Sample records for decathlon design models

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

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

    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 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.

  3. Miami Students' Solar Decathlon Design Focused on Sustainability...

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

    Communications Specialist, Office of Public Affairs How can I participate? The next Solar Decathlon will be held Sept. 23-Oct. 2, 2011, at the National Mall's West Potomac Park...

  4. 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.

    2012-04-01T23:59:59.000Z

    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.

  5. 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.

    2008-01-01T23:59:59.000Z

    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 could grow into varying...

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

    SciTech Connect (OSTI)

    Wassmer, M.; Warner, C.

    2005-01-01T23:59:59.000Z

    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.

  7. Solar Decathlon: Powered by the Sun (Revised)

    SciTech Connect (OSTI)

    Not Available

    2005-08-01T23:59:59.000Z

    The Solar Decathlon is a collegiate competition to design and build the most energy efficient, solar-powered house. It is also an event on the National Mall in Washington D.C. to which the public is invited. This gatefold brochure describes the Solar Decathlon 2005 competition and event, including a schedule of activities.

  8. Solar Decathlon 2013

    ScienceCinema (OSTI)

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

    2014-01-10T23:59:59.000Z

    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.

  9. Solar Decathlon 2013

    SciTech Connect (OSTI)

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

    2013-10-22T23:59:59.000Z

    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.

  10. Solar Decathlon 2005: The Event in Review

    SciTech Connect (OSTI)

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

    2006-06-01T23:59:59.000Z

    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.

  11. 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

  12. 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 onYouTube YouTube Note: Since the.pdfBreakingMayDepartment of Energy Ready,Smart

  13. 2005 Solar Decathlon (Competition Program)

    SciTech Connect (OSTI)

    Not Available

    2005-10-01T23:59:59.000Z

    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.

  14. Solar Decathlon | Department of Energy

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

    13, 2013 8:45PM EDT Orange County Great Park, Irvine California The U.S. Department of Energy Solar Decathlon is an award-winning program that challenges collegiate teams to...

  15. 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

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

    E-Print Network [OSTI]

    Ramirez, Eduardo

    2008-06-10T23:59:59.000Z

    This report presents the design, construction, and operation of a 100% solar-powered house from an engineering perspective. This includes energy simulation results, selection of systems, design of systems, assembly of systems, integration between...

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

    E-Print Network [OSTI]

    Ramirez, E. J.

    This report presents the design, construction, and operation of a 100% solar-powered house from an engineering perspective. This includes energy simulation results, selection of systems, design of systems, assembly of systems, integration between...

  18. 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.

    configurations, yet be completely powered from the solar radiation that falls on the footprint of the structure. To accomplish this, the Texas A&M team designed and simulated varying designs using building energy simulation (DOE-2), solar thermal analysis (F...

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

    E-Print Network [OSTI]

    Ramirez, Eduardo

    2008-06-10T23:59:59.000Z

    ..................................... 97 Figure 107: Trying to Fix Broken Pressure Switch in main Supply Pump ........................................... 98 Figure 108: Cutting Pieces of a Plastic Bladder Tank in order to Patch the Main Supply Tank Using a Heat Gun... Hot Water Thermal Production • For Roof • For Walls Yes No Modify • Building Design • PV System • Solar Thermal System Energy Balance? Systems Parameters Weather Data C. Systems Description • Space Conditioning • Water Heating • Lighting...

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

    E-Print Network [OSTI]

    Ramirez, E. J.

    2008-01-01T23:59:59.000Z

    ..................................... 97 Figure 107: Trying to Fix Broken Pressure Switch in main Supply Pump ........................................... 98 Figure 108: Cutting Pieces of a Plastic Bladder Tank in order to Patch the Main Supply Tank Using a Heat Gun... Hot Water Thermal Production • For Roof • For Walls Yes No Modify • Building Design • PV System • Solar Thermal System Energy Balance? Systems Parameters Weather Data C. Systems Description • Space Conditioning • Water Heating • Lighting...

  1. 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.

  2. Solar Decathlon Update from Secretary Chu

    ScienceCinema (OSTI)

    Chu, Steven

    2013-05-29T23:59:59.000Z

    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/

  3. Housing Innovation Awards at the Solar Decathlon

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

    the Energy Efficiency Market Buildings.Energy.gov Housing Innovation Awards at the Solar Decathlon Breakfast Presented by BASF Friday, October 4, 2013 8:30-10:30 a.m. Historic...

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

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

    (Courtesy of Michael Bacchler) Alexis Powers EDITOR'S NOTE: Originally posted on the Solar Decathlon News Blog on September 19, 2011. Editor's Note: This post is one of a series...

  5. Solar Decathlon 2011: The Visitor's Perspective | Department...

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

    morning I boarded a shuttle headed towards West Potomac Park, site of this year's Solar Decathlon competition. I wanted to experience the event, now in its 5th iteration,...

  6. Solar Decathlon 2013: Let the Building Begin | Department of...

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

    Solar Decathlon 2013: Let the Building Begin Solar Decathlon 2013: Let the Building Begin September 30, 2013 - 10:45am Addthis Day 7 Construction 1 of 22 Day 7 Construction During...

  7. Solar Decathlon Homes-- They’re Not Just for Show

    Broader source: Energy.gov [DOE]

    Have you ever wondered what happens to Solar Decathlon Houses after the competition? We explore where some of the houses are now.

  8. 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...

  9. A Solar Decathlon Entry for Historic Norfolk | Department of...

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

    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...

  10. 2007 Solar Decathlon: Powered by the Sun (Competition Program)

    SciTech Connect (OSTI)

    Not Available

    2007-09-01T23:59:59.000Z

    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.

  11. Solar Decathlon Opening | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCO OverviewRepositoryManagement | DepartmentImpactWhat Else We Might|Decathlon

  12. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy: Grid Integration NRELCostBuildingModels andProject

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

    Office of Environmental Management (EM)

    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 Disasters August...

  14. Smart Meters Help Balance Energy Consumption at Solar Decathlon

    Office of Energy Efficiency and Renewable Energy (EERE)

    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.

  15. Here Comes the Sun: Solar Decathlon Opens To Public Today | Department...

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

    Here Comes the Sun: Solar Decathlon Opens To Public Today Here Comes the Sun: Solar Decathlon Opens To Public Today September 23, 2011 - 12:53pm Addthis At the National Mall's West...

  16. 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.

    2012-01-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Gordon, Kelly L.; Gilbride, Theresa L.

    2008-05-22T23:59:59.000Z

    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.

  18. Secretary Chu Congratulates Solar Decathlon Winners | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMay 2015ParentsMiddle SchoolPhysics | Department of EnergySolar Decathlon

  19. University of Colorado Wins 2005 Solar Decathlon | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCOSystems Analysis Success|SustainableDepartment of Energy Solar Decathlon

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

    SciTech Connect (OSTI)

    Not Available

    2011-09-01T23:59:59.000Z

    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.

  1. Supporting Diversity at the Solar Decathlon

    Broader source: Energy.gov [DOE]

    It's an honor and a privilege to be selected for grueling hours of hard work, including planning, modeling,  energy research, and construction - at least, it is when it comes to the Department of...

  2. 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.

