National Library of Energy BETA

Sample records for decathlon design models

  1. Solar Decathlon 2015: Nation's Leading Sustainable Home Design...

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

    Solar Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon Solar Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon...

  2. Solar Decathlon Design Models 2009 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4Energy Smooth BromeBuildings |SolarDesigning

  3. Solar Decathlon 2015: Nation's Leading Sustainable Home Design...

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

    Nation's Leading Sustainable Home Design Competition on the Horizon Solar Decathlon 2015: Nation's Leading Sustainable Home Design Competition on the Horizon July 13, 2015 - 2:15pm...

  4. Solar Decathlon Team Using Appalachian Mountain History to Model Home of the Future

    Broader source: Energy.gov [DOE]

    See how Appalachian State University used traditional mountain life architecture to design their 2011 Solar Decathlon home.

  5. Solar Decathlon Design Places People and the Outdoors at its Heart

    Broader source: Energy.gov [DOE]

    The Solar Decathlon team from New Zealand is the first from the Southern Hemisphere to compete in the competition. Learn how they are using the "Kiwi bach" as inspiration for their design.

  6. Design, Construction, Transportation, Operation and Post-Occupancy Analysis for the Texas A&M Solar Decathlon House 

    E-Print Network [OSTI]

    Malhotra, M.; Ramirez, E.; Im, P.; Cho, S.; Canez, J.; Haberl, J.; Schaider, N.; Fisk, P.; Feigenbaum, L.

    2008-01-01

    This paper describes the design, construction, transportation, operation and post occupancy analysis of the 2007 Texas A&M Solar Decathlon House (TAMU SD house). The TAMU SD house was developed to be a modular house that ...

  7. Solar Decathlon 2015: Nation's Leading Sustainable Home Design

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram: Report AppendicesAVideoSolar Decathlon 2015: Build it and

  8. Design and Performance of Solar Decathlon 2011 High-Penetration Microgrid: Preprint

    SciTech Connect (OSTI)

    Stafford, B.; Coddington, M.; Butt, R.; Solomon, S.; Wiegand, G.; Wagner, C.; Gonzalez, B.

    2012-04-01

    The U.S. Department of Energy Solar Decathlon challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The Solar Decathlon 2011 was held in Washington, D.C., from September 23 to October 2, 2011 . A high-penetration microgrid was designed, installed, and operated for the Solar Decathlon 2011 to grid-connect 19 highly energy-efficient, solar-powered competition houses to a single utility connection point. The capacity penetration of this microgrid (defined as maximum PV generation divided by maximum system load over a two-week period) was 74% based on 1-minute averaged data. Temporary, ground-laid conductors and electrical distribution equipment were installed to grid-connect the Solar Decathlon village, which included the houses as well as other electrical loads used by the event organizers. While 16 of the houses were connected to the 60 Hz microgrid, three houses from Belgium, China, and New Zealand were supplied with 50 Hz power. The design of the microgrid, including the connection of the houses powered by 50 Hz and a standby diesel generator, is discussed in this paper. In addition to the utility-supplied net energy meters at each house, a microgrid monitoring system was installed to measure and record energy consumption and PV energy production at 1-second intervals at each house. Bidirectional electronic voltage regulators were installed for groups of competition houses, which held the service voltage at each house to acceptable levels. The design and successful performance of this high-penetration microgrid is presented from the house, microgrid operator, and utility perspectives.

  9. Design of a Net-Metering and PV Exhibit for the 2005 Solar Decathlon

    SciTech Connect (OSTI)

    Wassmer, M.; Warner, C.

    2005-01-01

    In the 2005 Solar Decathlon competition, 19 collegiate teams will design, build, and operate grid-independent homes powered by photovoltaic (PV) arrays on the National Mall. The prominence of grid-interconnected systems in the marketplace has provided the impetus for the development of a net-metering exhibit to be installed and operated during the competition. The exhibit will inform the visiting public about PV basics and appropriate alternatives to grid-independent systems. It will consist of four interactive components. One will be designed to educate people about the principles of net metering using a small PV array, a grid-interactive inverter, and a variable load. Additional components of the exhibit will demonstrate the effects of orientation, cloud cover, and nighttime on performance. The nighttime component will discuss appropriate storage options for different applications.

  10. Miami Students' Solar Decathlon Design Focused on Sustainability

    Broader source: Energy.gov [DOE]

    The 2011 Florida International University Team designed their home around the ability to use adjustable panels on the outside of the home -- to protect from everything from sunshine to hurricanes.

  11. SOLAR DECATHLON EUROPE 2014 IN FRANCE REQUEST FOR PROPOSAL 2014

    E-Print Network [OSTI]

    Papanicolaou, Vassilis

    SOLAR DECATHLON EUROPE 2014 IN FRANCE REQUEST FOR PROPOSAL 2014 #12;TABLE OF CONTENTS 1 and design) are invited to participate in the third edition of the Solar Decathlon Europe in 2014 in France ! The SDE (Solar Decathlon Europe) organization, the French Ministry of territorial Equality and Housing

  12. Design, Operation, and Controlled-Island Operation of the U.S. Department of Energy Solar Decathlon 2013 Microgrid

    SciTech Connect (OSTI)

    Kurnik, C.; Butt, R. S.; Metzger, I.; Lavrova, O.; Patibandla, S.; Wagner, V.; Frankosky, M.; Wiegand, G.

    2015-04-22

    This document reports on the design and operation of a high-capacity and high-penetration-ratio microgrid, which consists of 19 photovoltaic-powered residential houses designed by collegiate teams as part of their participation in the U.S. Department of Energy Solar Decathlon 2013. The microgrid was interconnected with the local utility, and resulting net-power and power-quality events were recorded in high detail (1-minute data sampling or better). Also, a controlled-island operation test was conducted to evaluate the microgrid response to additional events such as increased loads (e.g., from electric vehicles) and bypassing of voltage regulators. This temporary ground-laid microgrid was stable under nominal and island-operation conditions; adverse weather and loads did not lead to power-quality degradation.

  13. Solar Decathlon 2013

    SciTech Connect (OSTI)

    Lewis, Chandra; Ouyang, Derek; Brown, Victoria; Ainsworth, Claire; Lee, Daniel; King, Richard; ,

    2013-10-22

    The Solar Decathlon is a perfect example of how the Energy Department is training and inspiring the next generation of architects, engineers and entrepreneurs. The two-year competition challenges collegiate teams to build energy-efficient, solar-powered houses. Over the course of the competition, students gain hands-on experience in everything from fundraising and marketing to design and construction. Showcasing their houses to the general public allows students to get feedback on their designs and how they work in the real world -- something that many of them would never get in the classroom.

  14. Solar Decathlon 2013

    ScienceCinema (OSTI)

    Lewis, Chandra; Ouyang, Derek; Brown, Victoria; Ainsworth, Claire; Lee, Daniel; King, Richard;

    2014-01-10

    The Solar Decathlon is a perfect example of how the Energy Department is training and inspiring the next generation of architects, engineers and entrepreneurs. The two-year competition challenges collegiate teams to build energy-efficient, solar-powered houses. Over the course of the competition, students gain hands-on experience in everything from fundraising and marketing to design and construction. Showcasing their houses to the general public allows students to get feedback on their designs and how they work in the real world -- something that many of them would never get in the classroom.

  15. Solar Decathlon 2005: The Event in Review

    SciTech Connect (OSTI)

    Moon, S.; Nahan, R.; Warner, C.; Wassmer, M.

    2006-06-01

    Solar Decathlon 2005: The Event in Review is a technical report describing the 2005 Solar Decathlon, an event sponsored by the U.S. Department of Energy wherein 18 collegiate teams competed in 10 contests to design, build, and operate an attractive, efficient, entirely solar-powered home. The report gives an overview of the competition, including final results, team strategies, and detailed descriptions the 18 homes.

  16. ABOUT THE SOLAR DECATHLON The U.S. Department of Energy Solar Decathlon is an award-winning program

    E-Print Network [OSTI]

    Sze, Lawrence

    ABOUT THE SOLAR DECATHLON The U.S. Department of Energy Solar Decathlon is an award-winning program that challenges collegiate teams to design, build and operate solar-powered houses that are cost-effective, energy-efficient and attractive. The competition shows consumers how to save money and energy with affordable clean energy

  17. Solar Decathlon 2009 (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2009-04-01

    This brochure provides key information about Solar Decathlon 2009--the dates, the background of the competition and event, and where to go for more information.

  18. Solar Decathlon Turns Ten | Department of Energy

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

    Solar Decathlon Turns Ten Solar Decathlon Turns Ten September 28, 2012 - 2:22pm Addthis For the past 10 years, the Solar Decathlon has educated consumers about affordable clean...

  19. Solar Decathlon 2015 | Department of Energy

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

    Solar Decathlon 2015 Solar Decathlon 2015 Addthis 1 of 68 An electric car sits parked at Clemson University during public exhibit hours of U.S. Department of Energy Solar Decathlon...

  20. Webtrends Archives by Fiscal Year - Solar Decathlon | Department...

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

    Year - Solar Decathlon Webtrends Archives by Fiscal Year - Solar Decathlon From the EERE Web Statistics Archive: Corporate sites, Webtrends archives for the Solar Decathlon site by...

  1. U.S. DEPARTMENT OF ENERGY SOLAR DECATHLON 2011 NEW ZEALAND VICTORIA UNIVERSITY OF WELLINGTON

    E-Print Network [OSTI]

    Frean, Marcus

    U.S. DEPARTMENT OF ENERGY SOLAR DECATHLON 2011 NEW ZEALAND ­ VICTORIA UNIVERSITY OF WELLINGTON #12 of Energy Solar Decathlon. Led by students from the School of Architecture, our team comprises students from into the mountains. #12;4 5 SOLAR CONTROL DESIGN FEATURES The First Light house is a net zero energy dwelling

  2. 2005 Solar Decathlon (Competition Program)

    SciTech Connect (OSTI)

    Not Available

    2005-10-01

    The 2005 Solar Decathlon Competition Program is distributed to Solar Decathlon visitors, media, sponsors, and the student competitors. It contains basic facts about the Solar Decathlon: what, where, when, who, and how. It is a guide for visitors to the events and workshops. It describes the 10 contests and the technologies used in the houses. It celebrates the accomplishments of the competitors and provides an opportunity for the major sponsors to describe their roles and relay their commitment to the ideals of the Solar Decathlon.

  3. A Solar Decathlon Entry for Historic Norfolk

    Broader source: Energy.gov [DOE]

    It’s a tale of two universities with a vision for one historic city. Students from both Hampton and Old Dominion universities have joined forces to compete in the upcoming Energy Department Solar Decathlon with their entry, called Unit 6 Unplugged. At Tidewater Virginia, the students will unveil their vision for the future -- an energy-efficient house that captures the “Arts and Crafts” design style of homes dotted throughout historic Norfolk, Virginia.

  4. Impact Evaluation of the U.S. Department of Energy's Solar Decathlon...

    Energy Savers [EERE]

    of Energy (DOE) Solar Decathlon Program challenges teams of college students to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and...

  5. Solar Decathlon Turns Ten | Department of Energy

    Energy Savers [EERE]

    jobs in the clean energy economy. | Photo courtesy of Stefano Paltera, U.S. Department of Energy Solar Decathlon. For the past 10 years, the Solar Decathlon has educated consumers...

  6. Solar Decathlon Opening | Department of Energy

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

    Solar Decathlon Opening Solar Decathlon Opening October 6, 2005 - 12:25pm Addthis Remarks Prepared for Energy Secretary Bodman Let me begin by welcoming all of you to this Solar...

  7. Solar Decathlon Entry Uses iPad to Monitor Home

    Broader source: Energy.gov [DOE]

    The University of Tennessee, Knoxville is participating in its first Solar Decathlon 2011 competition, featuring its home, “Living Light.” Named for its very brightly sunlit double facade glass system, the home’s blueprint was inspired by the cantilever barns of Southern Appalachia, which feature giant eves to provide shade and a two-core design.??

  8. U.S. Department of Energy Solar Decathlon Visitors Guide 2015

    SciTech Connect (OSTI)

    2015-09-03

    The U.S. Department of Energy 2015 Visitors Guide is a free, hard-copy publication distributed free to those attending the Solar Decathlon event. The publications' objectives are to serve as the primary information resource for those in attendance, and to deliver a compelling message about the Solar Decathlon's success as a proven workforce development program and its role in educating students and the public about clean energy products and design solutions. The U.S. Department of Energy 2015 Visitors Guide SD15 Visitors Guide goals are to guide attendees through the Solar Decathlon village; List and explain the 10 contests; educate attendees about the participating teams and their competition houses; provide access to more information on the Solar Decathlon website through the use of QR codes; and acknowledge the support of all event sponsors.

  9. Energy Department Announces Student Teams for Solar Decathlon...

    Office of Environmental Management (EM)

    Energy Department Announces Student Teams for Solar Decathlon 2015 Energy Department Announces Student Teams for Solar Decathlon 2015 February 19, 2014 - 12:00am Addthis The Energy...

  10. Energy Department Announces Student Teams for Solar Decathlon...

    Office of Environmental Management (EM)

    Announces Student Teams for Solar Decathlon 2015 Energy Department Announces Student Teams for Solar Decathlon 2015 February 19, 2014 - 12:00am Addthis The Energy Department on...

  11. Solar Decathlon Technology Spotlight: Structural Insulated Panels...

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

    spotlights that introduces common technologies used in U.S. Department of Energy Solar Decathlon team houses. Structural insulated panels (SIPs) are prefabricated...

  12. U.S. Department of Energy Solar Decathlon

    SciTech Connect (OSTI)

    2011-12-16

    The U.S. Department of Energy Solar Decathlon is an award-winning program that challenges 20 collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. In addition to showcasing the cost savings and environmental benefits of market-ready solar technologies, the event encourages participating students to think in new ways about incorporating practical, affordable clean-energy solutions into residential applications.

  13. Team Massachusetts Brings a Fourth Dimension to the Solar Decathlon

    Broader source: Energy.gov [DOE]

    Team Massachusetts is bringing a unique perspective to the Solar Decathlon this fall. You might say it is a fourth dimension because of the team’s newly constructed 4D Home. But it could also be argued that it is because the Massachusetts College of Art and Design and University of Massachusetts Lowell are collaborating for the team’s first entry into the biannual competition, and they’re both public institutions.

  14. Solar Decathlon Newsletter, April/May 2002

    SciTech Connect (OSTI)

    Not Available

    2002-04-01

    Four-page, two-color newsletter produced bi-monthly and distributed electronically for Solar Decathlon teams. This newsletter highlights activities associated with the Solar Decathlon, informs student teams about competition logistics and contest updates, and keeps sponsors, the media, and the public up to date on the event.

  15. Department of Energy Considers New Venue for Solar Decathlon...

    Office of Environmental Management (EM)

    Department of Energy Considers New Venue for Solar Decathlon 2013 Department of Energy Considers New Venue for Solar Decathlon 2013 August 1, 2011 - 3:29pm Addthis Washington, D.C....

  16. University of Colorado Wins 2005 Solar Decathlon | Department...

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

    University of Colorado Wins 2005 Solar Decathlon University of Colorado Wins 2005 Solar Decathlon October 14, 2005 - 11:56am Addthis Solar Village to Remain Open to Public through...

  17. 2007 Solar Decathlon Closing Ceremony and Awards | Department...

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

    2007 Solar Decathlon Closing Ceremony and Awards 2007 Solar Decathlon Closing Ceremony and Awards October 19, 2007 - 3:21pm Addthis Remarks as Prepared for Secretary Bodman Thank...

  18. Solar Decathlon Team Leading the Way Toward Sustainable Living...

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

    Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the Wake of Disasters Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the Wake of...

  19. Solar Decathlon 2015: Energy.gov Fan Favorite Poll Results |...

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

    Solar Decathlon 2015: Energy.gov Fan Favorite Poll Results Solar Decathlon 2015: Energy.gov Fan Favorite Poll Results October 22, 2015 - 10:10am Addthis West Virginia University...

  20. Solar Decathlon 2013: Going the Distance

    Office of Energy Efficiency and Renewable Energy (EERE)

    As part of our behind-the-scenes look at what it takes to compete in the Solar Decathlon, we are examining how teams transport their houses to the competition site.

  1. Solar Decathlon Update from Secretary Chu

    ScienceCinema (OSTI)

    Chu, Steven

    2013-05-29

    Secretary Steven Chu provides his insights on the 2009 Solar Decathlon in Washington, DC. To view each of the houses in this year's competition and vote for your favorite, visit http://www.solardecathlon.org/virtual_tours/

  2. Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation ofAlbuquerque|Sensitive Species3performedValley | SystemSolar Decathlon

  3. Belgium’s Ghent University Prepares their E-Cube for Solar Decathlon 2011

    Broader source: Energy.gov [DOE]

    The Ghent University 2011 Solar Decathlon Team -- aka Team Belgium -- is a unique two-story home that could very well be an international star at the competition due to the Belgium team’s innovative, ultra-efficient, passive home design.

  4. 2007 Solar Decathlon: Powered by the Sun (Competition Program)

    SciTech Connect (OSTI)

    Not Available

    2007-09-01

    The 2007 Solar Decathlon Competition Program is distributed to Solar Decathlon visitors, media, sponsors, and the student competitors. It contains basic facts about the Solar Decathlon: what, where, when, who, and how. It is a guide for visitors to the events and workshops. It describes the 10 contests and the technologies used in the houses. It celebrates the accomplishments of the competitors and provides an opportunity for the major sponsors to describe their roles and relay their commitment to the ideals of the Solar Decathlon.

  5. Solar Decathlon house continues to yield data | ornl.gov

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

    Solar Decathlon house continues to yield data ORNL, University of Tennessee to continue lessons learned in DOE solar energy competition Courtesy of: UT College of Architecture and...

  6. Solar Decathlon at Home in the D.C. Community

    Broader source: Energy.gov [DOE]

    Celebrating the completion of the Empowerhouse Solar Decathlon team's demonstration house into a permanent, two-family home in the District's Ward 7.

  7. Grid Modernization Highlighted in Washington DC in September with the Solar Decathlon

    Broader source: Energy.gov [DOE]

    Smart Grid is on display at the U.S. Department of Energy 2011 Solar Decathlon, held September 23 through October 2 on the National Mall, West Potomac Park, Washington, DC.  The decathlon...

  8. Impact Evaluation of the U.S. Department of Energy’s Solar Decathlon Program

    SciTech Connect (OSTI)

    none,

    2012-12-01

    This report includes the methodology and findings in evaluating DOE’s Solar Decathlon event. The primary purpose of this evaluation is to learn how effectively the Solar Decathlon event is meeting its objectives.

  9. Smart Meters Help Balance Energy Consumption at Solar Decathlon

    Broader source: Energy.gov [DOE]

    Clouds, rain, thunderstorms… at Solar Decathlon Village? Oh my, you may say. But less-than-ideal weather conditions are no match for this year's teams, thanks to smart grid technology that is helping them monitor their energy consumption.

  10. Solar Decathlon 2015 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation ofAlbuquerque|Sensitive Species3performedValley | SystemSolar Decathlon 2015

  11. Solar Decathlon Participants Bring Innovation to D.C.'s Ward 7

    Broader source: Energy.gov [DOE]

    Read about the "Empowerhouse Collaborative" -- a 2011 Solar Decathlon Team partnering with Habitat for Humanity building their home for a family in Washington, D.C.

  12. University of Maryland Solar Decathlon Team Celebrates with a "Shed Raising"

    Broader source: Energy.gov [DOE]

    The University of Maryland 2011 Solar Decathlon Team is using one element -- water -- as a major component of their home. Here's how.

  13. U.S. Department of Energy Solar Decathlon: Challenging Students to Build Energy Efficient, Cost-Effective, and Attractive Solar-Powered Houses

    SciTech Connect (OSTI)

    Simon, J.

    2012-01-01

    The U.S. Department of Energy Solar Decathlon challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The winner of the competition is the team that best blends affordability, consumer appeal, and design excellence with optimal energy production and maximum efficiency. The paper discusses the solutions developed for the event. We believe that the solutions implemented for Solar Decathlon 2011 represent current trends and that by analyzing, critiquing, and exposing the solutions pursued, the industry can become better suited to address challenges of the future. Constructing a solar community using high-efficiency design and unique materials while remaining code compliant, safe, and effective results in solutions that are market relevant, important, and interesting to the industry as a whole.

  14. Illuminating Solar Decathlon Homes: Exploring Next Generation Lighting Technology - Light Emitting Diodes

    SciTech Connect (OSTI)

    Gordon, Kelly L.; Gilbride, Theresa L.

    2008-05-22

    This report was prepared by PNNL for the US Department of Energy Building Technologies Program, Solid-State Lighting Program. The report will be provided to teams of university students who are building houses for the 2009 Solar Decathlon, a home design competition sponsored in part by DOE, to encourage teams to build totally solar powered homes. One aspect of the competition is lighting. This report provides the teams with information about LED lighting that can help them determine how they incorporate LED lighting into their homes. The report provides an overview of LED technology, a status of where LED technology is today, questions and answers about lighting quality, efficiency, lifetime etc.; numerous examples of LED products; and several weblinks for further research.

  15. Solar Decathlon 2015: Meet the Teams | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram: Report AppendicesAVideoSolar Decathlon 2015: Build it and They

  16. Solar Decathlon 2015: The Next Generation of Clean Energy Leaders |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram: Report AppendicesAVideoSolar Decathlon 2015: Build it andDepartment of

  17. Solar Decathlon Visitors Guide 2011, National Mall, West Potomac Park, Washington, D.C., September 23 - October 2, 2011 (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-09-01

    Guide to the student-designed houses, ten contests, exhibits, and workshops of the U.S. Department of Energy 2011 Solar Decathlon, held in Washington, D.C., from September 23 through October 2, 2011. Teams of college students designed and built the solar-powered houses on display here. They represent 13 U.S. states, five countries, and four continents. Now the teams are rising to the challenge by competing in 10 contests over nine days, with the championship trophy on the line. This is their time to shine. The 2011 teams may share a common goal - to design and build the best energy-efficient house powered by the sun - but their strategies are different. One house is made of precast concrete, while another 'dances' in response to its environment. Another house is meant to sit atop a building, proving the sky's the limit for energy innovation. Whatever your idea of sustainable living may be, you are bound to find it at the Solar Decathlon.

  18. Team Canada Returns to the Solar Decathlon with First Nation Values in Mind

    Broader source: Energy.gov [DOE]

    Team Canada’s 2011 Solar Decathlon house -- which is known as TRTL (Technological Residence that respects Traditional Living) -- addresses critical housing issues in Alberta, Canada’s Aboriginal communities.

  19. Team New Jersey’s Beach House Approaches Sustainable Design from a Different Angle

    Broader source: Energy.gov [DOE]

    Team New Jersey's 2011 Solar Decathlon house is incorporating the age-old technology of concrete into their beach house design. How is this energy efficient? Read more to find out!

  20. Development of Reference Models and Design Tools (LCOE Models...

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

    Development of Reference Models and Design Tools (LCOE Models) Development of Reference Models and Design Tools (LCOE Models) Development of Reference Models and Design Tools (LCOE...

  1. Cooperative Modeling and Design History Tracking Using Design Tracking Matrix 

    E-Print Network [OSTI]

    Kim, Jonghyun

    2010-10-12

    This thesis suggests a new framework for cooperative modeling which supports concurrency design protocol with a design history tracking function. The proposed framework allows designers to work together while eliminating design conflicts...

  2. Design exploration through bidirectional modeling of constraints

    E-Print Network [OSTI]

    Kilian, Axel, 1971-

    2006-01-01

    Today digital models for design exploration are not used to their full potential. The research efforts in the past decades have placed geometric design representations firmly at the center of digital design environments. ...

  3. Solar Decathlon 2015: Build it and They Will Come | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram: Report AppendicesAVideoSolar Decathlon 2015: Build it and They Will

  4. Physical layer model design for wireless networks 

    E-Print Network [OSTI]

    Yu, Yi

    2009-06-02

    Wireless network analysis and simulations rely on accurate physical layer models. The increased interest in wireless network design and cross-layer design require an accurate and efficient physical layer model especially when a large number of nodes...

  5. Gas ejector modeling for design and analysis 

    E-Print Network [OSTI]

    Liao, Chaqing

    2009-05-15

    A generalized ejector model was successfully developed for gas ejector design and performance analysis. Previous 1-D analytical models can be derived from this new comprehensive model as particular cases. For the first ...

  6. Exploring chaos to model the design process 

    E-Print Network [OSTI]

    Sharkawy, Ahmed

    1990-01-01

    of design as a sequence of three rational processes (14) 10 Jansson's tsvo space model (15) 4 The different types of constraints within the design process The major processes occuring in Jansson's concept space. 19 6 Figure 6a depicts the skeleton upon... model and how it fits within March's depiction 9 Reduced two variable model and how it fits within Jansson's scheme . . 45 10 Map of case: 3=2. 0, /=50, d=0. 15 47 11 Map of case: %=2. 2, y=50, d=0. 15 48 12 Map of' case: 4=2. 6, @=50, d=0. 15 49...

  7. Key challenges to model-based design : distinguishing model confidence from model validation

    E-Print Network [OSTI]

    Flanagan, Genevieve (Genevieve Elise Cregar)

    2012-01-01

    Model-based design is becoming more prevalent in industry due to increasing complexities in technology while schedules shorten and budgets tighten. Model-based design is a means to substantiate good design under these ...

  8. Optimization Modelling Example Design Implementation Conclusions A Structure-Conveying Modelling Language for

    E-Print Network [OSTI]

    Grothey, Andreas

    Optimization Modelling Example Design Implementation Conclusions A Structure-Conveying Modelling Languages for Mathematical Programming 3 An example problem from network design 4 Design of Structured, K. Woodsend Structure-Conveying Modelling Language #12;Optimization Modelling Example Design

  9. Model for Sustainable Urban Design With Expanded Sections on...

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

    Model for Sustainable Urban Design With Expanded Sections on Distributed Energy Resources, February 2004 Model for Sustainable Urban Design With Expanded Sections on Distributed...

  10. Mesoscale Modeling Framework Design: Subcontract Report | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Mesoscale Modeling Framework Design: Subcontract Report Citation Details In-Document Search Title: Mesoscale Modeling Framework Design: Subcontract Report You are accessing a...

  11. Design, Modeling, and Validation of a Flame Reformer for LNT...

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

    Design, Modeling, and Validation of a Flame Reformer for LNT External Bypass Regeneration Design, Modeling, and Validation of a Flame Reformer for LNT External Bypass Regeneration...

  12. Autonomie Modeling Tool Improves Vehicle Design and Testing,...

    Office of Environmental Management (EM)

    Autonomie Modeling Tool Improves Vehicle Design and Testing, Informs New Fuel Economy Standards Autonomie Modeling Tool Improves Vehicle Design and Testing, Informs New Fuel...

  13. Augmented Network Model For Engineering System Design

    E-Print Network [OSTI]

    de Weck, Olivier L.

    can have different capacities and costs, maintenance routines, dynamics. Link existence can vary design". Various fields have applied network modeling to engineering applications, such as operations, with their network description and brief discussion of simple network statistics. Then, we describe in detail one

  14. Multi-core Technologies Model Design and System Architecture

    E-Print Network [OSTI]

    Albanese, Claudio

    Multi-core Technologies Model Design and System Architecture Conclusions High Performance Pricing-core Technologies Model Design and System Architecture Conclusions Summary Multi-core Technologies Model Design Model Design and System Architecture Conclusions Banking, Mathematics and Technology Modern banking

  15. Solar Decathlon 2013: Going the Distance | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4Energy Smooth BromeBuildings |SolarDesigning the

  16. Analytical model for Stirling cycle machine design

    E-Print Network [OSTI]

    Formosa, Fabien; 10.1016/j.enconman.2010.02.010

    2013-01-01

    In order to study further the promising free piston Stirling engine architecture, there is a need of an analytical thermodynamic model which could be used in a dynamical analysis for preliminary design. To aim at more realistic values, the models have to take into account the heat losses and irreversibilities on the engine. An analytical model which encompasses the critical flaws of the regenerator and furthermore the heat exchangers effectivenesses has been developed. This model has been validated using the whole range of the experimental data available from the General Motor GPU-3 Stirling engine prototype. The effects of the technological and operating parameters on Stirling engine performance have been investigated. In addition to the regenerator influence, the effect of the cooler effectiveness is underlined.

  17. Electromagnetic Modelling of Superconducting Sensor Designs

    E-Print Network [OSTI]

    Gerra, Guido

    OF MATERIALS SCIENCE AND METALLURGY Electromagnetic Modelling of Superconducting Sensor Designs Guido Gerra Clare Hall, University of Cambridge 1 Preface The present dissertation has been submitted for the degree of Master... in the current circulating in it to the magnetic field the SQUID is subjected to. This possibility arises from the dynamics of electromagnetic fields in superconductors combined with the Josephson effect, and appropriate coupling schemes can be used to measure...

  18. Development, evaluation, and design applications of an AMTEC converter model 

    E-Print Network [OSTI]

    Spence, Cliff Alan

    2002-01-01

    An AMTEC converter model was developed and its effectiveness as a design tool was evaluated. To develop the model, requirements of the model were defined, modeling equations were selected, and a methodology for model development was established...

  19. INCORPORATION OF GROUNDWATER FLOW INTO NUMERICAL MODELS AND DESIGN MODELS

    E-Print Network [OSTI]

    -coupled, ground-source heat pumps, groundwater, heat pump, heat exchanger, heat transfer, numerical models-loop ground-coupled heat exchangers. Green and Perry (1961) demonstrated that the value of effective thermal on the design and performance of vertical closed-loop ground heat exchangers. Based on the investigation results

  20. Model Reformulation and Design of Lithium-ion Batteries

    E-Print Network [OSTI]

    Subramanian, Venkat

    987 94 Model Reformulation and Design of Lithium-ion Batteries V.R. Subramanian1,*, V. Boovaragavan Prediction......................................997 Optimal Design of Lithium-ion Batteries Lithium-ion batteries, product design, Bayesian estimation, Markov Chain Monte Carlo simulation

  1. Online National Solar Energy Directory and 2005 Solar Decathlon Product Directory. Final report

    SciTech Connect (OSTI)

    Hamm, Julia; Taylor, Mike

    2008-12-31

    The Solar Electric Power Association (SEPA), in partnership with the American Solar Energy Society, developed an online National Solar Energy Directory with clear, comprehensive information on suppliers and purchasing options. The site was originally located at FindSolar.com, but has recently been moved to Find-Solar.org. The original FindSolar.com domain name has been taken by the American Solar Energy Society (a partner in this project) and utilized for a similar but different project. This Find-Solar.org directory offers the rapidly growing base of potential solar customers a simple, straightforward destination to learn about their solar options. Members of the public are able to easily locate contractors in their geographic area and verify companiesâ?? qualifications with accurate third-party information. It allows consumers to obtain key information on the economics, incentives, desirability, and workings of a solar energy system, as well as competing quotes from different contractors and reviews from customers they have worked with previously. Find-Solar.org is a means of facilitating the growing public interest in solar power and overcoming a major barrier to widespread development of U.S. solar markets. In addition to the development of Find-Solar.org, SEPA developed a separate online product directory for the 2005 DOE Solar Decathlon to facilitate the communication of information about the energy efficiency and renewable energy products used in each university teamâ??s home.

  2. Viscous throughflow modeling for multistage compressor design

    SciTech Connect (OSTI)

    Howard, M.A.; Gallimore, S.J. )

    1993-04-01

    An existing throughflow method for axial compressors, which accounts for the effects of spanwise mixing using a turbulent diffusion model, has been extended to include the viscous shear force on the endwall. The use of a shear force, consistent with a no-slip condition, on the annulus walls in the throughflow calculations allows realistic predictions of the velocity and flow angle profiles near the endwalls. The annulus wall boundary layers are therefore incorporated directly into the throughflow prediction. This eliminates the need for empirical blockage factors or independent annulus boundary layer calculations. The axisymmetric prediction can be further refined by specifying realistic spanwise variations of loss coefficient and deviation to model the three-dimensional endwall effects. The resulting throughflow calculation gives realistic predictions of flow properties across the whole span of a compressor. This is confirmed by comparison with measured data from both low and high-speed multistage machines. The viscous throughflow method has been incorporated into an axial compressor design system. The method predicts the meridional velocity defects in the endwall region and consequently blading can be designed that allows for the increased incidence, and low dynamic head, near the annulus walls.

  3. Solar Decathlon

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4Energy Smooth BromeBuildings |Solar PoolU.S. Department

  4. Evaluation of Generic EBS Design Concepts and Process Models...

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

    and 6) coupled thermal-mechanical (TM) and thermo-hydrological (TH) modeling in salt. Evaluation of Generic EBS Design Concepts and Process Models Implications to EBS...

  5. Battery Thermal Management System Design Modeling (Presentation)

    SciTech Connect (OSTI)

    Kim, G-H.; Pesaran, A.

    2006-10-01

    Presents the objectives and motivations for a battery thermal management vehicle system design study.

  6. Solar Decathlon 2013: Designing the Houses of Today | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyThe U.S. Department ofEnergy(Department or DOE)ofEnergy It took six months andThe

  7. Solar Decathlon 2013: Designing the Houses of Today | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effect Photovoltaics -7541 *ImpactScience of SignaturesSoft0

  8. Effective Design And Use Of Computer Decision Models.

    E-Print Network [OSTI]

    Fuerst, William L.

    1984-03-01

    of decision models such as simulation have not been demonstrated. This paper looks at recent literature regarding decision model deficiencies, evaluates selected financial simulation model packages, and suggests design needs for expanding the use of decision...

  9. Automatically Creating Design Models from 3D Anthropometry Data

    E-Print Network [OSTI]

    Wuhrer, Stefanie; Bose, Prosenjit

    2011-01-01

    When designing a product that needs to fit the human shape, designers often use a small set of 3D models, called design models, either in physical or digital form, as representative shapes to cover the shape variabilities of the population for which the products are designed. Until recently, the process of creating these models has been an art involving manual interaction and empirical guesswork. The availability of the 3D anthropometric databases provides an opportunity to create design models optimally. In this paper, we propose a novel way to use 3D anthropometric databases to generate design models that represent a given population for design applications such as the sizing of garments and gear. We generate the representative shapes by solving a covering problem in a parameter space. Well-known techniques in computational geometry are used to solve this problem. We demonstrate the method using examples in designing glasses and helmets.

  10. Nonlinear Modeling and Control Design of Active Helicopter Blades

    E-Print Network [OSTI]

    Patil, Mayuresh

    Nonlinear Modeling and Control Design of Active Helicopter Blades Matthias Althoff , Mayuresh J dynamic solution and control design of active helicopter blades. Following are the significant new reduction technique is used to derive a low-order, high fidelity nonlinear blade model for control design

  11. ENHANCING DISCRETE CHOICE DEMAND MODELING FOR DECISION-BASED DESIGN

    E-Print Network [OSTI]

    Chen, Wei

    the Decision-Based Design framework. Even though demand modeling techniques exist in market research, little design, in particular that facilitates engineering decision-making. In market research, two major demand1 ENHANCING DISCRETE CHOICE DEMAND MODELING FOR DECISION-BASED DESIGN In Press of ASME Journal

  12. A design tool for reusing integration knowledge in simulation models

    E-Print Network [OSTI]

    Han, Sangmok

    2006-01-01

    In the academic field of computer-aided product development, the role of the design tool is to support engineering designers to develop and integrate simulation models. Used to save time and costs in product development ...

  13. Modelling and Design of Resilient Networks under Challenges

    E-Print Network [OSTI]

    Cetinkaya, Egemen Kemal

    2013-12-31

    that can help evaluate design choices for the current and Future Internet. Graph models to analyse critical infrastructures are examined and a multilevel graph model is developed to study interdependencies between different networks. Furthermore, graph...

  14. Using Simulation Models for District Chilled Water Distribution Systems Design 

    E-Print Network [OSTI]

    Chen, Q.; Xu, C.; Deng, S.; Claridge, D. E.; Turner, W. D.

    2004-01-01

    the design. The focus of this paper is to demonstrate how the using of the computerized simulation model can give the engineer the ability to explore many more alternative design scenarios and to identify more cost-effective and robust designs. The University...

  15. Modeling and Optimal Design of Di ractive Optical Structures

    E-Print Network [OSTI]

    Dobson, David C.

