting microscopic energy deposition mechanisms are not well understood and optimization suffers. We describe several approximate forms for the characteristic time of Néel rotations with varying properties and external influences. We then present stochastic simulations that show agreement between the approximate expressions and the micromagnetic model. The simulations show nonlinear imaginary responses and associated relaxational hysteresis due to the field and frequency dependencies of the magnetization. This suggests that efficient heating is possible by matching fields to particles instead of resorting to maximizing the power of the applied magnetic fields.

  13. Process simulation of aluminum reduction cells

    SciTech Connect (OSTI)

    Tabsh, I. [CompuSIM Inc., Calgary, Alberta (Canada); Dupuis, M. [GeniSim, Jonquiere, Quebec (Canada); Gomes, A. [Alcan Aluminio do Brasil S.A., Salvador, Bahia (Brazil)

    1996-10-01T23:59:59.000Z

    A program was developed to model the dynamic behavior of an aluminum reduction cell. The program simulates the physical process by solving the heat and mass balance equations that characterize the behavior of eleven chemical species in the system. It also models operational events (such as metal tapping, anode change, etc.) and the process control logic including various alumina feeding policies and anode effect quenching. The program is a PC based Windows{reg_sign} application that takes full advantage of the Windows user interface. This paper describes the implementation of the process model and the control logic. Various results using the simulation are compared to measured data.

  14. 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.

  15. Nuclear Power - System Simulations and Operation 

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    A&M University United States of America 1 Simulation and Simulators for Nuclear Power Generation J a n o s Sebe s ty e n Janos y MTA KFKI Atomic Energy Research Institute Hungary 1. Introduction T h i s chapte r deals with simula... t i o n , a very po werfu l tool in designi n g , constru c t i n g and operat i n g nuclea r power genera t i n g facili ti es . There are very differ e n t types of power plants , and the exampl e s mentio n e d in this chapte r or igin a t e from...

  16. Type Ia Supernovae: Simulations and Nucleosynthesis

    E-Print Network [OSTI]

    E. F. Brown; A. C. Calder; T. Plewa; P. M. Ricker; K. Robinson; J. B. Gallagher

    2005-05-19T23:59:59.000Z

    We present our first nucleosynthesis results from a numerical simulation of the thermonuclear disruption of a static cold Chandrasekhar-mass C/O white dwarf. The two-dimensional simulation was performed with an adaptive-mesh Eulerian hydrodynamics code, FLASH, that uses as a flame capturing scheme the evolution of a passive scaler. To compute the isotopic yields and their velocity distribution, 10,000 massless tracer particles are embedded in the star. The particles are advected along streamlines and provide a Lagrangian description of the explosion. We briefly describe our verification tests and preliminary results from post-processing the particle trajectories with a modest (214 isotopes) reaction network.

  17. Expansion effects on solar wind hybrid simulations

    SciTech Connect (OSTI)

    Parashar, Tulasi N.; Velli, Marco; Goldstein, Bruce E. [NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)

    2013-06-13T23:59:59.000Z

    Ion kinetic simulations of the solar wind using hybrid codes can model local wave input, heating and instabilities, but generally do not include long term evolution effects in the expanding solar wind. We further develop the expanding box model used in earlier studies to include the mirror force effects and study their role in the evolution of the proton distribution functions in the outer corona and inner heliosphere. The mirror force, significant in the acceleration region of the solar wind, is required for consistency with the conservation of magnetic moment of particles in the expanding wind. We present preliminary results from the modified 1D expanding box hybrid (EBHM) simulations.

  18. Uncalibrated Building Energy Simulation Modeling Results

    E-Print Network [OSTI]

    Ahmad, M.; Culp, C.H.

    for the Level 1 and Level 2 models with measured data for WERC (2004 post-commissioning data). ESL-PA-06-10-01 VOLUME 12, NUMBER 4, OCTOBER 2006 1151 Figure 6. Comparison of simulated daily total energy consumption for the Level 1 and Level 2 models with 1999...,450 m2]), the simulation using 1999 data underestimates the energy use in all categories except the whole building electrical usage. Table 3 identifies the magnitude of these discrepancies for a full year’s consumption. The Level 1 model actually per...