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

    Energy Savers [EERE]

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

  4. Solar Decathlon Team Using Appalachian Mountain History to Model...

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

    homesteads. Those old farms all had sustainable characteristics in common that created a passive solar strategy like what we use today: they all faced south, and all had deciduous...

  5. University of Maryland Solar Decathlon Team Celebrates with a...

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

    students, if only briefly, to stop for a moment and celebrate their accomplishments in sustainable design. As Allison said, "It's incredibly gratifying to see something we drew...

  6. Solid model design simplification

    SciTech Connect (OSTI)

    Ames, A.L.; Rivera, J.J.; Webb, A.J.; Hensinger, D.M.

    1997-12-01T23:59:59.000Z

    This paper documents an investigation of approaches to improving the quality of Pro/Engineer-created solid model data for use by downstream applications. The investigation identified a number of sources of problems caused by deficiencies in Pro/Engineer`s geometric engine, and developed prototype software capable of detecting many of these problems and guiding users towards simplified, useable models. The prototype software was tested using Sandia production solid models, and provided significant leverage in attacking the simplification problem.

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

    E-Print Network [OSTI]

    Kim, Jonghyun

    2010-10-12T23:59:59.000Z

    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...

  8. 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 DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary ofSmallConfidential,2 Solar Background Document 2Solar

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

    SciTech Connect (OSTI)

    Hamm, Julia; Taylor, Mike

    2008-12-31T23:59:59.000Z

    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.

  10. Design exploration through bidirectional modeling of constraints

    E-Print Network [OSTI]

    Kilian, Axel, 1971-

    2006-01-01T23:59:59.000Z

    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. ...

  11. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9MorganYou areInnovationPriority |

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

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

    Generic EBS Design Concepts and Process Models Implications to EBS Design Optimization Evaluation of Generic EBS Design Concepts and Process Models Implications to EBS Design...

  13. Exploring chaos to model the design process

    E-Print Network [OSTI]

    Sharkawy, Ahmed

    1990-01-01T23:59:59.000Z

    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...

  14. Exploring chaos to model the design process 

    E-Print Network [OSTI]

    Sharkawy, Ahmed

    1990-01-01T23:59:59.000Z

    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...

  15. Design Concept Evaluation Using System Throughput Model

    SciTech Connect (OSTI)

    G. Sequeira; W. M. Nutt Ph.D

    2004-05-28T23:59:59.000Z

    The U.S. Department of Energy (DOE) Office of Civilian Radioactive Waste Management (OCRWM) is currently developing the technical bases to support the submittal of a license application for construction of a geologic repository at Yucca Mountain, Nevada to the U.S. Nuclear Regulatory Commission. The Office of Repository Development (ORD) is responsible for developing the design of the proposed repository surface facilities for the handling of spent nuclear fuel and high level nuclear waste. Preliminary design activities are underway to sufficiently develop the repository surface facilities design for inclusion in the license application. The design continues to evolve to meet mission needs and to satisfy both regulatory and program requirements. A system engineering approach is being used in the design process since the proposed repository facilities are dynamically linked by a series of sub-systems and complex operations. In addition, the proposed repository facility is a major system element of the overall waste management process being developed by the OCRWM. Such an approach includes iterative probabilistic dynamic simulation as an integral part of the design evolution process. A dynamic simulation tool helps to determine if: (1) the mission and design requirements are complete, robust, and well integrated; (2) the design solutions under development meet the design requirements and mission goals; (3) opportunities exist where the system can be improved and/or optimized; and (4) proposed changes to the mission, and design requirements have a positive or negative impact on overall system performance and if design changes may be necessary to satisfy these changes. This paper will discuss the type of simulation employed to model the waste handling operations. It will then discuss the process being used to develop the Yucca Mountain surface facilities model. The latest simulation model and the results of the simulation and how the data were used in the design evolution process will also be discussed. Since the use of dynamic simulation is iterative and integral to the design effort, future activities will also be summarized. The paper will close discussing lessons learned from applying dynamic simulation to designing complex systems, and will discuss what pitfalls to avoid and recommendations for developing flexibility in system model development.

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

    E-Print Network [OSTI]

    Flanagan, Genevieve (Genevieve Elise Cregar)

    2012-01-01T23:59:59.000Z

    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 ...

  17. 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...

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

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

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

  19. Physical layer model design for wireless networks 

    E-Print Network [OSTI]

    Yu, Yi

    2009-06-02T23:59:59.000Z

    the relationship between wireless protocol design and physical layer models, it is necessary to first comprehend the network architecture, which groups the communication functions into related and manageable layers. The journal model is IEEE Transactions... data to the network format and vice versa. It is intended to provide independence from different represen- tations of application layer data. The session layer deals with sessions and connections between applications. It manages conversations between...

  20. Legrand BBBP Implementation Model Designed for Results

    E-Print Network [OSTI]

    Horton, P.

    2013-01-01T23:59:59.000Z

    SUSTAINABILITY Legrand North America Designed for Results BBBP Implementation Model Pete Horton, VP Business Development, Legrand/Watt Stopper Industrial Energy Technology Conference May 23, 2013 May 23, 20133 ESL-IE-13-05-21 Proceedings... of the Thrity-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 SUSTAINABILITY Overview ? Company Introduction ? Our Commitment ? BBBP Initiative ? Our Strategy ?Our Implementation Model: Sub Metering ? Sub metering Concept...

  1. Solar Decathlon at Home in the D.C. Community | Department of...

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

    townhomes in the Ivy City community that use the Empowerhouse team's passive house design standards. Throughout the entire process -- from the start of the Solar...

  2. CIRP Design Conference 2011 Product Lifecycle Management Model for Design Information Management in

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    CIRP Design Conference 2011 Product Lifecycle Management Model for Design Information Management Product Lifecycle Management (PLM) is one way to improve productivity in all manufacturing companies. Keywords: Product Lifecycle Management, Product Process Organisation Model, Unified Modelling Language 1

  3. Analytical model for Stirling cycle machine design

    E-Print Network [OSTI]

    Formosa, Fabien; 10.1016/j.enconman.2010.02.010

    2013-01-01T23:59:59.000Z

    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.

  4. Solar Decathlon Entry Uses iPad to Monitor Home | Department...

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

    teams to design, build and operate solar-powered houses that are cost-effective, energy-efficient and attractive -- we are profiling each of the 20 teams participating in...

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

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

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

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

    E-Print Network [OSTI]

    Spence, Cliff Alan

    2002-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Han, Sangmok

    2006-01-01T23:59:59.000Z

    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 ...

  8. Modelling and Simulation in Aerodynamic Design

    E-Print Network [OSTI]

    Mosegaard, Klaus

    when it breaks loose from the gear of a wind generator. A common feature of such simulations turbine blade, two design features are important. The aerodynamic design attempts to optimize the blade could si- mulate the bending of the wing under operating con- ditions during one rotation

  9. Development of a room air conditioner design model 

    E-Print Network [OSTI]

    Penson, Steven Brad

    1988-01-01T23:59:59.000Z

    model was developed for this thesis by making major modifications to a heat pump model previously developed by Oak Ridge National Laboratory: (1) Addition of a subcooler, (2) Revision of the capillary tube model, (3) Addition of multi-grooved tubes.... 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...