    Modeling and Optimal Design of Di ractive Optical Structures Gang Bao Department of Mathematics be designed to perform functions unattainable with traditionaloptical elements. For example, structures and for the determination of optimal" device designs. In contrast to the case of traditional optical structures, geometrical

  16. Refinement of Hybrid Systems from Formal Models to Design Languages

    E-Print Network [OSTI]

    Cengarle, María Victoria

    of high-level design of a control system, it is highly desirable to use representations that accuratelyRefinement of Hybrid Systems from Formal Models to Design Languages Jan Romberg Systems & Software Abstract System-level design for discrete-continuous embedded systems is a complex and error- prone task

  17. Data Abstraction In Cognitive Models for Compositional Design in Painting

    E-Print Network [OSTI]

    Peterson, James K

    Data Abstraction In Cognitive Models for Compositional Design in Painting James Peterson Linda Dzuris June 19, 2003 Abstract In this paper, we discuss the design of painting data, which is neutral the process of artistic design for eventual use in the development of an autonomous painting composition

  18. Systems modeling for electric ship design

    E-Print Network [OSTI]

    Soultatis, Charalambos

    2004-01-01

    Diesel and gas turbine electric ship propulsion are of current interest for several types of vessels that are important for commercial shipping and for the next generation of war ships. During the design process of a ...

  19. Designing user models in a virtual cave environment

    SciTech Connect (OSTI)

    Brown-VanHoozer, S.; Hudson, R.; Gokhale, N.

    1995-12-31

    In this paper, the results of a first study into the use of virtual reality for human factor studies and design of simple and complex models of control systems, components, and processes are described. The objective was to design a model in a virtual environment that would reflect more characteristics of the user`s mental model of a system and fewer of the designer`s. The technology of a CAVE{trademark} virtual environment and the methodology of Neuro Linguistic Programming were employed in this study.

  20. OPTIMAL EXPERIMENTAL DESIGN FOR MODELING BATTERY DEGRADATION Joel C. Forman

    E-Print Network [OSTI]

    Krstic, Miroslav

    , battery health dependence on voltage, and a lack of power fade under the cy- cling conditions. The useOPTIMAL EXPERIMENTAL DESIGN FOR MODELING BATTERY DEGRADATION Joel C. Forman Mechanical Engineering.edu ABSTRACT Accurate battery health modeling allows one to make better design decisions, enables health

  1. Designing and Building a Graphical Model Library in Standard ML

    E-Print Network [OSTI]

    Murphy, Kevin Patrick

    Designing and Building a Graphical Model Library in Standard ML Clint Morgan December 2004 Abstract This paper discusses several design considerations for a probabilistic graphical model library. The library, dubbed GM, currently only contains a small subset of desirable features for such a library. In particular

  2. Wind Turbine Design Cost and Scaling Model

    SciTech Connect (OSTI)

    Fingersh, L.; Hand, M.; Laxson, A.

    2006-12-01

    This model intends to provide projections of the impact on cost from changes in economic indicators such as the Gross Domestic Product and Producer Price Index.

  3. Development of a room air conditioner design model 

    E-Print Network [OSTI]

    Penson, Steven Brad

    1988-01-01

    AND RECOMMENDATIONS. Page . 12 . 12 . 20 . 33 . 38 . 48 . 50 . 56 Conclusions. Recommendations. REFERENCES APPENDIX A . 57 . 57 . 59 . 61 VITA . 66 LZST OP TABLES Table Page 2. 1 Major output parameters from the ORNL model 3. 1 Effect of tube.... Efficiency improvements are evaluated with the aid of a computer model. The model chosen for this analysis was the Oak Ridge National Laboratory (ORNL) heat pump model [5] . The ORNL Heat Pump Design Model is a FORTRAN computer program developed...

  4. Designing Mobility Models based on Social Networks Theory

    E-Print Network [OSTI]

    Mascolo, Cecilia

    Designing Mobility Models based on Social Networks Theory Mirco Musolesi Cecilia Mascolo m in social sciences for years. In this paper we propose a new mobility model founded on social network theory of the validation is, therefore, highly dependent on how realistic the movement models used in the simulations are

  5. Design as a strategic resource : design's contributions to competitive advantage aligned with strategy models

    E-Print Network [OSTI]

    Stevens, John Simon

    2010-03-16

    of customer experience are managed by separate operational divisions, a service design approach seeks to unite them [Kimbell, 2009]. In attending to the intangible aspects that characterise services, the emerging practice of service design follows and draws... et al., 2009]. It is observed that a service design approach is likely to involve discussion of “value, busi- ness models and strategy” [Kimbell, 2009], and may indeed provoke a re-examination of the firm’s long-term direction or structure...

  6. Sustainability Curriculum Models Sustainability Design Charrette Curriculum Workshop

    E-Print Network [OSTI]

    Zaferatos, Nicholas C.

    Sustainability Curriculum Models Sustainability Design Charrette Curriculum Workshop December 4 student that goes through WWU understands how sustainability is practiced on campus Students leave with a commitment, knowledge, and resources to practice sustainability in work and private life. Content

  7. Modeling and design of a MEMS piezoelectric vibration energy harvester

    E-Print Network [OSTI]

    Du Toit, Noël Eduard

    2005-01-01

    The modeling and design of MEMS-scale piezoelectric-based vibration energy harvesters (MPVEH) are presented. The work is motivated by the need for pervasive and limitless power for wireless sensor nodes that have application ...

  8. AERODYNAMIC AND ELECTROMECHANICAL DESIGN, MODELING AND IMPLEMENTATION OF

    E-Print Network [OSTI]

    Kochersberger, Kevin

    AERODYNAMIC AND ELECTROMECHANICAL DESIGN, MODELING AND IMPLEMENTATION OF PIEZOCOMPOSITE AIRFOILS, Macro-Fiber Composite, Unimorph, Bimorph © Onur Bilgen, 2010 #12;AERODYNAMIC AND ELECTROMECHANICAL of the aerodynamic and electromechanical systems that are necessary for a practical implementation

  9. Integration of engineering models in computer-aided preliminary design

    E-Print Network [OSTI]

    Lajoie, Ronnie M.

    The problems of the integration of engineering models in computer-aided preliminary design are reviewed. This paper details the research, development, and testing of modifications to Paper Airplane, a LISP-based computer ...

  10. Modeling and design of semi-solid flow batteries

    E-Print Network [OSTI]

    Brunini, Victor Eric

    2012-01-01

    A three-dimensional dynamic model of the recently introduced semi-solid flow battery system is developed and applied to address issues with important design and operation implications. Because of the high viscosity of ...

  11. PARAMETRIC MODELS FOR ESTIMATING WIND TURBINE FATIGUE LOADS FOR DESIGN

    E-Print Network [OSTI]

    Sweetman, Bert

    1 PARAMETRIC MODELS FOR ESTIMATING WIND TURBINE FATIGUE LOADS FOR DESIGN Lance Manuel1 Paul S-4020 ABSTRACT International standards for wind turbine certification depend on finding long-term fatigue load loads. #12;2 INTRODUCTION Design constraints for wind turbine structures fall into either extreme load

  12. COSTS MODELS IN DESIGN AND MANUFACTURING OF SAND CASTING PRODUCTS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    COSTS MODELS IN DESIGN AND MANUFACTURING OF SAND CASTING PRODUCTS Nicolas PERRY Ass. Prof., IRCCy.Bernard@irccyn.ec-nantes.fr Abstract: In the early phases of the product life cycle, the costs controls became a major decision tool difficulties, we will present an approach using a concept of cost entity related to the design and realization

  13. Design of Embedded Systems: Formal Models, Validation, and Synthesis

    E-Print Network [OSTI]

    Grosu, Radu

    critical situations, where reliability and safety are more important criteria than performance. TodayDesign of Embedded Systems: Formal Models, Validation, and Synthesis S. Edwards, L. Lavagno, E. A. Lee, and A. Sangiovanni-Vincentelli November 5, 1999 Abstract This paper addresses the design

  14. Microstructural Modeling and Design of Rechargeable Lithium-Ion Batteries

    E-Print Network [OSTI]

    García, R. Edwin

    Microstructural Modeling and Design of Rechargeable Lithium-Ion Batteries R. Edwin Garci´a,a, *,z microstructure. Experi- mental measurements are reproduced. Early models for lithium-ion batteries were developed Institute of Technology, Cambridge, Massachusetts 01239-4307, USA The properties of rechargeable lithium-ion

  15. Research Article Automating Risk Analysis of Software Design Models

    E-Print Network [OSTI]

    Miller, Barton P.

    Research Article Automating Risk Analysis of Software Design Models Maxime Frydman,1 Guifré Ruiz,2 to reduce the need for costly human expertise to perform risk analysis in software, which is common of these secure development methodologies share one essential risk analysis activity, called threat modeling [4

  16. MODELING DESIGN ACTIVITY IN AUTOMOBILE INDUSTRY Joo Ferreira1

    E-Print Network [OSTI]

    da Silva, Alberto Rodrigues

    The Automotive industry is changing drastically. Many companies are re-organizing, reengineering, downsizingMODELING DESIGN ACTIVITY IN AUTOMOBILE INDUSTRY João Ferreira1 , André Carvalho2 , João Pimentel3 and cost. The first step to achieve this goal is the Modeling Business Process using UML (industry standard

  17. Integrated Modeling and Design of Nonlinear Control Systems

    E-Print Network [OSTI]

    Kwatny, Harry G.

    numerical processes. Our view is that symbolic computing has matured to a point that does enable computing tools we have implemented in Mathematica enable the efficient assembly of mathematical models (numerical) models for design and analysis using MATLAB's extensive facilities. Symbolic Computing

  18. Design, Modeling and Preliminary Control of a Compliant Hexapod Robot

    E-Print Network [OSTI]

    Saranlý, Uluç

    Design, Modeling and Preliminary Control of a Compliant Hexapod Robot Uluc. Saranli1 , Martin control of RHex, an autonomous dynami- cally stable hexapod possessing merely six actuated de- grees and computational autonomy, critical com- ponents for legged robotics applications. A compliant hexapod model, used

  19. Design, Modeling and Preliminary Control of a Compliant Hexapod Robot

    E-Print Network [OSTI]

    Saranlý, Uluç

    Design, Modeling and Preliminary Control of a Compliant Hexapod Robot Uluc . Saranli 1# , Martin control of RHex, an autonomous dynami­ cally stable hexapod possessing merely six actuated de­ grees and computational autonomy, critical com­ ponents for legged robotics applications. A compliant hexapod model, used

  20. An analytical model of axial compressor off-design performance

    SciTech Connect (OSTI)

    Camp, T.R.; Horlock, J.H. . Whittle Lab.)

    1994-07-01

    An analysis is presented of the off-design performance of multistage axial-flow compressors. It is based on an analytical solution, valid for small perturbations in operating conditions from the design point, and provides an insight into the effects of choices made during the compressor design process on performance and off-design stage matching. It is shown that the mean design value of stage loading coefficient ([psi] = [Delta]h[sub 0]/U[sup 2]) has a dominant effect on off-design performance, whereas the stage-wise distribution of stage loading coefficient and the design value of flow coefficient have little influence. The powerful effects of variable stator vanes on stage-matching are also demonstrated and these results are shown to agree well with previous work. The slope of the working line of a gas turbine engine, overlaid on overall compressor characteristics, is shown to have a strong effect on the off-design stage-matching through the compressor. The model is also used to analyze design changes to the compressor geometry and to show how errors in estimates of annulus blockage, decided during the design process, have less effect on compressor performance than has previously been thought.

  1. Design of Experiments, Model Calibration and Data Assimilation

    SciTech Connect (OSTI)

    Williams, Brian J.

    2014-07-30

    This presentation provides an overview of emulation, calibration and experiment design for computer experiments. Emulation refers to building a statistical surrogate from a carefully selected and limited set of model runs to predict unsampled outputs. The standard kriging approach to emulation of complex computer models is presented. Calibration refers to the process of probabilistically constraining uncertain physics/engineering model inputs to be consistent with observed experimental data. An initial probability distribution for these parameters is updated using the experimental information. Markov chain Monte Carlo (MCMC) algorithms are often used to sample the calibrated parameter distribution. Several MCMC algorithms commonly employed in practice are presented, along with a popular diagnostic for evaluating chain behavior. Space-filling approaches to experiment design for selecting model runs to build effective emulators are discussed, including Latin Hypercube Design and extensions based on orthogonal array skeleton designs and imposed symmetry requirements. Optimization criteria that further enforce space-filling, possibly in projections of the input space, are mentioned. Designs to screen for important input variations are summarized and used for variable selection in a nuclear fuels performance application. This is followed by illustration of sequential experiment design strategies for optimization, global prediction, and rare event inference.

  2. PHARAO Laser Source Flight Model: Design and Performances

    E-Print Network [OSTI]

    Lévèque, Thomas; Esnault, François-Xavier; Delaroche, Christophe; Massonnet, Didier; Grosjean, Olivier; Buffe, Fabrice; Torresi, Patrizia; Bomer, Thierry; Pichon, Alexandre; Béraud, Pascal; Lelay, Jean-Pierre; Thomin, Stéphane; Laurent, Philippe

    2015-01-01

    In this paper, we describe the design and the main performances of the PHARAO laser source flight model. PHARAO is a laser cooled cesium clock specially designed for operation in space and the laser source is one of the main sub-systems. The flight model presented in this work is the first remote-controlled laser system designed for spaceborne cold atom manipulation. The main challenges arise from mechanical compatibility with space constraints, which impose a high level of compactness, a low electric power consumption, a wide range of operating temperature and a vacuum environment. We describe the main functions of the laser source and give an overview of the main technologies developed for this instrument. We present some results of the qualification process. The characteristics of the laser source flight model, and their impact on the clock performances, have been verified in operational conditions.

  3. Multi-Scale Modeling Tools to Enable Manufacturing-Informed Design...

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

    Multi-Scale Modeling Tools to Enable Manufacturing-Informed Design Multi-Scale Modeling Tools to Enable Manufacturing-Informed Design Third Wave Systems, Inc. - Minneapolis, MN...

  4. ADVANCED WUFI COMPUTER MODELING WORKSHOP FOR WALL DESIGN AND PERFORMANCE

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    TRANSFER IN BUILDING ENVELOPES) Napa, CA, January 30 - February 1, 2012 WUFI/ORNL1 Program made availableADVANCED WUFI COMPUTER MODELING WORKSHOP FOR WALL DESIGN AND PERFORMANCE (HEAT AND MOISTURE-Institut für Bauphysik (IBP) and co-sponsored by the National Institute of Building Sciences (NIBS)/ Building

  5. Dynamic Modelling and Control Design of Pre-combustion Power

    E-Print Network [OSTI]

    Foss, Bjarne A.

    principles. The pre- combustion gas power cycle plants consist of reformers and separation units, com and control design of two pre-combustion power cycles, i.e., a hydro- gen membrane reformer (HMR) based power- pressors, gas and steam turbines and a heat recovery system. Analysis of dynamic models at an early stage

  6. Design, Simulation and Modeling of Insulated Gate Bipolar Transistor 

    E-Print Network [OSTI]

    Gupta, Kaustubh

    2013-07-09

    The market for Insulated Gate Bipolar Transistor (IGBT) is growing and there is a need for techniques to improve the design, modeling and simulation of IGBT. In this thesis, we first developed a new method to optimize the layout and dimensions...

  7. Model for Sustainable Urban Design With Expanded Sections on Distributed Energy Resources, February 2004

    Office of Energy Efficiency and Renewable Energy (EERE)

    Document describing a model design for urban development and redevelopment that will reduce urban energy consumption

  8. A Design and Implementation of the Extended Andorra Model

    E-Print Network [OSTI]

    Lopes, Ricardo; Silva, Fernando

    2011-01-01

    Logic programming provides a high-level view of programming, giving implementers a vast latitude into what techniques to explore to achieve the best performance for logic programs. Towards obtaining maximum performance, one of the holy grails of logic programming has been to design computational models that could be executed efficiently and that would allow both for a reduction of the search space and for exploiting all the available parallelism in the application. These goals have motivated the design of the Extended Andorra Model, a model where goals that do not constrain non-deterministic goals can execute first. In this work we present and evaluate the Basic design for Extended Andorra Model (BEAM), a system that builds upon David H. D. Warren's original EAM with Implicit Control. We provide a complete description and implementation of the BEAM System as a set of rewrite and control rules. We present the major data structures and execution algorithms that are required for efficient execution, and evaluate...

  9. The Evolutionary Design Model (EDM) for the design of complex engineered systems : Masdar City as a case study

    E-Print Network [OSTI]

    Alfaris, Anas (Anas Faris)

    2009-01-01

    This thesis develops a framework for constructing an Evolutionary Design Model (EDM) that would enhance the design of complex systems through an efficient process. The framework proposed is generic and suggests a group of ...

  10. A design tool architecture for the rapid evaluation of product design tradeoffs in an Inernet-based system modeling environment

    E-Print Network [OSTI]

    Wronski, Jacob (Jacob Andrzej)

    2005-01-01

    This thesis presents a computer-aided design tool for the rapid evaluation of design tradeoffs in an integrated product modeling environment. The goal of this work is to provide product development organizations with better ...

  11. Heteropolymer freezing and design: Towards physical models of protein folding

    SciTech Connect (OSTI)

    Pande, Vijay S. [Chemistry Department, Stanford University, Stanford, California 94305-5080 (United States)] [Chemistry Department, Stanford University, Stanford, California 94305-5080 (United States); Grosberg, Alexander Yu. [Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455 (United States)] [Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455 (United States); Tanaka, Toyoichi [Department of Physics and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)] [Department of Physics and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

    2000-01-01

    Protein folding has become one of the most actively studied problems in modern molecular biophysics. Approaches to the problem combine ideas from the physics of disordered systems, polymer physics, and molecular biology. Much can be learned from the statistical properties of model heteropolymers, the chain molecules having different monomers in irregular sequences. Even in highly evolved proteins, there is a strong random element in the sequences, which gives rise to a statistical ensemble of sequences for a given folded shape. Simple analytic models give rise to phase transitions between random, glassy, and folded states, depending on the temperature T and the design temperature T{sup des} of the ensemble of sequences. Besides considering the analytic results obtainable in a random-energy model and in the Flory mean-field model of polymers, the article reports on confirming numerical simulations. (c) 2000 The American Physical Society.

  12. Costs Models in Design and Manufacturing of Sand Casting Products

    E-Print Network [OSTI]

    Perry, Nicolas; Bernard, Alain

    2010-01-01

    In the early phases of the product life cycle, the costs controls became a major decision tool in the competitiveness of the companies due to the world competition. After defining the problems related to this control difficulties, we will present an approach using a concept of cost entity related to the design and realization activities of the product. We will try to apply this approach to the fields of the sand casting foundry. This work will highlight the enterprise modelling difficulties (limits of a global cost modelling) and some specifics limitations of the tool used for this development. Finally we will discuss on the limits of a generic approach.

  13. Costs Models in Design and Manufacturing of Sand Casting Products

    E-Print Network [OSTI]

    Nicolas Perry; Magali Mauchand; Alain Bernard

    2010-11-26

    In the early phases of the product life cycle, the costs controls became a major decision tool in the competitiveness of the companies due to the world competition. After defining the problems related to this control difficulties, we will present an approach using a concept of cost entity related to the design and realization activities of the product. We will try to apply this approach to the fields of the sand casting foundry. This work will highlight the enterprise modelling difficulties (limits of a global cost modelling) and some specifics limitations of the tool used for this development. Finally we will discuss on the limits of a generic approach.

  14. Dynamic Modeling in Solid-Oxide Fuel Cells Controller Design

    SciTech Connect (OSTI)

    Lu, Ning; Li, Qinghe; Sun, Xin; Khaleel, Mohammad A.

    2007-06-28

    In this paper, a dynamic model of the solid-oxide fuel cell (SOFC) power unit is developed for the purpose of designing a controller to regulate fuel flow rate, fuel temperature, air flow rate, and air temperature to maintain the SOFC stack temperature, fuel utilization rate, and voltage within operation limits. A lumped model is used to consider the thermal dynamics and the electro-chemial dynamics inside an SOFC power unit. The fluid dynamics at the fuel and air inlets are considered by using the in-flow ramp-rates.

  15. SDU 6 MODELING STUDY TO SUPPORT DESIGN DEVELOPMENT

    SciTech Connect (OSTI)

    Smith, F.

    2012-05-02

    In response to Technical Task Request (TTR) HLW-SSF-TTR-2012-0017 (1), SRNL performed modeling studies to evaluate alternative design features for the 32 million gallon Saltstone Disposal Unit (SDU) referred to as SDU 6. This initial modeling study was intended to assess the performance of major components of the structure that are most significant to the PA. Information provided by the modeling will support the development of a SDU 6 Preliminary Design Model and Recommendation Report to be written by SRR Closure and Waste Disposal Authority. Key inputs and assumptions for the modeling were provided to SRNL in SRR-SPT-2011-00113 (2). A table reiterates the base case and four sensitivity case studies requested in this reference. In general, as shown in Table 4, when compared to Vault 2 Case A, the Base Case SDU 6 design produced higher peak fluxes to the water table during the 10,000 year period of analysis but lower peak fluxes within a 15,000 to 20,000 time frame. SDU 6 will contain approximately ten times the inventory of a single Vault 2 and the SDU 6 footprint is comparable to that of a group of four Vault 2 disposal units. Therefore, the radionuclide flux from SDU 6 and that from a single Vault 2 are not directly comparable. A more direct comparison would be to compare the maximum dose obtained at the 100 m boundary from the seven SDU's that will replace the 64 FDC's analyzed in the 2009 PA. This analysis will be performed in the next set of calculations planned for SDU design evaluation. Aquifer transport and dose calculations were not intended to be part of this initial scoping study. However, results from this study do indicate that replacement of the FDC design with SDU would not yield significantly higher peak doses. If the thickness of the SDU 6 floor is increased, peak doses would not occur during the 10,000 year period of analysis.

  16. Design theoretic analysis of three system modeling frameworks.

    SciTech Connect (OSTI)

    McDonald, Michael James

    2007-05-01

    This paper analyzes three simulation architectures from the context of modeling scalability to address System of System (SoS) and Complex System problems. The paper first provides an overview of the SoS problem domain and reviews past work in analyzing model and general system complexity issues. It then identifies and explores the issues of vertical and horizontal integration as well as coupling and hierarchical decomposition as the system characteristics and metrics against which the tools are evaluated. In addition, it applies Nam Suh's Axiomatic Design theory as a construct for understanding coupling and its relationship to system feasibility. Next it describes the application of MATLAB, Swarm, and Umbra (three modeling and simulation approaches) to modeling swarms of Unmanned Flying Vehicle (UAV) agents in relation to the chosen characteristics and metrics. Finally, it draws general conclusions for analyzing model architectures that go beyond those analyzed. In particular, it identifies decomposition along phenomena of interaction and modular system composition as enabling features for modeling large heterogeneous complex systems.

  17. Impact of utilizing 3D digital urban models on the design content of urban design plans in US cities 

    E-Print Network [OSTI]

    Al-Douri, Firas A. Salman

    2006-10-30

    on the quality of the design product and consequently hesitation about the appropriate methods of their usage. These suggest a need for research into how the usage of digital models can affect the extent with which urban design plans cover the essential design...

  18. Engineering Design, Construction, Operation and Analysis of the 2007 Texas A&M University Solar Decathlon House 

    E-Print Network [OSTI]

    Ramirez, E. J.

    2008-01-01

    Official Observer Installing a Temperature Sensor Inside the TAMU Dishwasher ....................................................................................................................... 110 Figure 119: TAMU Team Member Removing Cold Water from...

  19. Engineering Design, Construction, Operation and Analysis of the 2007 Texas A&M University Solar Decathlon House 

    E-Print Network [OSTI]

    Ramirez, Eduardo

    2008-06-10

    Official Observer Installing a Temperature Sensor Inside the TAMU Dishwasher ....................................................................................................................... 110 Figure 119: TAMU Team Member Removing Cold Water from...

  20. Process-Based Cost Modeling to Support Target Value Design

    E-Print Network [OSTI]

    Nguyen, Hung Viet

    2010-01-01

    J. (2008). “Integration Design and Construction ThroughMarket- Driven Product Design, New York, Marcel Dekker, Inc.Contractor Knowledge to Early Design. ” Proceedings of the

  1. Magnetic and Mechanical Analysis of the HQ Model Quadrupole Designs for LARP

    E-Print Network [OSTI]

    Felice, Helene

    2008-01-01

    on the magnetic and mechanical design of the HQ models willIII. M ECHANICAL A NALYSIS A. Mechanical design Within LARP,two different mechanical design concepts are under study

  2. Abstract --Most logistics network design models assume exogenous customer demand that is independent of the service

    E-Print Network [OSTI]

    Graves, Stephen C.

    Abstract -- Most logistics network design models assume exogenous customer demand for the network design decision making process. Index Terms -- Logistics Network Design, Demand Classes, Benefits. In most logistics network design models, the customer demand is exogenous and defined as a uniform

  3. Modeling capsid self-assembly: Design and analysis

    E-Print Network [OSTI]

    D. C. Rapaport

    2010-06-22

    A series of simulations aimed at elucidating the self-assembly dynamics of spherical virus capsids is described. This little-understood phenomenon is a fascinating example of the complex processes that occur in the simplest of organisms. The fact that different viruses adopt similar structural forms is an indication of a common underlying design, motivating the use of simplified, low-resolution models in exploring the assembly process. Several versions of a molecular dynamics approach are described. Polyhedral shells of different sizes are involved, the assembly pathways are either irreversible or reversible, and an explicit solvent is optionally included. Model design, simulation methodology and analysis techniques are discussed. The analysis focuses on the growth pathways and the nature of the intermediate states, properties that are hard to access experimentally. Among the key observations are that efficient growth proceeds by means of a cascade of highly reversible stages, and that while there are a large variety of possible partial assemblies, only a relatively small number of strongly bonded configurations are actually encountered.

  4. Robust design and model validation of nonlinear compliant micromechanisms.

    SciTech Connect (OSTI)

    Howell, Larry L. (Brigham Young University, Provo, UT); Baker, Michael Sean; Wittwer, Jonathan W. (Brigham Young University, Provo, UT)

    2005-02-01

    Although the use of compliance or elastic flexibility in microelectromechanical systems (MEMS) helps eliminate friction, wear, and backlash, compliant MEMS are known to be sensitive to variations in material properties and feature geometry, resulting in large uncertainties in performance. This paper proposes an approach for design stage uncertainty analysis, model validation, and robust optimization of nonlinear MEMS to account for critical process uncertainties including residual stress, layer thicknesses, edge bias, and material stiffness. A fully compliant bistable micromechanism (FCBM) is used as an example, demonstrating that the approach can be used to handle complex devices involving nonlinear finite element models. The general shape of the force-displacement curve is validated by comparing the uncertainty predictions to measurements obtained from in situ force gauges. A robust design is presented, where simulations show that the estimated force variation at the point of interest may be reduced from {+-}47 {micro}N to {+-}3 {micro}N. The reduced sensitivity to process variations is experimentally validated by measuring the second stable position at multiple locations on a wafer.

  5. Improving efficiency of a vehicle HVAC system with comfort modeling, zonal design, and thermoelectric devices

    Office of Energy Efficiency and Renewable Energy (EERE)

    Discusses progress on thermal comfort modeling and detailed design, fabrication, and component/system-level testing of TE architecture

  6. Structural Design Composition for C++ Hardware Models Frederic Doucet, Vivek Sinha, Rajesh Gupta

    E-Print Network [OSTI]

    Gupta, Rajesh

    Structural Design Composition for C++ Hardware Models Frederic Doucet, Vivek Sinha, Rajesh Gupta design to specify these structural concerns. 1. Introduction High level modeling using C/C++ models [11,vsinha,rguptag@ics.uci.edu Abstract This paper addresses the modeling of layout structure in high level C++ models. Researchers agree

  7. Industrial motivation for interactive shape modeling: a case study in conceptual automotive design

    E-Print Network [OSTI]

    Toronto, University of

    Industrial motivation for interactive shape modeling: a case study in conceptual automotive design illus- trated within the space of conceptual automotive design. Automo- tive design provides a unique but automotive designers almost exclusively work with sketches, clay and other traditional media. Design

  8. Model Reduction for Indoor-Air Behavior in Control Design for Energy-Efficient Buildings

    E-Print Network [OSTI]

    Gugercin, Serkan

    Model Reduction for Indoor-Air Behavior in Control Design for Energy-Efficient Buildings Jeff models for the indoor-air environment in control design for energy efficient buildings. In one method by a desire to incorporate models of the indoor-air environment in the design of energy efficient buildings

  9. Structural Informatics, Modeling, and Design with an Open-Source Molecular Software Library (MSL)

    E-Print Network [OSTI]

    Senes, Alessandro

    Structural Informatics, Modeling, and Design with an Open-Source Molecular Software Library (MSL for the design, modeling, and analysis of macromolecules. Among the main features supported by the library coordinates (for modeling) and multiple amino acid identities at the same backbone position (for design

  10. CMP Modeling as a part of Design for Manufacturing

    E-Print Network [OSTI]

    Tripathi, Shantanu; Monvoisin, Adrien; Dornfeld, David; Doyle, F M

    2007-01-01

    low-K materials, design-process optimization, understandingmaterials and new requirements; lack of fundamental physical data & mechanisms; and lack of interconnect/architecture design optimization

  11. CMP Modeling as a part of Design for Manufacturing

    E-Print Network [OSTI]

    Tripathi, Shantanu; Monvoisin, Adrien; Dornfeld, David; Doyle, F M

    2007-01-01

    IEEE Trans. Semiconductor Manufacturing, 232 (2002) [4] J.J.a part of Design for Manufacturing Shantanu Tripathi, Adrienenabling Design for Manufacturing (DfM) and Manufacturing

  12. Computational Human Performance Modeling For Alarm System Design

    SciTech Connect (OSTI)

    Jacques Hugo

    2012-07-01

    The introduction of new technologies like adaptive automation systems and advanced alarms processing and presentation techniques in nuclear power plants is already having an impact on the safety and effectiveness of plant operations and also the role of the control room operator. This impact is expected to escalate dramatically as more and more nuclear power utilities embark on upgrade projects in order to extend the lifetime of their plants. One of the most visible impacts in control rooms will be the need to replace aging alarm systems. Because most of these alarm systems use obsolete technologies, the methods, techniques and tools that were used to design the previous generation of alarm system designs are no longer effective and need to be updated. The same applies to the need to analyze and redefine operators’ alarm handling tasks. In the past, methods for analyzing human tasks and workload have relied on crude, paper-based methods that often lacked traceability. New approaches are needed to allow analysts to model and represent the new concepts of alarm operation and human-system interaction. State-of-the-art task simulation tools are now available that offer a cost-effective and efficient method for examining the effect of operator performance in different conditions and operational scenarios. A discrete event simulation system was used by human factors researchers at the Idaho National Laboratory to develop a generic alarm handling model to examine the effect of operator performance with simulated modern alarm system. It allowed analysts to evaluate alarm generation patterns as well as critical task times and human workload predicted by the system.

  13. Initial design for a fish bioenergetics model of Pacific saury coupled to a lower trophic ecosystem model

    E-Print Network [OSTI]

    Initial design for a fish bioenergetics model of Pacific saury coupled to a lower trophic ecosystem-0001, Japan ABSTRACT A fish bioenergetics model coupled with an ecosystem model was developed to reproduce ecosystem model were input to the bioenergetics model of saury as the prey densities. Although certain model

  14. ADAPTIVE MODELLING IN THE DESIGN OF INTERACTIVE DEVICES

    E-Print Network [OSTI]

    Prabhakar, Sattiraju

    are created by adapting old designs. The present work is motivated by two issues in building a computational in evolutionary design often are small, simple, local and routine. But evolutionary design in general includes of the device. But now consider the problem of adapting the design of a waterwheel to harness wind energy

  15. Role of Modeling When Designing for Absolute Energy Use Intensity Requirements in a Design-Build Framework: Preprint

    SciTech Connect (OSTI)

    Hirsch, A.; Pless, S.; Guglielmetti, R.; Torcellini, P. A.; Okada, D.; Antia, P.

    2011-03-01

    The Research Support Facility was designed to use half the energy of an equivalent minimally code-compliant building, and to produce as much renewable energy as it consumes on an annual basis. These energy goals and their substantiation through simulation were explicitly included in the project's fixed firm price design-build contract. The energy model had to be continuously updated during the design process and to match the final building as-built to the greatest degree possible. Computer modeling played a key role throughout the design process and in verifying that the contractual energy goals would be met within the specified budget. The main tool was a whole building energy simulation program. Other models were used to provide more detail or to complement the whole building simulation tool. Results from these specialized models were fed back into the main whole building simulation tool to provide the most accurate possible inputs for annual simulations. This paper will detail the models used in the design process and how they informed important program and design decisions on the path from preliminary design to the completed building.

  16. Introduction Angluin's Learning Approach Learning Design Models Dedicated Tool: Smyle Conclusion Replaying Play-In Play-Out

    E-Print Network [OSTI]

    Ábrahám, Erika

    Introduction Angluin's Learning Approach Learning Design Models Dedicated Tool: Smyle Conclusion Approach Learning Design Models Dedicated Tool: Smyle Conclusion Outline 1 Introduction 2 Angluin's Learning Approach 3 Learning Design Models 4 Dedicated Tool: Smyle 5 Conclusion #12;Introduction Angluin

  17. CHIP House Takes Design to Different Heights (Literally)

    Broader source: Energy.gov [DOE]

    Check out the SCI-Arc/Caltech 2011 Solar Decathlon team's house to find out more about their net-zero energy use home -- the CHIP House.

  18. Solar Decathlon 2013: Raising More Than Just Walls | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4Energy Smooth BromeBuildings |SolarDesigning theMeet:

  19. Solar Decathlon Teams Working Around the Clock to Assemble Homes For

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4Energy Smooth BromeBuildings |SolarDesigningWake

  20. Background and Motivation Literature The Model Examples Summary Sustainable Supply Chain Network Design

    E-Print Network [OSTI]

    Nagurney, Anna

    Background and Motivation Literature The Model Examples Summary Sustainable Supply Chain Network and Motivation Literature The Model Examples Summary Acknowledgments The first author's research was supported Sustainable Supply Chain Network Design #12;Background and Motivation Literature The Model Examples Summary

  1. Integrated Modeling, Finite-Element Analysis, and Engineering Design for Thin-Shell

    E-Print Network [OSTI]

    Schroeder, Peter

    Integrated Modeling, Finite-Element Analysis, and Engineering Design for Thin-Shell Structures transfer between the geometric design and finite-element anal- ysis tools. No cumbersome remodeling.S.A. Abstract Many engineering design applications require geometric modeling and mechanical simulation of thin

  2. ECE 587 Hardware/Software Co-Design Lecture 09 Software Processor Modeling I

    E-Print Network [OSTI]

    Wang, Jia

    ECE 587 ­ Hardware/Software Co-Design Lecture 09 Software Processor Modeling I Professor Jia Wang ­ Hardware/Software Co-Design Spring 2015 1/22 #12;Reading Assignment This lecture: 3.4 Next lecture: 3.4 ECE 587 ­ Hardware/Software Co-Design Spring 2015 2/22 #12;Outline Software Processor Modeling Application

  3. A Note on Bayesian Design for the Normal Linear Model with Unknown Error Variance

    E-Print Network [OSTI]

    the assumption of known variance. The insensitivity of specific design criteria to prior assumptions thought. Some Key Words: Bayesian design criteria; Design for prediction; Linear model; Expected Utility known coincides with the one that minimizes OE(X) for oe 2 unknown. A number of optimal design criteria

  4. An Enterprise Decision Model for Optimal Vehicle Design and Technology Valuation

    E-Print Network [OSTI]

    Papalambros, Panos

    engineering simulation to provide a preliminary understanding of the technology's market and design potentialAn Enterprise Decision Model for Optimal Vehicle Design and Technology Valuation by Adam B. Cooper for Optimal Vehicle Design and Technology Valuation by Adam B. Cooper Chair: Panos Y. Papalambros Design

  5. Hybrid Powertrain Design Using a Domain-Specific Modeling Environment

    E-Print Network [OSTI]

    Gray, Jeffrey G.

    of design tools that are used in the electronics industry. Widely accepted automotive powertrain design industry has demonstrated that similar tools in the automotive domain still lack the power, sophistication--State of the art design tools in automotive engineering still lack the power, sophistication, and automation

  6. Design, modeling and control of a hybrid machine system

    E-Print Network [OSTI]

    Zhang, WJ "Chris"

    .J. Zhang). Mechatronics 14 (2004) 1197­1217 #12;Keywords: Hybrid machine; Five-bar mechanism; Design.S. Guo c a Advanced Engineering Design Laboratory, Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada b School of Mechanical and Production Engineering

  7. Improvements to building energy usage modeling during early design stages and retrofits

    E-Print Network [OSTI]

    Mandelbaum, Andrew (Andrew Joseph)

    2014-01-01

    A variety of improvements to the MIT Design Advisor, a whole-building energy usage modeling tool intended for use during early design stages, are investigated. These include changes to the thermal mass temperature distribution ...