  19. A visual simulation playground for engineering dynamics

    E-Print Network [OSTI]

    Fong, Donald Brian

    2008-10-10T23:59:59.000Z

    A VISUAL SIMULATION PLAYGROUND FOR ENGINEERING DYNAMICS A Thesis by DONALD BRIAN FONG Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements for the degree of MASTER OF SCIENCE August 2008 Major... Subject: Visualization Sciences A VISUAL SIMULATION PLAYGROUND FOR ENGINEERING DYNAMICS A Thesis by DONALD BRIAN FONG Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements for the degree of MASTER...

  20. Xyce parallel electronic simulator release notes.

    SciTech Connect (OSTI)

    Keiter, Eric Richard; Hoekstra, Robert John; Mei, Ting; Russo, Thomas V.; Schiek, Richard Louis; Thornquist, Heidi K.; Rankin, Eric Lamont; Coffey, Todd Stirling; Pawlowski, Roger Patrick; Santarelli, Keith R.

    2010-05-01T23:59:59.000Z

    The Xyce Parallel Electronic Simulator has been written to support, in a rigorous manner, the simulation needs of the Sandia National Laboratories electrical designers. Specific requirements include, among others, the ability to solve extremely large circuit problems by supporting large-scale parallel computing platforms, improved numerical performance and object-oriented code design and implementation. The Xyce release notes describe: Hardware and software requirements New features and enhancements Any defects fixed since the last release Current known defects and defect workarounds For up-to-date information not available at the time these notes were produced, please visit the Xyce web page at http://www.cs.sandia.gov/xyce.

  1. 146 Int. J. Simulation and Process Modelling, Vol. 5, No. 2, 2009 Real-time network simulation support for scalable

    E-Print Network [OSTI]

    Rangaswami, Raju

    network routing protocols can be categorised as analytical, simulation-based, and emulation-based. Here we146 Int. J. Simulation and Process Modelling, Vol. 5, No. 2, 2009 Real-time network simulation integrates the open-source XORP router implementation with a real-time large-scale network simulation engine

  2. Social Game for Building Energy Efficiency: Utility Learning, Simulation, and Analysis

    E-Print Network [OSTI]

    Konstantakopoulos, Ioannis C; Ratliff, Lillian J; Jin, Ming; Sastry, S. Shankar; Spanos, Costas J

    2014-01-01T23:59:59.000Z

    Efficiency: Utility Learning, Simulation, and Analysisthe utility learning problem as well as simulation of the

  3. Maui Electrical System Simulation Model Validation

    E-Print Network [OSTI]

    Maui Electrical System Simulation Model Validation Prepared for the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability Under Award No. DE-FC-06NT42847 Task 9 Deliverable ­ Baseline Model Validation By GE Global Research Niskayuna, New York And University of Hawaii Hawaii Natural

  4. Interactive physically-based cloud simulation

    E-Print Network [OSTI]

    Overby, Derek Robert

    2002-01-01T23:59:59.000Z

    of digital artistic media. Previous methods for modeling the growth of clouds do not account for the fluid interactions that are responsible for cloud formation in the physical atmosphere. We propose a model for simulating cloud formation based on a basic...