  10. 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

  11. Biological Development model for the Design of Robust Digital System

    E-Print Network [OSTI]

    Fernandez, Thomas

    Biological Development model for the Design of Robust Digital System Heng Liu Doctor of Philosophy and Keywords i Abstract This thesis presents a biologically-inspired developmental model for the design. The methods presented have been applied to produce a self-repairing two bit multiplier and an autonomous robot

  12. Systems modeling for electric ship design

    E-Print Network [OSTI]

    Soultatis, Charalambos

    2004-01-01T23:59:59.000Z

    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 ...

  13. A MODEL FOR THE DESIGN AND PROGRAMMING OF MULTICORES

    E-Print Network [OSTI]

    Jesshope, Chris

    A MODEL FOR THE DESIGN AND PROGRAMMING OF MULTICORES Microgrid of reconfigurable microthreaded control 12 Summary of the model 15 /. SVP memory model 16 Shared memory 17 Synchronising memory 17 0 model provides a foundation for significant advances i8 both computer architecture as we7 as operating

  14. Critical Simulation Based Evaluation of Thermally Activated Building Systems (TABS) Design Models

    E-Print Network [OSTI]

    Basu, Chandrayee

    2012-01-01T23:59:59.000Z

    of discomfort. Full- factorial design, defined later in thedesign model. Full-factorial design The design scenariosformulated into a full factorial design. In statistics, a

  15. Wind Turbine Design Cost and Scaling Model

    SciTech Connect (OSTI)

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

    2006-12-01T23:59:59.000Z

    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.

  16. Electromagnetic Modelling of Superconducting Sensor Designs

    E-Print Network [OSTI]

    Gerra, Guido

    and the Josephson effect, and an outline of some of the most common SQUID designs. Chapter 3 is dedicated to the computational method that has been employed in the simulations, along with the mathematical formalism adopted and the analytical formulae that have... . Mikhail Khapaev of Moscow State University [16]. Finite element methods are used in a wide range of engineering applications. The basic concept is to map what is usually a continuous function into a discrete set of values, thus enabling a computer...

  17. Modelling approach for the Simulation-Based Preliminary Design of Power Transmissions

    E-Print Network [OSTI]

    Boyer, Edmond

    ). Keywords: ball-screw, flight control, inverse simulation, model based design, Modelica, modelling

  18. 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 ...

  19. Modeling and design of semi-solid flow batteries

    E-Print Network [OSTI]

    Brunini, Victor Eric

    2012-01-01T23:59:59.000Z

    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 ...

  20. Marcel Filoche Seminar: Modeling and Designing Micro-Optoelectronic...

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

    Marcel Filoche Seminar: Modeling and Designing Micro-Optoelectronic Devices in the Real World: The Role of Disorder Apr 15, 2014 | 4:00 PM - 5:00 PM Marcel Filoche Researcher at...

  1. 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

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

    E-Print Network [OSTI]

    Du Toit, Noël Eduard

    2005-01-01T23:59:59.000Z

    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 ...

  3. 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

  4. A Design Model for Subsurface Drip Irrigation in Arizona

    E-Print Network [OSTI]

    Fay, Noah

    and useful tool when applied to the design of subsurface irrigation systems #12;Acknowledgements This projectA Design Model for Subsurface Drip Irrigation in Arizona Michael Liga Advisor: Dr. Don Slack Biosystems Engineering University of Arizona #12;Water Issue Subsurface Drip Irrigation · Benefits ·Increased

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

    E-Print Network [OSTI]

    Gray, Jeffrey G.

    Hybrid Powertrain Design Using a Domain- Specific Modeling Environment Wenzhong Gao1 , Sandeep environment is capable of rapidly assimilating new knowledge from experts and design database. Further, it can. As an example, the well-known worldwide recall in Spring 2002 of the BMW 745i was a direct result

  6. Trivariate Simplex Splines for Inhomogeneous Solid Modeling in Engineering Design

    E-Print Network [OSTI]

    Qin, Hong

    Trivariate Simplex Splines for Inhomogeneous Solid Modeling in Engineering Design Jing Hua, Ying He of complicated geometry and topology. A modeled object is formulated with a trivariate simplex spline defined knots of trivariate simplex splines. We also develop a feature- sensitive fitting algorithm that can

  7. A New Motorcycle Simulator Platform: Mechatronics Design, Dynamics Modeling

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A New Motorcycle Simulator Platform: Mechatronics Design, Dynamics Modeling and Control L. Nehaoua and dynamics modeling will be presented. Some results are shown, validating the actutation requirements and platform control. 1. INTRODUCTION Road safety has become a major political and economical issue. While all

  8. DESIGNER INTEGRATION IN TRAINING CYCLES : IEEE LTSA MODEL ADAPTATION

    E-Print Network [OSTI]

    Boyer, Edmond

    DESIGNER INTEGRATION IN TRAINING CYCLES : IEEE LTSA MODEL ADAPTATION Alain Corbière & Chistophe as the distance learning platform architectures such as IEEE LTSA (Learning and Training System Architecture of the course's progression. It is based on the LTSA architectural model and the studies on the Learning Object

  9. 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

  10. A grid model for the design, coordination and dimensional optimization

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A grid model for the design, coordination and dimensional optimization in architecture D.Léonard1 54000 Nancy, France INTRODUCTION Our article treats layout grids in architecture and their use. It initially proposes to define an architectural grid model as well as a set of operations to construct them

  11. Design, Modeling And Control Of Steering And Braking For An Urban Electric Vehicle

    E-Print Network [OSTI]

    Maciua, Dragos

    1996-01-01T23:59:59.000Z

    Design, Modeling and Control of Steering and Braking for anDesign, Modeling and Control of Steering and Braking for anDesign, Modeling and Control of Steering and Braking for an

  12. Characterization of Special Variance Structures for Designs in Model Identification and Discrimination

    E-Print Network [OSTI]

    Flores, Analisa Marielena

    2011-01-01T23:59:59.000Z

    optimal 2 m fractional factorial designs of resolution V,2000. Model-robust factorial designs. Technometrics, 42(4),1979. A screening design for factorial experiments with

  13. 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

    2015-01-01T23:59:59.000Z

    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.

  14. Design verification and cold-flow modeling test report

    SciTech Connect (OSTI)

    Not Available

    1993-07-01T23:59:59.000Z

    This report presents a compilation of the following three test reports prepared by TRW for Alaska Industrial Development and Export Authority (AIDEA) as part of the Healy Clean Coal Project, Phase 1 Design of the TRW Combustor and Auxiliary Systems, which is co-sponsored by the Department of Energy under the Clean Coal Technology 3 Program: (1) Design Verification Test Report, dated April 1993, (2) Combustor Cold Flow Model Report, dated August 28, 1992, (3) Coal Feed System Cold Flow Model Report, October 28, 1992. In this compilation, these three reports are included in one volume consisting of three parts, and TRW proprietary information has been excluded.

  15. Building a WIM Data Archive for Improved Modeling, Design, and

    E-Print Network [OSTI]

    Bertini, Robert L.

    Building a WIM Data Archive for Improved Modeling, Design, and Rating Christopher Monsere Assistant, Washington, D.C. August 6, 2008 #12;Outline Data Almanac PORTAL WIM Archive Quality Control Sample Uses Redundant Array of Independent Disks (RAID) Web Interface #12;QUALITY CONTROL 14 #12;WIM Archive Quality

  16. Model-driven Application Design for a Campus Calendar Network

    E-Print Network [OSTI]

    Glushko, Robert J.