  8. A Computational Market Model for Distributed Configuration Design Michael P. Wellman

    E-Print Network [OSTI]

    Wellman, Michael P.

    economies" constitutes the market solution to the original problem. After defining the configuration design. Consider a hyper-simplified scenario in aircraft design. (We choose this not as a serious exemplar ¡ ¢ £ £ ¤ ¢ ¥ ¦ § ¨ © ¨ A Computational Market Model for Distributed Configuration

  9. Design and manufacture of an icosahedral virus model for educational use

    E-Print Network [OSTI]

    Stach, Laurie A. (Laurie Anna)

    2005-01-01

    A model of an icosahedral virus was designed and manufactured. Much consideration was given to the design of different aspects of the part. though there were many uncertainties about some parameters that disallowed precise ...

  10. Design of a test apparatus to study a proposed dynamic tissue puncture model

    E-Print Network [OSTI]

    Inman, Kathleen Marie

    2013-01-01

    Two test apparatuses were designed, built, and evaluated in order to study a proposed dynamic tissue puncture model. The test apparatuses were designed to improve existing experiments used previously to experimentally ...

  11. Exascale Co-design for Modeling Materials in Extreme Environments

    SciTech Connect (OSTI)

    Germann, Timothy C.

    2014-07-08

    Computational materials science has provided great insight into the response of materials under extreme conditions that are difficult to probe experimentally. For example, shock-induced plasticity and phase transformation processes in single-crystal and nanocrystalline metals have been widely studied via large-scale molecular dynamics simulations, and many of these predictions are beginning to be tested at advanced 4th generation light sources such as the Advanced Photon Source (APS) and Linac Coherent Light Source (LCLS). I will describe our simulation predictions and their recent verification at LCLS, outstanding challenges in modeling the response of materials to extreme mechanical and radiation environments, and our efforts to tackle these as part of the multi-institutional, multi-disciplinary Exascale Co-design Center for Materials in Extreme Environments (ExMatEx). ExMatEx has initiated an early and deep collaboration between domain (computational materials) scientists, applied mathematicians, computer scientists, and hardware architects, in order to establish the relationships between algorithms, software stacks, and architectures needed to enable exascale-ready materials science application codes within the next decade. We anticipate that we will be able to exploit hierarchical, heterogeneous architectures to achieve more realistic large-scale simulations with adaptive physics refinement, and are using tractable application scale-bridging proxy application testbeds to assess new approaches and requirements. Such current scale-bridging strategies accumulate (or recompute) a distributed response database from fine-scale calculations, in a top-down rather than bottom-up multiscale approach.

  12. A Nonlinear Spring Model of Hydraulic Actuator for Passive Controller Design in Bilateral Tele-operation

    E-Print Network [OSTI]

    Li, Perry Y.

    this model, an energy based controller for passive bilateral tele-operation of hydraulic actuator is designedA Nonlinear Spring Model of Hydraulic Actuator for Passive Controller Design in Bilateral Tele of hydraulic medium are used to develop a nonlinear spring-like model for a hydraulic actuator. Using

  13. 1 Imbedded Heat Pipe Prototype Modelling, Design, and Construction for Particle Ac-

    E-Print Network [OSTI]

    Cinabro, David

    1 Imbedded Heat Pipe Prototype Modelling, Design, and Construction for Particle Ac- celerator for predicting heat pipe performance has been generated and a design based on the results of that model has been implemented. A prototype heat pipe is under construction to test the validity of the model. The prototype

  14. Comparing Model-based and Design-based Structural Equation Modeling Approaches in Analyzing Complex Survey Data 

    E-Print Network [OSTI]

    Wu, Jiun-Yu

    2011-10-21

    researcher can either use the ad-hoc robust sandwich standard error estimators to correct the standard error estimates (Design-based approach) or perform multilevel analysis to model the multilevel data structure (Model-based approach) to analyze dependent...

  15. Design and Modeling of an Asynchronous Optical Packet Switch for DiffServ Traffic

    E-Print Network [OSTI]

    Vanderbauwhede, W.

    Vanderbauwhede,W. Harle,D.A. Proceedings of ONDM 2004, 8th IFIP Working Conference on Optical Network Design and Modelling, Gent, Belgium, Feb 2004

  16. Nanotechnology Nanotechnology comprises measurement, design, modeling and fabrication of materials and systems at the atomic scale.

    E-Print Network [OSTI]

    Glowinski, Roland

    Nanotechnology Nanotechnology comprises measurement, design, modeling and fabrication of materials are able to customize their education by specializing in areas such as nanotechnology, computational

  17. Multi-Scale Multi-Dimensional Model for Better Cell Design and Management (Presentation)

    SciTech Connect (OSTI)

    Kim, G.-H.; Smith, K.

    2008-09-01

    Describes NREL's R&D to develop a multi-scale model to assist in designing better, more reliable lithium-ion battery cells for advanced vehicles.

  18. Models Move Vehicle Design Forward | Department of Energy

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

    an entire vehicle. For batteries, it's essential for researchers to be able to predict a specific design's electrochemical and thermal (heat) reactions before they build it. In...

  19. Hierarchical Modeling for Population-Based Heat Exchanger Design

    E-Print Network [OSTI]

    Geb, David

    2013-01-01

    Characteristics of the Stirling Engine Regenerator in anapproach to the design of Stirling engine regenerator matrixFoil Regenerator for Stirling Engines." [48] Ibrahim, M. ,

  20. Process-Based Cost Modeling to Support Target Value Design

    E-Print Network [OSTI]

    Nguyen, Hung Viet

    2010-01-01

    and waste that prevail in construction processes, especiallywaste, and maximize efficiency through all phases of design, fabrication, and construction” (and wastes which are inherent in construction processes,

  1. CMP Modeling as a part of Design for Manufacturing

    E-Print Network [OSTI]

    Shantanu Tripathi; Adrien Monvoisin; Fiona Doyle; Dornfeld, David

    2007-01-01

    and the Laboratory for Manufacturing and Sustainability (IEEE Trans. Semiconductor Manufacturing, 232 (2002) [4] J.J.a part of Design for Manufacturing Shantanu Tripathi, Adrien

  2. Efficient numerical algorithms for surface formulations of mathematical models for biomolecule analysis and design

    E-Print Network [OSTI]

    Bardhan, Jaydeep Porter, 1978-

    2006-01-01

    This thesis presents a set of numerical techniques that extend and improve computational modeling approaches for biomolecule analysis and design. The presented research focuses on surface formulations of modeling problems ...

  3. Development and Validation of a Computer Model for Energy-Efficient Shaded Fenestration Design 

    E-Print Network [OSTI]

    Oh, Kie Whan

    2000-01-01

    transfer through an unshaded window at any orientation. A computerized simulation model, called the Shaded Fenestration Design (SFD) model, was developed that is capable of calculating the amount of solar radiation for a clear day as well as calculating...

  4. Bayesian Design for the Normal Linear Model with Unknown Error Variance

    E-Print Network [OSTI]

    of specific design criteria to specific prior assumptions on the variance has been demonstrated, but a general, 1985; Pilz, 1991) defined Bayesian optimal design criteria as functions OE(X) of the posteriorBayesian Design for the Normal Linear Model with Unknown Error Variance Isabella Verdinelli

  5. Modeling Uncertainty and its Implications to Design-to-Criteria Thomas A. Wagner Anita Raja

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Modeling Uncertainty and its Implications to Design-to-Criteria Scheduling Thomas A. Wagner Anita to be made in real-time making the off-line policy computation- ally infeasible in open environments. Design-to-Criteria and subtasks. Recent advances in Design-to-Criteria include the addition of uncer- tainty to the TÆMS

  6. ECE 587 Hardware/Software Co-Design Lecture 10 Software Processor Modeling II

    E-Print Network [OSTI]

    Wang, Jia

    ECE 587 ­ Hardware/Software Co-Design Lecture 10 Software Processor Modeling II Professor Jia Wang ­ Hardware/Software Co-Design Spring 2015 1/20 #12;Reading Assignment This lecture: 3.4 Next lecture: 3.5 ECE 587 ­ Hardware/Software Co-Design Spring 2015 2/20 #12;Outline Overview Hardware Abstraction Layer

  7. Volumetric Illustration: Designing 3D Models with Internal Textures Shigeru Owada

    E-Print Network [OSTI]

    Nielsen, Frank

    Volumetric Illustration: Designing 3D Models with Internal Textures Shigeru Owada Frank Nielsen This paper presents an interactive system for designing and browsing volumetric illustrations. Volumetric, instead of sampling from a complete 3D RGB volumetric representation directly. This simplifies the design

  8. Evaluation of Functional Data Models for Database Design and Use 

    E-Print Network [OSTI]

    Kulkarni, Krishnarao Gururao

    1983-01-01

    The problems of design, operation, and maintenance of databases using the three most popular database management systems (Hierarchical, CQDASYL/DBTG, and Relational) are well known. Users wishing to use these systems ...

  9. Design and modeling of carbon nanotube-based compliant mechanisms

    E-Print Network [OSTI]

    DiBiasio, Christopher M. (Christopher Michael)

    2007-01-01

    The objective of this research is to generate the knowledge required to adapt macro- and microscale compliant mechanism theory to design carbon nanotube-based nano-scale compliant mechanisms. Molecular simulations of a ...

  10. Applications of Computer Modelling to Fire Safety Design 

    E-Print Network [OSTI]

    Torero, Jose L; Steinhaus, Thomas

    Tools in support of fire safety engineering design have proliferated in the last few years due to the increased performance of computers. These tools are currently being used in a generalized manner in areas such as egress, ...

  11. Incorporating Vehicle Emission Models into the Highway Design Process 

    E-Print Network [OSTI]

    Ko, Myung-Hoon

    2012-02-14

    ?. ........................................................................................... 80 xii Page Figure 5.6 EMFs of fuel consumption and emissions by design categories ........... 83 Figure 5.7 Fuel consumption and emissions by K on vertical curves .................... 87 Figure 5.8 Fuel consumption... Figure 7.1 US 101 route evaluated with real geometric data ................................. 111 Figure 7.2 EMFs from actual vertical grades selected relative to the hypothetical condition of the good design...

  12. System Level Design Using the SystemC Modeling Platform 1

    E-Print Network [OSTI]

    Ould Ahmedou, Mohameden

    the correctness of such a specification. These drawbacks have driven many system, hardware, and software designers of the initiative, which enables, promotes, and accelerates system-level intellectual property (IP) model exchangeSystem Level Design Using the SystemC Modeling Platform 1 1. Introduction1 As system complexity

  13. Mooring Line Modelling and Design Optimization of Floating Offshore Wind Turbines

    E-Print Network [OSTI]

    Victoria, University of

    Mooring Line Modelling and Design Optimization of Floating Offshore Wind Turbines by Matthew Thomas Mooring Line Modelling and Design Optimization of Floating Offshore Wind Turbines by Matthew Thomas Jair was coupled to the floating wind turbine simulator FAST. The results of the comparison study indicate the need

  14. Solar Decathlon Presentation

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing Tool FitsProjectDataSecretaryDepartment of EnergyDepartment»New Teams!Opening Solar

  15. The development of an image/threshold database for designing and testing human vision models.

    E-Print Network [OSTI]

    Klein, Stanley

    The development of an image/threshold database for designing and testing human vision models. Thom for all modelers to use in HVS model development. The group may also provide a threshold database modeling, image database, psychophysics, HVS, image compression 1. INTRODUCTION Digital information

  16. Designability, thermodynamic stability, and dynamics in protein folding: A lattice model study

    E-Print Network [OSTI]

    Levine, Alex J.

    Designability, thermodynamic stability, and dynamics in protein folding: A lattice model study Re October 1998 In the framework of a lattice-model study of protein folding, we investigate the interplay model. Lattice models have been widely used in the study of protein folding dynamics.2­8 The main

  17. Automated Analysis of Software Designs with Graphic Quality Models Department of Computer Science

    E-Print Network [OSTI]

    Zhu, Hong

    Automated Analysis of Software Designs with Graphic Quality Models QIAN ZHANG Department@brookes.ac.uk Abstract: Software quality models play a significant role in software quality assurance. Based on our previous work on graphic modelling of software quality, this paper extends the quality modelling language

  18. WUFI COMPUTER MODELING WORKSHOP FOR WALL DESIGN AND PERFORMANCE

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    the transient thermal and hygric processes occurring in the envelope. This film is ideal for gaining insights of Energy This symposium and workshop is co-sponsored by the U.S. Department of Energy (DOE) through Oak Annual Air Barrier Association Conference and Trade Show. Strategies for Energy Efficient Building Design

  19. Computer Aided Design and Modeling of High Frequency Magnetic Components *

    E-Print Network [OSTI]

    Noé, Reinhold

    - cy multiwinding transformers and inductors in any power electronics applications. Depending accuracy, see [l]and [2] as examples. Therefore, e.g. in [3] a high frequency transformer design and loss simulators like SPICE or SABER are available on the market. However, it is well known, that the accuracy

  20. Conceptual design of an integrated technology model for carbon policy assessment.

    SciTech Connect (OSTI)

    Backus, George A.; Dimotakes, Paul E.

    2011-01-01

    This report describes the conceptual design of a technology choice model for understanding strategies to reduce carbon intensity in the electricity sector. The report considers the major modeling issues affecting technology policy assessment and defines an implementable model construct. Further, the report delineates the basis causal structure of such a model and attempts to establish the technical/algorithmic viability of pursuing model development along with the associated analyses.

  1. Enabling rapid iterative model design within the laboratory environment 

    E-Print Network [OSTI]

    Clayton, Thomas F.

    2009-01-01

    This thesis presents a proof of concept study for the better integration of the electrophysiological and modelling aspects of neuroscience. Members of these two sub-disciplines collaborate regularly, but due to differing ...

  2. Model to aid the design of composite landfill liners 

    E-Print Network [OSTI]

    Mohammed, Kifayathulla

    1993-01-01

    containment facilities. A numerical simulation model with a user-friendly interface was developed to study the transport of hazardous chemicals through a composite liner system consisting of a combination of flexible membrane liners, compacted clay liners...

  3. Equalized on-chip interconnect : modeling, analysis, and design

    E-Print Network [OSTI]

    Kim, Byungsub, 1978-

    2010-01-01

    This thesis work explores the use of equalization techniques to improve throughput and reduce power consumption of on-chip interconnect. A theoretical model for an equalized on-chip interconnect is first suggested to provide ...

  4. Adaptive design of cross-organizational business processes using a model-driven architecture

    E-Print Network [OSTI]

    Bauer, Bernhard

    Adaptive design of cross-organizational business processes using a model-driven architecture, methodologies, methods, and infrastructures to support end-to-end modeling of cross-organizational business: First, we present a conceptual architecture for modeling collaborative business processes based

  5. A Model-driven Approach to Designing Cross-enterprise Business Processes

    E-Print Network [OSTI]

    Bauer, Bernhard

    A Model-driven Approach to Designing Cross- enterprise Business Processes Bernhard Bauer1, Jörg P.p.mueller@siemens.com Abstract. Modeling and managing business processes that span multiple or- ganizations involves new for interoperability. In this paper, we present an approach to modeling cross-enterprise business processes based

  6. An annotated summary of the Information Model Design Procedure (IMDP)

    SciTech Connect (OSTI)

    Becker, S.D.

    1994-05-01

    This presentation documents the essential elements of the IMDP as applied at Sandia National Laboratories/New Mexico. The IMDP is an adaptation of the Natural-Language Information Analysis Methodology (NIAM) of G. M. Nijssen. The underlying purpose of both of these methodologies is to provide a formal, reproducible, and verifiable approach to specifying the information requirements of an information system. The IMDP spans the specification process from initial scoping; through verbalization of problem-domain facts, specification of constraints, and subtype analysis; and finally to application of a formal algorithm for developing a fifth-normal-form relational database design.

  7. Improving Battery Design with Electro-Thermal Modeling

    SciTech Connect (OSTI)

    Bharathan, D.; Pesaran, A.; Vlahinos, A.; Kim, G.-H.

    2005-01-01

    Operating temperature greatly affects the performance and life of batteries in electric and hybrid vehicles. Increased attention is necessary to battery thermal management. Electrochemical models and finite element analysis tools are available for predicting the thermal performance of batteries, but each has limitations. In this study we describe an electro-thermal finite element approach that predicts the thermal performance of a cell or module with realistic geometry. To illustrate the process, we simulated the thermal performance of two generations of Panasonic prismatic nickel-metal-hydride modules used in the Toyota Prius. The model showed why the new generation of Panasonic modules had better thermal performance. Thermal images from two battery modules under constant current discharge indicate that the model predicts the experimental trend reasonably well.

  8. Fuzzy-Based Intelligent Sensors: Modeling, Design, Application

    E-Print Network [OSTI]

    Benoit, Eric; Foulloy, Laurent; 10.1109/ETFA.2001.997712

    2009-01-01

    This paper presents a modeling of intelligent sensors based on a representation of the sensor by services it uses or it proposes, and by its USer Operating Modes (USOMs). This modeling is used for the definition of the reactive layer of distributed agent based intelligent sensors. Our area of interest is the agent-level layer in which the concept of IIC (Intelligent Instrument Cluster) is defined. An application that uses fuzzy-based intelligent sensors is presented in order to illustrate the concepts.

  9. DOE Task 99-4 Extension of Design and Simulation Models 3/24/00 EXTENSION OF EXISTING DESIGN AND SIMULATION MODELS

    E-Print Network [OSTI]

    the first costs of closed-loop ground-source heat pump (GSHP) systems by reducing the necessary size School of Mechanical and Aerospace Engineering Stillwater, OK KEY WORDS design models, ground-source heat pump systems, heat transfer, HVAC, hybrid systems, pavement heating, cooling ponds, surface water-source

  10. Foundation Heat Exchanger Model and Design Tool Development and Validation

    E-Print Network [OSTI]

    . Feasibility of foundation heat exchangers in ground source heat pump systems in the United States. ASHRAE Heat Exchangers for Residential Ground Source Heat Pump Systems - Numerical Modeling and Experimental. Fisher, J. Shonder, P. Im. 2010. Residential Ground Source Heat Pump Systems Utilizing Foundation Heat

  11. Design and Modeling of a Continuous-Time Delta-Sigma Modulator for Biopotential Signal

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    Design and Modeling of a Continuous-Time Delta-Sigma Modulator for Biopotential Signal Acquisition in biopotential signal acquisition. The rest of this paper is organized as follows: Section II presents the CT DSM

  12. Preliminary design capability enhancement via development of rotorcraft operating economics model

    E-Print Network [OSTI]

    Giansiracusa, Michael P

    2010-01-01

    The purpose of this thesis is to develop a means of predicting direct operating cost (DOC) for new commercial rotorcraft early in the design process. This project leverages historical efforts to model operating costs in ...

  13. Modeling, design and analysis of micro-scale Rankine-based systems

    E-Print Network [OSTI]

    Cui, Ling, 1978-

    2004-01-01

    This thesis presents the modeling and design of two major types of micro Rankine-cycle-based machines: a single-Rankine-based power system and a waste-heat-driven cooler. As part of the Massachusetts Institute of Technology ...

  14. Department of Mechanical Engineering "Dependability Aspects of Model-Based Systems Design for Mechatronic

    E-Print Network [OSTI]

    Zakhor, Avideh

    for Mechatronic Systems" Klaus Janschek Technische Universität Dresden, Germany ABSTRACT Mechatronic systems. This makes mechatronic systems increasingly highly critical subject to failures at different technological such as "systems" (in particular mechatronic systems), "models", "design" and "dependability" with special focus

  15. Design of a model propulsor for a boundary layer ingesting aircraft

    E-Print Network [OSTI]

    Grasch, Adam D. (Adam Davis)

    2013-01-01

    This thesis presents contributions to the analysis and design of propulsion simulators for 1:11 and 1:4 scale model wind tunnel investigations of an advanced civil transport aircraft with boundary layer ingestion (BLI). ...

  16. Thermal/Electrical Modeling for Abuse-Tolerant Design of Li-Ion Modules (Presentation)

    SciTech Connect (OSTI)

    Smith, K.; Kim, G.-H.; Pesaran, A.; Darcy, E.

    2008-11-01

    To help design safe, high-performing batteries, NREL and NASA created and verified a new multicell math model capturing electrical-thermal interactions of cells with PTC devices during thermal abuse.

  17. Model for a teaching practice : development of a prototype through design inquiry

    E-Print Network [OSTI]

    Kisiel, Arlene A. (Arlene Ann)

    1997-01-01

    This thesis examines the role of the architect in practice, specifically the architect's relationship with a health maintenance organization faced with the challenge of designing a model teaching practice. The primary goal ...

  18. Design and modeling of a PZT thin film based piezoelectric micromachined ultrasonic transducer (PMUT)

    E-Print Network [OSTI]

    Smyth, Katherine Marie

    2012-01-01

    The design and modelling framework for a piezoelectric micromachined ultrasonic transducer (PMUT) based on the piezoelectric thin film deposition of lead zirconate titanate (PZT) is defined. Through high frequency vibration ...

  19. ADAPTIVE MODELING AND DESIGN OF PACKAGING MICROSYSTEMS AND MEMS FOR WIRELESS COMMUNICATION MODULES

    E-Print Network [OSTI]

    Tentzeris, Manos

    ADAPTIVE MODELING AND DESIGN OF PACKAGING MICROSYSTEMS AND MEMS FOR WIRELESS COMMUNICATION MODULES of the most important issues in modern packaging design and simulation of structures for use in wireless. INTRODUCTION Traditional packaging systems are used for both mechanical and thermal stability as well

  20. From UML to HDL: a Model Driven Architectural Approach to Hardware-Software Co-Design

    E-Print Network [OSTI]

    Thornton, Mitchell

    From UML to HDL: a Model Driven Architectural Approach to Hardware-Software Co-Design Frank P the problem of hardware/software co-design via an open source laboratory for studying hardware- based system descriptions that can be implemented in either hardware or software. Utilizing component

  1. NATIONAL SURVEY OF ADOLESCENT WELL-BEING (NSCAW): A COMPARISON OF MODEL AND DESIGN BASED ANALYSES

    E-Print Network [OSTI]

    in the design based setting also provided conflicting results regarding the question of interest. To determineNATIONAL SURVEY OF ADOLESCENT WELL-BEING (NSCAW): A COMPARISON OF MODEL AND DESIGN BASED ANALYSES members of society. The Department of Health and Human Services sponsored the National Survey of Child

  2. DESIGN AND ANALYSIS OF THE SNS CCL HOT MODEL WATER COOLING SYSTEM USING THE SINDA/FLUINT NETWORK MODELING TOOL

    SciTech Connect (OSTI)

    C. AMMERMAN; J. BERNARDIN

    1999-11-01

    This report presents results for design and analysis of the hot model water cooling system for the Spallation Neutron Source (SNS) coupled-cavity linac (CCL). The hot model, when completed, will include segments for both the CCL and coupled-cavity drift-tube linac (CCDTL). The scope of this report encompasses the modeling effort for the CCL portion of the hot model. This modeling effort employed the SINDA/FLUINT network modeling tool. This report begins with an introduction of the SNS hot model and network modeling using SINDA/FLUINT. Next, the development and operation of the SINDA/FLUINT model are discussed. Finally, the results of the SINDA/FLUINT modeling effort are presented and discussed.

  3. Improving Battery Design with Electro-Thermal Modeling

    SciTech Connect (OSTI)

    Pesaran, A.; Vlahinos, A.; Bharathan, D.; Kim, G.-H.; Duong, T.

    2005-08-01

    Temperature greatly affects the performance and life of batteries in electric and hybrid vehicles under real driving conditions, so increased attention is being paid to battery thermal management. Sophisticated electrochemical models and finite element analysis tools are available for predicting the thermal performance of batteries, but each has limitations. In this study we describe an electro-thermal finite element approach that predicts the thermal performance of a cell or module with realistic geometry, material properties, loads, and boundary conditions.

  4. Electro-Thermal Modeling to Improve Battery Design: Preprint

    SciTech Connect (OSTI)

    Bharathan, D.; Pesaran, A.; Kim, G.; Vlahinos, A.

    2005-09-01

    Operating temperature greatly affects the performance and life of batteries in electric and hybrid electric vehicles (HEVs). Increased attention is necessary to battery thermal management. Electrochemical models and finite element analysis tools are available for predicting the thermal performance of batteries, but each has limitations. This study describes an electro-thermal finite element approach that predicts the thermal performance of a battery cell or module with realistic geometry.

  5. Molecular Self-assembly-Based Language Generation Using the Hypernetwork Model: Design of DNA Computing Experiments

    E-Print Network [OSTI]

    Molecular Self-assembly-Based Language Generation Using the Hypernetwork Model: Design of DNA Intelligence Magazine, vol.3, no.3, pp.49-63, 2008. [4] Zhang, B.-T. and Park, C.-H., Self-assembling.-H., Lee, E.-S. and Zhang, B.-T., A hypernetwork memory-Based model of sentence learning and generation

  6. Modeling and Optimization Issues Concerning a Circular Piezoelectric Actuator Design \\Lambda

    E-Print Network [OSTI]

    Modeling and Optimization Issues Concerning a Circular Piezoelectric Actuator Design \\Lambda Steven Raleigh, NC 27695 Abstract An electromechanical model for a circular piezoelectric actuator is developed and analyzed. A crit­ ical challenge in certain applications employing piezoceramic actuators is to maximize

  7. Modeling and Design of RF MEMS Structures Using Computationally Efficient Numerical Techniques

    E-Print Network [OSTI]

    Tentzeris, Manos

    Modeling and Design of RF MEMS Structures Using Computationally Efficient Numerical Techniques N. A Abstract The modeling of MEMS structures using MRTD is presented. Many complex RF structures have been communication systems efficiently and accurately. Specifically, micromachined structures such as MEMS

  8. SIMULATION, DESIGN, AND VERIFICATION OF AN ELECTRIFIED BICYCLE ENERGY MODEL Matt Barnes

    E-Print Network [OSTI]

    Brennan, Sean

    SIMULATION, DESIGN, AND VERIFICATION OF AN ELECTRIFIED BICYCLE ENERGY MODEL Matt Barnes Department and easily predict and optimize the efficiency of an electric bicycle system based on selection of critical. The model is used to guide the construction of an electrified bicycle system to achieve the highest energy

  9. DESCRIPTION OF MODELING ANALYSES IN SUPPORT OF THE 200-ZP-1 REMEDIAL DESIGN/REMEDIAL ACTION

    SciTech Connect (OSTI)

    VONGARGEN BH

    2009-11-03

    The Feasibility Study/or the 200-ZP-1 Groundwater Operable Unit (DOE/RL-2007-28) and the Proposed Plan/or Remediation of the 200-ZP-1 Groundwater Operable Unit (DOE/RL-2007-33) describe the use of groundwater pump-and-treat technology for the 200-ZP-1 Groundwater Operable Unit (OU) as part of an expanded groundwater remedy. During fiscal year 2008 (FY08), a groundwater flow and contaminant transport (flow and transport) model was developed to support remedy design decisions at the 200-ZP-1 OU. This model was developed because the size and influence of the proposed 200-ZP-1 groundwater pump-and-treat remedy will have a larger areal extent than the current interim remedy, and modeling is required to provide estimates of influent concentrations and contaminant mass removal rates to support the design of the aboveground treatment train. The 200 West Area Pre-Conceptual Design/or Final Extraction/Injection Well Network: Modeling Analyses (DOE/RL-2008-56) documents the development of the first version of the MODFLOW/MT3DMS model of the Hanford Site's Central Plateau, as well as the initial application of that model to simulate a potential well field for the 200-ZP-1 remedy (considering only the contaminants carbon tetrachloride and technetium-99). This document focuses on the use of the flow and transport model to identify suitable extraction and injection well locations as part of the 200 West Area 200-ZP-1 Pump-and-Treat Remedial Design/Remedial Action Work Plan (DOEIRL-2008-78). Currently, the model has been developed to the extent necessary to provide approximate results and to lay a foundation for the design basis concentrations that are required in support of the remedial design/remediation action (RD/RA) work plan. The discussion in this document includes the following: (1) Assignment of flow and transport parameters for the model; (2) Definition of initial conditions for the transport model for each simulated contaminant of concern (COC) (i.e., carbon tetrachloride, technetium-99, iodine-129, nitrate [as NO{sub 3}], trichloroethene [TCE], total chromium, tritium), plus uranium; (3) Assumptions underlying the predictive simulations, including the phased implementation of the final full remedy; (4) Approximate number, locations, and rates of extraction and injection wells; and (5) Predicted amounts of contaminant mass extracted and influent concentrations at individual extraction wells for each COC and for uranium. This document is a companion report to pre-conceptual design document (DOE/RL-2008-56). Together these documents describe the sequential, progressive development of the modeling analyses and design basis for the 200-ZP-1 OU remedy.

  10. Design report on SCDAP/RELAP5 model improvements - debris bed and molten pool behavior

    SciTech Connect (OSTI)

    Allison, C.M.; Rempe, J.L.; Chavez, S.A.

    1994-11-01

    the SCDAP/RELAP5/MOD3 computer code is designed to describe the overall reactor coolant system thermal-hydraulic response, core damage progression, and in combination with VICTORIA, fission product release and transport during severe accidents. Improvements for existing debris bed and molten pool models in the SCDAP/RELAP5/MOD3.1 code are described in this report. Model improvements to address (a) debris bed formation, heating, and melting; (b) molten pool formation and growth; and (c) molten pool crust failure are discussed. Relevant data, existing models, proposed modeling changes, and the anticipated impact of the changes are discussed. Recommendations for the assessment of improved models are provided.

  11. Advanced modeling and simulation to design and manufacture high performance and reliable advanced microelectronics and microsystems.

    SciTech Connect (OSTI)

    Nettleship, Ian (University of Pittsburgh, Pittsburgh, PA); Hinklin, Thomas; Holcomb, David Joseph; Tandon, Rajan; Arguello, Jose Guadalupe, Jr. (,; .); Dempsey, James Franklin; Ewsuk, Kevin Gregory; Neilsen, Michael K.; Lanagan, Michael (Pennsylvania State University, University Park, PA)

    2007-07-01

    An interdisciplinary team of scientists and engineers having broad expertise in materials processing and properties, materials characterization, and computational mechanics was assembled to develop science-based modeling/simulation technology to design and reproducibly manufacture high performance and reliable, complex microelectronics and microsystems. The team's efforts focused on defining and developing a science-based infrastructure to enable predictive compaction, sintering, stress, and thermomechanical modeling in ''real systems'', including: (1) developing techniques to and determining materials properties and constitutive behavior required for modeling; (2) developing new, improved/updated models and modeling capabilities, (3) ensuring that models are representative of the physical phenomena being simulated; and (4) assessing existing modeling capabilities to identify advances necessary to facilitate the practical application of Sandia's predictive modeling technology.

  12. Integrated canopy, building energy and radiosity model for 3D urban design

    E-Print Network [OSTI]

    Burdet, Etienne; Morand, Denis; Diab, Youssef

    2014-01-01

    We present an integrated, three dimensional, model of urban canopy, building energy and radiosity, for early stage urban designs and test it on four urban morphologies. All sub-models share a common descriptions of the urban morphology, similar to 3D urban design master plans and have simple parameters. The canopy model is a multilayer model, with a new discrete layer approach that does not rely on simplified geometry such as canyon or regular arrays. The building energy model is a simplified RC equivalent model, with no hypotheses on internal zoning or wall composition. We use the CitySim software for the radiosity model. We study the effects of convexity, the number of buildings and building height, at constant density and thermal characteristics. Our results suggest that careful three dimensional morphology design can reduce heat demand by a factor of 2, especially by improving insolation of lower levels. The most energy efficient morphology in our simulations has both the highest surface/volume ratio and ...

  13. Virginia Tech Shines Light on Home Efficiency

    Broader source: Energy.gov [DOE]

    Collegiate teams from around the world came to Madrid this month to present their solar-powered houses in the first biennial Solar Decathlon Europe, a competition modeled after the Energy Department's Solar Decathlon in Washington, D.C.

  14. Design of a next-generation regional weather research and forecast model.

    SciTech Connect (OSTI)

    Michalakes, J.

    1999-01-13

    The Weather Research and Forecast (WRF) model is a new model development effort undertaken jointly by the National Center for Atmospheric Research (NCAR), the National Oceanic and Atmospheric Administration (NOAA), and a number of collaborating institutions and university scientists. The model is intended for use by operational NWP and university research communities, providing a common framework for idealized dynamical studies, fill physics numerical weather prediction, air-quality simulation, and regional climate. It will eventually supersede large, well-established but aging regional models now maintained by the participating institutions. The WRF effort includes re-engineering the underlying software architecture to produce a modular, flexible code designed from the outset to provide portable performance across diverse computing architectures. This paper outlines key elements of the WRF software design.

  15. Model-based simultaneous optimization of multiple design parameters for lithium-ion batteries for maximization of energy density

    E-Print Network [OSTI]

    Subramanian, Venkat

    Model-based simultaneous optimization of multiple design parameters for lithium-ion batteries Keywords: Lithium-ion batteries Model-based design Optimization Physics based reformulated model a b s t r for porous electrodes that are commonly used in advanced batteries such as lithium-ion systems. The approach

  16. Medical Nuclear Supply Chain Design: A Tractable Network Model and Computational

    E-Print Network [OSTI]

    Nagurney, Anna

    importance of considering waste management. Anna Nagurney and Ladimer S. Nagurney Medical Nuclear SupplyMedical Nuclear Supply Chain Design: A Tractable Network Model and Computational Approach Anna Nagurney1 and Ladimer S. Nagurney2 1John F. Smith Memorial Professor - Isenberg School of Management

  17. Medical Nuclear Supply Chain Design: A Tractable Network Model and Computational Approach

    E-Print Network [OSTI]

    Nagurney, Anna

    operational cost minimization, and the minimization of cost associated with nuclear waste discarding, coupled, the underlying physics of radioactive decay, and the inclusion of waste management. We focus on Molybdenum-99 dueMedical Nuclear Supply Chain Design: A Tractable Network Model and Computational Approach Anna

  18. MODELING THE EFFECT OF FLOW FIELD DESIGN ON PEM FUEL CELL PERFORMANCE

    E-Print Network [OSTI]

    Van Zee, John W.

    and transportation applications. One aspect that is crucial to optimizing the performance of PEM fuel cellsMODELING THE EFFECT OF FLOW FIELD DESIGN ON PEM FUEL CELL PERFORMANCE Jeffrey Glandt, Sirivatch Shimpalee, Woo-kum Lee, and John W. Van Zee Fuel Cell Research Laboratory Department of Chemical Engineering

  19. Designing a Component-Based Architecture for the Modeling and Simulation of Nuclear Fuels and Reactors

    E-Print Network [OSTI]

    Pennycook, Steve

    interest in nuclear energy in the U. S. Applications for 26 new reactors have been sub- mitted to the U. S. The NEAMS program is organized around four technical areas of the nuclear fuel cycle: fuels, reactorsDesigning a Component-Based Architecture for the Modeling and Simulation of Nuclear Fuels

  20. Modelling and Design Optimization of Low Speed Fuel Cell Hybrid Electric Vehicles

    E-Print Network [OSTI]

    Victoria, University of

    Modelling and Design Optimization of Low Speed Fuel Cell Hybrid Electric Vehicles by Matthew Blair of emissions to global climate change. Although electric cars and buses have been the focus of much of electric and utility purposes in many countries. In order to explore the viability of fuel cell - battery hybrid

  1. A low-dimensional dynamic model of severe slugging for control design and analysis

    E-Print Network [OSTI]

    Skogestad, Sigurd

    . The prerequisites for this to occur are relatively low pipeline pressure and flow rates. Gravity induced slugs the topside (or wellhead) choke valve. However, the increased pressure drop will lower oil recoveryA low-dimensional dynamic model of severe slugging for control design and analysis Espen Storkaas

  2. DATA-DRIVEN MODELS IN STORAGE SYSTEM DESIGN Florentina I. Popovici

    E-Print Network [OSTI]

    Yeom, Heon Young

    DATA-DRIVEN MODELS IN STORAGE SYSTEM DESIGN by Florentina I. Popovici A dissertation submitted) at the UNIVERSITY OF WISCONSIN­MADISON 2007 #12;i I would like to thank to my advisors Andrea Arpaci the same process know very well how invaluable is the role of the advisor. I have been very lucky

  3. Design Models for Components in Distributed Object Software X. Xie and S. M. Shatz

    E-Print Network [OSTI]

    Shatz, Sol M.

    approach for component-based software engineering. This paper discusses an approach for blending Petri netDesign Models for Components in Distributed Object Software 1 X. Xie and S. M. Shatz University of Illinois at Chicago Abstract Component-based software development has many potential advantages, including

  4. Digital service analysis and design: the role of process modelling Steven Buchanan*

    E-Print Network [OSTI]

    Strathclyde, University of

    and usefulness of a UK National Health Service (NHS) digital library. Reflecting on lessons learnt evaluation of a National Health Service (NHS) digital library that found users satisfied with usability1 Digital service analysis and design: the role of process modelling Steven Buchanan* Department

  5. Performance modeling and cell design for high concentration methanol fuel cells

    E-Print Network [OSTI]

    Chapter 50 Performance modeling and cell design for high concentration methanol fuel cells C. E The direct methanol fuel cell (DMFC) has become a lead- ing contender to replace the lithium-ion (Li density of liquid methanol (CH3OH) fuel is 4800 Wh l-1 , whereas the theoretical energy density of Li

  6. A Semi-Empirical Model for Porous Media Heat Exchanger Design Richard A. Wirtz1

    E-Print Network [OSTI]

    Wirtz, Richard A.