  5. Activation Energies from Transition Path Sampling Simulations

    E-Print Network [OSTI]

    Dellago, Christoph

    unavailable for processes occurring in complex systems. Since in this method activation energies diatomic immersed in a bath of repulsive soft particles. Keywords: Activation energy; Computer simulation on the transition path sampling methodology, our approach to determine activation energies does not require full

  6. Lattice Boltzmann simulations of soft matter systems

    E-Print Network [OSTI]

    Burkhard Duenweg; Anthony J. C. Ladd

    2008-06-09T23:59:59.000Z

    This article concerns numerical simulations of the dynamics of particles immersed in a continuum solvent. As prototypical systems, we consider colloidal dispersions of spherical particles and solutions of uncharged polymers. After a brief explanation of the concept of hydrodynamic interactions, we give a general overview over the various simulation methods that have been developed to cope with the resulting computational problems. We then focus on the approach we have developed, which couples a system of particles to a lattice Boltzmann model representing the solvent degrees of freedom. The standard D3Q19 lattice Boltzmann model is derived and explained in depth, followed by a detailed discussion of complementary methods for the coupling of solvent and solute. Colloidal dispersions are best described in terms of extended particles with appropriate boundary conditions at the surfaces, while particles with internal degrees of freedom are easier to simulate as an arrangement of mass points with frictional coupling to the solvent. In both cases, particular care has been taken to simulate thermal fluctuations in a consistent way. The usefulness of this methodology is illustrated by studies from our own research, where the dynamics of colloidal and polymeric systems has been investigated in both equilibrium and nonequilibrium situations.

  7. Center for Advanced Modeling and Simulation Intern

    SciTech Connect (OSTI)

    Gertman, Vanessa

    2010-01-01T23:59:59.000Z

    Some interns just copy papers and seal envelopes. Not at INL! Check out how Vanessa Gertman, an INL intern working at the Center for Advanced Modeling and Simulation, spent her summer working with some intense visualization software. Lots more content like this is available at INL's facebook page http://www.facebook.com/idahonationallaboratory.

  8. Multiphysics Object-Oriented Simulation Environment (MOOSE)

    ScienceCinema (OSTI)

    None

    2013-05-28T23:59:59.000Z

    Nuclear reactor operators can expand safety margins with more precise information about how materials behave inside operating reactors. INL's new simulation platform makes such studies easier & more informative by letting researchers "plug-n-play" their mathematical models, skipping years of computer code development.

  9. EXPERIMENTAL SIMULATION OF DISTILLATION COLUMN PROFILE MAPS

    E-Print Network [OSTI]

    Skogestad, Sigurd

    EXPERIMENTAL SIMULATION OF DISTILLATION COLUMN PROFILE MAPS Tshepo Sehole David Modise A thesis or in combination, such as distillation, extraction, crystallization, ect. Among these, distillation is by far profiles for the preliminary design of distillation columns. Residue curves and column profile are not only

  10. Threedimensional numerical simulation for various geometries

    E-Print Network [OSTI]

    Herbin, Raphaèle

    modelling and numerical simulation of natural gas­fed solid oxide cells (Solid Oxide Fuel Cell, SOFC) at a stationary regime. The principle of a Solid Oxide Fuel Cell (SOFC) is based on the conversion of the chemical is taken into account in the present model. The SOFC systems seem to be of great interest for use

  11. Sliding Interfaces for Eddy Current Simulations

    E-Print Network [OSTI]

    Hiptmair, Ralf

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

  12. Simulations of Particle Dynamics in Magnetorheological Fluids

    E-Print Network [OSTI]

    . Reitich 2 , M.R. Jolly 3 , H.T. Banks 1 , Kazi Ito 1 Abstract We present particle dynamics simulations transformed from a liquid state to that of a Bingham solid upon application of a magnetic (resp., electric as these present a number of advantages over their electric counterparts. These include higher achievable yield

  13. Retained Gas Sampler Calibration and Simulant Tests

    SciTech Connect (OSTI)

    CRAWFORD, B.A.

    2000-01-05T23:59:59.000Z

    This test plan provides a method for calibration of the retained gas sampler (RGS) for ammonia gas analysis. Simulant solutions of ammonium hydroxide at known concentrations will be diluted with isotopically labeled 0.04 M ammonium hydroxide solution. Sea sand solids will also be mixed with ammonium hydroxide solution and diluent to determine the accuracy of the system for ammonia gas analysis.