    Model-driven Application Design for a Campus Calendar Network Allison Bloodworth ' websites, or by sending an email with event information to a calendar administrator. This situation Berkeley Calendar Network. Our team created a web-based calendar that can display multiple views of events

  17. Tackling Automotive Challenges with an Integrated RE & Design Artifact Model

    E-Print Network [OSTI]

    Boltzmannstr. 3, 85748 Garching, Germany {penzenst}@in.tum.de Abstract. The automotive industry faces the needTackling Automotive Challenges with an Integrated RE & Design Artifact Model Birgit Penzenstadler, Documentation, Automotive, Em- bedded Systems 1 Introduction A well-known fact is that the complexity

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

    E-Print Network [OSTI]

    Gupta, Kaustubh

    2013-07-09T23:59:59.000Z

    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...

  19. The Product Oriented Design and Construction (PODAC) Cost Model

    E-Print Network [OSTI]

    from one rate year to another 5.2. Product Variations 5.2.1. Modify the Cost Item cost data 5 cost data 5.3.2. Modifying labor-hour estimates, labor costs, or material costs 5.3.3. ChangingThe Product Oriented Design and Construction (PODAC) Cost Model A Proposed Procedure for Product

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

    E-Print Network [OSTI]

    Nagurney, Anna

    Medical Nuclear Supply Chain Design: A Tractable Network Model and Computational Approach Anna Medical Nuclear Supply Chain Design #12;Outline Background and Motivation Supply Chain Challenges The Medical Nuclear Supply Chain Network Design Model The Computational Approach Summary and Suggestions

  1. 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)

    2009-01-01T23:59:59.000Z

    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 ...

  2. 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)

    2005-01-01T23:59:59.000Z

    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 ...

  3. UNCOVERING THE DESIGN PRINCIPLES OF POLYAMINE REGULATION IN YEAST: AN INTEGRATED MODELLING AND EXPERIMENTAL STUDY

    E-Print Network [OSTI]

    Ward, Karen

    UNCOVERING THE DESIGN PRINCIPLES OF POLYAMINE REGULATION IN YEAST: AN INTEGRATED MODELLING frameshifting mechanism. The resulting stochastic model is based on data obtained from specially designed model of the polyamine "controller" reproduces experimental data and predicts polyamine content under

  4. 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)

    2000-01-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Nicolas Perry; Magali Mauchand; Alain Bernard

    2010-11-26T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    2007-06-28T23:59:59.000Z

    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.

  7. Model to aid the design of composite landfill liners

    E-Print Network [OSTI]

    Mohammed, Kifayathulla

    1993-01-01T23:59:59.000Z

    MODEL TO AID THE DESI(iN OF COMPOSITE LANDFILL LINERS A Thesis by KIFAYATHULLA MOHAMMED Submitted to the School of Graduate Studies Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1993... Major Subject: Safety Engineering MODEL TO AID THE DESIGN OF COMPOSITE LANDFILL LINERS A Thesis by Kifayathulla Mohammed Approved as to style and content by: Kevin J. Mclnnes (Co-chairman of Committee) Richard P. Kon n (Member John P. Wagner...

  8. 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

    2006-10-30T23:59:59.000Z

    aspects. The research applies a novel perspective of examining both the methods of modeling-supported urban design and the design content of urban design to attempt to reveal a correlation or causal relation. Using the mixed method approach, this research...

  9. Reference Model 2: %22Rev 0%22 Rotor Design.

    SciTech Connect (OSTI)

    Barone, Matthew F.; Berg, Jonathan Charles; Griffith, Daniel

    2011-12-01T23:59:59.000Z

    The preliminary design for a three-bladed cross-flow rotor for a reference marine hydrokinetic turbine is presented. A rotor performance design code is described, along with modifications to the code to allow prediction of blade support strut drag as well as interference between two counter-rotating rotors. The rotor is designed to operate in a reference site corresponding to a riverine environment. Basic rotor performance and rigid-body loads calculations are performed to size the rotor elements and select the operating speed range. The preliminary design is verified with a simple finite element model that provides estimates of bending stresses during operation. A concept for joining the blades and support struts is developed and analyzed with a separate finite element analysis. Rotor mass, production costs, and annual energy capture are estimated in order to allow calculations of system cost-of-energy. Evaluation Only. Created with Aspose.Pdf.Kit. Copyright 2002-2011 Aspose Pty Ltd Evaluation Only. Created with Aspose.Pdf.Kit. Copyright 2002-2011 Aspose Pty Ltd

  10. Design theoretic analysis of three system modeling frameworks.

    SciTech Connect (OSTI)

    McDonald, Michael James

    2007-05-01T23:59:59.000Z

    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.

  11. Improved user interface design for site selection modeling system

    SciTech Connect (OSTI)

    Koffman, L.D. [Westinghouse Savannah River Site, Aiken, SC (United States)

    1996-12-31T23:59:59.000Z

    The Site Selection Modeling System (SSMS) is a customized application within the Environmental Data Atlas (EDA), which is an integrated geographic information system (GIS) for environmental applications at the Savannah River site (SRS) developed jointly by the Environmental Sciences Section (ESS) of Westinghouse Savannah River Company and by the University of South Carolina (USC). The SSMS was developed to assist analysts with site selection activities carried out by the ESS and is a powerful tool with a graphical user interface that allows non-GIS analysts to use the application. However, use of the SSMS in recent siting exercises revealed deficiencies in the user interface as a production tool. This paper specifies user interface design criteria necessary for a production application and describes the implementation of these design criteria in the SSMS.

  12. Design Considerations, Modeling and Analysis for the Multispectral Thermal Imager

    SciTech Connect (OSTI)

    Borel, C.C.; Clodius, W.B.; Cooke, B.J.; Smith, B.W.; Weber, P.G.

    1999-02-01T23:59:59.000Z

    The design of remote sensing systems is driven by the need to provide cost-effective, substantive answers to questions posed by our customers. This is especially important for space-based systems, which tend to be expensive, and which generally cannot be changed after they are launched. We report here on the approach we employed in developing the desired attributes of a satellite mission, namely the Multispectral Thermal Imager. After an initial scoping study, we applied a procedure which we call: "End-to-end modeling and analysis (EEM)." We began with target attributes, translated to observable signatures and then propagated the signatures through the atmosphere to the sensor location. We modeled the sensor attributes to yield a simulated data stream, which was then analyzed to retrieve information about the original target. The retrieved signature was then compared to the original to obtain a figure of merit: hence the term "end-to-end modeling and analysis." We base the EEM in physics to ensure high fidelity and to permit scaling. As the actual design of the payload evolves, and as real hardware is tested, we can update the EEM to facilitate trade studies, and to judge, for example, whether components that deviate from specifications are acceptable.

  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. Curran Crawford, Supervisor (Department of Mechanical Engineering) ABSTRACT Floating offshore wind

  14. Characterization of Special Variance Structures for Designs in Model Identification and Discrimination

    E-Print Network [OSTI]

    Flores, Analisa Marielena

    2011-01-01T23:59:59.000Z

    2 k ? 3.2 Model Information Consider a special search linear model (3.1) as it applies to a fractional factorial design.