    A Semi-Empirical Model for Porous Media Heat Exchanger Design Richard A. Wirtz1 Mechanical-dimensional temperature Introduction Compact heat exchangers invariably incorporate heat transfer augmentation technology matrix at the fluid-solid interface of a compact heat exchanger will also enhance performance

  7. PaNeCS: A Modeling Language for Passivity-based Design of Networked Control

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    to check for passivity and a code gener- ator for simulation in MATLAB/Simulink using the TrueTime platform modeling toolbox. The resulting designs are by construction more robust to platform effects). Real-world CPSs such as automotive vehicles, building automation systems, and groups of unmanned air

  8. Propagating Uncertainty in Solar Panel Performance for Life Cycle Modeling in Early Stage Design

    E-Print Network [OSTI]

    Yang, Maria

    Propagating Uncertainty in Solar Panel Performance for Life Cycle Modeling in Early Stage Design. This work is conducted in the context of an amorphous photovoltaic (PV) panel, using data gathered from the National Solar Radiation Database, as well as realistic data collected from an experimental hardware setup

  9. Structural Context of Exons in Protein Domains: Implications for Protein Modelling and Design

    E-Print Network [OSTI]

    Moreira, Bruno Contreras

    Structural Context of Exons in Protein Domains: Implications for Protein Modelling and Design Bruno structures taken from the Protein Data Bank. A first analysis of this set of proteins shows that intron boundaries prefer to be in non-regular secondary structure elements, while avoiding a-helices and b

  10. DESIGN AND MODELING OF DISPATCHABLE HEAT STORAGE IN WIND/DIESEL SYSTEMS

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    and Industrial Engineering University of Massachusetts, Amherst, MA 01003 ABSTRACT This paper discusses a heating to be uneconomical. End uses, such as heating and water pumping are certainly attractive and may be economic; while1 DESIGN AND MODELING OF DISPATCHABLE HEAT STORAGE IN WIND/DIESEL SYSTEMS Clint Johnson, Utama

  11. Hardware/Software Co-design for Energy-Efficient Seismic Modeling

    E-Print Network [OSTI]

    Oliker, Leonid

    Wave implementation can offer up to 8× and 3.5× energy efficiency improvement per node respectivelyHardware/Software Co-design for Energy-Efficient Seismic Modeling Jens Krueger , David Donofrio of conventional cluster technology has prompted investigation of architectural alternatives that offer higher

  12. EXCHANGE FUNCTIONS Exchange Functions is a speci cation mechanism for designing and a model for

    E-Print Network [OSTI]

    Filman, Robert E.

    to monitor and control a manufacturing process is an embedded system. 74 #12;exchange functions 75 exampleCHAPTER SEVEN EXCHANGE FUNCTIONS Exchange Functions is a speci cation mechanism for designing and a model for describing distributed and embedded systems.* Exchange Functions assumes ex- plicit processes

  13. Functional Modeling Compiler for System-Level Design of Automotive Cyber-Physical Systems

    E-Print Network [OSTI]

    Al Faruque, Mohammad Abdullah

    Functional Modeling Compiler for System-Level Design of Automotive Cyber-Physical Systems Presented A typical Cyber-Physical System (CPS) such as the modern automotive includes not only the physical domains. An example of CPS: a modern automotive More than 70 ECUs More than 5 bus systems More than 10

  14. Evolution of a Visual Impact Model to Evaluate Nuclear Plant Siting and Design Option1

    E-Print Network [OSTI]

    Evolution of a Visual Impact Model to Evaluate Nuclear Plant Siting and Design Option1 2/ Brian A/ The method can be used to train evaluators to use explicit criteria (vividness, intactness and unity) to assess change in a setting's visual quality as the result of construction of a nuclear facility, or any

  15. Managing Model Data Introduced Uncertainties in Simulator Predictions for Generation IV Systems via Optimum Experimental Design

    SciTech Connect (OSTI)

    Turinsky, Paul J; Abdel-Khalik, Hany S; Stover, Tracy E

    2011-03-31

    An optimization technique has been developed to select optimized experimental design specifications to produce data specifically designed to be assimilated to optimize a given reactor concept. Data from the optimized experiment is assimilated to generate posteriori uncertainties on the reactor concept’s core attributes from which the design responses are computed. The reactor concept is then optimized with the new data to realize cost savings by reducing margin. The optimization problem iterates until an optimal experiment is found to maximize the savings. A new generation of innovative nuclear reactor designs, in particular fast neutron spectrum recycle reactors, are being considered for the application of closing the nuclear fuel cycle in the future. Safe and economical design of these reactors will require uncertainty reduction in basic nuclear data which are input to the reactor design. These data uncertainty propagate to design responses which in turn require the reactor designer to incorporate additional safety margin into the design, which often increases the cost of the reactor. Therefore basic nuclear data needs to be improved and this is accomplished through experimentation. Considering the high cost of nuclear experiments, it is desired to have an optimized experiment which will provide the data needed for uncertainty reduction such that a reactor design concept can meet its target accuracies or to allow savings to be realized by reducing the margin required due to uncertainty propagated from basic nuclear data. However, this optimization is coupled to the reactor design itself because with improved data the reactor concept can be re-optimized itself. It is thus desired to find the experiment that gives the best optimized reactor design. Methods are first established to model both the reactor concept and the experiment and to efficiently propagate the basic nuclear data uncertainty through these models to outputs. The representativity of the experiment to the design concept is quantitatively determined. A technique is then established to assimilate this data and produce posteriori uncertainties on key attributes and responses of the design concept. Several experiment perturbations based on engineering judgment are used to demonstrate these methods and also serve as an initial generation of the optimization problem. Finally, an optimization technique is developed which will simultaneously arrive at an optimized experiment to produce an optimized reactor design. Solution of this problem is made possible by the use of the simulated annealing algorithm for solution of optimization problems. The optimization examined in this work is based on maximizing the reactor cost savings associated with the modified design made possible by using the design margin gained through reduced basic nuclear data uncertainties. Cost values for experiment design specifications and reactor design specifications are established and used to compute a total savings by comparing the posteriori reactor cost to the a priori cost plus the cost of the experiment. The optimized solution arrives at a maximized cost savings.

  16. APT Blanket System Model Based on Initial Conceptual Design - Integrated 1D TRAC System Model

    SciTech Connect (OSTI)

    Hamm, L.L.

    1998-10-07

    This report documents the approaches taken in establishing a 1-dimensional integrated blanket system model using the TRAC code, developed by Los Alamos National Laboratory.

  17. Multi-Scale Multi-Dimensional Li-Ion Battery Model for Better Design and Management (Presentation)

    SciTech Connect (OSTI)

    Kim, G.-H.; Smith, K.

    2008-10-01

    The developed model used is to provide a better understanding and help answer engineering questions about improving the design, operational strategy, management, and safety of cells.

  18. Modeling of the Reactor Core Isolation Cooling Reposnse to Beyond Design Basis Operations - Interim Report

    SciTech Connect (OSTI)

    Ross, Kyle; Cardoni, Jeffrey N.; Wilson, Chisom Shawn; Morrow, Charles; Osborn, Douglas; Gauntt, Randall O.

    2015-12-01

    Efforts are being pursued to develop and qualify a system-level model of a reactor core isolation (RCIC) steam-turbine-driven pump. The model is being developed with the intent of employing it to inform the design of experimental configurations for full-scale RCIC testing. The model is expected to be especially valuable in sizing equipment needed in the testing. An additional intent is to use the model in understanding more fully how RCIC apparently managed to operate far removed from its design envelope in the Fukushima Daiichi Unit 2 accident. RCIC modeling is proceeding along two avenues that are expected to complement each other well. The first avenue is the continued development of the system-level RCIC model that will serve in simulating a full reactor system or full experimental configuration of which a RCIC system is part. The model reasonably represents a RCIC system today, especially given design operating conditions, but lacks specifics that are likely important in representing the off-design conditions a RCIC system might experience in an emergency situation such as a loss of all electrical power. A known specific lacking in the system model, for example, is the efficiency at which a flashing slug of water (as opposed to a concentrated jet of steam) could propel the rotating drive wheel of a RCIC turbine. To address this specific, the second avenue is being pursued wherein computational fluid dynamics (CFD) analyses of such a jet are being carried out. The results of the CFD analyses will thus complement and inform the system modeling. The system modeling will, in turn, complement the CFD analysis by providing the system information needed to impose appropriate boundary conditions on the CFD simulations. The system model will be used to inform the selection of configurations and equipment best suitable of supporting planned RCIC experimental testing. Preliminary investigations with the RCIC model indicate that liquid water ingestion by the turbine decreases the developed turbine torque; the RCIC speed then slows, and thus the pump flow rate to the RPV decreases. Subsequently, RPV water level decreases due to continued boiling and the liquid fraction flowing to the RCIC decreases, thereby accelerating the RCIC and refilling the RPV. The feedback cycle then repeats itself and/or reaches a quasi-steady equilibrium condition. In other words, the water carry-over is limited by cyclic RCIC performance degradation, and hence the system becomes self-regulating. The indications achieved to date with the system model are more qualitative than quantitative. The avenues being pursued to increase the fidelity of the model are expected to add quantitative realism. The end product will be generic in the sense that the RCIC model will be incorporable within the larger reactor coolant system model of any nuclear power plant or experimental configuration. ACKNOWLEDGEMENTS This work is funded through the U.S. Department of Energy - Office of Nuclear Energy's Light Water Reactor Sustainability Program. Clinton Smith of Phoenix Analysis & Design Technologies (PADT) is acknowledged for providing assistance on the FLUENT efforts in this report, as well as modifying the geometry model of the Terry turbine to make it more amenable for FLUENT analysis with rotating reference frames.

  19. Interoperability Building Information Modeling and acoustical analysis software - A demonstration of a performing arts hall design process

    E-Print Network [OSTI]

    Kim, Sunyoung; Coffeen, Robert C.; Sanguinetti, Paola

    2013-06-02

    By sharing and managing the database for a building model, Building Information Modeling (BIM) facilitates the design process at less cost. Some of BIM software has capabilities for acoustical analysis, but it is limited to noise level demonstration...

  20. MODEL BASED BIOMASS SYSTEM DESIGN OF FEEDSTOCK SUPPLY SYSTEMS FOR BIOENERGY PRODUCTION

    SciTech Connect (OSTI)

    David J. Muth, Jr.; Jacob J. Jacobson; Kenneth M. Bryden

    2013-08-01

    Engineering feedstock supply systems that deliver affordable, high-quality biomass remains a challenge for the emerging bioenergy industry. Cellulosic biomass is geographically distributed and has diverse physical and chemical properties. Because of this feedstock supply systems that deliver cellulosic biomass resources to biorefineries require integration of a broad set of engineered unit operations. These unit operations include harvest and collection, storage, preprocessing, and transportation processes. Design decisions for each feedstock supply system unit operation impact the engineering design and performance of the other system elements. These interdependencies are further complicated by spatial and temporal variances such as climate conditions and biomass characteristics. This paper develops an integrated model that couples a SQL-based data management engine and systems dynamics models to design and evaluate biomass feedstock supply systems. The integrated model, called the Biomass Logistics Model (BLM), includes a suite of databases that provide 1) engineering performance data for hundreds of equipment systems, 2) spatially explicit labor cost datasets, and 3) local tax and regulation data. The BLM analytic engine is built in the systems dynamics software package PowersimTM. The BLM is designed to work with thermochemical and biochemical based biofuel conversion platforms and accommodates a range of cellulosic biomass types (i.e., herbaceous residues, short- rotation woody and herbaceous energy crops, woody residues, algae, etc.). The BLM simulates the flow of biomass through the entire supply chain, tracking changes in feedstock characteristics (i.e., moisture content, dry matter, ash content, and dry bulk density) as influenced by the various operations in the supply chain. By accounting for all of the equipment that comes into contact with biomass from the point of harvest to the throat of the conversion facility and the change in characteristics, the BLM evaluates economic performance of the engineered system, as well as determining energy consumption and green house gas performance of the design. This paper presents a BLM case study delivering corn stover to produce cellulosic ethanol. The case study utilizes the BLM to model the performance of several feedstock supply system designs. The case study also explores the impact of temporal variations in climate conditions to test the sensitivity of the engineering designs. Results from the case study show that under certain conditions corn stover can be delivered to the cellulosic ethanol biorefinery for $35/dry ton.

  1. A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models

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

    Tilmes, S.; Mills, Mike; Niemeier, Ulrike; Schmidt, Hauke; Robock, Alan; Kravitz, Benjamin S.; Lamarque, J. F.; Pitari, G.; English, J. M.

    2015-01-15

    A new Geoengineering Model Intercomparison Project (GeoMIP) experiment "G4 specified stratospheric aerosols" (short name: G4SSA) is proposed to investigate the impact of stratospheric aerosol geoengineering on atmosphere, chemistry, dynamics, climate, and the environment. In contrast to the earlier G4 GeoMIP experiment, which requires an emission of sulfur dioxide (SO?) into the model, a prescribed aerosol forcing file is provided to the community, to be consistently applied to future model experiments between 2020 and 2100. This stratospheric aerosol distribution, with a total burden of about 2 Tg S has been derived using the ECHAM5-HAM microphysical model, based on a continuous annualmore »tropical emission of 8 Tg SO? yr?¹. A ramp-up of geoengineering in 2020 and a ramp-down in 2070 over a period of 2 years are included in the distribution, while a background aerosol burden should be used for the last 3 decades of the experiment. The performance of this experiment using climate and chemistry models in a multi-model comparison framework will allow us to better understand the impact of geoengineering and its abrupt termination after 50 years in a changing environment. The zonal and monthly mean stratospheric aerosol input data set is available at https://www2.acd.ucar.edu/gcm/geomip-g4-specified-stratospheric-aerosol-data-set.« less

  2. A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models

    SciTech Connect (OSTI)

    Tilmes, S. [National Center for Atmospheric Research, Boulder, CO (United States); Mills, Mike [National Center for Atmospheric Research, Boulder, CO (United States); Niemeier, Ulrike [Max Planck Inst. for Meteorology, Hamburg (Germany); Schmidt, Hauke [Max Planck Inst. for Meteorology, Hamburg (Germany); Robock, Alan [Rutgers Univ., New Brunswick, NJ (United States). Dept. of Environmental Sciences; Kravitz, Benjamin S. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Lamarque, J. F. [National Center for Atmospheric Research, Boulder, CO (United States); Pitari, G. [Univ. L'Aquila (Italy). Dept. of Physical and Chemical Sciences; English, J. M. [Univ. of Colorado, Boulder, CO (United States)

    2015-01-01

    A new Geoengineering Model Intercomparison Project (GeoMIP) experiment "G4 specified stratospheric aerosols" (short name: G4SSA) is proposed to investigate the impact of stratospheric aerosol geoengineering on atmosphere, chemistry, dynamics, climate, and the environment. In contrast to the earlier G4 GeoMIP experiment, which requires an emission of sulfur dioxide (SO?) into the model, a prescribed aerosol forcing file is provided to the community, to be consistently applied to future model experiments between 2020 and 2100. This stratospheric aerosol distribution, with a total burden of about 2 Tg S has been derived using the ECHAM5-HAM microphysical model, based on a continuous annual tropical emission of 8 Tg SO? yr?¹. A ramp-up of geoengineering in 2020 and a ramp-down in 2070 over a period of 2 years are included in the distribution, while a background aerosol burden should be used for the last 3 decades of the experiment. The performance of this experiment using climate and chemistry models in a multi-model comparison framework will allow us to better understand the impact of geoengineering and its abrupt termination after 50 years in a changing environment. The zonal and monthly mean stratospheric aerosol input data set is available at https://www2.acd.ucar.edu/gcm/geomip-g4-specified-stratospheric-aerosol-data-set.

  3. Systematic Scenario-Based Analysis of UML Design Class models Lijun Yu, Robert B. France, Indrakshi Ray, Wuliang Sun

    E-Print Network [OSTI]

    Ray, Indrakshi

    Systematic Scenario-Based Analysis of UML Design Class models Lijun Yu, Robert B. France, Indrakshi, sunwl}@cs.colostate.edu Abstract Scenario-based UML Design Analysis (SUDA) is a lightweight technique the Scenario-based UML Design Analysis (SUDA) technique [Yu08] [Yu07]. SUDA can be used to rigorously analyze

  4. Design, Modeling, and Capacity Planning for Micro-Solar Power Sensor Jay Taneja, Jaein Jeong, David Culler

    E-Print Network [OSTI]

    California at Berkeley, University of

    Design, Modeling, and Capacity Planning for Micro-Solar Power Sensor Networks Jay Taneja, Jaein the network. 1 Introduction The purpose of this paper is to provide a framework for the design of micro-solar design points and provides visibility into the solar performance in real application settings. Putting

  5. A Case Study on the Model-Based Design and Integration of Automotive Cyber-Physical Systems

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    A Case Study on the Model-Based Design and Integration of Automotive Cyber-Physical Systems Di--Cyber-physical systems (CPS), such as automotive systems, are very difficult to design due to the tight interactions of an integrated automotive control system. The system is composed of two independently designed controllers

  6. Design, Testing and Modeling of the Direct Reactor Auxiliary Cooling System for AHTRs

    SciTech Connect (OSTI)

    Lv, Quiping; Sun, Xiaodong; Chtistensen, Richard; Blue, Thomas; Yoder, Graydon; Wilson, Dane

    2015-05-08

    The principal objective of this research is to test and model the heat transfer performance and reliability of the Direct Reactor Auxiliary Cooling System (DRACS) for AHTRs. In addition, component testing of fluidic diodes is to be performed to examine the performance and viability of several existing fluidic diode designs. An extensive database related to the thermal performance of the heat exchangers involved will be obtained, which will be used to benchmark a computer code for the DRACS design and to evaluate and improve, if needed, existing heat transfer models of interest. The database will also be valuable for assessing the viability of the DRACS concept and benchmarking any related computer codes in the future. The experience of making a liquid fluoride salt test facility available, with lessons learned, will greatly benefit the development of the Fluoride Salt-cooled High-temperature Reactor (FHR) and eventually the AHTR programs.

  7. Predicting Solar Flares by Data Assimilation in Avalanche Models. I. Model Design and Validation

    E-Print Network [OSTI]

    Eric Bélanger; Alain Vincent; Paul Charbonneau

    2007-08-14

    Data assimilation techniques, developed in the last two decades mainly for weather prediction, produce better forecasts by taking advantage of both theoretical/numerical models and real-time observations. In this paper, we explore the possibility of applying the data-assimilation techniques known as 4D-VAR to the prediction of solar flares. We do so in the context of a continuous version of the classical cellular-automaton-based self-organized critical avalanche models of solar flares introduced by Lu and Hamilton (Astrophys. J., 380, L89, 1991). Such models, although a priori far removed from the physics of magnetic reconnection and magneto-hydrodynamical evolution of coronal structures, nonetheless reproduce quite well the observed statistical distribution of flare characteristics. We report here on a large set of data assimilation runs on synthetic energy release time series. Our results indicate that, despite the unpredictable (and unobservable) stochastic nature of the driving/triggering mechanism within the avalanche model, 4D-VAR succeeds in producing optimal initial conditions that reproduce adequately the time series of energy released by avalanches/flares. This is an essential first step towards forecasting real flares.

  8. Communicating Design Research Effectively

    E-Print Network [OSTI]

    Roschuni, Celeste Nicole

    2012-01-01

    5.3 Persuasion in Design . . . . . . . . . . . . . .2 Design Process andCommunication 2.1 Design Process Models . . . . . . . . .

  9. Model Based Optimal Sensor Network Design for Condition Monitoring in an IGCC Plant

    SciTech Connect (OSTI)

    Kumar, Rajeeva; Kumar, Aditya; Dai, Dan; Seenumani, Gayathri; Down, John; Lopez, Rodrigo

    2012-12-31

    This report summarizes the achievements and final results of this program. The objective of this program is to develop a general model-based sensor network design methodology and tools to address key issues in the design of an optimal sensor network configuration: the type, location and number of sensors used in a network, for online condition monitoring. In particular, the focus in this work is to develop software tools for optimal sensor placement (OSP) and use these tools to design optimal sensor network configuration for online condition monitoring of gasifier refractory wear and radiant syngas cooler (RSC) fouling. The methodology developed will be applicable to sensing system design for online condition monitoring for broad range of applications. The overall approach consists of (i) defining condition monitoring requirement in terms of OSP and mapping these requirements in mathematical terms for OSP algorithm, (ii) analyzing trade-off of alternate OSP algorithms, down selecting the most relevant ones and developing them for IGCC applications (iii) enhancing the gasifier and RSC models as required by OSP algorithms, (iv) applying the developed OSP algorithm to design the optimal sensor network required for the condition monitoring of an IGCC gasifier refractory and RSC fouling. Two key requirements for OSP for condition monitoring are desired precision for the monitoring variables (e.g. refractory wear) and reliability of the proposed sensor network in the presence of expected sensor failures. The OSP problem is naturally posed within a Kalman filtering approach as an integer programming problem where the key requirements of precision and reliability are imposed as constraints. The optimization is performed over the overall network cost. Based on extensive literature survey two formulations were identified as being relevant to OSP for condition monitoring; one based on LMI formulation and the other being standard INLP formulation. Various algorithms to solve these two formulations were developed and validated. For a given OSP problem the computation efficiency largely depends on the “size” of the problem. Initially a simplified 1-D gasifier model assuming axial and azimuthal symmetry was used to test out various OSP algorithms. Finally these algorithms were used to design the optimal sensor network for condition monitoring of IGCC gasifier refractory wear and RSC fouling. The sensors type and locations obtained as solution to the OSP problem were validated using model based sensing approach. The OSP algorithm has been developed in a modular form and has been packaged as a software tool for OSP design where a designer can explore various OSP design algorithm is a user friendly way. The OSP software tool is implemented in Matlab/Simulink© in-house. The tool also uses few optimization routines that are freely available on World Wide Web. In addition a modular Extended Kalman Filter (EKF) block has also been developed in Matlab/Simulink© which can be utilized for model based sensing of important process variables that are not directly measured through combining the online sensors with model based estimation once the hardware sensor and their locations has been finalized. The OSP algorithm details and the results of applying these algorithms to obtain optimal sensor location for condition monitoring of gasifier refractory wear and RSC fouling profile are summarized in this final report.

  10. Brayton power conversion system parametric design modelling for nuclear electric propulsion. Final report

    SciTech Connect (OSTI)

    Ashe, T.L.; Otting, W.D.

    1993-11-01

    The parametrically based closed Brayton cycle (CBC) computer design model was developed for inclusion into the NASA LeRC overall Nuclear Electric Propulsion (NEP) end-to-end systems model. The code is intended to provide greater depth to the NEP system modeling which is required to more accurately predict the impact of specific technology on system performance. The CBC model is parametrically based to allow for conducting detailed optimization studies and to provide for easy integration into an overall optimizer driver routine. The power conversion model includes the modeling of the turbines, alternators, compressors, ducting, and heat exchangers (hot-side heat exchanger and recuperator). The code predicts performance to significant detail. The system characteristics determined include estimates of mass, efficiency, and the characteristic dimensions of the major power conversion system components. These characteristics are parametrically modeled as a function of input parameters such as the aerodynamic configuration (axial or radial), turbine inlet temperature, cycle temperature ratio, power level, lifetime, materials, and redundancy.

  11. Droplet traffic in microfluidic networks: A simple model for understanding and designing

    E-Print Network [OSTI]

    M. Schindler; A. Ajdari

    2007-12-20

    We propose a simple model to analyze the traffic of droplets in microfluidic ``dual networks''. Such functional networks which consist of two types of channels, namely those accessible or forbidden to droplets, often display a complex behavior characteristic of dynamical systems. By focusing on three recently proposed configurations, we offer an explanation for their remarkable behavior. Additionally, the model allows us to predict the behavior in different parameter regimes. A verification will clarify fundamental issues, such as the network symmetry, the role of the driving conditions, and of the occurrence of reversible behavior. The model lends itself to a fast numerical implementation, thus can help designing devices, identifying parameter windows where the behavior is sufficiently robust for a devices to be practically useful, and exploring new functionalities.

  12. Advanced product realization through model-based design and virtual prototyping

    SciTech Connect (OSTI)

    Andreas, R.D.

    1995-03-01

    Several government agencies and industrial sectors have recognized the need for, and payoff of, investing in the methodologies and associated technologies for improving the product realization process. Within the defense community as well as commercial industry, there are three major needs. First, they must reduce the cost of military products, of related manufacturing processes, and of the enterprises that have to be maintained. Second, they must reduce the time required to realize products while still applying the latest technologies. Finally, they must improve the predictability of process attributes, product performance, cost, schedule and quality. They must continue to advance technology, quickly incorporate their innovations in new products and in processes to produce them, and they need to capitalize on the raw computational power and communications bandwidth that continues to become available at decreasing cost. Sandia National Laboratories initiative is pursuing several interrelated, key concepts and technologies in order to enable such product realization process improvements: model-based design; intelligent manufacturing processes; rapid virtual and physical prototyping; and agile people/enterprises. While progress in each of these areas is necessary, this paper only addresses a portion of the overall initiative. First a vision of a desired future capability in model-based design and virtual prototyping is presented. This is followed by a discussion of two specific activities parametric design analysis of Synthetic Aperture Radars (SARs) and virtual prototyping of miniaturized high-density electronics -- that exemplify the vision as well as provide a status report on relevant work in progress.

  13. Element-based concrete design with three-dimensional finite element models

    SciTech Connect (OSTI)

    O'Leary, M.; Huberty, K.; Winch, S. [Nuclear Power Technologies Div., Sargent and Lundy, 55 East Monroe, Chicago, IL 60603 (United States)

    2012-07-01

    A shell element based design of a typical shear wall using analytical results from a three-dimensional finite element model subjected to a combination of vertical and lateral loads is evaluated. The axial and flexural force resultants from each element for every load combination are used to calculate the required reinforcing for each element. Strength for axial loads (P) and out-of-plane flexure (M) in structural walls is determined according to the same P-M interaction procedures used for columns. After each element has been evaluated, a required reinforcing map for each face of each element in the wall is presented along with a constructible reinforcement pattern enveloping the required reinforcing. In order to determine whether the element-based approach meets the requirements of the section cut approach to design, which is typically employed in manual calculations, the total in-plane moment (M) and total vertical axial force (P) across the entire length of the wall is calculated and the P-M points are plotted on an in-plane P-M interaction diagram. It is concluded that element-based design for a structural wall ensures that reinforcement is provided where required by the three-dimensional finite element analysis while still providing sufficient reinforcing to satisfy the section cut approach to design. (authors)

  14. Physical Model Development and Benchmarking for MHD Flows in Blanket Design

    SciTech Connect (OSTI)

    Ramakanth Munipalli; P.-Y.Huang; C.Chandler; C.Rowell; M.-J.Ni; N.Morley; S.Smolentsev; M.Abdou

    2008-06-05

    An advanced simulation environment to model incompressible MHD flows relevant to blanket conditions in fusion reactors has been developed at HyPerComp in research collaboration with TEXCEL. The goals of this phase-II project are two-fold: The first is the incorporation of crucial physical phenomena such as induced magnetic field modeling, and extending the capabilities beyond fluid flow prediction to model heat transfer with natural convection and mass transfer including tritium transport and permeation. The second is the design of a sequence of benchmark tests to establish code competence for several classes of physical phenomena in isolation as well as in select (termed here as “canonical”,) combinations. No previous attempts to develop such a comprehensive MHD modeling capability exist in the literature, and this study represents essentially uncharted territory. During the course of this Phase-II project, a significant breakthrough was achieved in modeling liquid metal flows at high Hartmann numbers. We developed a unique mathematical technique to accurately compute the fluid flow in complex geometries at extremely high Hartmann numbers (10,000 and greater), thus extending the state of the art of liquid metal MHD modeling relevant to fusion reactors at the present time. These developments have been published in noted international journals. A sequence of theoretical and experimental results was used to verify and validate the results obtained. The code was applied to a complete DCLL module simulation study with promising results.

  15. Design of Nanostructured Solar Cells Using Coupled Optical and Electrical Modeling

    E-Print Network [OSTI]

    Deceglie, Michael G

    2014-01-01

    novel route toward optical solar cell design, in which lightDesign of Nanostructured Solar Cells Using Coupled Opticaland electrical design of light trapping in solar cells is

  16. Senior Design Projects 2013 Project Title 1 : Monte Carlo Simulations Using a Benchmark Full-Core Pressured Water Rector Model

    E-Print Network [OSTI]

    Danon, Yaron

    -Core Pressured Water Rector Model Advisor: Prof. X. George Xu (JEC 5003; Tel: 518-276-4014; Email: xug2@rpi in the design and analysis of nuclear reactor systems. One of the most desirable modeling and simulation a full-core PWR reactor model for parallel MCNP calculations on the CCNI system 4. Code optimization

  17. A dynamic battery model for co-design in cyber-physical systems Fumin Zhang, Zhenwu Shi

    E-Print Network [OSTI]

    Zhang, Fumin

    A dynamic battery model for co-design in cyber-physical systems Fumin Zhang, Zhenwu Shi School, Georgia 30332 Email: wolf@ece.gatech.edu Abstract We introduce a dynamic battery model that describes the variations of the capacity of a battery under time varying discharge current. This model supports a co

  18. In-Service Design & Performance Prediction of Advanced Fusion Material Systems by Computational Modeling and Simulation

    SciTech Connect (OSTI)

    G. R. Odette; G. E. Lucas

    2005-11-15

    This final report on "In-Service Design & Performance Prediction of Advanced Fusion Material Systems by Computational Modeling and Simulation" (DE-FG03-01ER54632) consists of a series of summaries of work that has been published, or presented at meetings, or both. It briefly describes results on the following topics: 1) A Transport and Fate Model for Helium and Helium Management; 2) Atomistic Studies of Point Defect Energetics, Dynamics and Interactions; 3) Multiscale Modeling of Fracture consisting of: 3a) A Micromechanical Model of the Master Curve (MC) Universal Fracture Toughness-Temperature Curve Relation, KJc(T - To), 3b) An Embrittlement DTo Prediction Model for the Irradiation Hardening Dominated Regime, 3c) Non-hardening Irradiation Assisted Thermal and Helium Embrittlement of 8Cr Tempered Martensitic Steels: Compilation and Analysis of Existing Data, 3d) A Model for the KJc(T) of a High Strength NFA MA957, 3e) Cracked Body Size and Geometry Effects of Measured and Effective Fracture Toughness-Model Based MC and To Evaluations of F82H and Eurofer 97, 3-f) Size and Geometry Effects on the Effective Toughness of Cracked Fusion Structures; 4) Modeling the Multiscale Mechanics of Flow Localization-Ductility Loss in Irradiation Damaged BCC Alloys; and 5) A Universal Relation Between Indentation Hardness and True Stress-Strain Constitutive Behavior. Further details can be found in the cited references or presentations that generally can be accessed on the internet, or provided upon request to the authors. Finally, it is noted that this effort was integrated with our base program in fusion materials, also funded by the DOE OFES.

  19. Foundation Heat Exchanger Final Report: Demonstration, Measured Performance, and Validated Model and Design Tool

    SciTech Connect (OSTI)

    Hughes, Patrick [ORNL; Im, Piljae [ORNL

    2012-01-01

    Geothermal heat pumps, sometimes called ground-source heat pumps (GSHPs), have been proven capable of significantly reducing energy use and peak demand in buildings. Conventional equipment for controlling the temperature and humidity of a building, or supplying hot water and fresh outdoor air, must exchange energy (or heat) with the building's outdoor environment. Equipment using the ground as a heat source and heat sink consumes less non-renewable energy (electricity and fossil fuels) because the earth is cooler than outdoor air in summer and warmer in winter. The most important barrier to rapid growth of the GSHP industry is high first cost of GSHP systems to consumers. The most common GSHP system utilizes a closed-loop ground heat exchanger. This type of GSHP system can be used almost anywhere. There is reason to believe that reducing the cost of closed-loop systems is the strategy that would achieve the greatest energy savings with GSHP technology. The cost premium of closed-loop GSHP systems over conventional space conditioning and water heating systems is primarily associated with drilling boreholes or excavating trenches, installing vertical or horizontal ground heat exchangers, and backfilling the excavations. This project investigates reducing the cost of horizontal closed-loop ground heat exchangers by installing them in the construction excavations, augmented when necessary with additional trenches. This approach applies only to new construction of residential and light commercial buildings or additions to such buildings. In the business-as-usual scenario, construction excavations are not used for the horizontal ground heat exchanger (HGHX); instead the HGHX is installed entirely in trenches dug specifically for that purpose. The potential cost savings comes from using the construction excavations for the installation of ground heat exchangers, thereby minimizing the need and expense of digging additional trenches. The term foundation heat exchanger (FHX) has been coined to refer exclusively to ground heat exchangers installed in the overcut around the basement walls. The primary technical challenge undertaken by this project was the development and validation of energy performance models and design tools for FHX. In terms of performance modeling and design, ground heat exchangers in other construction excavations (e.g., utility trenches) are no different from conventional HGHX, and models and design tools for HGHX already exist. This project successfully developed and validated energy performance models and design tools so that FHX or hybrid FHX/HGHX systems can be engineered with confidence, enabling this technology to be applied in residential and light commercial buildings. The validated energy performance model also addresses and solves another problem, the longstanding inadequacy in the way ground-building thermal interaction is represented in building energy models, whether or not there is a ground heat exchanger nearby. Two side-by-side, three-level, unoccupied research houses with walkout basements, identical 3,700 ft{sup 2} floor plans, and hybrid FHX/HGHX systems were constructed to provide validation data sets for the energy performance model and design tool. The envelopes of both houses are very energy efficient and airtight, and the HERS ratings of the homes are 44 and 45 respectively. Both houses are mechanically ventilated with energy recovery ventilators, with space conditioning provided by water-to-air heat pumps with 2 ton nominal capacities. Separate water-to-water heat pumps with 1.5 ton nominal capacities were used for water heating. In these unoccupied research houses, human impact on energy use (hot water draw, etc.) is simulated to match the national average. At House 1 the hybrid FHX/HGHX system was installed in 300 linear feet of excavation, and 60% of that was construction excavation (needed to construct the home). At House 2 the hybrid FHX/HGHX system was installed in 360 feet of excavation, 50% of which was construction excavation. There are six pipes in all excavations (three par

  20. A Multi-Objective, Hub-and-Spoke Supply Chain Design Model For Densified Biomass

    SciTech Connect (OSTI)

    Md S. Roni; Sandra Eksioglu; Kara G. Cafferty

    2014-06-01

    In this paper we propose a model to design the supply chain for densified biomass. Rail is typically used for long-haul, high-volume shipment of densified biomass. This is the reason why a hub-and-spoke network structure is used to model this supply chain. The model is formulated as a multi-objective, mixed-integer programing problem under economic, environmental, and social criteria. The goal is to identify the feasibility of meeting the Renewable Fuel Standard (RFS) by using biomass for production of cellulosic ethanol. The focus in not just on the costs associated with meeting these standards, but also exploring the social and environmental benefits that biomass production and processing offers by creating new jobs and reducing greenhouse gas (GHG) emissions. We develop an augmented ?-constraint method to find the exact Pareto solution to this optimization problem. We develop a case study using data from the Mid-West. The model identifies the number, capacity and location of biorefineries needed to make use of the biomass available in the region. The model estimates the delivery cost of cellulosic ethanol under different scenario, the number new jobs created and the GHG emission reductions in the supply chain.