  14. Simulation of Top Oil Temperature for Transformers

    E-Print Network [OSTI]

    Simulation of Top Oil Temperature for Transformers Masters Thesis and Final Project Report Power-Oil Temperature for Transformers Thesis and Final Report Yong Liang PSERC Publication 01-21 February 2001 #12 for the PSERC project "On-Line Peak Loading of Substation Distribution Transformers Through Accurate Temperature

  15. HEADLAND TURNING CONTROL METHOD SIMULATION OF AUTONOMOUS

    E-Print Network [OSTI]

    Nagasaka et al., 2004). This method could minimize the headland space but makes steering controlHEADLAND TURNING CONTROL METHOD SIMULATION OF AUTONOMOUS AGRICULTRUAL MACHINE BASED ON IMPROVED PURE PURSUIT MODEL Peichen Huang1 , Xiwen Luo 2,* , Zhigang Zhang 3 Key Laboratory of Key Technology

  16. Translating Model Simulators to Analysis Models

    E-Print Network [OSTI]

    de Lara, Juan

    Translating Model Simulators to Analysis Models Juan de Lara1 and Hans Vangheluwe2 1 Polytechnic generation of model-to-model transformations given a description of the operational semantics of the source of operational triple graph grammar rules that transform the static information (initial model) and the dynamics

  17. A Hierarchical Evaluation of Regional Climate Simulations

    SciTech Connect (OSTI)

    Leung, Lai-Yung R.; Ringler, Todd; Collins, William D.; Taylor, Mark; Ashfaq, Moetasim

    2013-08-20T23:59:59.000Z

    Global climate models (GCMs) are the primary tools for predicting the evolution of the climate system. Through decades of development, GCMs have demonstrated useful skill in simulating climate at continental to global scales. However, large uncertainties remain in projecting climate change at regional scales, which limit our ability to inform decisions on climate change adaptation and mitigation. To bridge this gap, different modeling approaches including nested regional climate models (RCMs), global stretch-grid models, and global high-resolution atmospheric models have been used to provide regional climate simulations (Leung et al. 2003). In previous efforts to evaluate these approaches, isolating their relative merits was not possible because factors such as dynamical frameworks, physics parameterizations, and model resolutions were not systematically constrained. With advances in high performance computing, it is now feasible to run coupled atmosphere-ocean GCMs at horizontal resolution comparable to what RCMs use today. Global models with local refinement using unstructured grids have become available for modeling regional climate (e.g., Rauscher et al. 2012; Ringler et al. 2013). While they offer opportunities to improve climate simulations, significant efforts are needed to test their veracity for regional-scale climate simulations.

  18. SIMULATING NANOSCALE SEMICONDUCTOR DEVICES M. S. LASATER

    E-Print Network [OSTI]

    in an RTD can be exploited to induce and sustain THz frequency current oscillations. To simulate output from the RTD as a function of an applied voltage drop across the RTD and also calculating as gain elements to induce a high- frequency current oscillation6 . While high-frequency oscillations

  19. Modelling and Simulation in Aerodynamic Design

    E-Print Network [OSTI]

    Mosegaard, Klaus

    when it breaks loose from the gear of a wind generator. A common feature of such simulations turbine blade, two design features are important. The aerodynamic design attempts to optimize the blade could si- mulate the bending of the wing under operating con- ditions during one rotation

  20. Simulation Analysis Center for Transportation Analysis

    E-Print Network [OSTI]

    policy makers in the planning for the loading of spent nuclear fuel at commercial utility reactors Oak Ridge National Laboratory managed by UT-Battelle, LLC for the U.S. Department of Energy under experience in simulation modeling for logistics, transportation, security and supply chain management. ORNL

  1. Simulation of Recent Southern Hemisphere Climate Change

    E-Print Network [OSTI]