  15. 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

  16. 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)

    2005-02-01T23:59:59.000Z

    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.

  17. Design report: SCDAP/RELAP5 reflood oxidation model

    SciTech Connect (OSTI)

    Coryell, E.W.; Chavez, S.A.; Davis, K.L.; Mortensen, M.H.

    1992-10-01T23:59:59.000Z

    Current SCDAP/RELAP5 oxidation models have proven to under-predict oxidation, and therefore hydrogen production, when modeling reflood during in-pile tests. As an example, while OECD LOFT Experiment LP-FP-2 shows significant increases in temperature and pressure during reflood due to increased oxidation, only minimal additional oxidation is currently predicted with SCDAP/RELAP5. Since SCDAP/RELAP5 predicts a steam rich environment during reflood, the parameter limiting oxidation must be the availability of zircaloy. Two phenomena, not currently modeled, may provide the necessary unoxidized zircaloy during reflood: (1) localized steam starvation prior to reflood, caused by debris blockage or hydrogen generation, or (2) shattering of oxidized cladding during reflood. The objective of this design report is to develop new models to accurately predict zircaloy cladding oxidation during the temperature transients prior to and during reflood. Evidence compiled from postirradiation examination (PIE) of fuel bundles subjected to severe accident conditions from several in-pile tests is used to identify mechanisms for additional cladding oxidation during reflood and to develop specific criteria to determine when these mechanisms are applicable.

  18. 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

  19. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol HomeFacebookScholarship Fund3Biology| Nationalof big-dataInvestigationSolar

  20. Solar Decathlon | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssues DOE's Nuclear EnergySmart Meters and| Department of: LetWake

  1. Computational Human Performance Modeling For Alarm System Design

    SciTech Connect (OSTI)

    Jacques Hugo

    2012-07-01T23:59:59.000Z

    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.

  2. 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.

    2011-03-01T23:59:59.000Z

    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.

  3. 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

  4. 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.

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

    E-Print Network [OSTI]

    Nagurney, Anna

    Medical Nuclear Supply Chain Design: A Tractable Network Model and Computational Approach Anna Chain Challenges The Medical Nuclear Supply Chain Network Design Model The Computational Approach Medical Nuclear Supply Chain Design #12;This presentation is based on the paper, "Medical Nuclear Supply

  6. Model-Based Hierarchical Optimal Control Design for HVAC Systems

    E-Print Network [OSTI]

    Maasoumy, Mehdi; Pinto, Alessandro; Sangiovanni-Vincentelli, Alberto

    2014-01-01T23:59:59.000Z

    trol algorithm design for hvac systems in energy efficientH.R. Sualem. Building and HVAC System simulation with theOPTIMAL CONTROL DESIGN FOR HVAC SYSTEMS Mehdi Maasoumy,

  7. Limited Model Information Control Design for Linear Discrete-Time Systems with Stochastic Parameters

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Limited Model Information Control Design for Linear Discrete-Time Systems with Stochastic systems with stochastically varying parameters. Recently, there have been studies in optimal control subsystems' parameters. There have been many studies in optimal control design for linear discrete

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

    E-Print Network [OSTI]

    Zepeda, Paola

    2004-09-30T23:59:59.000Z

    The contribution of the work here presented involves three main topics: Wireless Power Transmission (WPT) technology, phased array systems, and microwave components design and modeling. The first topic presents the conceptual design of a WPT system...

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

    E-Print Network [OSTI]

    Persad, Umesh

    2012-03-06T23:59:59.000Z

    of supporting analytical design evaluation for Inclusive Design. The analytical evaluation process involves evaluating products with user data rather than testing with actual users. The work focuses on the exploration of a capability-demand model of product...

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

    E-Print Network [OSTI]

    Mandelbaum, Andrew (Andrew Joseph)

    2014-01-01T23:59:59.000Z

    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 ...

  11. SSC dipole log manget model cryostat design and initial production experience

    SciTech Connect (OSTI)

    Niemann, R.C.; Carson, J.A.; Engler, N.H.; Gonczy, J.D.; Nicol, T.H.

    1986-06-01T23:59:59.000Z

    The SSC dipole magnet development program includes the design and construction of full length magnet models for heat leak and magnetic measurements and for the evaluation of the performance of strings of magnets. The design of the model magnet cryostat is presented and the production experiences for the initial long magnet model, a heat leak measurement device, are related.

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

    SciTech Connect (OSTI)

    Germann, Timothy C. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-07-08T23:59:59.000Z

    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.

  13. Structural Analysis of a New Design of a Glenoid Prosthesis by Finite Element Modeling

    E-Print Network [OSTI]

    Downey, John A

    1990-01-01T23:59:59.000Z

    18 Abstract Prosthesis loosening in total shoulderexcision. Present glenoid prostheses have fixation only inDesign of a Glenoid Prosthesis by Finite Element Modeling By

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

    SciTech Connect (OSTI)

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

    2008-09-01T23:59:59.000Z

    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.

  15. 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

  16. Hierarchical Modeling for Population-Based Heat Exchanger Design

    E-Print Network [OSTI]

    Geb, David

    2013-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Nguyen, Hung Viet

    2010-01-01T23:59:59.000Z

    Costing as a Tool for Process Improvement Evaluation. ”A. (2005). “Determination of Process Durations on VirtualR.G. (1987). “Cost Modeling: a Process-Modeling Approach”.

  18. SARA (System ARchitects Apprentice): Modeling, analysis, and simulation support for design of concurrent systems

    SciTech Connect (OSTI)

    Estrin, G.; Fenchel, R.S.; Razouk, R.R.; Vernon, M.K.

    1986-02-01T23:59:59.000Z

    An environment to support designers in the modeling, analysis and simulation of concurrent systems is described. It is shown how a fully nested structure model supports multilevel design and focuses attention on the interfaces between the modules which serve to encapsulate behavior. Using simple examples the paper indicates how a formal graph model can be used to model behavior in three domains: control flow, data flow, and interpretation. The effectiveness of the explicity environment model in SARA is discussed and the capability to analyze correctness and evaluate performance of a system model are demonstrated. A description of the integral help designed into SARA shows how the designer can be offered consistent use of any new tool introduced to support the design process.

  19. General Behavioral Thermal Modeling and Characterization for Multi-core Microprocessor Design

    E-Print Network [OSTI]

    Tan, Sheldon X.-D.

    General Behavioral Thermal Modeling and Characterization for Multi-core Microprocessor Design Thom-performance multi-core microprocessor design. The new approach builds the thermal behavioral models from ability. Experimental results on a real quad-core microprocessor show that ThermSID is more accurate than

  20. Energy Aware Algorithm Design via Probabilistic Computing: From Algorithms and Models to Moore's Law

    E-Print Network [OSTI]

    Palem, Krishna V.