  1. A Multi-Objective, Hub-and-Spoke Supply Chain Design Model for Densified Biomass

    SciTech Connect (OSTI)

    Jacob J. Jacobson; Md. S. Roni; Kara G. Cafferty; Sandra D. Eksioglu

    2014-06-01

    In this paper we propose a model to design the supply chain for densified biomass. Rail is typically used for longhaul, high-volume shipment of densified biomass. This is the reason why a hub-and-spoke network structure is used to model this supply chain. The model is formulated as a multi-objective, mixed-integer programing problem under economic, environmental, and social criteria. The goal is to identify the feasibility of meeting the Renewable Fuel Standard (RFS) by using biomass for production of cellulosic ethanol. The focus is not just on the costs associated with meeting these standards, but also exploring the social and environmental benefits that biomass production and processing offers by creating new jobs and reducing greenhouse gas (GHG) emissions. We develop an augmented ?-constraint method to find the exact Pareto solution to this optimization problem. We develop a case study using data from the Mid-West. The model identifies the number, capacity and location of biorefineries needed to make use of the biomass available in the region. The model estimates the delivery cost of cellulosic ethanol under different scenario, the number new jobs created and the GHG emission reductions in the supply chain.

  2. Dynamic (G2) Model Design Document, 24590-WTP-MDD-PR-01-002, Rev. 12

    SciTech Connect (OSTI)

    Deng, Yueying; Kruger, Albert A.

    2013-12-16

    The Hanford Tank Waste Treatment and Immobilization Plant (WTP) Statement of Work (Department of Energy Contract DE-AC27-01RV14136, Section C) requires the contractor to develop and use process models for flowsheet analyses and pre-operational planning assessments. The Dynamic (G2) Flowsheet is a discrete-time process model that enables the project to evaluate impacts to throughput from eventdriven activities such as pumping, sampling, storage, recycle, separation, and chemical reactions. The model is developed by the Process Engineering (PE) department, and is based on the Flowsheet Bases, Assumptions, and Requirements Document (24590-WTP-RPT-PT-02-005), commonly called the BARD. The terminologies of Dynamic (G2) Flowsheet and Dynamic (G2) Model are interchangeable in this document. The foundation of this model is a dynamic material balance governed by prescribed initial conditions, boundary conditions, and operating logic. The dynamic material balance is achieved by tracking the storage and material flows within the plant as time increments. The initial conditions include a feed vector that represents the waste compositions and delivery sequence of the Tank Farm batches, and volumes and concentrations of solutions in process equipment before startup. The boundary conditions are the physical limits of the flowsheet design, such as piping, volumes, flowrates, operation efficiencies, and physical and chemical environments that impact separations, phase equilibriums, and reaction extents. The operating logic represents the rules and strategies of running the plant.

  3. TRISO Fuel Performance: Modeling, Integration into Mainstream Design Studies, and Application to a Thorium-fueled Fusion-Fission Hybrid Blanket

    E-Print Network [OSTI]

    Powers, Jeffrey

    2011-01-01

    Neutronics Models and Methodologies 3.1 Thorium LIFE DesignEngine. . .Design Parameters for Thorium-fueled LIFE TRISOburnup value for DU and Thorium hybrid LIFE engine designs

  4. PORFLOW MODELING FOR A PRELIMINARY ASSESSMENT OF THE PERFORMANCE OF NEW SALTSTONE DISPOSAL UNIT DESIGNS

    SciTech Connect (OSTI)

    Smith, F.

    2012-08-06

    At the request of Savannah River Remediation (SRR), SRNL has analyzed the expected performance obtained from using seven 32 million gallon Saltstone Disposal Units (SDUs) in the Z-Area Saltstone Disposal Facility (SDF) to store future saltstone grout. The analysis was based on preliminary SDU final design specifications. The analysis used PORFLOW modeling to calculate the release of 20 radionuclides from an SDU and transport of the radionuclides and daughters through the vadose zone. Results from this vadose zone analysis were combined with previously calculated releases from existing saltstone vaults and FDCs and a second PORFLOW model run to calculate aquifer transport to assessment points located along a boundary 100 m from the nearest edge of the SDF sources. Peak concentrations within 12 sectors spaced along the 100 m boundary were determined over a period of evaluation extending 20,000 years after SDF closure cap placement. These peak concentrations were provided to SRR to use as input for dose calculations.

  5. Design and Synthesis of a Novel Triptycene-Based Ligand for Modeling Carboxylate-Bridged Diiron Enzyme Active Sites

    E-Print Network [OSTI]

    Li, Yang

    A novel triptycene-based ligand with a preorganized framework was designed to model carboxylate-bridged diiron active sites in bacterial multicomponent monooxygenase (BMM) hydroxylase enzymes. The synthesis of the ...

  6. 2015 Hydrogen Student Design Contest Challenges Students to Develop Innovative Hydrogen Fueling Station Business and Financing Models

    Broader source: Energy.gov [DOE]

    The Hydrogen Education Foundation announced the 11th annual Hydrogen Student Design Contest, which will challenge student teams to develop business and financing models for hydrogen fueling stations. Registration for the Contest is open until January 16, 2015.

  7. Proceedings in Applied Mathematics and Mechanics, 15 October 2007 Uncertainty modeling in autonomous robust spacecraft system design

    E-Print Network [OSTI]

    Neumaier, Arnold

    Proceedings in Applied Mathematics and Mechanics, 15 October 2007 Uncertainty modeling in autonomous robust spacecraft system design Martin Fuchs1 , Arnold Neumaier1 , and Daniela Girimonte2 1 system engineers or even of completely automated design methods capturing the reasoning of the system

  8. Abstract Designers of advanced power converters may choose from a variety of switching device models for simulation. Some

    E-Print Network [OSTI]

    Kimball, Jonathan W.

    Abstract ­ Designers of advanced power converters may choose from a variety of switching device to the design of a typical power converter than voltage transients. Averaging is used in [7] to create a power dissipation model. The present work instead inserts power dissipating elements at each switching edge

  9. Improvement of Stent Retriever Design and Efficacy of Mechanical Thrombectomy in a Flow Model

    SciTech Connect (OSTI)

    Wenger, Katharina; Nagl, Frank; Wagner, Marlies Berkefeld, Joachim

    2013-02-15

    In vitro experiments were performed to evaluate the efficacy of mechanical intracranial thrombectomy comparing the newly developed Aperio stent retriever and standard devices for stroke treatment. The Aperio (A), with an increased working length of 4 cm and a special cell design for capturing and withholding clots, was compared to three benchmark devices: the Solitaire retrievable stent (B), the Merci X6 (C), and the Merci L5 retriever (D). In a vascular glass model with pulsatile flow, reminiscent of the M1 segment of the middle cerebral artery, we repeatedly induced occlusion by generating thrombi via a modified Chandler loop system. The numbers of recanalization attempts, peripheral embolizations, and recanalizations at the site of occlusion were recorded during 10 retrieval experiments with each device. Eleven devices were able to remove the blood clots from the occluded branch. In 34 of 40 experiments, restoration of flow was obtained in 1-3 attempts. The main differences between the study devices were observed in terms of clot withholding and fragmentation during retrieval. Although there was only one fragmentation recorded for device A, disengagement of the whole clot or peripheral embolization of fragments occurred more frequently (5-7 times) with devices B, C, and D. In a vascular model, the design of device A was best at capturing and withholding thrombi during retrieval. Further study will be necessary to see whether this holds true in clinical applications.

  10. Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher iSlide 1 More Documents &1000 Independence<ADepartment ofWake of1 of 69

  11. NREL: Technology Deployment - Solar Decathlon

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines lightGeospatial ToolkitSMARTS -Being Replicated AcrossSolar Soft Costs

  12. Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing Tool FitsProjectDataSecretaryDepartment of EnergyDepartment»New Teams!Openingat

  13. Hydro-economic models: Concepts, design, applications, and future prospects Julien J. Harou a,*, Manuel Pulido-Velazquez b

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    Review Hydro-economic models: Concepts, design, applications, and future prospects Julien J. Harou of Frank Ward, Associate Editor Keywords: Hydro-economic models Integrated water resource management (IWRM and space will increasingly motivate efforts to address water scarcity and reduce water conflicts. Hydro

  14. ON THE ROLE OF THERMOELECTRIC HEAT TRANSFER IN THE DESIGN OF SMA ACTUATORS: THEORETICAL MODELING AND EXPERIMENT

    E-Print Network [OSTI]

    ON THE ROLE OF THERMOELECTRIC HEAT TRANSFER IN THE DESIGN OF SMA ACTUATORS: THEORETICAL MODELING theoretical/experimentalstudy of the heat transferin thermoelectricShape Memory Alloy (SMA) actuators is undertaken in this paper. A one-dimensional model of a thermoelectric unit cell with a SMA junction

  15. Development and Application of Advanced Models for Steam Hydrogasification: Process Design and Economic Evaluation

    E-Print Network [OSTI]

    Lu, Xiaoming

    2012-01-01

    Process Design and Economic Evaluation A DissertationProcess Design and Economic Evaluation by Xiaoming Lu Doctorprocess simulation and economic evaluation methodology is

  16. Cost-effective design of scale-inhibitor squeeze treatments using a mathematical model

    SciTech Connect (OSTI)

    Kokal, S.L.; Raju, K.U.; Bayona, H.

    1996-05-01

    Scale formation and deposition in production facilities is a challenging problem faced by the oil industry. Their deposition leads to operational problems, safety hazards, and an overall decrease in production efficiency. Downhole scale-inhibitor squeeze treatments provide the most common and effective means of preventing the formation of oilfield scale deposits. This paper presents an analysis and design study of field-inhibitor squeeze treatments. A mathematical model was used to simulate inhibitor-squeeze return data from several Saudi Aramco wells. A wide range of sensitivities in squeeze treatments were investigated, including inhibitor concentration, inhibitor volume, overflush size, and shut-in time. An optimization of the squeeze injection parameters was carried out with the numerical simulator. This optimization was based on squeeze performance as well as on economic criteria. The results indicate that the optimized treatment strategy is very well-specific and depends on the water production rates and operational parameters, like the scale-inhibitor concentration and volume and the amount of overflush. Recommendations are made for optimizing (in terms of cost effectiveness) the squeeze-treatment design.

  17. Cost effective design of scale inhibitor squeeze treatments using a mathematical model

    SciTech Connect (OSTI)

    Kokal, S.L.; Raju, K.U.; Bayona, H. [Saudi Aramco, Dhahran (Saudi Arabia)

    1995-11-01

    Scale formation and deposition in production facilities is a challenging problem faced by the oil industry. Their deposition leads to operational problems, safety hazards and an overall decrease in production efficiency. Downhole scale inhibitor squeeze treatments provide the most common and effective means of preventing the formation of oilfield scale deposits. This paper presents an analysis and design study of field inhibitor squeeze treatments. A mathematical model was used to simulate inhibitor squeeze return data from several Saudi Aramco wells. A wide range of sensitivities in squeeze treatments were investigated including inhibitor concentration, inhibitor volume, overflush size, shut-in time, etc. An optimization of the squeeze injection parameters was carried out using the numerical simulator. This optimization was based on squeeze performance as well as on economic criteria. The results indicate that the optimized treatment strategy is very well specific and depends on the water production rates, and operational parameters like the scale inhibitor concentration and volume and the amount of overflush. Recommendations are made for optimizing (in terms of cost effectiveness) the squeeze treatment design.

  18. Models for Battery Reliability and Lifetime: Applications in Design and Health Management (Presentation)

    SciTech Connect (OSTI)

    Smith, K.; Neubauer, J.; Wood, E.; Jun, M.; Pesaran, A.

    2013-06-01

    This presentation discusses models for battery reliability and lifetime and the Battery Ownership Model.

  19. WaterTransport in PEM Fuel Cells: Advanced Modeling, Material Selection, Testing and Design Optimization

    SciTech Connect (OSTI)

    J. Vernon Cole; Abhra Roy; Ashok Damle; Hari Dahr; Sanjiv Kumar; Kunal Jain; Ned Djilai

    2012-10-02

    Water management in Proton Exchange Membrane, PEM, Fuel Cells is challenging because of the inherent conflicts between the requirements for efficient low and high power operation. Particularly at low powers, adequate water must be supplied to sufficiently humidify the membrane or protons will not move through it adequately and resistance losses will decrease the cell efficiency. At high power density operation, more water is produced at the cathode than is necessary for membrane hydration. This excess water must be removed effectively or it will accumulate in the Gas Diffusion Layers, GDLs, between the gas channels and catalysts, blocking diffusion paths for reactants to reach the catalysts and potentially flooding the electrode. As power density of the cells is increased, the challenges arising from water management are expected to become more difficult to overcome simply due to the increased rate of liquid water generation relative to fuel cell volume. Thus, effectively addressing water management based issues is a key challenge in successful application of PEMFC systems. In this project, CFDRC and our partners used a combination of experimental characterization, controlled experimental studies of important processes governing how water moves through the fuel cell materials, and detailed models and simulations to improve understanding of water management in operating hydrogen PEM fuel cells. The characterization studies provided key data that is used as inputs to all state-of-the-art models for commercially important GDL materials. Experimental studies and microscopic scale models of how water moves through the GDLs showed that the water follows preferential paths, not branching like a river, as it moves toward the surface of the material. Experimental studies and detailed models of water and airflow in fuel cells channels demonstrated that such models can be used as an effective design tool to reduce operating pressure drop in the channels and the associated costs and weight of blowers and pumps to force air and hydrogen gas through the fuel cell. Promising improvements to materials structure and surface treatments that can potentially aid in managing the distribution and removal of liquid water were developed; and improved steady-state and freeze-thaw performance was demonstrated for a fuel cell stack under the self-humidified operating conditions that are promising for stationary power generation with reduced operating costs.

  20. Detailed Modeling, Design, and Evaluation of a Scalable Multi-level Checkpointing System

    SciTech Connect (OSTI)

    Moody, A T; Bronevetsky, G; Mohror, K M; de Supinski, B R

    2010-04-09

    High-performance computing (HPC) systems are growing more powerful by utilizing more hardware components. As the system mean-time-before-failure correspondingly drops, applications must checkpoint more frequently to make progress. However, as the system memory sizes grow faster than the bandwidth to the parallel file system, the cost of checkpointing begins to dominate application run times. A potential solution to this problem is to use multi-level checkpointing, which employs multiple types of checkpoints with different costs and different levels of resiliency in a single run. The goal is to design light-weight checkpoints to handle the most common failure modes and rely on more expensive checkpoints for less common, but more severe failures. While this approach is theoretically promising, it has not been fully evaluated in a large-scale, production system context. To this end we have designed a system, called the Scalable Checkpoint/Restart (SCR) library, that writes checkpoints to storage on the compute nodes utilizing RAM, Flash, or disk, in addition to the parallel file system. We present the performance and reliability properties of SCR as well as a probabilistic Markov model that predicts its performance on current and future systems. We show that multi-level checkpointing improves efficiency on existing large-scale systems and that this benefit increases as the system size grows. In particular, we developed low-cost checkpoint schemes that are 100x-1000x faster than the parallel file system and effective against 85% of our system failures. This leads to a gain in machine efficiency of up to 35%, and it reduces the the load on the parallel file system by a factor of two on current and future systems.

  1. Development of an early stage ship design tool for rapid modeling in Paramarine

    E-Print Network [OSTI]

    Thurkins, Eric J., Jr

    2012-01-01

    In early-stage ship design, it is helpful to perform preliminary design and analysis on many configurations to assist in developing and narrowing the trade space. This process is further complicated with the increasing ...

  2. A system dynamics model for the strategic analysis of options for sourcing engineering design

    E-Print Network [OSTI]

    Ufongene, Charles Mmaduka

    2008-01-01

    EC (Engineering Change) is the natural by-product of the Engineering Design process. There are two types of EC: Revisions and Defects Correction. Revisions arise because Engineering Design is an iterative process, requiring ...

  3. Functional design of mechanical products based on behavior-driven function-environment-structure modeling framework

    E-Print Network [OSTI]

    Zhang, W.Y.

    The relative significance of upstream design activity to downstream design activity is widely recognized, due to its critical role in determining the final product’s functionality. Although there are now some general ...

  4. Influence of modeling and simulation on the maturation of plasma technology: Feature evolution and reactor design

    E-Print Network [OSTI]

    Kushner, Mark

    requires fluxes from reactor scale phenom- ena. To achieve the goal of using MS for first principles design and reactor design David B. Gravesa) Department of Chemical Engineering, University of California, Berkeley and future potential of MS for feature evolution and plasma reactor design. © 2003 American Vacuum Society

  5. On the modeling, design and validation of two dimensional quasi-static eddy current forces in a mechanical oscillator.

    SciTech Connect (OSTI)

    Mitchell, John Anthony; Epp, David S.; Wittwer, Jonathan W.

    2005-10-01

    Damping vibrations is important in the design of some types of inertial sensing devices. One method for adding damping to a device is to use magnetic forces generated by a static magnetic field interacting with eddy currents. In this report, we develop a 2-dimensional finite element model for the analysis of quasistatic eddy currents in a thin sheet of conducting material. The model was used for design and sensitivity analyses of a novel mechanical oscillator that consists of a shuttle mass (thin sheet of conducting material) and a set of folded spring elements. The oscillator is damped through the interaction of a static magnetic field and eddy currents in the shuttle mass. Using a prototype device and Laser Dopler Velocimetry (LDV), measurements were compared to the model in a validation study using simulation based uncertainty analyses. Measurements were found to follow the trends predicted by the model.

  6. The North American Carbon Program Multi-scale synthesis and Terrestrial Model Intercomparison Project Part 1: Overview and experimental design

    SciTech Connect (OSTI)

    Huntzinger, D.N.; Schwalm, C.; Michalak, A.M; Schaefer, K.; King, A.W.; Wei, Y.; Jacobson, A.; Liu, S.; Cook, R.; Post, W.M.; Berthier, G.; Hayes, D.; Huang, M.; Ito, A.; Lei, H.; Lu, C.; Mao, J.; Peng, C.H.; Peng, S.; Poulter, B.; Riccuito, D.; Shi, X.; Tian, H.; Wang, W.; Zeng, N.; Zhao, F.; Zhu, Q.

    2013-01-01

    Terrestrial biosphere models (TBMs) have become an integral tool for extrapolating local observations and understanding of land-atmosphere carbon exchange to larger regions. The North American Carbon Program (NACP) Multi-scale synthesis and Terrestrial Model Intercomparison Project (MsTMIP) is a formal model intercomparison and evaluation effort focused on improving the diagnosis and attribution of carbon exchange at regional and global scales. MsTMIP builds upon current and past synthesis activities, and has a unique framework designed to isolate, interpret, and inform understanding of how model structural differences impact estimates of carbon uptake and release. Here we provide an overview of the MsTMIP effort and describe how the MsTMIP experimental design enables the assessment and quantification of TBM structural uncertainty. Model structure refers to the types of processes considered (e.g. nutrient cycling, disturbance, lateral transport of carbon), and how these processes are represented (e.g. photosynthetic formulation, temperature sensitivity, respiration) in the models. By prescribing a common experimental protocol with standard spin-up procedures and driver data sets, we isolate any biases and variability in TBM estimates of regional and global carbon budgets resulting from differences in the models themselves (i.e. model structure) and model-specific parameter values. An initial intercomparison of model structural differences is represented using hierarchical cluster diagrams (a.k.a. dendrograms), which highlight similarities and differences in how models account for carbon cycle, vegetation, energy, and nitrogen cycle dynamics. We show that, despite the standardized protocol used to derive initial conditions, models show a high degree of variation for GPP, total living biomass, and total soil carbon, underscoring the influence of differences in model structure and parameterization on model estimates.

  7. Embedded Sensors and Controls to Improve Component Performance and Reliability - System Dynamics Modeling and Control System Design

    SciTech Connect (OSTI)

    Melin, Alexander M.; Kisner, Roger A.; Fugate, David L.

    2013-10-01

    This report documents the current status of the modeling, control design, and embedded control research for the magnetic bearing canned rotor pump being used as a demonstration platform for deeply integrating instrumentation and controls (I{\\&}C) into nuclear power plant components. This pump is a highly inter-connected thermo/electro/mechanical system that requires an active control system to operate. Magnetic bearings are inherently unstable system and without active, moment by moment control, the rotor would contact fixed surfaces in the pump causing physical damage. This report details the modeling of the pump rotordynamics, fluid forces, electromagnetic properties of the protective cans, active magnetic bearings, power electronics, and interactions between different dynamical models. The system stability of the unforced and controlled rotor are investigated analytically. Additionally, controllers are designed using proportional derivative (PD) control, proportional integral derivative (PID) control, voltage control, and linear quadratic regulator (LQR) control. Finally, a design optimization problem that joins the electrical, mechanical, magnetic, and control system design into one problem to balance the opposing needs of various design criteria using the embedded system approach is presented.

  8. Team California Wins the Communications Contest at U.S. Department...

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

    teams from the United States, Canada, Germany, and Spain are competing in DOE's fourth Solar Decathlon to design, build, and operate houses powered by the sun. Teams are...

  9. Whole Building Performance-Based Procurement Training | Department...

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

    More Documents & Publications Best Practices for Controlling Capital Costs in Net Zero Energy Design and Construction - 2014 BTO Peer Review Solar Decathlon Building America...

  10. A Model-Based Design of Cyber-Physical Energy Systems Mohammad Abdullah Al Faruque, Fereidoun Ahourai

    E-Print Network [OSTI]

    Al Faruque, Mohammad Abdullah

    ]. However, the introduction of Distributed Energy Resources (DERs) including renewable sources, and newA Model-Based Design of Cyber-Physical Energy Systems Mohammad Abdullah Al Faruque, Fereidoun, CA, USA Email: {alfaruqu, fahourai}@uci.edu Abstract-- Cyber-Physical Energy Systems (CPES

  11. Key words. Emissions markets, Cap-and-trade schemes, Equilibrium models, Environmental MARKET DESIGN FOR EMISSION TRADING SCHEMES

    E-Print Network [OSTI]

    Carmona, Rene

    Key words. Emissions markets, Cap-and-trade schemes, Equilibrium models, Environmental Finance. MARKET DESIGN FOR EMISSION TRADING SCHEMES REN´E CARMONA , MAX FEHR , JURI HINZ , AND ARNAUD PORCHET to help policy makers and regulators understand the pros and the cons of the emissions markets. We propose

  12. Advances in Life-Cycle Cost Analysis and Design of Civil Infrastructure Systems LIFE CYCLE COST MODEL FOR EVALUATING THE

    E-Print Network [OSTI]

    Lepech, Michael D.

    ). Cement production accounts for 5% of all global anthropogenic carbon dioxide (CO2) emissions #12;AdvancesAdvances in Life-Cycle Cost Analysis and Design of Civil Infrastructure Systems 143 LIFE CYCLE COST and cost model was developed to evaluate infrastructure sustainability, and compare alternative materials

  13. A Three-Dimensional Model of Residential Energy Consumer Archetypes for Local Energy Policy Design in the UK

    E-Print Network [OSTI]

    Aickelin, Uwe

    of household behaviour of using energy, and the duration of property daytime occupancy. With the proposed model for 26% of overall UK CO2 emission (Swan et al, 2010). As the UK is a heavily urbanised industrial a 2020 national target of cutting CO2 emission by 34% from 1990 levels. Designing energy policy at local

  14. Design and Modeling of Novel Multiband/Wideband Antennas for RFID Tags and Readers Using Time-/Frequency-Domain Simulators

    E-Print Network [OSTI]

    Tentzeris, Manos

    environments and standards (US, Europe, Asia) [2]. This paper presents for the first time the design, modeling, in this inductively coupled RFID antenna, the radiated energy is focused directionally in a dumbbell shape as shown is expected to achieve with RFID antennas in such a configuration. Paper is considered one of the best

  15. A Design System for Six-Bar Linkages Integrated with a Solid Modeler

    E-Print Network [OSTI]

    Sonawale, KH; McCarthy, JM

    2015-01-01

    2000, Mechanism Design: Enumeration of Kinematic StructuresKinematic Synthesis of Mechanically Constrained Planar 3R Chains,” First European Conference on Mechanism

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

    E-Print Network [OSTI]

    Roberts, David C. (David Christopher)

    2002-01-01

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

  17. Process Design of Wastewater Treatment for the NREL Cellulosic Ethanol Model

    SciTech Connect (OSTI)

    Steinwinder, T.; Gill, E.; Gerhardt, M.

    2011-09-01

    This report describes a preliminary process design for treating the wastewater from NREL's cellulosic ethanol production process to quality levels required for recycle. In this report Brown and Caldwell report on three main tasks: 1) characterization of the effluent from NREL's ammonia-conditioned hydrolyzate fermentation process; 2) development of the wastewater treatment process design; and 3) development of a capital and operational cost estimate for the treatment concept option. This wastewater treatment design was incorporated into NREL's cellulosic ethanol process design update published in May 2011 (NREL/TP-5100-47764).

  18. Design and manufacture of a large-scale collagen protein model for educational use

    E-Print Network [OSTI]

    Cofer, Emily E., 1982-

    2004-01-01

    A meter-scale model of the fibrous 1CGD molecule, a synthetic collagen-like peptide, was modeled and manufactured for educational use. We chose to model and manufacture the 1CGD molecule because collagen is of biological ...

  19. Synthesis and Evaluation of CO2 Thickeners Designed with Molecular Modeling

    SciTech Connect (OSTI)

    Robert Enick; Erick Beckman; J. Karl Johnson

    2009-08-31

    The objective of this research was to use molecular modeling techniques, coupled with our prior experimental results, to design, synthesize and evaluate inexpensive, non-fluorous carbon dioxide thickening agents. The first type of thickener that was considered was associating polymers. Typically, these thickeners are copolymers that contain a highly CO{sub 2}-philic monomer, and a small concentration of a CO{sub 2}-phobic associating monomer. Yale University was solely responsible for the synthesis of a second type of thickener; small, hydrogen bonding compounds. These molecules have a core that contains one or more hydrogen-bonding groups, such as urea or amide groups. Non-fluorous, CO{sub 2}-philic functional groups were attached to the hydrogen bonding core of the compound to impart CO{sub 2} stability and macromolecular stability to the linear 'stack' of these compounds. The third type of compound initially considered for this investigation was CO{sub 2}-soluble surfactants. These surfactants contain conventional ionic head groups and composed of CO{sub 2}-philic oligomers (short polymers) or small compounds (sugar acetates) previously identified by our research team. Mobility reduction could occur as these surfactant solutions contacted reservoir brine and formed mobility control foams in-situ. The vast majority of the work conducted in this study was devoted to the copolymeric thickeners and the small hydrogen-bonding thickeners; these thickeners were intended to dissolve completely in CO{sub 2} and increase the fluid viscosity. A small but important amount of work was done establishing the groundwork for CO{sub 2}-soluble surfactants that reduced mobility by generating foams in-situ as the CO{sub 2}+surfactant solution mixed with in-situ brine.

  20. Model-based design: a report from the trenches of the DARPA Urban Challenge

    E-Print Network [OSTI]

    2009-01-01

    Sect. 4.2. 4.2 Software equivalence testing When testing thesoftware and systems modeling community would enjoy testingtesting is limited by physical constraints. Model/Software/

  1. Design of Nanostructured Solar Cells Using Coupled Optical and Electrical Modeling

    E-Print Network [OSTI]

    Deceglie, Michael G

    2014-01-01

    Using Coupled Optical and Electrical Modeling Michael G.We use coupled optical and electrical modeling to guideto optimize both the electrical device physics and the

  2. Exploring a capability-demand interaction model for inclusive design evaluation

    E-Print Network [OSTI]

    Persad, Umesh

    2012-03-06

    ........................................................................................................ 25 2.2.3 The Inclusive Design Process ....................................................................................... 26 2.2.4 Key Theoretical Concepts in Inclusive Design .............................................................. 27 2... ..................................................................................... 54 2.5.1 Accuracy of Predictions Using Capability Data ............................................................ 55 5 2.6 Summary of Research Problem.................................................................................. 55 2...

  3. Model Driven Design and Implementation of Statistical Surveys Chul Hwee Kim1

    E-Print Network [OSTI]

    Grundy, John

    @cs}.auckland.ac.nz Abstract We describe the evolution of a statistical survey design visual language from a standalone design language, visual environment 1. Introduction Statistical surveys have extensive roots running back by high quality software packages like R [6], so low-level statistical technique implementation

  4. Model Based Structural Evaluation & Design of Overpack Container for Bag-Buster Processing of TRU Waste Drums

    SciTech Connect (OSTI)

    D. T. Clark; A. S. Siahpush; G. L. Anderson

    2004-07-01

    This paper describes a materials and computational model based analysis utilized to design an engineered “overpack” container capable of maintaining structural integrity for confinement of transuranic wastes undergoing the cryo-vacuum stress based “Bag-Buster” process and satisfying DOT 7A waste package requirements. The engineered overpack is a key component of the “Ultra-BagBuster” process/system being commercially developed by UltraTech International for potential DOE applications to non-intrusively breach inner confinement layers (poly bags/packaging) within transuranic (TRU) waste drums. This system provides a lower cost/risk approach to mitigate hydrogen gas concentration buildup limitations on transport of high alpha activity organic transuranic wastes. Four evolving overpack design configurations and two materials (low carbon steel and 300 series stainless) were considered and evaluated using non-linear finite element model analyses of structural response. Properties comparisons show that 300-series stainless is required to provide assurance of ductility and structural integrity at both room and cryogenic temperatures. The overpack designs were analyzed for five accidental drop impact orientations onto an unyielding surface (dropped flat on bottom, bottom corner, side, top corner, and top). The first three design configurations failed the bottom and top corner drop orientations (flat bottom, top, and side plates breached or underwent material failure). The fourth design utilized a protruding rim-ring (skirt) below the overpack’s bottom plate and above the overpack’s lid plate to absorb much of the impact energy and maintained structural integrity under all accidental drop loads at both room and cryogenic temperature conditions. Selected drop testing of the final design will be required to confirm design performance.

  5. Campus Sustainability Planetary Health Ecological Design Social and Environmental Enterprise Incuba-tion EcoVillages Sustainable Food Systems Ecoliteracy Solutions Journal Campus Systems Model Energy

    E-Print Network [OSTI]

    Hayden, Nancy J.

    Villages Sustainable Food Systems Ecoliteracy Solutions Journal Campus Systems Model Energy Conservation, Efficiency1 Campus Sustainability Planetary Health Ecological Design Social and Environmental Enterprise Incuba- tion EcoVillages Sustainable Food Systems Ecoliteracy Solutions Journal Campus Systems Model

  6. American Institute of Aeronautics and Astronautics Modeling and Simulation in the Design of a Lunar Rover

    E-Print Network [OSTI]

    of the suspension system is developed using the software package Dymola and the modeling language Modelica

  7. Study of natural ventilation design by integrating the multi-zone model with CFD simulation

    E-Print Network [OSTI]

    Tan, Gang, 1974-

    2005-01-01

    Natural ventilation is widely applied in sustainable building design because of its energy saving, indoor air qualify and indoor thermal environment improvement. It is important for architects and engineers to accurately ...

  8. Risk Management in Product Design: Current State, Conceptual Model and Future Research

    E-Print Network [OSTI]

    Oehmen, Josef

    Risk management is an important element of product design. It helps to minimize the project- and product-related risks such as project budget and schedule overrun, or missing product cost and quality targets. Risk management ...

  9. Dynamic Modeling and Analysis for Design of Memristive and Static Random Access Memories 

    E-Print Network [OSTI]

    Ho, Yenpo

    2014-08-27

    . By starting from basic memristor device equations, this work aims to develop a comprehensive set of properties and design equations for memristor based memory. The introduced schemes are specifically targeting key device properties relevant to memory...

  10. Models and solution approaches for intermodal and less-than-truckload network design with load consolidations 

    E-Print Network [OSTI]

    Agrahari, Homarjun

    2009-05-15

    Logistics and supply chain problems arising in the context of intermodal transportation and less-than-truckload (LTL) network design typically require commodities to be consolidated and shipped via the most economical route ...

  11. Advancement of Erosion Testing, Modeling, and Design of Concrete Pavement Subbase Layers 

    E-Print Network [OSTI]

    Jung, Youn Su

    2010-10-12

    Concrete pavement systems have great capacity to provide long service lives; however, if the subbase layer is improperly designed or mismanaged, service life would be diminished significantly since the subbase layer performs ...

  12. Conceptual aircraft design for environmental impact : modeling operations for emissions assessment

    E-Print Network [OSTI]

    King, Daniel J., S.M. Massachusetts Institute of Technology

    2005-01-01

    Decisions that guide technology investment and policy-making for the future of air transportation will be based in part on the tradeoffs between environmental performance and economics. The Environmental Design Space (EDS) ...

  13. An improved blade passage model for estimating off-design axial compressor performance

    E-Print Network [OSTI]

    Brand, Maximilian Lewis

    2013-01-01

    Accurate estimates of multistage axial compressor performance at off-design operating conditions are essential to the determination of key performance metrics of aircraft gas turbine engines, such as fuel burn, thrust ...

  14. Beyond pastoralism : through community gardens to a model of sustainable design and a metaphor of integration

    E-Print Network [OSTI]

    Seitz, John M. (John Martin)

    1993-01-01

    This thesis demonstrates the necessity of looking at cities as a component part of "nature." It seeks a common denominator for sustainable design in three simplified principles and outlines a method for evaluating the built ...

  15. Fast Analog Design Optimization using Regression based Modeling and Genetic Algorithm

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    and Communication Engineering, Oriental University, Indore.1 NanoSystem Design Laboratory, Dept. of Computer Science and Engineering, University of North Texas, USA.2 Department of Computer Science, Oriental University, Indore.3

  16. Model-based design of an ultra high performance concrete support structure for a wind turbine

    E-Print Network [OSTI]

    Wang, Zheng, M. Eng. Massachusetts Institute of Technology

    2007-01-01

    A support tower is the main structure which would support rotor, power transmission and control systems, and elevates the rotating blades above the earth boundary layer. A successful design should ensure safe, efficient ...

  17. Conceptual Design and Physical Model Tests of a Levee-in-Dune Hurricane Barrier 

    E-Print Network [OSTI]

    West, Nicholas Allan

    2014-12-04

    that simulate 100-year storm damage caused by both surge and waves. Dune and beach morphology for each concept is measured through laser profiling techniques, and each concept is evaluated based on calculated erosion and accretion, as well as design...

  18. 2008-01-0709 Modeling Design Concepts under Risk and Uncertainty using

    E-Print Network [OSTI]

    of Toyota Motor Company and its suppliers, that improvements in early-phase decision making can lead to considerable risk. In this paper, we investigate an alternative to approaches that rely on explicit design

  19. Lower power RF transceiver modeling and design for wireless microsensor networks

    E-Print Network [OSTI]

    Wang, Andrew Yu, 1976-

    2005-01-01

    The design of wireless microsensor systems has gained increasing importance for a variety of civil and military applications. With the objective of providing short-range connectivity with significant fault tolerance, these ...

  20. Modeling, Design and Optimization of IC Power Delivery with On-Chip Regulation 

    E-Print Network [OSTI]

    Lai, Suming

    2014-12-11

    becomes rather complicated as a result of complex interactions between multiple active regulators and the large passive subnetwork. Coping with this stability challenge requires new theory and stability-ensuring design practice, as targeted...