    Simulation of Recent Southern Hemisphere Climate Change Nathan P. Gillett1 * and David W. J. Thompson2 Recent observations indicate that climate change over the high latitudes of the Southern's surface as well. Recent climate change in the Southern Hemi- sphere (SH) is marked by a strengthening

  2. THERMODYNAMICS Molecular Simulation of Multicomponent Reaction

    E-Print Network [OSTI]

    Lisal, Martin

    THERMODYNAMICS Molecular Simulation of Multicomponent Reaction and Phase Equilibria in MTBE Ternary System Martin Lisal´ E. Hala Laboratory of Thermodynamics, Institute of Chemical Process Fundamentals N1G 2W1, Canada Ivo Nezbeda E. Hala Laboratory of Thermodynamics, Institute of Chemical Process

  3. Investigation of light pipe simulation algorithms

    E-Print Network [OSTI]

    the CIE [DK02] standard sky patterns have been used which returns the luminance of an arbitrary sky in a robust way with bounded memory consumption, while converging to the correct solution. To simulate the sky hukommelsesforbrug, mens de konvergerer til den korrekte løsning. Til at simulere himmeler er CIE [DK02] standard sky

  4. NIMROD Resistive Magnetohydrodynamic Simulations of Spheromak Physics

    SciTech Connect (OSTI)

    Hooper, E B; Cohen, B I; McLean, H S; Wood, R D; Romero-Talamas, C A; Sovinec, C R

    2007-12-11T23:59:59.000Z

    The physics of spheromak plasmas is addressed by time-dependent, three-dimensional, resistive magneto-hydrodynamic simulations with the NIMROD code. Included in some detail are the formation of a spheromak driven electrostatically by a coaxial plasma gun with a flux-conserver geometry and power systems that accurately model the Sustained Spheromak Physics Experiment (SSPX) (R. D. Wood, et al., Nucl. Fusion 45, 1582 (2005)). The controlled decay of the spheromak plasma over several milliseconds is also modeled as the programmable current and voltage relax, resulting in simulations of entire experimental pulses. Reconnection phenomena and the effects of current profile evolution on the growth of symmetry-breaking toroidal modes are diagnosed; these in turn affect the quality of magnetic surfaces and the energy confinement. The sensitivity of the simulation results address variations in both physical and numerical parameters, including spatial resolution. There are significant points of agreement between the simulations and the observed experimental behavior, e.g., in the evolution of the magnetics and the sensitivity of the energy confinement to the presence of symmetry-breaking magnetic fluctuations.

  5. Stylistic control of ocean water simulations

    E-Print Network [OSTI]

    Root, Christopher Wayne

    2009-05-15T23:59:59.000Z

    amplitudes defined in the Fourier domain, allowing for creative control of the fluid’s surface. Such stylized height fields therefore can be simulated to exhibit natural fluid motion as well as to produce dynamic effects such as breaking waves that were...

  6. AN ANALYSIS OF SIMULATED CALIFORNIA CLIMATE USING

    E-Print Network [OSTI]

    , respectively, with funding provided by the Energy Commission. Model simulations performed by Masao Kanamitsu Analogues statistical model (CANA). #12;ii #12;iii Preface The California Energy Commission's Public institutions. PIER funding efforts focus on the following RD&D program areas: · Buildings End-Use Energy

  7. Electric Power Market Simulations Using Individuals

    E-Print Network [OSTI]

    Kemner, Ken

    in the EMCAS model #12;3 Argonne Staff Act Out the Roles of Individual Agents in a Virtual Electric PowerElectric Power Market Simulations Using Individuals as Agents Guenter Conzelmann Argonne National Generation agents ­ Own and operate virtual power plants ­ Submit power bids to the independent system

  8. Matlab Simulation Toolset for SBAS Availability Analysis

    E-Print Network [OSTI]