    Energy Aware Algorithm Design via Probabilistic Computing: From Algorithms and Models to Moore opportunities for being energy-aware, the most fundamental limits are truly rooted in the physics of energy of models of computing for energy-aware al- gorithm design and analysis, culminating in establishing

  1. Integrated Design of Simulation Models for Passive Houses Petr Novak, Radek Sindelar

    E-Print Network [OSTI]

    Integrated Design of Simulation Models for Passive Houses Petr Nov´ak, Radek Sindel´ar Christian. The use-case shows that the design of simulation models for passive houses can be user-friendly and feasible even for non-experts as it is based on a graphical tool that enables to draw a passive house floor

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

    E-Print Network [OSTI]

    DiBiasio, Christopher M. (Christopher Michael)

    2007-01-01T23:59:59.000Z

    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 ...

  3. Design and vibration testing of a flexible seal whisker model

    E-Print Network [OSTI]

    Gerber, Christopher D

    2013-01-01T23:59:59.000Z

    Harbor seal whiskers have a unique surface structure that dramatically reduces vortex induced vibrations as they move through the water. Concurrently with rigid whisker experiments, this project focuses on the design and ...

  4. Modeling and Design of Multi-stage Separation Systems

    E-Print Network [OSTI]

    Wolf, Malima I.

    Interest in recycling has surged in recent years due to shifting material costs, environmental concerns over material production and disposal, and laws in many countries designed to improve material recycling rates. In ...

  5. 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, ...

  6. A Quality Based Approach for the Analysis and Design of Business Process Models

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Quality Based Approach for the Analysis and Design of Business Process Models Sarah Ayad1 CEDRIC in modeling and improving Business Process (BP) models quality. This problem is of growing interest exploiting domain knowledge. Keywords-component: Business Process Models, Quality metrics, Quality

  7. 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

  8. Sloppy Models, Parameter Uncertainty, and the Role of Experimental Design

    E-Print Network [OSTI]

    Apgar, Joshua F.

    Computational models are increasingly used to understand and predict complex biological phenomena. These models contain many unknown parameters, at least some of which are difficult to measure directly, and instead are ...

  9. Technology Characterization Models and Their Use in Designing Complex Systems

    E-Print Network [OSTI]

    Parker, Robert Reed

    2011-08-08T23:59:59.000Z

    , SHGF). In lieu of sending this model to an architect (to prevent divulging trade secrets or because the architect may not want to deal with these detailed models), the inventor could create a more abstracted model of the performance of his window...

  10. Design of Distributed Applications based on the OSI Model

    E-Print Network [OSTI]

    McBrien, Peter

    Science, King's College London Strand, London WC2R 2LS mailto:pjm@dcs.kcl.ac.uk http://www.dcs.kcl.ac.uk/sta#11;/pjm Abstract. This paper demonstrates how the fundamental concepts of a layered design found

  11. WUFI COMPUTER MODELING WORKSHOP FOR WALL DESIGN AND PERFORMANCE

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    , building forensic specialists, manufacturer representatives, facilities managers, IAQ specialists of modeling for new products are demonstrated by both group and individual interaction. · You will learn how

  12. An Aerospace Component Cost Modelling Study for Value Driven Design

    E-Print Network [OSTI]

    to a Rolls-Royce aero-engine fan blade. An objective of the cost model is the allow engineers to understand optimisation. Keywords: Cost Engineering, Cost Modelling, Unit Cost, Value. 1 INTRODUCTION 1.1 Motivation Rolls-Royce plc has formed a new methods group called the Research and Technology Cost Engineering group

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

    E-Print Network [OSTI]

    Stevens, John Simon

    2010-03-16T23:59:59.000Z

    firms are integral to their high value, ‘high design’ positioning. They are also often, but not necessarily, a major contributor to the innovation process. In discussions and literature, firms like Apple and BMW are mentioned so often as to have become... stakeholders, meeting and exceeding their needs and desires; it can help to drive and exploit innovation, to expand or redefine a market, and can be applied within the firm to improve processes, work environments and communications. All these are established...

  14. Heteropolymer Sequence Design and Preferential Solvation of Hydrophilic Monomers: One More Application of Random Energy Model

    E-Print Network [OSTI]

    Longhua Hu; Alexander Y. Grosberg

    2007-01-24T23:59:59.000Z

    In this paper, we study the role of surface of the globule and the role of interactions with the solvent for designed sequence heteropolymers using random energy model (REM). We investigate the ground state energy and surface monomer composition distribution. By comparing the freezing transition in random and designed sequence heteropolymers, we discuss the effects of design. Based on our results, we are able to show under which conditions solvation effect improves the quality of sequence design. Finally, we study sequence space entropy and discuss the number of available sequences as a function of imposed requirements for the design quality.

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

    SciTech Connect (OSTI)

    Backus, George A.; Dimotakes, Paul E. (NASA Jet Propulsion Laboratory, Pasadena, CA)

    2011-01-01T23:59:59.000Z

    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.

  16. Towards Integrated Design and Modeling of High Field Accelerator Magnets

    SciTech Connect (OSTI)

    Caspi, S.; Ferracin, P.

    2006-06-01T23:59:59.000Z

    The next generation of superconducting accelerator magnets will most likely use a brittle conductor (such as Nb{sub 3}Sn), generate fields around 18 T, handle forces that are 3-4 times higher than in the present LHC dipoles, and store energy that starts to make accelerator magnets look like fusion magnets. To meet the challenge and reduce the complexity, magnet design will have to be more innovative and better integrated. The recent design of several high field superconducting magnets have now benefited from the integration between CAD (e.g. ProE), magnetic analysis tools (e.g. TOSCA) and structural analysis tools (e.g. ANSYS). Not only it is now possible to address complex issues such as stress in magnet ends, but the analysis can be better detailed an extended into new areas previously too difficult to address. Integrated thermal, electrical and structural analysis can be followed from assembly and cool-down through excitation and quench propagation. In this paper we report on the integrated design approach, discuss analysis results and point out areas of future interest.

  17. Development of a room air conditioner design model

    E-Print Network [OSTI]

    Penson, Steven Brad

    1988-01-01T23:59:59.000Z

    model was developed for this thesis by making major modifications to a heat pump model previously developed by Oak Ridge National Laboratory: (1) Addition of a subcooler, (2) Revision of the capillary tube model, (3) Addition of multi-grooved tubes... circuiting . 11 3. 1 Ideal refrigeration cycle on a pressure-enthalpy diagram 3. 2 3. 3 Tube-in-condensate subcooler. Tube-in-tubs subcooler, . 15 . 17 3. 4 Simplified diagram of a room air conditioner . 19 3. 5 Capillary flow factors. . 30 3. 6...

  18. 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

  19. 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

  20. The Modellers' Apprentice -Gesture-Based 3D Design in Immersive Environments

    E-Print Network [OSTI]

    Cooperstock, Jeremy R.

    The Modellers' Apprentice - Gesture-Based 3D Design in Immersive Environments Franc¸ois Rioux techniques) INTRODUCTION The Modellers' Apprentice is a fully immersive 3D computer- augmented environment in Figure 1. Figure 1. The Modellers Apprentice running in The Shared Reality En- vironment. RELATED WORK

  1. System Level Design Using the SystemC Modeling Platform 1

    E-Print Network [OSTI]

    Ould Ahmedou, Mohameden

    System Level Design Using the SystemC Modeling Platform 1 1. Introduction1 As system complexity rosenstiel@informatik.uni-tuebingen.de Abstract This paper gives an overview of the SystemC modeling platform and outlines the features supported by the SystemC class library. The use of the modeling platform is shown

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

    E-Print Network [OSTI]

    Foss, Bjarne A.