  1. SOME ANALYTIC MODELS OF PASSIVE SOLAR BUILDING PERFORMANCE: A THEORETICAL APPROACH TO THE DESIGN OF ENERGY-CONSERVING BUILDINGS

    E-Print Network [OSTI]

    Goldstein, David Baird

    2011-01-01

    widespread application of passive solar designs. To design a°F). OVERALL SUMMARY Passive solar design is one of severalfor a typical passive solar design, rendering this solution

  2. The theoretical model of the design-advertising agency in Almaty, Kazakhstan, based on the experience of the same business in Austin, Texas 

    E-Print Network [OSTI]

    Rozenberg, Julia Alexeevna

    2001-01-01

    This study discussed a theoretical model for the start-up stage of a design-advertising agency in Almaty, Kazakhstan. The model is designed based on the analysis of the same industry in Austin, Texas, USA and takes into account the national context...

  3. Design and Testing of a Heat Transfer Model of a Raccon (Procyon Lotor) in a Closed Tree Den Author(s): Jeffrey Thorkelson and Robert K. Maxwell

    E-Print Network [OSTI]

    Minnesota, University of

    Design and Testing of a Heat Transfer Model of a Raccon (Procyon Lotor) in a Closed Tree Den Author. http://www.jstor.org #12;Ecology (1974) 55: pp. 29-39 DESIGN AND TESTING OF A HEAT TRANSFER MODEL of Ecology and Behavioral Biology, Universityof Minnesota, St. Paul, Minnesota 55101 Aabstract. A heat

  4. A supply chain network design model for biomass co-firing in coal-fired power plants

    SciTech Connect (OSTI)

    Md. S. Roni; Sandra D. Eksioglu; Erin Searcy; Krishna Jha

    2014-01-01

    We propose a framework for designing the supply chain network for biomass co-firing in coal-fired power plants. This framework is inspired by existing practices with products with similar physical characteristics to biomass. We present a hub-and-spoke supply chain network design model for long-haul delivery of biomass. This model is a mixed integer linear program solved using benders decomposition algorithm. Numerical analysis indicates that 100 million tons of biomass are located within 75 miles from a coal plant and could be delivered at $8.53/dry-ton; 60 million tons of biomass are located beyond 75 miles and could be delivered at $36/dry-ton.

  5. Using designer confidence and a dynamic Monte Carlo simulation tool to evaluate uncertainty in system models

    E-Print Network [OSTI]

    Lyons, Jeffrey M. (Jeffrey Michael), 1973-

    2000-01-01

    As the use of distributed engineering models becomes more prevalent, engineers need tools to evaluate the quality of these models and understand how subsystem uncertainty affects predictions of system behavior. This thesis ...

  6. Calculation and design of tunnel ventilation systems using a two-scale modelling approach 

    E-Print Network [OSTI]

    Colella, Francesco; Rein, Guillermo; Borchiellini, Romano; Carvel, Ricky O; Torero, Jose L; Verda, Vittorio

    This paper develops a novel modelling approach for ventilation flow in tunnels at ambient conditions (i.e. cold flow). The complexity of full CFD models of low in tunnels or the inaccuracies of simplistic assumptions are ...

  7. lkansforming Conceptual Models to Object-Oriented Database Designs: Practicalities, Properties, and

    E-Print Network [OSTI]

    have succgsfully used the model we discuss hem in hun- dmds of hours of work with employer of the Utah

  8. New process modeling [sic], design, and control strategies for energy efficiency, high product quality, and improved productivity in the process industries. Final project report

    SciTech Connect (OSTI)

    Ray, W. Harmon

    2002-06-05

    This project was concerned with the development of process design and control strategies for improving energy efficiency, product quality, and productivity in the process industries. In particular, (i) the resilient design and control of chemical reactors, and (ii) the operation of complex processing systems, was investigated. Specific topics studied included new process modeling procedures, nonlinear controller designs, and control strategies for multiunit integrated processes. Both fundamental and immediately applicable results were obtained. The new design and operation results from this project were incorporated into computer-aided design software and disseminated to industry. The principles and design procedures have found their way into industrial practice.

  9. Report on High Performance Building's Energy Modeling, Physical Building Information Modeling for Solar Building Design and Simulation 

    E-Print Network [OSTI]

    Alcocer, J.; Haberl, J. S.

    2012-01-01

    This report was created for the National Science Foundation-Physical Building Information Modeling (NSF-PBIM) project. This report describes the analysis of a solar office building using the following software: the legacy ...

  10. Design Studies of Nb3Sn High-Gradient Quadrupole Models for LARP

    SciTech Connect (OSTI)

    Andreev, Nikolai; Caspi, Shlomo; Dietderich, Daniel; Ferracin, Paolo; Ghosh, Arup; Kashikhin, Vadim; Lietzke, Al; Novitski, Igor; Zlobin, Alexander; McInturff, Alfred; Sabbi, GianLuca

    2007-06-01

    Insertion quadrupoles with large aperture and high gradient are required to achieve the luminosity upgrade goal of 10{sup 35} cm{sup -2} s{sup -1} at the Large Hadron Collider (LHC). In 2004, the US Department of Energy established the LHC Accelerator Research Program (LARP) to develop a technology base for the upgrade. Nb{sub 3}Sn conductor is required in order to operate at high field and with sufficient temperature margin. We report here on the conceptual design studies of a series of 1 m long 'High-gradient Quadrupoles' (HQ) that will explore the magnet performance limits in terms of peak fields, forces and stresses. The HQ design is expected to provide coil peak fields of more than 15 T, corresponding to gradients above 300 T/m in a 90 mm bore. Conductor requirements, magnetic, mechanical and quench protection issues for candidate HQ designs will be presented and discussed.

  11. Elevated Temperature Primary Load Design Method Using Pseudo Elastic-Perfectly Plastic Model

    SciTech Connect (OSTI)

    Carter, Peter [Stress Engineering Services Inc.] [Stress Engineering Services Inc.; Sham, Sam [ORNL] [ORNL; Jetter, Robert I [Consultant] [Consultant

    2012-01-01

    A new primary load design method for elevated temperature service has been developed. Codification of the procedure in an ASME Boiler and Pressure Vessel Code, Section III Code Case is being pursued. The proposed primary load design method is intended to provide the same margins on creep rupture, yielding and creep deformation for a component or structure that are implicit in the allowable stress data. It provides a methodology that does not require stress classification and is also applicable to a full range of temperature above and below the creep regime. Use of elastic-perfectly plastic analysis based on allowable stress with corrections for constraint, steady state stress and creep ductility is described. This approach is intended to ensure that traditional primary stresses are the basis for design, taking into account ductility limits to stress re-distribution and multiaxial rupture criteria.

  12. Designing Computing System Architecture and Models for the HL-LHC era

    E-Print Network [OSTI]

    Lothar Bauerdick; Brian Bockelman; Peter Elmer; Stephen Gowdy; Matevz Tadel; Frank Wuerthwein

    2015-07-20

    This paper describes a programme to study the computing model in CMS after the next long shutdown near the end of the decade.

  13. Designing Computing System Architecture and Models for the HL-LHC era

    E-Print Network [OSTI]

    Bauerdick, Lothar; Elmer, Peter; Gowdy, Stephen; Tadel, Matevz; Wuerthwein, Frank

    2015-01-01

    This paper describes a programme to study the computing model in CMS after the next long shutdown near the end of the decade.

  14. Designing On-Road Vehicle Test Programs for the Development of Effective Vehicle Emission Models

    E-Print Network [OSTI]

    Younglove, T; Scora, G; Barth, M

    2005-01-01

    Uncertainty in Highway Vehicle Emission Factors,” EmissionPrograms for Effective Vehicle Emission Model DevelopmentU.S. EPA’s Mobile Vehicle Emission Simulator) are becoming

  15. Design Studies of Nb3Sn High-Gradient Quadrupole Models for LARP

    E-Print Network [OSTI]

    Andreev, Nikolai

    2008-01-01

    allows increasing the keystone angle, leading to smaller/the TQ model magnets. The cable keystone angle is relativelymm Mid-thickness (bare) mm Keystone angle deg Insulation

  16. DESIGN AND PERFORMANCE OF 40 mm, 6.5 T, COLLARED, COLD-IRON MODEL MAGNETS

    E-Print Network [OSTI]

    Peters, C.

    2010-01-01

    DESIGN AND PERFORMANCE OF 40 MM, 6.5 T, COLLARED, COLD-IRONAND P,E RFORMANCE OF 40 MM, 6.5 T, COLLARED, COLD-IRON MODELmagnet winding is 1.574 inches (40 mm), which is the same as

  17. PASI 2011: Process Modeling and Optimization for Energy and Sustainability Mineral Process Design for

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    environmental and social impact, but keeping profitable operations. · These challenges must be addressed:D:, Giurco D., Green S., 2009, Incorporating sustainable development in the design of mineral processing the environmental impact, both in per tonne of product and on total amount of emissions and reduction. #12

  18. Complex Assembly Variant Design in Agile Manufacturing. Part I: System Architecture and Assembly Modeling Methodology

    E-Print Network [OSTI]

    Nagi, Rakesh

    ;1 Introduction Having experienced Mass Production, Lean Manufacturing, and Follow the Leader, American manufacComplex Assembly Variant Design in Agile Manufacturing. Part I: System Architecture and Assembly 14260, USA March 31, 2004 Abstract In the distributed and horizontally integrated manufacturing

  19. Modeling and design of compact microwave components and systems for wireless communications and power transmission 

    E-Print Network [OSTI]

    Zepeda, Paola

    2004-09-30

    , a multilayer folded line filter is designed at 5.8GHz and compared to planar ring filters. Improved measured bandwidth from 2GHz to 7.5GHz and IL of 1.2dB are obtained with approximately half the size of a planar ring resonator. Thirdly, a simplified...

  20. The Framework of an Optimization Model for the Thermal Design of Building Envelopes 

    E-Print Network [OSTI]

    Al-Homoud, M. S.; Degelman, L. O.; Boyer, L. L.

    1994-01-01

    to the decision making process of building design. In dealing with the building as a thermal system, the proper selection of its components and their relationships can be organized using a systems approach. This can be achieved by coupling an optimization...

  1. Nordic Journal of Computing PRO: A Model for the Design and Analysis of Efficient and

    E-Print Network [OSTI]

    Boyer, Edmond

    Parallel Algorithms Assefaw Hadish Gebremedhin Old Dominion University, USA Jens Gustedt INRIA Lorraine;2 GEBREMEDHIN, GUSTEDT, ESSA¨iDI, GU´ERIN LASSOUS, TELLE an analogous, universally accepted model that has been in the conference paper Gebremedhin et al. [2002]. Here we describe the model in detail, and provide experimental

  2. Relay Network Design in Logistics and Telecommunications: Models and Solution Approaches 

    E-Print Network [OSTI]

    Kewcharoenwong, Panitan

    2011-08-08

    I.1. Background . . . . . . . . . . . . . . . . . . . . . . . . . 3 I.1.1. Full Truckload Transportation . . . . . . . . . . . 3 I.1.2. Telecommunications . . . . . . . . . . . . . . . . . 6 I.1.3. Motivation and Scope of the Dissertation... . . . . . . . . . . . . 69 IV.1.6. Concluding Remarks . . . . . . . . . . . . . . . . 87 IV.2. Model 2: RNDP with Link-Imbalance and Link-Capacity Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . 88 IV.2.1. The Model...

  3. Identification and design of novel polymer-based mechanical transducers: A nano-structural model for thin film indentation

    SciTech Connect (OSTI)

    Villanueva, Joshua; Huang, Qian; Sirbuly, Donald J.

    2014-09-14

    Mechanical characterization is important for understanding small-scale systems and developing devices, particularly at the interface of biology, medicine, and nanotechnology. Yet, monitoring sub-surface forces is challenging with current technologies like atomic force microscopes (AFMs) or optical tweezers due to their probe sizes and sophisticated feedback mechanisms. An alternative transducer design relying on the indentation mechanics of a compressible thin polymer would be an ideal system for more compact and versatile probes, facilitating measurements in situ or in vivo. However, application-specific tuning of a polymer's mechanical properties can be burdensome via experimental optimization. Therefore, efficient transducer design requires a fundamental understanding of how synthetic parameters such as the molecular weight and grafting density influence the bulk material properties that determine the force response. In this work, we apply molecular-level polymer scaling laws to a first order elastic foundation model, relating the conformational state of individual polymer chains to the macroscopic compression of thin film systems. A parameter sweep analysis was conducted to observe predicted model trends under various system conditions and to understand how nano-structural elements influence the material stiffness. We validate the model by comparing predicted force profiles to experimental AFM curves for a real polymer system and show that it has reasonable predictive power for initial estimates of the force response, displaying excellent agreement with experimental force curves. We also present an analysis of the force sensitivity of an example transducer system to demonstrate identification of synthetic protocols based on desired mechanical properties. These results highlight the usefulness of this simple model as an aid for the design of a new class of compact and tunable nanomechanical force transducers.

  4. Design, Modeling and Testing of the Askaryan Radio Array South Pole Autonomous Renewable Power Stations

    E-Print Network [OSTI]

    Besson, D Z; Ratzlaff, K; Young, R

    2014-01-01

    We describe the design, construction and operation of the Askaryan Radio Array (ARA) Autonomous Renewable Power Stations, initially installed at the South Pole in December, 2010 with the goal of providing an independently operating 100 W power source capable of year-round operation in extreme environments. In addition to particle astrophysics applications at the South Pole, such a station can easily be, and has since been, extended to operation elsewhere, as described herein.

  5. Design of a Personalized Lighting Control System Enabled by a Space Model 

    E-Print Network [OSTI]

    Suter, G.; Petrushevski, F.; Sipetic, M.

    2011-01-01

    This paper reports on a research effort to develop a prototype of a personalized lighting control system that adjusts the visual environment based on user preferences. Lighting controllers query a space model to retrieve lighting objects...

  6. A computational approach to spectroscopy of molecular systems : modeling, prediction, and design

    E-Print Network [OSTI]

    Horning, Andrew D. (Andrew Davis)

    2015-01-01

    This thesis describes a series of approaches for modeling spectroscopy of molecular systems in aqueous environments, focusing on proton transfer, water dynamics, and hydrogen bonding interactions. The spectroscopy motivating ...

  7. Protein structure prediction, fold recognition, homology modeling and design rely mainly on statistical effective energy

    E-Print Network [OSTI]

    Lazaridis, Themis

    on statistical effective energy functions. Although the theoretical foundation of such functions is not clear physical effective energy function SEEF statistical effective energy function Introduction Approaches augmented by implicit solvation models, provide physical effective energy functions that are beginning

  8. An optimization model for strategic supply chain design under stochastic capacity disruptions 

    E-Print Network [OSTI]

    Luna Coronado, Jaime

    2009-05-15

    .6. Numerical Example ...................................................................................... 54 6. OPTIMIZATION PROCEDURE ....................................................................... 60 6.1. Sample Average Approximation (SAA... ................................................................................ 66 7. IMPLEMENTATION AND NUMERICAL EXAMPLES????? ???.. 70 7.1. Model Implementation ................................................................................. 71 7.2. Numerical Examples...

  9. Physical Building Information Modeling for Solar Building Design and Simulation- Annual Report 2011 

    E-Print Network [OSTI]

    Yan, W.; Haberl, J.; Clayton, M.; Jeong, W.; Kim, J.; Kota, S.; Alcocer, J.; Dixit, M.

    2011-01-01

    This report was created for the National Science Foundation-Physical Building Information Modeling (NSF-PBIM) project. This report describes the analysis of a solar office building using the following software: the legacy ...

  10. Design optimization and analysis of coated particle fuel using advanced fuel performance modeling techniques

    E-Print Network [OSTI]

    Soontrapa, Chaiyod

    2005-01-01

    Modifying material properties provides another approach to optimize coated particle fuel used in pebble bed reactors. In this study, the MIT fuel performance model (TIMCOAT) was applied after benchmarking against the ...

  11. Models and Solution Approaches for Emergency Response Network Design Integrating Supply and Demand Sides 

    E-Print Network [OSTI]

    Dalal, Jyotirmoy

    2014-12-02

    . Our model captures the trade-offs between system cost and critical time to start relief distribution, and can aid an emergency manager in strategic decision making under various uncertainties. Our third study combines the stochastic and robust...

  12. A versatile computer model for the design and analysis of electric and hybrid vehicles 

    E-Print Network [OSTI]

    Stevens, Kenneth Michael

    1996-01-01

    by operating the internal combustion engine over its entire speed range. The simulation results indicate that both algorithms can successfully maintain the battery state of charge over the given drive-cycle. Finally, conclusions about the model...

  13. Modeling and Designing Heterogeneous Systems Felice Balarin 1 , Luciano Lavagno 1 , Claudio Passerone 2 , Alberto

    E-Print Network [OSTI]

    Sangiovanni-Vincentelli, Alberto

    -CPU implementation platforms, critical safety needs and hard deadlines #12; are typical of the automotive world#12;cation models and tools have emerged only in a few areas, namely telecommunications and automotive

  14. Model reduction for active control design using multiple-point Arnoldi methods

    E-Print Network [OSTI]

    Lassaux, G.

    A multiple-point Arnoldi method is derived for model reduction of computational fluid dynamic systems. By choosing the number of frequency interpolation points and the number of Arnoldi vectors at each frequency point, the ...

  15. Designing Safe Lithium-Ion Battery Packs Using Thermal Abuse Models (Presentation)

    SciTech Connect (OSTI)

    Pesaran, A. A.; Kim, G. H.; Smith, K.; Darcy, E.

    2008-12-01

    NREL and NASA developed a thermal-electrical model that resolves PTC and cell behavior under external shorting, now being used to evaluate safety margins of battery packs for spacesuit applications.

  16. Robust design of control charts for autocorrelated processes with model uncertainty 

    E-Print Network [OSTI]

    Lee, Hyun Cheol

    2005-11-01

    Statistical process control (SPC) procedures suitable for autocorrelated processes have been extensively investigated in recent years. The most popular method is the residual-based control chart. To implement this method, a time series model, which...

  17. Contact and channel modelling to support early design of technical systems

    E-Print Network [OSTI]

    Albers, Albert; Braun, Thomas; Clarkson, P. John; Enkler, Hans-Georg; Wynn, David C.

    and complex models. For instance, the sub-systems can be individually opened and closed per double-click, and the software expands and contracts the grid appropriately to ensure that all other sub-systems in the model remain appropriately located above... mechanical engineering at Universität Karlsruhe (TH) from 2000 to 2005. He has been working as a research associate at the Institute for Product Development Karlsruhe since January 2006. His research work focuses on simulation and optimization of molded...

  18. System Design Description and Requirements for Modeling the Off-Gas Systems for Fuel Recycling Facilities

    SciTech Connect (OSTI)

    Daryl R. Haefner; Jack D. Law; Troy J. Tranter

    2010-08-01

    This document provides descriptions of the off-gases evolved during spent nuclear fuel processing and the systems used to capture the gases of concern. Two reprocessing techniques are discussed, namely aqueous separations and electrochemical (pyrochemical) processing. The unit operations associated with each process are described in enough detail so that computer models to mimic their behavior can be developed. The document also lists the general requirements for the desired computer models.

  19. Models for the Configuration and Integrity of Partially Oxidized Fuel Rod Cladding at High Temperatures - Final Design Report

    SciTech Connect (OSTI)

    Siefken, Larry James

    1999-02-01

    Models were designed to resolve deficiencies in the SCDAP/RELAP5/MOD3.2 calculations of the configuration and integrity of hot, partially oxidized cladding. The modeling was improved in five areas. First, the configuration defined for melted metallic cladding retained by an adjacent oxide layer was improved. Second, the empirical model to account for the effect on oxidation of intact cladding is not significantly reduced by the presence of a rather high concentration of relocated material. Third, models for the dissolution of the oxide layer by the metallic layer were implemented into the code. Fourth, a model was added to calculate the thermal stress applied to the oxide layer by the temperature gradient across the oxide layer and to compare this stress to the ultimate strength of the oxide layer. Fifth, a new rule based on theoretical and experimental results was established for identifying the regions of a fuel rod with oxidation of both the inside and outside surfaces of the cladding. The assessment of these models and their integration into SCDAP/RELAP5 showed that the calculated axial distribution in cladding oxidation and relocation are in significantly better agreement with experimental results than is currently the case. The modeling changes account for three aspects of behavior that were not previously calculated correctly. The implementation of these models eliminates to a significant extent the tendency of the SCDAP/RELAP5 code to overpredict the extent of oxidation of the upper part of fuel rods and to underpredict the extent of oxidation of the lower part of fuel rods and the part with a high concentration of relocated material.

  20. Models for the configuration and integrity of partially oxidized fuel rod cladding at high temperatures -- Final Design Report

    SciTech Connect (OSTI)

    Siefken, L.J.

    1999-01-01

    Models were designed to resolve deficiencies in the SCDAP/RELAP5/MOD3.2 calculations of the configuration and integrity of hot, partially oxidized cladding. The modeling was improved in five areas. First, the configuration defined for melted metallic cladding retained by an adjacent oxide layer was improved. Second, the empirical model to account for the effect on oxidation of intact cladding is not significantly reduced by the presence of a rather high concentration of relocated material. Third, models for the dissolution of the oxide layer by the metallic layer were implemented into the code. Fourth, a model was added to calculate the thermal stress applied to the oxide layer by the temperature gradient across the oxide layer and to compare this stress to the ultimate strength of the oxide layer. Fifth, a new rule based on theoretical and experimental results was established for identifying the regions of a fuel rod with oxidation of both the inside and outside surfaces of the cladding. The assessment of these models and their integration into SCDAP/RELAP5 showed that the calculated axial distribution in cladding oxidation and relocation are in significantly better agreement with experimental results than is currently the case. The modeling changes account for three aspects of behavior that were not previously calculated correctly. The implementation of these models eliminates to a significant extent the tendency of the SCDAP/RELAP5 code to overpredict the extent of oxidation of the upper part of fuel rods and to underpredict the extent of oxidation of the lower part of fuel rods and the part with a high concentration of relocated material.

  1. BLENDING STUDY FOR SRR SALT DISPOSITION INTEGRATION: TANK 50H SCALE-MODELING AND COMPUTER-MODELING FOR BLENDING PUMP DESIGN, PHASE 2

    SciTech Connect (OSTI)

    Leishear, R.; Poirier, M.; Fowley, M.

    2011-05-26

    The Salt Disposition Integration (SDI) portfolio of projects provides the infrastructure within existing Liquid Waste facilities to support the startup and long term operation of the Salt Waste Processing Facility (SWPF). Within SDI, the Blend and Feed Project will equip existing waste tanks in the Tank Farms to serve as Blend Tanks where 300,000-800,000 gallons of salt solution will be blended in 1.3 million gallon tanks and qualified for use as feedstock for SWPF. Blending requires the miscible salt solutions from potentially multiple source tanks per batch to be well mixed without disturbing settled sludge solids that may be present in a Blend Tank. Disturbing solids may be problematic both from a feed quality perspective as well as from a process safety perspective where hydrogen release from the sludge is a potential flammability concern. To develop the necessary technical basis for the design and operation of blending equipment, Savannah River National Laboratory (SRNL) completed scaled blending and transfer pump tests and computational fluid dynamics (CFD) modeling. A 94 inch diameter pilot-scale blending tank, including tank internals such as the blending pump, transfer pump, removable cooling coils, and center column, were used in this research. The test tank represents a 1/10.85 scaled version of an 85 foot diameter, Type IIIA, nuclear waste tank that may be typical of Blend Tanks used in SDI. Specifically, Tank 50 was selected as the tank to be modeled per the SRR, Project Engineering Manager. SRNL blending tests investigated various fixed position, non-rotating, dual nozzle pump designs, including a blending pump model provided by the blend pump vendor, Curtiss Wright (CW). Primary research goals were to assess blending times and to evaluate incipient sludge disturbance for waste tanks. Incipient sludge disturbance was defined by SRR and SRNL as minor blending of settled sludge from the tank bottom into suspension due to blending pump operation, where the sludge level was shown to remain constant. To experimentally model the sludge layer, a very thin, pourable, sludge simulant was conservatively used for all testing. To experimentally model the liquid, supernate layer above the sludge in waste tanks, two salt solution simulants were used, which provided a bounding range of supernate properties. One solution was water (H{sub 2}O + NaOH), and the other was an inhibited, more viscous salt solution. The research performed and data obtained significantly advances the understanding of fluid mechanics, mixing theory and CFD modeling for nuclear waste tanks by benchmarking CFD results to actual experimental data. This research significantly bridges the gap between previous CFD models and actual field experiences in real waste tanks. A finding of the 2009, DOE, Slurry Retrieval, Pipeline Transport and Plugging, and Mixing Workshop was that CFD models were inadequate to assess blending processes in nuclear waste tanks. One recommendation from that Workshop was that a validation, or bench marking program be performed for CFD modeling versus experiment. This research provided experimental data to validate and correct CFD models as they apply to mixing and blending in nuclear waste tanks. Extensive SDI research was a significant step toward bench marking and applying CFD modeling. This research showed that CFD models not only agreed with experiment, but demonstrated that the large variance in actual experimental data accounts for misunderstood discrepancies between CFD models and experiments. Having documented this finding, SRNL was able to provide correction factors to be used with CFD models to statistically bound full scale CFD results. Through the use of pilot scale tests performed for both types of pumps and available engineering literature, SRNL demonstrated how to effectively apply CFD results to salt batch mixing in full scale waste tanks. In other words, CFD models were in error prior to development of experimental correction factors determined during this research, which provided a technique to use CFD models fo

  2. Mechanical Design Engineer | Princeton Plasma Physics Lab

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

    diagnostics instrumentationoptics design SKILLS: Machine, design, heat transfer and structural design, Parametric modeling experience, Knowledge of manufacturing techniques,...

  3. Kinetic and Performance Studies of the Regeneration Phase of Model Pt/Ba/Rh NOx Traps for Design and Optimization

    SciTech Connect (OSTI)

    Michael Harold; Vemuri Balakotaiah

    2010-05-31

    In this project a combined experimental and theoretical approach was taken to advance our understanding of lean NOx trap (LNT) technology. Fundamental kinetics studies were carried out of model LNT catalysts containing variable loadings of precious metals (Pt, Rh), and storage components (BaO, CeO{sub 2}). The Temporal Analysis of Products (TAP) reactor provided transient data under well-characterized conditions for both powder and monolith catalysts, enabling the identification of key reaction pathways and estimation of the corresponding kinetic parameters. The performance of model NOx storage and reduction (NSR) monolith catalysts were evaluated in a bench scale NOx trap using synthetic exhaust, with attention placed on the effect of the pulse timing and composition on the instantaneous and cycle-averaged product distributions. From these experiments we formulated a global model that predicts the main spatio-temporal features of the LNT and a mechanistic-based microkinetic models that incorporates a detailed understanding of the chemistry and predicts more detailed selectivity features of the LNT. The NOx trap models were used to determine its ability to simulate bench-scale data and ultimately to evaluate alternative LNT designs and operating strategies. The four-year project led to the training of several doctoral students and the dissemination of the findings as 47 presentations in conferences, catalysis societies, and academic departments as well 23 manuscripts in peer-reviewed journals. A condensed review of NOx storage and reduction was published in an encyclopedia of technology.

  4. The production-assembly-distribution system design problem: modeling and solution approaches 

    E-Print Network [OSTI]

    Liang, Dong

    2009-05-15

    used to make p ( 2 p ). Similarly, material flows are always transferred from facility 1 f to facility f and then to facility 2 f ; that is, ____________ *Part of this section is reprinted with permission from Wilhelm, W. E., D. Liang, B. R. T.... Vasudeva, D. Warrier, X. Zhu, S. Bulusu (2005) Design of international assembly sys- tems and their supply chains under NAFTA. Transportation Research Part E, 41, 467- 493. doi:10.1016/j.tre.2005.06.002 21 the corresponding facility relationship 12 f ff...

  5. EXPERIMENTAL DESIGN APPLICATIONS FOR MODELING AND ASSESSING CARBON DIOXIDE SEQUESTRATION IN SALINE AQUIFERS

    SciTech Connect (OSTI)

    Rogers, John

    2014-08-31

    This project was a computer modeling effort to couple reservoir simulation and ED/RSM using Sensitivity Analysis, Uncertainty Analysis, and Optimization Methods, to assess geologic, geochemical, geomechanical, and rock-fluid effects and factors on CO2 injectivity, capacity, and plume migration. The project objective was to develop proxy models to simplify the highly complex coupled geochemical and geomechanical models in the utilization and storage of CO2 in the subsurface. The goals were to investigate and prove the feasibility of the ED/RSM processes and engineering development, and bridge the gaps regarding the uncertainty and unknowns of the many geochemical and geomechanical interacting parameters in the development and operation of anthropogenic CO2 sequestration and storage sites. The bottleneck in this workflow is the high computational effort of reactive transport simulation models and large number of input variables to optimize with ED/RSM techniques. The project was not to develop the reactive transport, geomechanical, or ED/RSM software, but was to use what was commercially and/or publically available as a proof of concept to generate proxy or surrogate models. A detailed geologic and petrographic mineral assemblage and geologic structure of the doubly plunging anticline was defined using the USDOE RMOTC formations of interest data (e.g., Lower Sundance, Crow Mountain, Alcova Limestone, and Red Peak). The assemblage of 23 minerals was primarily developed from literature data and petrophysical (well log) analysis. The assemblage and structure was input into a commercial reactive transport simulator to predict the effects of CO2 injection and complex reactions with the reservoir rock. Significant impediments were encountered during the execution phase of the project. The only known commercial reactive transport simulator was incapable of simulating complex geochemistry modeled in this project. Significant effort and project funding was expended to determine the limitations of both the commercial simulator and the Lawrence Berkeley National Laboratory (LBNL) R&D simulator, TOUGHREACT available to the project. A simplified layer cake model approximating the volume of the RMOTC targeted reservoirs was defined with 1-3 minerals eventually modeled with limited success. Modeling reactive transport in porous media requires significant computational power. In this project, up to 24 processors were used to model a limited mineral set of 1-3 minerals. In addition, geomechanical aspects of injecting CO2 into closed, semi-open, and open systems in various well completion methods was simulated. Enhanced Oil Recovery (EOR) as a storage method was not modeled. A robust and stable simulation dataset or base case was developed and used to create a master dataset with embedded instructions for input to the ED/RSM software. Little success was achieved toward the objective of the project using the commercial simulator or the LBNL simulator versions available during the time of this project. Several hundred realizations were run with the commercial simulator and ED/RSM software, most having convergence problems and terminating prematurely. A proxy model for full field CO2 injection sequestration utilization and storage was not capable of being developed with software available for this project. Though the chemistry is reasonably known and understood, based on the amount of effort and huge computational time required, predicting CO2 sequestration storage capacity in geologic formations to within the program goals of ±30% proved unsuccessful.

  6. Abstract: The paper discusses model development aspects for electronic design automation using Virtual

    E-Print Network [OSTI]

    Petriu, Emil M.

    configurations - often in a much shorter time than would be required to physically build and test a prototype closely the reality. Advanced computation techniques are needed to reduce the execution time of the models by its usual 3D geometric shape, material property and safety-envelopes defining the 3D geometric space

  7. Validation of and enhancements to an operating-speed-based geometric design consistency evaluation model 

    E-Print Network [OSTI]

    Collins, Kent Michael

    1995-01-01

    .05 significance level. Analysis of observed 85th percentile speeds revealed that the current speed-profile model fits the observed data reasonably well. Hypothesis tests of mean observed 85th percentile speeds on tangents resulted in the conclusion that the mean...

  8. Conversion of methanol to light olefins on SAPO-34: kinetic modeling and reactor design 

    E-Print Network [OSTI]

    Al Wahabi, Saeed M. H.

    2005-02-17

    is very large. To reduce this number the rate parameters related to the steps on the acid sites of the catalyst were modeled in terms of transition state theory and statistical thermodynamics. Use was made of the single event concept to account...

  9. The following are appendices A, B1 and B2 of our paper, "Integrated Process Modeling and Product Design of Biodiesel Manufacturing", that appears in the Industrial and

    E-Print Network [OSTI]

    Liu, Y. A.

    Design of Biodiesel Manufacturing", that appears in the Industrial and Engineering Chemistry Research a Biodiesel Process Model To access NIST TDE Data Engine in Aspen Plus version 2006.5 or V7.0 Step 1. Enter

  10. Cognitive models applied to human effectiveness in national security environments (ergonomics of augmented cognition system design and application).

    SciTech Connect (OSTI)

    Ntuen, Celestine; Winchester, Woodrow III

    2004-06-01

    In complex simulation systems where humans interact with computer-generated agents, information display and the interplay of virtual agents have become dominant media and modalities of interface design. This design strategy is reflected in augmented reality (AR), an environment where humans interact with computer-generated agents in real-time. AR systems can generate large amount of information, multiple solutions in less time, and perform far better in time-constrained problem solving. The capabilities of AR have been leveraged to augment cognition in human information processing. In this sort of augmented cognition (AC) work system, while technology has become the main source for information acquisition from the environment, the human sensory and memory capacities have failed to cope with the magnitude and scale of information they encounter. This situation generates opportunity for excessive cognitive workloads, a major factor in degraded human performance. From the human effectiveness point of view, research is needed to develop, model, and validate simulation tools that can measure the effectiveness of an AR technology used to support the amplification of human cognition. These tools will allow us to predict human performance for tasks executed under an AC tool construct. This paper presents an exploration of ergonomics issues relevant to AR and AC systems design. Additionally, proposed research to investigate those ergonomic issues is discussed.

  11. Impact of Stent Design on In-Stent Stenosis in a Rabbit Iliac Artery Model

    SciTech Connect (OSTI)

    Sommer, C. M., E-mail: christof.sommer@med.uni-heidelberg.de; Grenacher, L.; Stampfl, U. [University Hospital Heidelberg, Department of Diagnostic and Interventional Radiology (Germany); Arnegger, F. U. [University Hospital Heidelberg, Department of General, Visceral and Transplantation Surgery (Germany); Rehnitz, C.; Thierjung, H. [University Hospital Heidelberg, Department of Diagnostic and Interventional Radiology (Germany); Stampfl, S. [University Hospital Cologne, Department of Diagnostic Radiology (Germany); Berger, I. [University Hospital Heidelberg, Department of Pathology (Germany); Richter, G. M.; Kauczor, H. U.; Radeleff, B. A. [University Hospital Heidelberg, Department of Diagnostic and Interventional Radiology (Germany)

    2010-06-15

    The purpose of this study was to evaluate the impact of stent design on in-stent stenosis in rabbit iliac arteries. Four different types of stent were implanted in rabbit iliac arteries, being different in stent design (crown or wave) and strut thickness (50 or 100 {mu}m). Ten stents of each type were implanted. Each animal received one crown and one wave stent with the same strut thickness. Follow-up was either 12 weeks (n = 10 rabbits) or 24 weeks (n = 10 rabbits). Primary study end points were angiographic and microscopic in-stent stenosis. Secondary study end points were vessel injury, vascular inflammation, and stent endothelialization. Average stent diameter, relative stent overdilation, average and minimal luminal diameter, and relative average and maximum luminal loss were not significantly different. However, a trend to higher relative stent overdilation was recognized in crown stents compared to wave stents. A trend toward higher average and minimal luminal diameter and lower relative average and maximum luminal loss was recognized in crown stents compared to wave stents with a strut thickness of 100 {mu}m. Neointimal height, relative luminal area stenosis, injury score, inflammation score, and endothelialization score were not significantly different. However, a trend toward higher neointimal height was recognized in crown stents compared to wave stents with a strut thickness of 50 {mu}m and a follow-up of 24 weeks. In conclusion, in this study, crown stents seem to trigger neointima. However, the optimized radial force might equalize the theoretically higher tendency for restenosis in crown stents. In this context, also more favorable positive remodeling in crown stents could be important.

  12. Models to evaluate magnicon architectures and designs suitable for high-perveance beams

    SciTech Connect (OSTI)

    Rees, D.E.

    1994-03-01

    The magnicon, a new high-power, radio frequency (rf) deflection- modulated amplifier, was recently developed at the Institute for Nuclear Physics in Novosibirsk, Russia. The first magnicon achieved a peak output power of 2.6 MW for 50-{mu}s pulses at a frequency of 915 MHz with a dc-to-rf conversion efficiency of 73%. The conversion efficiency achieved by the original magnicon represents a significant improvement over state-of-the-art conventional velocity- and density-modulated devices. Therefore, if properly exploited, the magnicon could substantially reduce the operating expenses of industrial, scientific, and military facilities that require large amounts of rf power. This dissertation describes the operational principles of the magnicon, provides small-signal analytical theory (where practical), presents a large-signal numerical model to characterize magnicon performance, and then utilizes this model to investigate the characteristics of the component magnicon structures. Using these modeling tools, the first-generation magnicon architecture is analyzed for its performance sensitivity to electron-beam size and is found to support beams of only limited diameter. Finally, an alternate magnicon geometry, called a ``uniform-field`` magnicon, is presented and shown to support beams of larger diameter.