    Stanford University

    Matlab Simulation Toolset for SBAS Availability Analysis Shau-Shiun Jan, Wyant Chan, Todd Walter This paper describes a set of MATLAB functions currently being developed for SBAS availability analysis grid point (IGP) mask as well. The outputs of the toolset include plots of availability, protection

  9. Simulation of plasmaneutral dynamics for radiation cooling

    E-Print Network [OSTI]

    Najmabadi, Farrokh

    the heat flux effectively for future power plants. That is, radiation due to impurities will lower and increase the required pumping speed con- siderably in a power plant. In principle, the plasma energySimulation of plasma­neutral dynamics for radiation cooling Bong Ju Lee , F. Najmabadi Fusion

  10. STANDARD DATA FILES FOR COMPUTER THERMAL SIMULATION

    E-Print Network [OSTI]

    Amor, Robert

    University Box 600 Wellington November 2003 REPORT PREPARED AS PART OF RESEARCH CONTRACT WITH MARKET Project Objective 1 The Building Simulation Programs 2 HVAC Systems (2); Location of Spaces (2) Building Gains A-II-7 HVAC Regime A-II-16 Building Dimensions A-II-19 APPENDIX III WEATHER PROCESSING A-III-1

  11. SIMULATION AND FORECASTING IN INTERMODAL CONTAINER TERMINAL

    E-Print Network [OSTI]

    Gambardella, Luca Maria

    SIMULATION AND FORECASTING IN INTERMODAL CONTAINER TERMINAL Luca Maria Gambardella1 , Gianluca@idsia.ch 2 LCST, La Spezia Container Terminal, La Spezia (IT) 3 DSP, Data System & Planning sa, Manno (CH working in intermodal container terminals. INTRODUCTION The amount of work a container terminal deals

  12. Center for Advanced Modeling and Simulation Intern

    ScienceCinema (OSTI)

    Gertman, Vanessa

    2013-05-28T23:59:59.000Z

    Some interns just copy papers and seal envelopes. Not at INL! Check out how Vanessa Gertman, an INL intern working at the Center for Advanced Modeling and Simulation, spent her summer working with some intense visualization software. Lots more content like this is available at INL's facebook page http://www.facebook.com/idahonationallaboratory.

  13. A simulation pipeline for the Planck mission

    E-Print Network [OSTI]

    Martin Reinecke; Klaus Dolag; Reinhard Hell; Matthias Bartelmann; Torsten Ensslin

    2005-08-24T23:59:59.000Z

    We describe an assembly of numerical tools to model the output data of the Planck satellite. These start with the generation of a CMB sky in a chosen cosmology, add in various foreground sources, convolve the sky signal with arbitrary, even non-symmetric and polarised beam patterns, derive the time ordered data streams measured by the detectors depending on the chosen satellite-scanning strategy, and include noise signals for the individual detectors and electronic systems. The simulation products are needed to develop, verify, optimise, and characterise the accuracy and performance of all data processing and scientific analysis steps of the Planck mission, including data handling, data integrity checking, calibration, map making, physical component separation, and power spectrum estimation. In addition, the simulations allow detailed studies of the impact of many stochastic and systematic effects on the scientific results. The efficient implementation of the simulation allows the build-up of extended statistics of signal variances and co-variances. Although being developed specifically for the Planck mission, it is expected that the employed framework as well as most of the simulation tools will be of use for other experiments and CMB-related science in general.

  14. Vortices in superconductors: modelling and computer simulations

    E-Print Network [OSTI]

    Du, Qiang

    Vortices in superconductors: modelling and computer simulations B y Jennifer Deang1 , Qiang D u2 Vortices in superconductors are tubes of magnetic flux, or equivalently, cylindrical current loops is of importance both to the understanding of the basic physics of superconductors and to the design of devices. We

  15. Workload State Classification With Automation During Simulated

    E-Print Network [OSTI]

    Kaber, David B.