    - pressors, gas and steam turbines and a heat recovery system. Analysis of dynamic models at an early stage principles. The pre- combustion gas power cycle plants consist of reformers and separation units, com

  3. Enabling rapid iterative model design within the laboratory environment 

    E-Print Network [OSTI]

    Clayton, Thomas F.

    2009-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Grasch, Adam D. (Adam Davis)

    2013-01-01T23:59:59.000Z

    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). ...

  5. Reconfigurable autopilot design for a high performance aircraft using model predictive control

    E-Print Network [OSTI]

    Ruiz, Jose Pedro, 1980-

    2004-01-01T23:59:59.000Z

    The losses of military and civilian aircraft due to control surface failures have prompted research into controllers with a degree of reconfiguration. This thesis will describe a design approach incorporating Model Predictive ...

  6. Validation of and enhancements to an operating-speed-based geometric design consistency evaluation model

    E-Print Network [OSTI]

    Collins, Kent Michael

    1995-01-01T23:59:59.000Z

    This thesis documents efforts to validate two elements related to an operating-speed-based geometric design consistency evaluation procedure: (1) the speed reduction estimation ability of the model, and (2) assumptions about acceleration...

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

    E-Print Network [OSTI]

    Cui, Ling, 1978-

    2004-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Smyth, Katherine Marie

    2012-01-01T23:59:59.000Z

    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 ...

  9. The Pugh Controlled Convergence Method: Model-Based Evaluation and Implications for Design Theory

    E-Print Network [OSTI]

    Wijnia, Ype

    This paper evaluates the Pugh Controlled Convergence method and its relationship to recent developments in design theory. Computer executable models are proposed simulating a team of people involved in iterated cycles of ...

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

    E-Print Network [OSTI]

    Kisiel, Arlene A. (Arlene Ann)

    1997-01-01T23:59:59.000Z

    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 ...

  11. Generic Models in the Design of Solar Commercial Buildings , N. ISAACS1

    E-Print Network [OSTI]

    Amor, Robert

    Generic Models in the Design of Solar Commercial Buildings M. DONN1 , N. ISAACS1 School). While it is relatively simple to encapsulate the mathematical expertise of a services engineer

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

    E-Print Network [OSTI]

    Giansiracusa, Michael P

    2010-01-01T23:59:59.000Z

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

    E-Print Network [OSTI]

    Dalal, Jyotirmoy

    2014-12-02T23:59:59.000Z

    We present three models for emergency response network design. First, in a deterministic setting, we focus on two critical aspects of emergency logistics: evacuation and relief distribution. We consider a three-tier system comprising evacuation...

  14. From MARTE to Reconfigurable NoCs: A model driven design

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , System-on-Chip (SoC) has emerged as a new methodology for embedded systems design. In a So are expected to be integrated into the system. As a result, more complex soft- ware applications and hardwareFrom MARTE to Reconfigurable NoCs: A model driven design methodology Imran Rafiq Quadri, Majdi

  15. Large Scale Approximate Inference and Experimental Design for Sparse Linear Models

    E-Print Network [OSTI]

    Seeger, Matthias

    Large Scale Approximate Inference and Experimental Design for Sparse Linear Models Matthias W.kyb.tuebingen.mpg.de/bs/people/seeger/ 27 June 2008 Matthias W. Seeger (MPI BioCyb) Large Scale Bayesian Experimental Design 27/6/08 1 / 27 Algorithms 4 Magnetic Resonance Imaging Sequences Matthias W. Seeger (MPI BioCyb) Large Scale Bayesian

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

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    1 DESIGN AND MODELING OF DISPATCHABLE HEAT STORAGE IN WIND/DIESEL SYSTEMS Clint Johnson, Utama system designed to increase the utilization of wind power in cold climate wind/diesel systems where and load occurs in many isolated cold-climate diesel systems around the world where the summer population

  17. Composable Thermal Modeling and Simulation for Architecture-Level Thermal Designs of Multi-core Microprocessors

    E-Print Network [OSTI]

    Tan, Sheldon X.-D.

    1 Composable Thermal Modeling and Simulation for Architecture-Level Thermal Designs of Multi and Technology of China Efficient temperature estimation is vital for designing thermally efficient, lower power and robust integrated circuits in nanometer regime. Thermal simulation based on the detailed thermal

  18. 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 electric vehicles, empirical fuel cell system data has been incorporated into the NREL's vehicle design and simulation tool, ADVISOR (ADvanced Vehicle SimulatOR), to predict the performance of a low-speed, fuel cell

  19. Technical Note Design and modeling of a fluid-based micro-scale electrocaloric

    E-Print Network [OSTI]

    McGaughey, Alan

    Technical Note Design and modeling of a fluid-based micro-scale electrocaloric refrigeration system a c t A refrigeration system composed of silicon MEMS cooling elements is designed based. The main advantage of EC cooling over magnet- ocaloric cooling (which operates on an analogous principle

  20. Reassessing Residential Design in Hawaii: Design Construction Building Analysis and Publishing Design Guidelines for a Passive-Design Model Home on Hawaiian Homeland

    E-Print Network [OSTI]

    Meder, S.

    2006-01-01T23:59:59.000Z

    the considerations of building orientation, the building envelope’s solar heat gain mitigation potential, natural ventilation and daylighting opportunities, often increases the demand for higher energy consumption by elevating the need for air conditioning... partnerships. They also applied for, and received, a US Department of Energy grant to partially fund the project. The concept was to conduct research and to provide educational outreach material and design guidelines to the design professions and general...

  1. Ontology Design and Development Framework Part I: Enhancing Modeling

    E-Print Network [OSTI]

    Demurjian, Steven A.

    terminologies representing a semantic agreement between humans and knowledge systems. Numerous knowledge representational frameworks (e.g. KIF, DAML+OIL, OWL etc.), have been proposed in the research community, with limited adoption in the industry. One possible reason is a lack of a formal and rigorous model

  2. Model Reformulation and Design of Lithium-ion Batteries

    E-Print Network [OSTI]

    Subramanian, Venkat

    -ion chemistry has been identified as a good candidate for high-power/high-energy secondary batteries implantable cardiovascular defibrillators (ICDs) operating at 10 mA current to hybrid vehicles requiring, these models have not been employed for parameter estimation or dynamic optimization of operating conditions

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

    E-Print Network [OSTI]

    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. Feasibility of foundation heat exchangers in ground source heat pump systems in the United States. ASHRAE

  4. Optimization-based Design of Plant-Friendly Input Signals for Model-on-Demand Estimation and Model Predictive Control

    E-Print Network [OSTI]

    Mittelmann, Hans D.

    is shown by applying it to a case study involving composition control of a binary distillation column. I is demonstrated in a binary high-purity distillation column case study by Weischedel and McAvoy [7], a demandingOptimization-based Design of Plant-Friendly Input Signals for Model-on-Demand Estimation and Model

  5. 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

    1999-11-01T23:59:59.000Z

    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.

  6. Model for Sustainable Urban Design With Expanded Sections on Distributed

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment3311,OfficialProducts | Department of| DepartmentModelEnergy

  7. Energy Blog | Department of Energy

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

    team's Flickr photostream Solar Decathlon Design Places People and the Outdoors at its Heart The Solar Decathlon team from New Zealand is the first from the Southern Hemisphere to...