  13. Reactor physics methods, models, and applications used to support the conceptual design of the Advanced Neutron Source

    SciTech Connect (OSTI)

    Gehin, J.C.; Worley, B.A.; Renier, J.P.; Wemple, C.A.; Jahshan, S.N.; Ryskammp, J.M.

    1995-08-01

    This report summarizes the neutronics analysis performed during 1991 and 1992 in support of characterization of the conceptual design of the Advanced Neutron Source (ANS). The methods used in the analysis, parametric studies, and key results supporting the design and safety evaluations of the conceptual design are presented. The analysis approach used during the conceptual design phase followed the same approach used in early ANS evaluations: (1) a strong reliance on Monte Carlo theory for beginning-of-cycle reactor performance calculations and (2) a reliance on few-group diffusion theory for reactor fuel cycle analysis and for evaluation of reactor performance at specific time steps over the fuel cycle. The Monte Carlo analysis was carried out using the MCNP continuous-energy code, and the few- group diffusion theory calculations were performed using the VENTURE and PDQ code systems. The MCNP code was used primarily for its capability to model the reflector components in realistic geometries as well as the inherent circumvention of cross-section processing requirements and use of energy-collapsed cross sections. The MCNP code was used for evaluations of reflector component reactivity effects and of heat loads in these components. The code was also used as a benchmark comparison against the diffusion-theory estimates of key reactor parameters such as region fluxes, control rod worths, reactivity coefficients, and material worths. The VENTURE and PDQ codes were used to provide independent evaluations of burnup effects, power distributions, and small perturbation worths. The performance and safety calculations performed over the subject time period are summarized, and key results are provided. The key results include flux and power distributions over the fuel cycle, silicon production rates, fuel burnup rates, component reactivities, control rod worths, component heat loads, shutdown reactivity margins, reactivity coefficients, and isotope production rates.

  14. Design, testing and two-dimensional flow modeling of a multiple-disk fan

    SciTech Connect (OSTI)

    Engin, Tahsin; Oezdemir, Mustafa; Cesmeci, Sevki [Department of Mechanical Engineering, The University of Sakarya, Esentepe Campus, 54187 Sakarya (Turkey)

    2009-11-15

    A multiple-disk Tesla type fan has been designed, tested and analyzed two-dimensionally using the conservation of angular momentum principle. Experimental results showed that such multiple-disk fans exhibited exceptionally low performance characteristics, which could be attributed to the low viscosity, tangential nature of the flow, and large mechanical energy losses at both suction and discharge sections that are comparable to the total input power. By means of theoretical analysis, local and overall shearing stresses on the disk surfaces have been determined based on tangential and radial velocity distributions of the air flow of different volume flow rates at prescribed disk spaces and rotational speeds. Then the total power transmitted by rotating disks to air flow, and the power acquired by the air flow in the gap due to transfer of angular momentum have been obtained by numerically integrating shearing stresses over the disk surfaces. Using the measured shaft and hydraulic powers, these quantities were utilized to evaluate mechanical energy losses associated with the suction and discharge sections of the fan. (author)

  15. Initial Requirements for Gas-Cooled Fast Reactor (GFR) System Design, Performance, and Safety Analysis Models

    SciTech Connect (OSTI)

    Kevan D. Weaver; Thomas Y. C. Wei

    2004-08-01

    The gas-cooled fast reactor (GFR) was chosen as one of the Generation IV nuclear reactor systems to be developed based on its excellent potential for sustainability through reduction of the volume and radio toxicity of both its own fuel and other spent nuclear fuel, and for extending/utilizing uranium resources orders of magnitude beyond what the current open fuel cycle can realize. In addition, energy conversion at high thermal efficiency is possible with the current designs being considered, thus increasing the economic benefit of the GFR. However, research and development challenges include the ability to use passive decay heat removal systems during accident conditions, survivability of fuels and in-core materials under extreme temperatures and radiation, and economical and efficient fuel cycle processes. Nevertheless, the GFR was chosen as one of only six Generation IV systems to be pursued based on its ability to meet the Generation IV goals in sustainability, economics, safety and reliability, proliferation resistance and physical protection.

  16. Theory, modeling and instrumentation for materials by design: Proceedings of workshop

    SciTech Connect (OSTI)

    Allen, R.E.; Cocke, D.L.; Eberhardt, J.J.; Wilson, A.

    1984-01-01

    The following topics are contained in this volume: how can materials theory benefit from supercomputers and vice-versa; the materials of xerography; relationship between ab initio and semiempirical theories of electronic structure and renormalization group and the statistical mechanics of polymer systems; ab initio calculations of materials properties; metals in intimate contact; lateral interaction in adsorption: revelations from phase transitions; quantum model of thermal desorption and laser stimulated desorption; extended fine structure in appearance potential spectroscopy as a probe of solid surfaces; structural aspects of band offsets at heterojunction interfaces; multiconfigurational Green's function approach to quantum chemistry; wavefunctions and charge densities for defects in solids: a success for semiempirical theory; empirical methods for predicting the phase diagrams of intermetallic alloys; theoretical considerations regarding impurities in silicon and the chemisorption of simple molecules on Ni; improved Kohn-Sham exchange potential; structural stability calculations for films and crystals; semiempirical molecular orbital modeling of catalytic reactions including promoter effects; theoretical studies of chemical reactions: hydrolysis of formaldehyde; electronic structure calculations for low coverage adlayers; present status of the many-body problem; atomic scattering as a probe of physical adsorption; and, discussion of theoretical techniques in quantum chemistry and solid state physics.

  17. Development of Computational Tools for Metabolic Model Curation, Flux Elucidation and Strain Design

    SciTech Connect (OSTI)

    Maranas, Costas D

    2012-05-21

    An overarching goal of the Department of EnergyÂ? mission is the efficient deployment and engineering of microbial and plant systems to enable biomass conversion in pursuit of high energy density liquid biofuels. This has spurred the pace at which new organisms are sequenced and annotated. This torrent of genomic information has opened the door to understanding metabolism in not just skeletal pathways and a handful of microorganisms but for truly genome-scale reconstructions derived for hundreds of microbes and plants. Understanding and redirecting metabolism is crucial because metabolic fluxes are unique descriptors of cellular physiology that directly assess the current cellular state and quantify the effect of genetic engineering interventions. At the same time, however, trying to keep pace with the rate of genomic data generation has ushered in a number of modeling and computational challenges related to (i) the automated assembly, testing and correction of genome-scale metabolic models, (ii) metabolic flux elucidation using labeled isotopes, and (iii) comprehensive identification of engineering interventions leading to the desired metabolism redirection.

  18. Integrating digital human modeling into virtual environment for ergonomic oriented design

    E-Print Network [OSTI]

    Ma, Liang; Bennis, Fouad; Hu, Bo; Zhang, Wei

    2010-01-01

    Virtual human simulation integrated into virtual reality applications is mainly used for virtual representation of the user in virtual environment or for interactions between the user and the virtual avatar for cognitive tasks. In this paper, in order to prevent musculoskeletal disorders, the integration of virtual human simulation and VR application is presented to facilitate physical ergonomic evaluation, especially for physical fatigue evaluation of a given population. Immersive working environments are created to avoid expensive physical mock-up in conventional evaluation methods. Peripheral motion capture systems are used to capture natural movements and then to simulate the physical operations in virtual human simulation. Physical aspects of human's movement are then analyzed to determine the effort level of each key joint using inverse kinematics. The physical fatigue level of each joint is further analyzed by integrating a fatigue and recovery model on the basis of physical task parameters. All the pr...

  19. An investigation of constraint-based component-modeling for knowledge representation in computer-aided conceptual design

    E-Print Network [OSTI]

    Kolb, Mark A.

    1990-01-01

    The earliest computer programs used for engineering design focused on detailed geometric design. Subsequently, computer programs for algorithmically performing the preliminary design of specific well-defined classes of ...

  20. Cogeneration and community design: performance based model for optimization of the design of U.S. residential communities utilizing cogeneration systems in cold climates 

    E-Print Network [OSTI]

    Rashed Ali Atta, Hazem Mohamed

    2009-06-02

    typology, 5) envelope and building systems' efficiencies, 6) renewable energy utilization, 7) cogeneration system type, 8) size, and 9) operation strategy. Based on this, combinations of design characteristics achieving an optimum system performance were...

  1. Investigations on Repository Near-Field Thermal Modeling - Repository Science/Thermal Load Management & Design Concepts (M41UF033302)

    SciTech Connect (OSTI)

    Sutton, M; Blink, J A; Fratoni, M; Greenberg, H R; Ross, A D

    2011-07-15

    The various layers of material from the waste package (such as components of the engineered barrier system and the host rock surface) to a given distance within the rock wall at a given distance can be described as concentric circles with varying thermal properties (see Figure 5.1-1). The selected model approach examines the contributions of the waste package, axial waste package neighbors and lateral neighboring emplacement drifts (see Section 5.2.1 and Appendix H, Section 2). In clay and deep borehole media, the peak temperature is driven by the central waste package whereas, in granite and salt, the contribution to the temperature rise by adjacent (lateral) waste packages in drift or emplacement borehole lines is dominant at the time of the peak temperature. Mathematical models generated using Mathcad software provide insight into the effects of changing waste package spacing for six waste forms, namely UOX, MOX, co-extraction, new extraction, E-Chem ceramic and E-Chem metal in four different geologic media (granite, clay, salt and deep borehole). Each scenario includes thermal conductivity and diffusivity for each layer between the waste package and the host rock, dimensions of representative repository designs (such as waste package spacing, drift or emplacement borehole spacing, waste package dimensions and layer thickness), and decay heat curves generated from knowledge of the contents of a given waste form after 10, 50, 100 and 200 years of surface storage. Key results generated for each scenario include rock temperature at a given time calculated at a given radius from the central waste package (Section 5.2.1 and Appendix H, Section 3), the corresponding temperature at the interface of the waste package and EBS material, and at each EBS layer in between (Section 5.2.2 and Appendix H, Section 4). This information is vital to understand the implications of repository design (waste package capacity, surface storage time, waste package spacing, and emplacement drift or borehole spacing) by comparing the peak temperature to the thermal limits of the concentric layers surrounding the waste package; specifically 100 C for the bentonite buffer in granite and clay repositories, 100 C for rock wall in a clay repository and 200 C at the rock wall for a salt repository. These thermal limits are both preliminary and approximate, and serve as a means to evaluate design options rather than determining compliance for licensing situations. The thermal behavior of a salt repository is more difficult to model because it is not a concentric geometry and because the crushed salt backfill initially has a much higher thermal resistance than intact salt. Three models were investigated, namely a waste package in complete contact with crushed salt, secondly a waste package in contact with intact salt, and thirdly a waste package in contact with 75% intact and 25% crushed salt. The latter model best depicts emplacement of a waste package in the corner of an intact salt alcove and subsequently covered with crushed salt backfill to the angle of repose. The most conservative model (crushed salt) had temperatures much higher than the other models and although bounding, is too conservative to use. The most realistic model (75/25) had only a small temperature difference from the simplest (non-conservative, intact salt) model, and is the one chosen in this report (see Section 5.2.3). A trade-study investigating three key variables (surface storage time, waste package capacity and waste package spacing) is important to understand and design a repository. Waste package heat can be reduced by storing for longer periods prior to emplacement, or by reducing the number of assemblies or canisters within that waste package. Waste package spacing can be altered to optimize the thermal load without exceeding the thermal limits of the host rock or EBS components. By examining each of these variables, repository footprint (and therefore cost) can be optimized. For this report, the layout was fixed for each geologic medium based on prior published designs in

  2. Design wiki: a system for design sharing

    E-Print Network [OSTI]

    Design wiki: a system for design sharing Wael A. Abdelhameed, Yoshihiro Kobayashi #12;Wael of Bahrain. His research areas are 3D Modeling Systems, Computing Architecture, Virtual Reality, Design Process, Visual Design Thinking and Digital and Manual Media Interaction. Yoshihiro Kobayashi is a Faculty

  3. Applying Human-performance Models to Designing and Evaluating Nuclear Power Plants: Review Guidance and Technical Basis

    SciTech Connect (OSTI)

    O'Hara, J.M.

    2009-11-30

    Human performance models (HPMs) are simulations of human behavior with which we can predict human performance. Designers use them to support their human factors engineering (HFE) programs for a wide range of complex systems, including commercial nuclear power plants. Applicants to U.S. Nuclear Regulatory Commission (NRC) can use HPMs for design certifications, operating licenses, and license amendments. In the context of nuclear-plant safety, it is important to assure that HPMs are verified and validated, and their usage is consistent with their intended purpose. Using HPMs improperly may generate misleading or incorrect information, entailing safety concerns. The objective of this research was to develop guidance to support the NRC staff's reviews of an applicant's use of HPMs in an HFE program. The guidance is divided into three topical areas: (1) HPM Verification, (2) HPM Validation, and (3) User Interface Verification. Following this guidance will help ensure the benefits of HPMs are achieved in a technically sound, defensible manner. During the course of developing this guidance, I identified several issues that could not be addressed; they also are discussed.

  4. 6 7division of engineering & applied science ENGenious ISSUE 8 2011 SNAP SHOTSSNAP SHOTS

    E-Print Network [OSTI]

    Haile, Sossina M.

    Solar Decathlon. The Solar Decathlon challenges collegiate teams to design, build, and operate solar,visitkiss.caltech.edu/workshops/space-challenge2011. LEAD:Launch of Summer Engineering and Computer Science Institute Building upon Caltech's mission and staff,parents,and representatives from Apple. Formoreinformation,visitcms.caltech.edu/news/389. Solar

  5. Physical control oriented model of large scale refrigerators to synthesize advanced control schemes. Design, validation, and first control results

    SciTech Connect (OSTI)

    Bonne, François; Bonnay, Patrick [INAC, SBT, UMR-E 9004 CEA/UJF-Grenoble, 17 rue des Martyrs, 38054 Grenoble (France); Alamir, Mazen [Gipsa-Lab, Control Systems Department, CNRS-University of Grenoble, 11, rue des Mathématiques, BP 46, 38402 Saint Martin d'Hères (France)

    2014-01-29

    In this paper, a physical method to obtain control-oriented dynamical models of large scale cryogenic refrigerators is proposed, in order to synthesize model-based advanced control schemes. These schemes aim to replace classical user experience designed approaches usually based on many independent PI controllers. This is particularly useful in the case where cryoplants are submitted to large pulsed thermal loads, expected to take place in the cryogenic cooling systems of future fusion reactors such as the International Thermonuclear Experimental Reactor (ITER) or the Japan Torus-60 Super Advanced Fusion Experiment (JT-60SA). Advanced control schemes lead to a better perturbation immunity and rejection, to offer a safer utilization of cryoplants. The paper gives details on how basic components used in the field of large scale helium refrigeration (especially those present on the 400W @1.8K helium test facility at CEA-Grenoble) are modeled and assembled to obtain the complete dynamic description of controllable subsystems of the refrigerator (controllable subsystems are namely the Joule-Thompson Cycle, the Brayton Cycle, the Liquid Nitrogen Precooling Unit and the Warm Compression Station). The complete 400W @1.8K (in the 400W @4.4K configuration) helium test facility model is then validated against experimental data and the optimal control of both the Joule-Thompson valve and the turbine valve is proposed, to stabilize the plant under highly variable thermals loads. This work is partially supported through the European Fusion Development Agreement (EFDA) Goal Oriented Training Program, task agreement WP10-GOT-GIRO.

  6. Design Editorial Design Innovation

    E-Print Network [OSTI]

    Papalambros, Panos

    juxtaposition of innovation versus invention: "Invention is the first occurrence of an idea for a new product such as innovation strategies, product design, service inno- vation, cutting-edge designers, design awards, and green design. Much of that perspective on innovation is then tied to industrial or product design, often

  7. Model based multivariable controller for large scale compression stations. Design and experimental validation on the LHC 18KW cryorefrigerator

    SciTech Connect (OSTI)

    Bonne, François; Bonnay, Patrick [INAC, SBT, UMR-E 9004 CEA/UJF-Grenoble, 17 rue des Martyrs, 38054 Grenoble (France); Alamir, Mazen [Gipsa-Lab, Control Systems Department, CNRS-University of Grenoble, 11, rue des Mathématiques, BP 46, 38402 Saint Martin d'Hères (France); Bradu, Benjamin [CERN, CH-1211 Genève 23 (Switzerland)

    2014-01-29

    In this paper, a multivariable model-based non-linear controller for Warm Compression Stations (WCS) is proposed. The strategy is to replace all the PID loops controlling the WCS with an optimally designed model-based multivariable loop. This new strategy leads to high stability and fast disturbance rejection such as those induced by a turbine or a compressor stop, a key-aspect in the case of large scale cryogenic refrigeration. The proposed control scheme can be used to have precise control of every pressure in normal operation or to stabilize and control the cryoplant under high variation of thermal loads (such as a pulsed heat load expected to take place in future fusion reactors such as those expected in the cryogenic cooling systems of the International Thermonuclear Experimental Reactor ITER or the Japan Torus-60 Super Advanced fusion experiment JT-60SA). The paper details how to set the WCS model up to synthesize the Linear Quadratic Optimal feedback gain and how to use it. After preliminary tuning at CEA-Grenoble on the 400W@1.8K helium test facility, the controller has been implemented on a Schneider PLC and fully tested first on the CERN's real-time simulator. Then, it was experimentally validated on a real CERN cryoplant. The efficiency of the solution is experimentally assessed using a reasonable operating scenario of start and stop of compressors and cryogenic turbines. This work is partially supported through the European Fusion Development Agreement (EFDA) Goal Oriented Training Program, task agreement WP10-GOT-GIRO.

  8. Design Editorial Design Intent

    E-Print Network [OSTI]

    Papalambros, Panos

    Journal of Mechanical Design Editorial Design Intent Is this paper suitable for JMD of criteria to answer the question. As editor of JMD, apart from the obvious criteria of quality and research assumed my editorial duties is the paper's design intent. It was in that spirit that I wrote the Design

  9. Secretary Chu Congratulates Solar Decathlon Winners | Department...

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

    faces a choice today: Will we sit on the sidelines and fall behind or will we play to win the clean energy race? Some say this is a race America can't win. They're ready to wave...

  10. Solar Decathlon Opening | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing Tool FitsProjectDataSecretaryDepartment of EnergyDepartment»New Teams!Opening Solar

  11. Solar Decathlon Technology Spotlight: Structural Insulated Panels |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment ofOffice|inWestMayBuilding K-25 cleanup atDepartmentCompetition on

  12. Solar Decathlon Turns Ten | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment ofOffice|inWestMayBuilding K-25 cleanup atDepartmentCompetition onFor

  13. IEEE SYSTEMS JOURNAL, VOL. XX, NO. X, MONTH 2014 1 Functional Model-based Design Methodology for

    E-Print Network [OSTI]

    Al Faruque, Mohammad Abdullah

    Automation (EDA) and wire harness design tools; control engineering by LabView [27], LMS [29], Modelica [34

  14. The development of design factors for heat-strengthened and tempered glass based on the glass failure prediction model 

    E-Print Network [OSTI]

    Oakes, Timothy Andrew

    1991-01-01

    - strengthened and tempered glass are then used for determining the design load after the annealed glass design load is calculated. The widely accepted design factors for heat-strengthened and tempered glass are 2. 0 and 4. 0 respectively. The traditional...-STRENGTHENED AND TEMPERED GLASS DESIGN FACTOR TABLES LOWEST FACTOR WITHIN ASPECT RATIO CHARTS . . . . . . . ~ . ~ . ~ 193 VITA 212 LIST OF FIGURES Page Figure 1 Typical stress profile of tempered and heat-strengthened glass Figure 2 Expected wind velocities on a 50...

  15. Atomic-Scale Design of Iron Fischer-Tropsch Catalysts: A Combined Computational Chemistry, Experimental, and Microkinetic Modeling Approach

    SciTech Connect (OSTI)

    Manos Mavrikakis; James A. Dumesic; Rahul P. Nabar

    2006-09-29

    Work continued on the development of a microkinetic model of Fischer-Tropsch synthesis (FTS) on supported and unsupported Fe catalysts. The following aspects of the FT mechanism on unsupported iron catalysts were investigated on during this third year: (1) the collection of rate data in a Berty CSTR reactor based on sequential design of experiments; (2) CO adsorption and CO-TPD for obtaining the heat of adsorption of CO on polycrystalline iron; and (3) isothermal hydrogenation (IH) after Fischer Tropsch reaction to identify and quantify surface carbonaceous species. Rates of C{sub 2+} formation on unsupported iron catalysts at 220 C and 20 atm correlated well to a Langmuir-Hinshelwood type expression, derived assuming carbon hydrogenation to CH and OH recombination to water to be rate-determining steps. From desorption of molecularly adsorbed CO at different temperatures the heat of adsorption of CO on polycrystalline iron was determined to be 100 kJ/mol. Amounts and types of carbonaceous species formed after FT reaction for 5-10 minutes at 150, 175, 200 and 285 C vary significantly with temperature. Mr. Brian Critchfield completed his M.S. thesis work on a statistically designed study of the kinetics of FTS on 20% Fe/alumina. Preparation of a paper describing this work is in progress. Results of these studies were reported at the Annual Meeting of the Western States Catalysis and at the San Francisco AIChE meeting. In the coming period, studies will focus on quantitative determination of the rates of kinetically-relevant elementary steps on unsupported Fe catalysts with/without K and Pt promoters by SSITKA method. This study will help us to (1) understand effects of promoter and support on elementary kinetic parameters and (2) build a microkinetics model for FTS on iron. Calculations using periodic, self-consistent Density Functional Theory (DFT) methods were performed on models of defected Fe surfaces, most significantly the stepped Fe(211) surface. Binding Energies (BE's), preferred adsorption sites and geometries of all the FTS relevant stable species and intermediates were evaluated. Each elementary step of our reaction model was fully characterized with respect to its thermochemistry and comparisons between the stepped Fe(211) facet and the most-stable Fe(110) facet were established. In most cases the BE's on Fe(211) reflected the trends observed earlier on Fe(110), yet there were significant variations imposed on the underlying trends. Vibrational frequencies were evaluated for the preferred adsorption configurations of each species with the aim of evaluating the entropy-changes and preexponential factors for each elementary step. Kinetic studies were performed for the early steps of FTS (up to CH{sub 4} formation) and CO dissociation. This involved evaluation of the Minimum Energy Pathway (MEP) and activation energy barrier for the steps involved. We concluded that Fe(211) would allow for far more facile CO dissociation in comparison to other Fe catalysts studied so far, but the other FTS steps studied remained mostly unchanged.

  16. 366 PROCEEDINGS OF THE IEEE, VOL. 85, NO. 3, MARCH 1997, PP. 366390 Design of Embedded Systems: Formal Models,

    E-Print Network [OSTI]

    California at Berkeley, University of

    reliability and safety are more important criteria than per- formance. Today, embedded systems are designed366 PROCEEDINGS OF THE IEEE, VOL. 85, NO. 3, MARCH 1997, PP. 366­390 Design of Embedded Systems Sangiovanni-Vincentelli Abstract--This paper addresses the design of reactive real-time embed- ded systems

  17. IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 17, NO. 4, APRIL 1998 305 Numerically Stable Green Function for Modeling and

    E-Print Network [OSTI]

    California at Berkeley, University of

    IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 17, NO. 4, APRIL 1998 305 Numerically Stable Green Function for Modeling and Analysis of Substrate Coupling. Meyer, Fellow, IEEE Abstract-- The Green function over a multilayer substrate is derived by solving

  18. Design ad Modeling of a 17 GHz Photcxxthode RF Gun C. L. Lin, S. C. Chen, J. S. U'urtele, H. Temkin, 13. Danly *

    E-Print Network [OSTI]

    Wurtele, Jonathan

    Design ad Modeling of a 17 GHz Photcxxthode RF Gun C. L. Lin, S. C. Chen, J. S. U'urtele, H. Temkin of a high-frequencv(l7GHz), high accel- erating gradirnt(250hlv/rrl) photocathode RF gun is stud- ied in conventional DC guns followed by RF bunchers have reached their intrin- sic limitations and do not meet

  19. EXTENSION OF EXISTING DESIGN AND SIMULATION MODELS Jeffrey D. Spitler Ph.D., P.E., Andrew D. Chiasson, Cenk Yavuzturk

    E-Print Network [OSTI]

    Engineering Stillwater, OK KEY WORDS design models, ground-source heat pump systems, heat transfer, HVAC originated in 1996 with the aim to reduce the first costs of closed-loop ground-source heat pump systems ground-source heat pump systems and auxiliary components on an hourly or minutely basis have been

  20. A physically-based heat pump model was connected to an optimization program to form a computer code for use in the design of high-efficiency

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;ABSTRACT A physically-based heat pump model was connected to an optimization program to form a computer code for use in the design of high-efficiency heat pumps. The method used allows efficiency of conventional heat pumps, ten variables were optimized while heating capacity was fixed

  1. Design for manufacturability Design verification

    E-Print Network [OSTI]

    Patel, Chintan

    ITRS Design #12;Design · Design for manufacturability · Design verification #12;Design for Manufacturability · Architecture challenges · Logic and circuit challenges · Layout and physical design challenges · Expected to be the source of multiple DFM challenges · Invest in variability reduction or design

  2. An in-depth noise model for giant magnetoresistance current sensors for circuit design and complementary metal–oxide–semiconductor integration

    SciTech Connect (OSTI)

    Roldán, A. Roldán, J. B.; Reig, C.; Cardoso, S.; Cardoso, F.; Ferreira, R.; Freitas, P. P.

    2014-05-07

    Full instrumentation bridges based on spin valve of giant magnetoresistance and magnetic tunnel junction devices have been microfabricated and experimentally characterized from the DC and noise viewpoint. A more realistic model of these devices was obtained in this work, an electrical and thermal model previously developed have been improved in such a way that noise effects are also included. We have implemented the model in a circuit simulator and reproduced the experimental measurements accurately. This provides a more realistic and complete tool for circuit design where magnetoresistive elements are combined with well-known complementary metal–oxide–semiconductor modules.

  3. Development of the Symbolic Manipulator Laboratory modeling package for the kinematic design and optimization of the Future Armor Rearm System robot

    SciTech Connect (OSTI)

    March-Leuba, S.; Jansen, J.F.; Kress, R.L.; Babcock, S.M. ); Dubey, R.V. . Dept. of Mechanical and Aerospace Engineering)

    1992-08-01

    A new program package, Symbolic Manipulator Laboratory (SML), for the automatic generation of both kinematic and static manipulator models in symbolic form is presented. Critical design parameters may be identified and optimized using symbolic models as shown in the sample application presented for the Future Armor Rearm System (FARS) arm. The computer-aided development of the symbolic models yields equations with reduced numerical complexity. Important considerations have been placed on the closed form solutions simplification and on the user friendly operation. The main emphasis of this research is the development of a methodology which is implemented in a computer program capable of generating symbolic kinematic and static forces models of manipulators. The fact that the models are obtained trigonometrically reduced is among the most significant results of this work and the most difficult to implement. Mathematica, a commercial program that allows symbolic manipulation, is used to implement the program package. SML is written such that the user can change any of the subroutines or create new ones easily. To assist the user, an on-line help has been written to make of SML a user friendly package. Some sample applications are presented. The design and optimization of the 5-degrees-of-freedom (DOF) FARS manipulator using SML is discussed. Finally, the kinematic and static models of two different 7-DOF manipulators are calculated symbolically.

  4. Development of the Symbolic Manipulator Laboratory modeling package for the kinematic design and optimization of the Future Armor Rearm System robot. Ammunition Logistics Program

    SciTech Connect (OSTI)

    March-Leuba, S.; Jansen, J.F.; Kress, R.L.; Babcock, S.M.; Dubey, R.V.

    1992-08-01

    A new program package, Symbolic Manipulator Laboratory (SML), for the automatic generation of both kinematic and static manipulator models in symbolic form is presented. Critical design parameters may be identified and optimized using symbolic models as shown in the sample application presented for the Future Armor Rearm System (FARS) arm. The computer-aided development of the symbolic models yields equations with reduced numerical complexity. Important considerations have been placed on the closed form solutions simplification and on the user friendly operation. The main emphasis of this research is the development of a methodology which is implemented in a computer program capable of generating symbolic kinematic and static forces models of manipulators. The fact that the models are obtained trigonometrically reduced is among the most significant results of this work and the most difficult to implement. Mathematica, a commercial program that allows symbolic manipulation, is used to implement the program package. SML is written such that the user can change any of the subroutines or create new ones easily. To assist the user, an on-line help has been written to make of SML a user friendly package. Some sample applications are presented. The design and optimization of the 5-degrees-of-freedom (DOF) FARS manipulator using SML is discussed. Finally, the kinematic and static models of two different 7-DOF manipulators are calculated symbolically.

  5. Exploring the use of Model-Based Systems Engineering (MBSE) to develop systems architectures in naval ship design

    E-Print Network [OSTI]

    Tepper, Nadia A

    2010-01-01

    The U.S. Navy designs and operates the most technologically advanced ships in the world. These ships incorporate the latest in weapons technology, phased array antennas, composite structures, signature reduction, survivability, ...

  6. Dependency models as a basis for analyzing software product platform modularity : a case study in strategic software design rationalization

    E-Print Network [OSTI]

    LaMantia, Matthew J. (Matthew John)

    2006-01-01

    It is broadly accepted among software managers and architects that maintaining the integrity of software designs is important for the long-term health and viability of software product platforms. The use of modular, ...

  7. Unique Airflow Visualization Techniques for the Design and Validation of Above-Plenum Data Center CFD Models

    E-Print Network [OSTI]

    Lloyd, Michael

    One cause for the substantial amount of energy used for data center cooling is poor airflow effects such as hot-aisle to cold-aisle air recirculation. To correct these and to investigate innovative designs that will notably ...

  8. Unique airflow visualization techniques for the design and validation of above-plenum data center CFD models

    E-Print Network [OSTI]

    Lloyd, Michael David, S.M. Massachusetts Institute of Technology

    2010-01-01

    One cause for the substantial amount of energy used for data center cooling is poor airflow effects such as hot-aisle to cold-aisle air recirculation. To correct these and to investigate innovative designs that will notably ...

  9. 1 Design by Autonomous Learning Design by Autonomous Learning

    E-Print Network [OSTI]

    Prabhakar, Sattiraju

    1 Design by Autonomous Learning Design by Autonomous Learning: Modeling Environment for Design Box 123, Broadway NSW 2007, Australia Email: {prabhakar, gjsmith}@socs.uts.edu.au 1. Design by Autonomous Learning An important area of expertise robots can provide is design of artefacts in physical

  10. Review on Biomass Torrefaction Process and Product Properties and Design of Moving Bed Torrefaction System Model Development

    SciTech Connect (OSTI)

    Jaya Shankar Tumuluru; Christopher T. Wright; Shahab Sokhansanj

    2011-08-01

    A Review on Torrefaction Process and Design of Moving Bed Torrefaction System for Biomass Processing Jaya Shankar Tumuluru1, Shahab Sokhansanj2 and Christopher T. Wright1 Idaho National Laboratory Biofuels and Renewable Energy Technologies Department Idaho Falls, Idaho 83415 Oak Ridge National Laboratory Bioenergy Resource and Engineering Systems Group Oak Ridge, TN 37831 Abstract Torrefaction is currently developing as an important preprocessing step to improve the quality of biomass in terms of physical properties, and proximate and ultimate composition. Torrefaction is a slow heating of biomass in an inert or reduced environment to a maximum temperature of 300 C. Torrefaction can also be defined as a group of products resulting from the partially controlled and isothermal pyrolysis of biomass occurring in a temperature range of 200-230 C and 270-280 C. Thus, the process can also be called a mild pyrolysis as it occurs at the lower temperature range of the pyrolysis process. At the end of the torrefaction process, a solid uniform product with lower moisture content and higher energy content than raw biomass is produced. Most of the smoke-producing compounds and other volatiles are removed during torrefaction, which produces a final product that will have a lower mass but a higher heating value. There is a lack of literature on the design aspects of torrefaction reactor and a design sheet for estimating the dimensions of the torrefier based on capacity. This study includes (a) conducting a detailed review on the torrefaction of biomass in terms of understanding the process, product properties, off-gas compositions, and methods used, and (b) to design a moving bed torrefier, taking into account the basic fundamental heat and mass transfer calculations. Specific objectives include calculating the dimensions like diameter and height of the moving packed bed torrefier for different capacities ranging from 25-1000 kg/hr, designing the heat loads and gas flow rates, and developing an interactive excel sheet where the user can define design specifications.

  11. Evaluation Study for Large Prismatic Lithium-Ion Cell Designs Using Multi-Scale Multi-Dimensional Battery Model (Presentation)

    SciTech Connect (OSTI)

    Kim, G. H.; Smith, K.

    2009-05-01

    Addresses battery requirements for electric vehicles using a model that evaluates physical-chemical processes in lithium-ion batteries, from atomic variations to vehicle interface controls.

  12. Conversion of cellulosic wastes to liquid hydrocarbon fuels: Vol. 6, The modeling and design of a staged indirect liquefaction reactor: Final report

    SciTech Connect (OSTI)

    Kuester, J.L.

    1986-11-01

    A staged reactor was designed to convert biomass to useful fuels. The reactor consists of three stages. The first stage is a concentric combustor/pyrolyzer system where the biomass is gasified in a fluidized bed at high temperatures in the absence of oxygen. The second stage is a cyclonic scrubber where particulates and condensable materials are removed from the gas stream while the gas is cooled. In the final stage the gas undergoes a Fischer-Tropsch synthesis in a fluidized bed or slurry reactor. Mathematical models of the system were developed and used to create computer programs that would predict the behavior of the bed. The models were based on fundamental phenomena and were used to predict key dimensions of the staged reactor system. A transparent plastic, full-scale, cold flow reactor simulator was built using the models' predictions. The simulator was used to refine the models and determine the operating characteristics of the reactor. The design was determined to be workable and potentially useful. The reactor was, however, difficult to operate and would require extensive automated control systems.

  13. Elements of a pragmatic approach for dealing with bias and uncertainty in experiments through predictions : experiment design and data conditioning; %22real space%22 model validation and conditioning; hierarchical modeling and extrapolative prediction.

    SciTech Connect (OSTI)

    Romero, Vicente Jose

    2011-11-01

    This report explores some important considerations in devising a practical and consistent framework and methodology for utilizing experiments and experimental data to support modeling and prediction. A pragmatic and versatile 'Real Space' approach is outlined for confronting experimental and modeling bias and uncertainty to mitigate risk in modeling and prediction. The elements of experiment design and data analysis, data conditioning, model conditioning, model validation, hierarchical modeling, and extrapolative prediction under uncertainty are examined. An appreciation can be gained for the constraints and difficulties at play in devising a viable end-to-end methodology. Rationale is given for the various choices underlying the Real Space end-to-end approach. The approach adopts and refines some elements and constructs from the literature and adds pivotal new elements and constructs. Crucially, the approach reflects a pragmatism and versatility derived from working many industrial-scale problems involving complex physics and constitutive models, steady-state and time-varying nonlinear behavior and boundary conditions, and various types of uncertainty in experiments and models. The framework benefits from a broad exposure to integrated experimental and modeling activities in the areas of heat transfer, solid and structural mechanics, irradiated electronics, and combustion in fluids and solids.

  14. Federal and State Structures to Support Financing Utility-Scale Solar Projects and the Business Models Designed to Utilize Them

    SciTech Connect (OSTI)

    Mendelsohn, M.; Kreycik, C.

    2012-04-01

    Utility-scale solar projects have grown rapidly in number and size over the last few years, driven in part by strong renewable portfolio standards (RPS) and federal incentives designed to stimulate investment in renewable energy technologies. This report provides an overview of such policies, as well as the project financial structures they enable, based on industry literature, publicly available data, and questionnaires conducted by the National Renewable Energy Laboratory (NREL).