    Workload State Classification With Automation During Simulated Air Traffic Control David B. Kaber and Carlene M. Perry Edward P. Fitts Department of Industrial and Systems Engineering, North Carolina State to dynamically apply automation to information pro- cessing functions in aviation systems. This research examined

  16. Laboratory Facility for Simulating Solar Wind Sails

    SciTech Connect (OSTI)

    Funaki, Ikkoh [Japan Aerospace Exploration Agency, Sagamihara, Kanagawa, 229-8510 (Japan); JST/CREST, Kawaguchi, Saitama, 332-0012 (Japan); Ueno, Kazuma; Oshio, Yuya [Graduate University for Advanced Studies, Sagamihara, Kanagawa, 229-8510 (Japan); Ayabe, Tomohiro; Horisawa, Hideyuki [Tokai University, Hiratsuka, Kanagawa, 259-1292 (Japan); Yamakawa, Hiroshi [Kyoto University, Uji, Kyoto, 611-0011 (Japan); JST/CREST, Kawaguchi, Saitama, 332-0012 (Japan)

    2008-12-31T23:59:59.000Z

    Magnetic sail (MagSail) is a deep space propulsion system, in which an artificial magnetic cavity captures the energy of the solar wind to propel a spacecraft in the direction leaving the sun. For a scale-model experiment of the plasma flow of MagSail, we employed a magnetoplasmadynamic arcjet as a solar wind simulator. It is observed that a plasma flow from the solar wind simulator reaches a quasi-steady state of about 0.8 ms duration after a transient phase when initiating the discharge. During this initial phase of the discharge, a blast-wave was observed to develop radially in a vacuum chamber. When a solenoidal coil (MagSail scale model) is immersed into the quasi-steady flow where the velocity is 45 km/s, and the number density is 10{sup 19} m-3, a bow shock as well as a magnetic cavity were formed in front of the coil. As a result of the interaction between the plasma flow and the magnetic cavity, the momentum of the simulated solar wind is decreased, and it is found from the thrust measurement that the solar wind momentum is transferred to the coil simulating MagSail.

  17. Benefit Analysis of IGBT Power Device Simulation

    E-Print Network [OSTI]

    Applications ....................................... 2-2 2.2.2 Motor Controls ...................................................... 2-4 2.2.3 Power Control Equipment...................................... 2-5 2.2.4 Lighting................................................................. 2-7 2.2.5 Future Trends and Applications.............................. 2-7 2.3 IGBT Simulation

  18. 2. Unit Operation Dynamic simulation Unit operation

    E-Print Network [OSTI]

    Hong, Deog Ki

    specification . 2.2 Heat transfer equipment Air cooler, cooler/heater, heat exchanger, fired heater LNG multi flow heat exchanger . 2.3 Piping equipment Mixer, tee, pipe, gas pipe, valve, relief valve . 2.4 Rotating equipment Centrifugal compressor or expander, reciprocating compressor pump ,dynamic simulation

  19. Turbo and LDPC Codes: Implementation, Simulation,

    E-Print Network [OSTI]

    Valenti, Matthew C.

    1 Turbo and LDPC Codes: Implementation, Simulation, and Standardization June 7, 2006 Matthew/7/2006 Turbo and LDPC Codes 2/133 Tutorial Overview Channel capacity Convolutional codes ­ the MAP algorithm Turbo codes ­ Standard binary turbo codes: UMTS and cdma2000 ­ Duobinary CRSC turbo codes: DVB

  20. Simulating Threshold Circuits by Majority Circuits \\Lambda

    E-Print Network [OSTI]

    Karpinski, Marek

    Simulating Threshold Circuits by Majority Circuits \\Lambda Mikael Goldmann y Numerical Analysis, and Kailath proved super­linear lower bounds on the number of wires in constant­depth majority circuits­size depth 2 majority circuit. In general we show that a polynomial­size, depth­ d threshold circuit can