  15. Thermo-mechanical and neutron lifetime modeling and design of Be pebbles in the neutron multiplier for the LIFE engine

    SciTech Connect (OSTI)

    DeMange, P; Marian, J; de Caro, M S; Caro, A

    2009-03-16

    Concept designs for the laser-initiated fusion/fission engine (LIFE) include a neutron multiplication blanket containing Be pebbles flowing in a molten salt coolant. These pebbles must be designed to withstand the extreme irradiation and temperature conditions in the blanket to enable a safe and cost-effective operation of LIFE. In this work, we develop design criteria for spherical Be pebbles on the basis of their thermomechanical behavior under continued neutron exposure. We consider the effects of high fluence/fast flux on the elastic, thermal and mechanical properties of nuclear-grade Be. Our results suggest a maximum pebble diameter of 30 mm to avoid tensile failure, coated with an anti-corrosive, high-strength metallic shell to avoid failure by pebble contact. Moreover, we find that the operation temperature must always be kept above 450 C to enable creep to relax the stresses induced by swelling, which we estimate to be at least 16 months if uncoated and up to six years when coated. We identify the sources of uncertainty on the properties used and discuss the advantages of new intermetallic beryllides and their use in LIFE's neutron multiplier. To establish Be-pebble lifetimes with improved confidence, reliable experiments to measure irradiation creep must be performed.

  16. Advances in non-heme diiron modeling chemistry : developing functional protein mimics through ligand design and understanding dioxygen activation

    E-Print Network [OSTI]

    Do, Loi Hung

    2011-01-01

    Chapter 1 A comprehensive review of diiron modeling in the Lippard group over the past thirty years is presented. This account describes the different strategies employed to prepare biomimetic complexes of non-heme diiron ...

  17. Multiscale Modeling of Grain Boundary Segregation and Embrittlement in Tungsten for Mechanistic Design of Alloys for Coal Fired Plants

    SciTech Connect (OSTI)

    Luo, Jian; Tomar, Vikas; Zhou, Naixie; Lee, Hongsuk

    2013-06-30

    Based on a recent discovery of premelting-like grain boundary segregation in refractory metals occurring at high temperatures and/or high alloying levels, this project investigated grain boundary segregation and embrittlement in tungsten (W) based alloys. Specifically, new interfacial thermodynamic models have been developed and quantified to predict high-temperature grain boundary segregation in the W-Ni binary alloy and W-Ni-Fe, W-Ni-Ti, W-Ni-Co, W-Ni-Cr, W-Ni-Zr and W-Ni-Nb ternary alloys. The thermodynamic modeling results have been experimentally validated for selected systems. Furthermore, multiscale modeling has been conducted at continuum, atomistic and quantum-mechanical levels to link grain boundary segregation with embrittlement. In summary, this 3-year project has successfully developed a theoretical framework in combination with a multiscale modeling strategy for predicting grain boundary segregation and embrittlement in W based alloys.

  18. Seal inlet disturbance boundary conditions for rotordynamic models and influence of some off-design conditions on labyrinth rotordynamic instability 

    E-Print Network [OSTI]

    Xi, Jinxiang

    2007-04-25

    Systematic parametric studies were performed to better understand seal-inlet rotordynamics. A CFD-perturbation model was employed to compute the seal-inlet flow disturbance quantities. Seal inlet disturbance boundary ...

  19. TRISO Fuel Performance: Modeling, Integration into Mainstream Design Studies, and Application to a Thorium-fueled Fusion-Fission Hybrid Blanket

    SciTech Connect (OSTI)

    Powers, J J

    2011-11-28

    This study focused on creating a new tristructural isotropic (TRISO) coated particle fuel performance model and demonstrating the integration of this model into an existing system of neutronics and heat transfer codes, creating a user-friendly option for including fuel performance analysis within system design optimization and system-level trade-off studies. The end product enables both a deeper understanding and better overall system performance of nuclear energy systems limited or greatly impacted by TRISO fuel performance. A thorium-fueled hybrid fusion-fission Laser Inertial Fusion Energy (LIFE) blanket design was used for illustrating the application of this new capability and demonstrated both the importance of integrating fuel performance calculations into mainstream design studies and the impact that this new integrated analysis had on system-level design decisions. A new TRISO fuel performance model named TRIUNE was developed and verified and validated during this work with a novel methodology established for simulating the actual lifetime of a TRISO particle during repeated passes through a pebble bed. In addition, integrated self-consistent calculations were performed for neutronics depletion analysis, heat transfer calculations, and then fuel performance modeling for a full parametric study that encompassed over 80 different design options that went through all three phases of analysis. Lastly, side studies were performed that included a comparison of thorium and depleted uranium (DU) LIFE blankets as well as some uncertainty quantification work to help guide future experimental work by assessing what material properties in TRISO fuel performance modeling are most in need of improvement. A recommended thorium-fueled hybrid LIFE engine design was identified with an initial fuel load of 20MT of thorium, 15% TRISO packing within the graphite fuel pebbles, and a 20cm neutron multiplier layer with beryllium pebbles in flibe molten salt coolant. It operated at a system power level of 2000 MW{sub th}, took about 3.5 years to reach full plateau power, and was capable of an End of Plateau burnup of 38.7 %FIMA if considering just the neutronic constraints in the system design; however, fuel performance constraints led to a maximum credible burnup of 12.1 %FIMA due to a combination of internal gas pressure and irradiation effects on the TRISO materials (especially PyC) leading to SiC pressure vessel failures. The optimal neutron spectrum for the thorium-fueled blanket options evaluated seemed to favor a hard spectrum (low but non-zero neutron multiplier thicknesses and high TRISO packing fractions) in terms of neutronic performance but the fuel performance constraints demonstrated that a significantly softer spectrum would be needed to decrease the rate of accumulation of fast neutron fluence in order to improve the maximum credible burnup the system could achieve.

  20. A unified theory of engineering design 

    E-Print Network [OSTI]

    Dyas, Scott Patrick

    2007-04-25

    A theoretical model of design, that is universal and has a scientific basis, was developed. By doing so, it is believed that the practice of engineering design can be significantly improved. A better system of modeling designs is the missing...

  1. The Texas Solar D House 

    E-Print Network [OSTI]

    Garrison, M.

    2004-01-01

    The Solar Decathlon provided a national forum for competition among fourteen university student teams, each of which designed, built, and operated a totally solar-powered home with a home office and their transportation ...

  2. Design of active suspension control based upon use of tubular linear motor and quarter-car model 

    E-Print Network [OSTI]

    Allen, Justin Aaron

    2008-10-10

    -2 eliminates dead coil windings and employs high energy product density neodymium-iron-boron (NdFeB) magnets, which increases the force-to-mass ratio, creating a viable and compact solution to providing the force necessary to control... stream_source_info Allen.pdf.txt stream_content_type text/plain stream_size 162705 Content-Encoding UTF-8 stream_name Allen.pdf.txt Content-Type text/plain; charset=UTF-8 DESIGN OF ACTIVE SUSPENSION CONTROL BASED...

  3. Laboratories for the 21st Century: Best Practices; Modeling Exhaust Dispersion for Specifying Acceptable Exhaust/Intake Design (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-09-01

    This guide provides general information on specifying acceptable exhaust and intake designs. It also provides various quantitative approaches that can be used to determine expected concentration levels resulting from exhaust system emissions. In addition, the guide describes methodologies that can be employed to operate laboratory exhaust systems in a safe and energy efficient manner by using variable air volume (VAV) technology. The guide, one in a series on best practices for laboratories, was produced by Laboratories for the 21st Century (Labs21), a joint program of the U.S. Environmental Protection Agency (EPA) and the U.S. Department of Energy (DOE). Geared toward architects, engineers, and facility managers, the guides contain information about technologies and practices to use in designing, constructing, and operating safe, sustainable, high-performance laboratories. Studies show a direct relationship between indoor air quality and the health and productivity of building occupants. Historically, the study and protection of indoor air quality focused on emission sources emanating from within the building. For example, to ensure that the worker is not exposed to toxic chemicals, 'as manufactured' and 'as installed' containment specifications are required for fume hoods. However, emissions from external sources, which may be re-ingested into the building through closed circuiting between the building's exhaust stacks and air intakes, are an often overlooked aspect of indoor air quality.

  4. Atomic-Scale Design of Iron Fischer-Tropsch Catalysts; A Combined Computational Chemistry, Experimental, and Microkinetic Modeling Approach

    SciTech Connect (OSTI)

    Manos Mavrikakis; James Dumesic; Rahul Nabar; Calvin Bartholonew; Hu Zou; Uchenna Paul

    2008-09-29

    This work focuses on (1) searching/summarizing published Fischer-Tropsch synthesis (FTS) mechanistic and kinetic studies of FTS reactions on iron catalysts; (2) preparation and characterization of unsupported iron catalysts with/without potassium/platinum promoters; (3) measurement of H{sub 2} and CO adsorption/dissociation kinetics on iron catalysts using transient methods; (3) analysis of the transient rate data to calculate kinetic parameters of early elementary steps in FTS; (4) construction of a microkinetic model of FTS on iron, and (5) validation of the model from collection of steady-state rate data for FTS on iron catalysts. Three unsupported iron catalysts and three alumina-supported iron catalysts were prepared by non-aqueous-evaporative deposition (NED) or aqueous impregnation (AI) and characterized by chemisorption, BET, temperature-programmed reduction (TPR), extent-of-reduction, XRD, and TEM methods. These catalysts, covering a wide range of dispersions and metal loadings, are well-reduced and relatively thermally stable up to 500-600 C in H{sub 2} and thus ideal for kinetic and mechanistic studies. Kinetic parameters for CO adsorption, CO dissociation, and surface carbon hydrogenation on these catalysts were determined from temperature-programmed desorption (TPD) of CO and temperature programmed surface hydrogenation (TPSR), temperature-programmed hydrogenation (TPH), and isothermal, transient hydrogenation (ITH). A microkinetic model was constructed for the early steps in FTS on polycrystalline iron from the kinetic parameters of elementary steps determined experimentally in this work and from literature values. Steady-state rate data were collected in a Berty reactor and used for validation of the microkinetic model. These rate data were fitted to 'smart' Langmuir-Hinshelwood rate expressions derived from a sequence of elementary steps and using a combination of fitted steady-state parameters and parameters specified from the transient measurements. The results provide a platform for further development of microkinetic models of FTS on Fe and a basis for more precise modeling of FTS activity of Fe catalysts. Calculations using periodic, self-consistent Density Functional Theory (DFT) methods were performed on various realistic models of industrial, Fe-based FTS catalysts. Close-packed, most stable Fe(110) facet was analyzed and subsequently carbide formation was found to be facile leading to the choice of the FeC(110) model representing a Fe facet with a sub-surface C atom. The Pt adatom (Fe{sup Pt}(110)) was found to be the most stable model for our studies into Pt promotion and finally the role of steps was elucidated by recourse to the defected Fe(211) facet. Binding Energies(BEs), preferred adsorption sites and geometries for all FTS relevant stable species and intermediates were evaluated on each model catalyst facet. A mechanistic model (comprising of 32 elementary steps involving 19 species) was constructed and each elementary step therein was fully characterized with respect to its thermochemistry and kinetics. Kinetic calculations involved evaluation of the Minimum Energy Pathways (MEPs) and activation energies (barriers) for each step. Vibrational frequencies were evaluated for the preferred adsorption configuration of each species with the aim of evaluating entropy-changes, pre exponential factors and serving as a useful connection with experimental surface science techniques. Comparative analysis among these four facets revealed important trends in their relative behavior and roles in FTS catalysis. Overall the First Principles Calculations afforded us a new insight into FTS catalysis on Fe and modified-Fe catalysts.

  5. A New EM Algorithm for Maximum Likelihood Estimation in Two-level Structural Equation Models with Arbitrary Sample Designs

    E-Print Network [OSTI]

    Jiajuan Liang; Peter Bentler

    2011-01-01

    The model can be expressed as ( Vgi 9i v v w i t h the basicis given by 5 V = cov I \\Vgi I , J S I , w and the between-value v . g g YgO q+(N Vgi N g Under the basic assumptions B

  6. Modelling Tools for the Efficient Design of New Alloys C J Humphreys and H K D H Bhadeshia

    E-Print Network [OSTI]

    Cambridge, University of

    , neural network modelling, which is ideal to predict the properties of complex systems, for example nickel in materials, which we apply to the intermetallic alloy series NiAl, CoAl and FeAl. We show that density properties are so complex in their dependence on material characteristics that there are no theories

  7. The Power of Mesoscale Modeling... Mul$physics mesoscale simula$on provides a powerful tool for designing materials to

    E-Print Network [OSTI]

    Chen, Long-Qing

    , neutronics, geomechanics, reac+ve transport, microstructure modeling, computa+onal fluid in verba+m from Schwen, D., E. Mar/nez, and A. Caro, J. Nuclear Mater (cv) in UO2 fuel. Also shown are the switching func+on h, the order

  8. A Three-Dimensional Model of Residential Energy Consumer Archetypes for Local Energy Policy Design in the UK

    E-Print Network [OSTI]

    Aickelin, Uwe

    residential energy consumers in the UK by considering property energy efficiency levels, the greenness1 A Three-Dimensional Model of Residential Energy Consumer Archetypes for Local Energy Policy lines of research in residential energy consumption in the UK, i.e. economic/infrastructure, behaviour

  9. SummitView 1.0: a code to automatically generate 3D solid models of surface micro-machining based MEMS designs.

    SciTech Connect (OSTI)

    McBride, Cory L. (Elemental Technologies, American Fort, UT); Yarberry, Victor R.; Schmidt, Rodney Cannon; Meyers, Ray J. (Elemental Technologies, American Fort, UT)

    2006-11-01

    This report describes the SummitView 1.0 computer code developed at Sandia National Laboratories. SummitView is designed to generate a 3D solid model, amenable to visualization and meshing, that represents the end state of a microsystem fabrication process such as the SUMMiT (Sandia Ultra-Planar Multilevel MEMS Technology) V process. Functionally, SummitView performs essentially the same computational task as an earlier code called the 3D Geometry modeler [1]. However, because SummitView is based on 2D instead of 3D data structures and operations, it has significant speed and robustness advantages. As input it requires a definition of both the process itself and the collection of individual 2D masks created by the designer and associated with each of the process steps. The definition of the process is contained in a special process definition file [2] and the 2D masks are contained in MEM format files [3]. The code is written in C++ and consists of a set of classes and routines. The classes represent the geometric data and the SUMMiT V process steps. Classes are provided for the following process steps: Planar Deposition, Planar Etch, Conformal Deposition, Dry Etch, Wet Etch and Release Etch. SummitView is built upon the 2D Boolean library GBL-2D [4], and thus contains all of that library's functionality.

  10. Modeling and Validation of Performance Limitations for the Optimal Design of Interferometric and Intensity-Modulated Fiber Optic Displacement Sensors

    SciTech Connect (OSTI)

    Moro, Erik A.

    2012-06-07

    Optical fiber sensors offer advantages over traditional electromechanical sensors, making them particularly well-suited for certain measurement applications. Generally speaking, optical fiber sensors respond to a desired measurand through modulation of an optical signal's intensity, phase, or wavelength. Practically, non-contacting fiber optic displacement sensors are limited to intensity-modulated and interferometric (or phase-modulated) methodologies. Intensity-modulated fiber optic displacement sensors relate target displacement to a power measurement. The simplest intensity-modulated sensor architectures are not robust to environmental and hardware fluctuations, since such variability may cause changes in the measured power level that falsely indicate target displacement. Differential intensity-modulated sensors have been implemented, offering robustness to such intensity fluctuations, and the speed of these sensors is limited only by the combined speed of the photodetection hardware and the data acquisition system (kHz-MHz). The primary disadvantages of intensity-modulated sensing are the relatively low accuracy (?m-mm for low-power sensors) and the lack of robustness, which consequently must be designed, often with great difficulty, into the sensor's architecture. White light interferometric displacement sensors, on the other hand, offer increased accuracy and robustness. Unlike their monochromatic-interferometer counterparts, white light interferometric sensors offer absolute, unambiguous displacement measurements over large displacement ranges (cm for low-power, 5 mW, sources), necessitating no initial calibration, and requiring no environmental or feedback control. The primary disadvantage of white light interferometric displacement sensors is that their utility in dynamic testing scenarios is limited, both by hardware bandwidth and by their inherent high-sensitivity to Doppler-effects. The decision of whether to use either an intensity-modulated interferometric sensor depends on an appropriate performance function (e.g., desired displacement range, accuracy, robustness, etc.). In this dissertation, the performance limitations of a bundled differential intensity-modulated displacement sensor are analyzed, where the bundling configuration has been designed to optimize performance. The performance limitations of a white light Fabry-Perot displacement sensor are also analyzed. Both these sensors are non-contacting, but they have access to different regions of the performance-space. Further, both these sensors have different degrees of sensitivity to experimental uncertainty. Made in conjunction with careful analysis, the decision of which sensor to deploy need not be an uninformed one.

  11. Fuel Cell Power Model Version 2: Startup Guide, System Designs, and Case Studies. Modeling Electricity, Heat, and Hydrogen Generation from Fuel Cell-Based Distributed Energy Systems

    SciTech Connect (OSTI)

    Steward, D.; Penev, M.; Saur, G.; Becker, W.; Zuboy, J.

    2013-06-01

    This guide helps users get started with the U.S. Department of Energy/National Renewable Energy Laboratory Fuel Cell Power (FCPower) Model Version 2, which is a Microsoft Excel workbook that analyzes the technical and economic aspects of high-temperature fuel cell-based distributed energy systems with the aim of providing consistent, transparent, comparable results. This type of energy system would provide onsite-generated heat and electricity to large end users such as hospitals and office complexes. The hydrogen produced could be used for fueling vehicles or stored for later conversion to electricity.

  12. Alternative energy design toolkit

    E-Print Network [OSTI]

    Sukkasi, Sittha

    2004-01-01

    This thesis concerns the concepts, structure, and applications of the Alternative Energy Design Toolkit. The toolkit is aimed to provide a widely accessible, easy to use, flexible, yet powerful modeling environment for ...

  13. Synchronization and Control in Intrinsic and Designed Computation: An Information-Theoretic Analysis of Competing Models of Stochastic Computation

    E-Print Network [OSTI]

    James P. Crutchfield; Christopher J. Ellison; Ryan G. James; John R. Mahoney

    2010-07-30

    We adapt tools from information theory to analyze how an observer comes to synchronize with the hidden states of a finitary, stationary stochastic process. We show that synchronization is determined by both the process's internal organization and by an observer's model of it. We analyze these components using the convergence of state-block and block-state entropies, comparing them to the previously known convergence properties of the Shannon block entropy. Along the way, we introduce a hierarchy of information quantifiers as derivatives and integrals of these entropies, which parallels a similar hierarchy introduced for block entropy. We also draw out the duality between synchronization properties and a process's controllability. The tools lead to a new classification of a process's alternative representations in terms of minimality, synchronizability, and unifilarity.

  14. Conceptual design of first toroidal electron cyclotron resonance ion source and modeling of ion extraction from it

    E-Print Network [OSTI]

    Caliri, C; Volpe, F A

    2015-01-01

    Electron Cyclotron Resonance Ion Sources (ECRIS) progressed to higher and higher ion currents and charge states by adopting stronger magnetic fields (beneficial for confinement) and proportionally higher ECR frequencies. Further improvements would require the attainment of "triple products" of density, temperature and confinement time comparable with major fusion experiments. For this, we propose a new, toroidal rather than linear, ECRIS geometry, which would at the same time improve confinement and make better use of the magnetic field. Ion extraction is more complicated than from a linear device, but feasible, as our modelling suggests: single-particle tracings showed successful extraction by at least two techniques, making use respectively of a magnetic extractor and of ExB drifts. Additional techniques are briefly discussed.

  15. Risk-Informed Monitoring, Verification and Accounting (RI-MVA). An NRAP White Paper Documenting Methods and a Demonstration Model for Risk-Informed MVA System Design and Operations in Geologic Carbon Sequestration

    SciTech Connect (OSTI)

    Unwin, Stephen D.; Sadovsky, Artyom; Sullivan, E. C.; Anderson, Richard M.

    2011-09-30

    This white paper accompanies a demonstration model that implements methods for the risk-informed design of monitoring, verification and accounting (RI-MVA) systems in geologic carbon sequestration projects. The intent is that this model will ultimately be integrated with, or interfaced with, the National Risk Assessment Partnership (NRAP) integrated assessment model (IAM). The RI-MVA methods described here apply optimization techniques in the analytical environment of NRAP risk profiles to allow systematic identification and comparison of the risk and cost attributes of MVA design options.

  16. Unfolding designable structures

    E-Print Network [OSTI]

    Cristiano L. Dias; Martin Grant

    2005-10-17

    Among an infinite number of possible folds, nature has chosen only about 1000 distinct folds to form protein structures. Theoretical studies suggest that selected folds are intrinsically more designable than others; these selected folds are unusually stable, a property called the designability principle. In this paper we use the 2D hydrophobic-polar lattice model to classify structures according to their designability, and Langevin dynamics to account for their time evolution. We demonstrate that, among all possible folds, the more designable ones are easier to unfold due to their large number of surface-core bonds.

  17. ANNUAL HEATING AND COOLING REQUIREMENTS AND DESIGN DAY PERFORMANCE FOR A RESIDENTIAL MODEL IN SIX CLIMATES: A COMPARISON OF NBSLD, BLAST 2, AND DOE-2.1

    E-Print Network [OSTI]

    Carroll, William L.

    2011-01-01

    for the effects of occupant behavior. Annual cumulativechanges in design and occupant behavior. Secondly, the level

  18. Material-based design computation

    E-Print Network [OSTI]

    Oxman, Neri

    2010-01-01

    The institutionalized separation between form, structure and material, deeply embedded in modernist design theory, paralleled by a methodological partitioning between modeling, analysis and fabrication, resulted in ...

  19. Flow Velocities After Carotid Artery Stenting: Impact of Stent Design. A Fluid Dynamics Study in a Carotid Artery Model with Laser Doppler Anemometry

    SciTech Connect (OSTI)

    Greil, Oliver, E-mail: oliver.greil@roe.med.tu-muenchen.de; Kleinschmidt, Thomas; Weiss, Wolfgang [Technical University of Munich, Department of Interventional Radiology, Klinikum rechts der Isar (Germany); Wolf, Oliver; Heider, Peter [Technical University of Munich, Department of Vascular Surgery, Klinikum rechts der Isar (Germany); Schaffner, Silvio; Gianotti, Marc [Abbott Company, Vascular Devices (Switzerland); Schmid, Thomas; Liepsch, Dieter [University of Applied Science Munich, Laboratory for Fluid Mechanics (Germany); Berger, Hermann [Technical University of Munich, Department of Interventional Radiology, Klinikum rechts der Isar (Germany)

    2005-01-15

    Purpose. To study the influence of a newly developed membrane stent design on flow patterns in a physiologic carotid artery model. Methods. Three different stents were positioned in silicone models of the carotid artery: a stainless steel stent (Wall-stent), a nitinol stent (SelfX), and a nitinol stent with a semipermeable membrane (MembraX). To increase the contact area of the membrane with the vessel wall, another MembranX model was modified at the outflow tract. The membrane consists of a biocompatible silicone-polyurethane copolymer (Elast-Eon) with a pore size of 100 {mu}m. All stents were deployed across the bifurcation and the external carotid artery origin. Flow velocity measurements were performed with laser Doppler anemometry (LDA), using pulsatile flow conditions (Re = 220; flow 0.39 l/min; flow rate ratio ICA:ECA = 70:30) in hemodynamically relevant cross-sections. The hemodynamic changes were analyzed by comparing velocity fluctuations of corresponding flow profiles. Results. The flow rate ratio ICA:ECA shifted significantly from 70/30 to 73.9/26.1 in the MembraX and remained nearly unchanged in the SelfX and Wallstent. There were no changes in the flow patterns at the inflow proximal to the stents. In the stent no relevant changes were found in the SelfX. In the Wallstent the separation zone shifted from the orifice of the ICA to the distal end of the stent. Four millimeters distal to the SelfX and the Wallstent the flow profile returned to normal. In the MembraX an increase in the central slipstreams was found with creation of a flow separation distal to the stent. With a modification of the membrane this flow separation vanished. In the ECA flow disturbances were seen at the inner wall distal to the stent struts in the SelfX and the Wallstent. With the MembraX a calming of flow could be observed in the ECA with a slight loss of flow volume. Conclusions. Stent placement across the carotid artery bifurcation induces alterations of the physiologic flow behavior. Depending on the stent design the flow alterations are located in different regions. All the stents tested were suitable for the carotid bifurcation. The MembraX prototype has shown promising hemodynamic properties ex vivo.

  20. Engitectural Design 

    E-Print Network [OSTI]

    Gagliardi, D. R.

    1996-01-01

    to the mechanical systems of building, and in a hot and humid climate the issues are magnified. Therefore, this paper will discuss the concepts and merits of a new design process called: Engitectural Design. Engitectural Design is the concept of blending the many...

  1. A multiobjective, multidisciplinary design optimization methodology for the conceptual design of distributed satellite systems

    E-Print Network [OSTI]

    Jilla, Cyrus D., 1974-

    2002-01-01

    A multiobjective, multidisciplinary design optimization methodology for mathematically modeling the distributed satellite system (DSS) conceptual design problem as an optimization problem has been developed to advance the ...

  2. Computational RNA Secondary Structure Design

    E-Print Network [OSTI]

    Fournier, John J.F.

    Computational RNA Secondary Structure Design: Empirical Complexity and Improved Methods by Rosal in this thesis is focused on the design of RNA strands that are predicted to fold to a given secondary structure, according to a standard thermodynamic model. The design of RNA structures is important for applications

  3. Proc. ACM/SIGGRAPH Symposium on Solid State Modeling and Applications, Montreal, Quebec, Canada, May 1993 A COMPUTATIONAL APPROACH TO THE DESIGN OF MICROMECHANICAL HINGED STRUCTURES

    E-Print Network [OSTI]

    , May 1993 A COMPUTATIONAL APPROACH TO THE DESIGN OF MICROMECHANICAL HINGED STRUCTURES Karl-Friedrich B for the design of micromechanical hinged structures. These devices Pister et al. 1992 are particularly attractive y describe micromechanical hinged structures, and give an overview on our approach for design

  4. Archaeology in the Kilauea East Rift Zone: Part 1, Land-use model and research design, Kapoho, Kamaili and Kilauea Geothermal Subzones, Puna District, Hawaii Island

    SciTech Connect (OSTI)

    Burtchard, G.C.; Moblo, P.

    1994-07-01

    The Puna Geothermal Resource Subzones (GRS) project area encompasses approximately 22,000 acres centered on the Kilauea East Rift Zone in Puna District, Hawaii Island. The area is divided into three subzones proposed for geothermal power development -- Kilauea Middle East Rift, Kamaili and Kapoho GRS. Throughout the time of human occupation, eruptive episodes along the rift have maintained a dynamic landscape. Periodic volcanic events, for example, have changed the coastline configuration, altered patterns of agriculturally suitable sediments, and created an assortment of periodically active, periodically quiescent, volcanic hazards. Because of the active character of the rift zone, then, the area`s occupants have always been obliged to organize their use of the landscape to accommodate a dynamic mosaic of lava flow types and ages. While the specific configuration of settlements and agricultural areas necessarily changed in response to volcanic events, it is possible to anticipate general patterns in the manner in which populations used the landscape through time. This research design offers a model that predicts the spatial results of long-term land-use patterns and relates them to the character of the archaeological record of that use. In essence, the environmental/land-use model developed here predicts that highest population levels, and hence the greatest abundance and complexity of identifiable prehistoric remains, tended to cluster near the coast at places that maximized access to productive fisheries and agricultural soils. With the possible exception of a few inland settlements, the density of archaeological remains expected to decrease with distance from the coastline. The pattern is generally supported in the regions existing ethnohistoric and archaeological record.

  5. Mechanizing Exploratory Game Design

    E-Print Network [OSTI]

    Smith, Adam Marshall

    2012-01-01

    Game Design . . . . . . . . . . . . . . . . . . . . . . . .1.4.1 Designlevel Design Spaces . . . . . . . . . . . . . . . . . . . .

  6. Using laboratory flow experiments and reactive chemical transport modeling for designing waterflooding of the Agua Fria Reservoir, Poza Rica-Altamira Field, Mexico

    E-Print Network [OSTI]

    Birkle, P.

    2009-01-01

    tratamiento requerido para el agua congénita de la Centralfor Designing Waterflooding of the Agua Fría Reservoir, Pozalong-term waterflooding at Agua Fría. Using analogous core

  7. Performance-Driven Microfabrication-Oriented Methodology for MEMS Conceptual Design with Application in Microfluidic Device Design

    E-Print Network [OSTI]

    Deng, Y.-M.

    Performance and manufacturability are two important issues that must be taken into account during MEMS design. Existing MEMS design models or systems follow a process-driven design paradigm, that is, design starts from the ...

  8. Design of database for automatic example-driven design and assembly of man-made objects

    E-Print Network [OSTI]

    Piñera, J. Keneth (Jorge Keneth)

    2013-01-01

    In this project, we have built a database of models that have been designed such that they can be directly fabricated by a casual user. Each of the models in this database has design specifications up to the screw level, ...

  9. Reliability-based casing design

    SciTech Connect (OSTI)

    Maes, M.A. [Univ. of Calgary, Alberta (Canada). Civil Engineering Dept.; Gulati, K.C.; Johnson, R.C. [Mobil Research and Development Corp., Dallas, TX (United States); McKenna, D.L. [Mobil Producing Nigeria, Lagos (Nigeria); Brand, P.R.; Lewis, D.B. [Mobil E and P Technical Center, Dallas, TX (United States)

    1995-06-01

    The present paper describes the development of reliability-based design criteria for oil and/or gas well casing/tubing. The approach is based on the fundamental principles of limit state design. Limit states for tubulars are discussed and specific techniques for the stochastic modeling of loading and resistance variables are described. Zonation methods and calibration techniques are developed which are geared specifically to the characteristic tubular design for both hydrocarbon drilling and production applications. The application of quantitative risk analysis to the development of risk-consistent design criteria is shown to be a major and necessary step forward in achieving more economic tubular design.

  10. Information Systems Analysis and Design CSC340 2003 John Mylopoulos Database Design --1

    E-Print Network [OSTI]

    Mylopoulos, John

    . Database Design Databases and DBMSDatabases and DBMS Data Models, Hierarchical, Network, RelationalData Models, Hierarchical, Network, Relational Database DesignDatabase Design Restructuring an ER schema, for building and accessing a database e.g., the relational model offers relations (tables) as data structure

  11. Multifidelity methods for multidisciplinary design under uncertainty

    E-Print Network [OSTI]

    Christensen, Daniel Erik

    2012-01-01

    For computational design and analysis tasks, scientists and engineers often have available many different simulation models. The output of each model has an associated uncertainty that is a result of the modeling process. ...

  12. Linking Work Design and Corporate Social Responsibility Through an Exploratory Model for the Interdependency of Work Characteristics and Corporate Social Responsibility Orientation 

    E-Print Network [OSTI]

    Kurup, Priya Darshini

    2012-02-14

    characteristics that can result in desired organizational outcomes. Specifically, in current times, organizations are looking to develop socially responsible outcomes, otherwise referred as corporate social responsibility (CSR). A possible link between work design...

  13. Expansion and user study of CoolVent : inclusion of thermal comfort models in an early-design natural ventilation tool

    E-Print Network [OSTI]

    Rich, Rebecca E. (Rebecca Eileen)

    2011-01-01

    CoolVent, a software design tool for architects, has been improved. The work of Maria- Alejandra Menchaca-B. and colleagues has been improved to include a more robust and intuitive building and window dimensioning scheme, ...

  14. Design Rational

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalent BondingMeeting |Design Competitions Design Competitions National9

  15. * Principal Investigator: Alan E Middleditch, Director, Centre for Geometric Modelling and Design, Brunel University, Uxbridge UB8 3PH, U.K.

    E-Print Network [OSTI]

    Martin, Ralph R.

    , many research issues remain. For example, conversion of boundary models (a.k.a. B-reps) to set-theoretic models (a.k.a. CSG) [Shapiro93], problems due to degeneracy and inaccuracy [Fortune93], and mechanisms

  16. INTERNATIONAL DESIGN CONFERENCE -DESIGN 2004 Dubrovnik, May 18 -21, 2004.

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    to order. These companies are designing their products according to customer specifications, by modifying dimensions and/or parameters. - Family models creation of a part or assembly. 3. Top-down design methodology Top-Down methodology is a problem solving mechanism whereby a given problem is successively broken

  17. Secretary of Energy Moniz Cuts Ribbon, Kicks Off Solar Decathlon...

    Office of Environmental Management (EM)

    are able to tour the houses, gather ideas to use in their own homes, and learn how energy-saving features can help them save money today. The overall winner will be...

  18. DOE's Solar Decathlon to Highlight Innovation, Future Green Jobs...

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

    its own power. The competition focuses on cutting edge energy efficient and renewable energy innovation while providing a unique green jobs training opportunity for each of the...

  19. University of Maryland's "WaterShed" Wins 2011 Solar Decathlon...

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

    each team for the competitions. The other half of the 1,000 total points were awarded for energy balance, energy measurements and student tasks. Though the students didn't stay in...

  20. Solar Decathlon 2013: Life After the Competition | Department...

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

    serves as student housing and university research facilities. | Photo courtesy of the Energy Department. Missouri University of Science and Technology's Chameleon House will join...

  1. Here Comes the Sun: Solar Decathlon Opens To Public Today

    Broader source: Energy.gov [DOE]

    At the National Mall’s West Potomac Park in Washington, D.C., a new type of neighborhood has taken shape. The solar village is on full display with highly-efficient, solar-powered homes on every block.

  2. Solar Decathlon 2013 Infographic: The Path to a Brighter Future |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher iSlide 1 More Documents &1000 Independence<ADepartment of Energy Our

  3. Solar Decathlon: How Do WE Do Efficiency? | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher iSlide 1 More Documents &1000 Independence<ADepartment ofWake of1 of

  4. Department of Energy Considers New Venue for Solar Decathlon 2013 |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-in electricLaboratory |Education at

  5. Energy Department Announces Second Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPL EnergyPlus,DepartmentFederalJuly 8,to WorkDepartment

  6. Energy, Interior Departments Announce New Location for Solar Decathlon 2011

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLfor Innovative SolarSavingsAugust 26, 2013 Energy2006One<Clean|

  7. German Technische Universitat Darmstadt Wins DOE's 2007 Solar Decathlon |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRD Report11, SolarMat 4" |a,- p^AEnergyDepartment

  8. October 14, 2005: 2005 Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy AEnergy Managing853926 NewsORMAT NEVADAEnergy InnovationOctober 14, 2005: 2005

  9. Solar Decathlon 2011: The Visitor's Perspective | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyThe U.S. Department ofEnergy(Department or DOE)of

  10. Solar Decathlon 2013: Meet the Teams | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyThe U.S. Department ofEnergy(Department or DOE)ofEnergy It took six monthsArizona

  11. Solar Decathlon: Appalachian State Wins People's Choice Award |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyThe U.S. Department ofEnergy(Department or DOE)ofEnergy It tookRemarksDepartment

  12. Solar Decathlon 2013 Infographic: The Path to a Brighter Future |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4Energy Smooth BromeBuildings |Solar PoolU.S.Department

  13. Solar Decathlon 2013: Building Skills for Future Careers | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4Energy Smooth BromeBuildings |Solar

  14. Solar Decathlon 2013: Building Skills for Future Careers | Department of

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effect Photovoltaics -7541 *ImpactScience of SignaturesSoft0 SoilsEnergy

  15. Solar Decathlon 2015: Let the Competition Begin | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effect Photovoltaics -7541 *ImpactScience of SignaturesSoft0Raising MoreLet the

  16. Webtrends Archives by Fiscal Year - Solar Decathlon | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing ToolInternationalReport FY2014 - Employers139Webmaster Webmaster Web RequestsEnergy

  17. Middlebury Students Practice 'Self-Reliance' with Solar Decathlon House |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOE SafetyofDepartment. "National Midcourse

  18. Checking in on Solar Decathlon 2011 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a lCaribElectricSouthApplying caulkChapter 9DesertVersion SepOctober,

  19. University of Colorado Wins 2005 Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyThe U.S.Laclede GasEfficiency|Feed|DepartmentThe United States andFrom left toSolar

  20. Vote for Your Favorite Solar Decathlon House | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyThe U.S.Lacledeutilities. TheEnergyEnergy mostJeff EricksontoAll thisVote for