  8. Modeling and design for a new ionospheric modification experiment

    SciTech Connect (OSTI)

    Sales, G.S.; Platt, I.G.; Haines, D.M.; Huang, Y.; Heckscher, J.L.

    1990-10-01T23:59:59.000Z

    Plans are now underway to carry out new HF oblique ionospheric modification experiments with increased radiated power using a new high gain antenna system and a 1 MW transmitter. The output of this large transmitting system will approach 90 dBW. An important part of this program is to determine the existence of a threshold for non-linear effects by varying the transmitter output. For these experiments we are introducing a new ET probe system, a low power oblique sounder, to be used along the same propagation path as the high power disturbing transmitter. This concept was first used by soviet researchers to insure that this diagnostic signal always passes through the modified region of the ionosphere. The HF probe system will use a low power (150 W) CW signal shifted by approximately 40 kHz from the frequency used by the high power system. The transmitter for the probe system will be at the same location as the high power transmitter while the probe receiver will be 2400 km down range. The probe receiving system uses multiple antennas to measure the the vertical and azimuthal angle of arrival as well the Doppler frequency shift of the arriving probe signal. The three antenna array will be in an L configuration to measure the phase differences between the antennas. At the midpath point a vertical sounder will provide the ionospheric information necessary for the frequency management of the experiment. Real-time signal processing will permit the site operators to evaluate the performance of the system and make adjustments during the experiment. A special ray tracing computer will be used to provide real-time frequencies and elevation beam steering during the experiment. A description of the system and the analysis used in the design of the experiment are presented.

  9. Multivariable decoupled longitudinal and lateral vehicle control: A model-free design

    E-Print Network [OSTI]

    Multivariable decoupled longitudinal and lateral vehicle control: A model-free design Lghani model-free control is ap- plied to a multivariable decoupled longitudinal and lateral ve- hicle control and steering angle). It yields driving maneuvers requiring a control coordination of steering angle, braking

  10. Designing a Mobile Collaborative System for Navigating and Reviewing Oil Industry CAD Models

    E-Print Network [OSTI]

    Barbosa, Alberto

    Designing a Mobile Collaborative System for Navigating and Reviewing Oil Industry CAD Models navigating and reviewing 3D engineering models, applied to the oil industry. Together with professional oil industry engineers from a large oil company, a team of HCI researchers per- formed task analysis

  11. Deployment Mechanism Design with Behavioral Modeling Based on Pro/Engineer Motion Skeleton

    E-Print Network [OSTI]

    kind of motion mechanisms, is often used to stretch out solar panels or antennas in spacecraftDeployment Mechanism Design with Behavioral Modeling Based on Pro/Engineer Motion Skeleton Chao.com.cn Keywords: Deployment mechanism, Motion skeleton, Behavioral modeling, Feasibility analysis Abstract

  12. An analytical model for the design of in-slab electric heating panels

    SciTech Connect (OSTI)

    Ritter, T.L.; Kilkis, B.I. [Heatway, Springfield, MO (United States)

    1998-10-01T23:59:59.000Z

    In this paper, a steady-state heat transfer model is described for design and sizing of electric radiant panel heating systems embedded in a slab. This model is applicable both for ceiling and floor panels. An approximate panel surface heat output algorithm is also given as a function of size and orientation of the heated space and outdoor exposure.

  13. Extending G-Nets to Support Inheritance Modeling in Concurrent Object-Oriented Design

    E-Print Network [OSTI]

    Xu, Haiping

    Extending G-Nets to Support Inheritance Modeling in Concurrent Object-Oriented Design Haiping Xu and Sol M. Shatz The University of Illinois at Chicago Chicago, IL, 60607 Abstract G-Nets are a type of Petri net defined to support modeling of system as a set of independent and loosely-coupled modules

  14. SKIRT: the design of a suite of input models for Monte Carlo radiative transfer simulations

    E-Print Network [OSTI]

    Baes, Maarten

    2015-01-01T23:59:59.000Z

    The Monte Carlo method is the most popular technique to perform radiative transfer simulations in a general 3D geometry. The algorithms behind and acceleration techniques for Monte Carlo radiative transfer are discussed extensively in the literature, and many different Monte Carlo codes are publicly available. On the contrary, the design of a suite of components that can be used for the distribution of sources and sinks in radiative transfer codes has received very little attention. The availability of such models, with different degrees of complexity, has many benefits. For example, they can serve as toy models to test new physical ingredients, or as parameterised models for inverse radiative transfer fitting. For 3D Monte Carlo codes, this requires algorithms to efficiently generate random positions from 3D density distributions. We describe the design of a flexible suite of components for the Monte Carlo radiative transfer code SKIRT. The design is based on a combination of basic building blocks (which can...

  15. 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)

    2007-07-01T23:59:59.000Z

    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.

  16. Energy distribution and computer modeled nozzle design in high pressure water jet coating removal

    SciTech Connect (OSTI)

    Blades, B. [Hobart Tafa Technologies Inc., Concord, NH (United States)

    1994-12-31T23:59:59.000Z

    Wider acceptance of water jet coating removal as an industrial process has created a demand to better understand the physical phenomena occurring during coating removal. This demand stems from both technical and process control concerns. Research on behavior of coating removal nozzles and high pressure jets in general provide the basis for the development of a mathematical model of rotating nozzle. The model finds uses in both process development and new equipment design. Data confirming the validity of the model has been generated and the need for further refinement of the model has been noted.

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

    E-Print Network [OSTI]

    Burdet, Etienne; Morand, Denis; Diab, Youssef

    2014-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Subramanian, Venkat

    of energy density. optimization of design parameters. such as implantable cardiovascular defibrillators (ICDs) to high power/high energy applications such as hybrid carsModel-based simultaneous optimization of multiple design parameters for lithium-ion batteries

  19. 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.

  20. One Size Does Not Fit All: Applying the Transtheoretical Model to Energy Feedback Technology Design

    E-Print Network [OSTI]

    Greenberg, Saul

    to this problem. The development of energy-efficient technol- ogy (e.g. cars, homes, appliances) is one approach. While important, this is only a partial solution as people do not always use this technology in energy-efficientOne Size Does Not Fit All: Applying the Transtheoretical Model to Energy Feedback Technology Design

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

    E-Print Network [OSTI]

    Hardware/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 computational efficiency. In this work, we compare the per- formance and energy efficiency of three

  2. 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

  3. 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

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

    E-Print Network [OSTI]

    Nagurney, Anna

    Medical Nuclear Supply Chain Design: A Tractable Network Model and Computational Approach Anna of medical nuclear supply chains. Our focus is on the molybdenum supply chain, which is the most commonly is of special relevance to healthcare given the medical nuclear product's widespread use as well as the aging

  5. Integrated Modeling and Design of Lightweight, Active Mirrors for Launch Survival and On-Orbit

    E-Print Network [OSTI]

    -Orbit Performance Lucy E. Cohan and David W. Miller June 2010 SSL# 2-10 #12;#12;Integrated Modeling and Design June 2010 SSL# 2-10 This work is based on the unaltered text of the thesis by Lucy Cohan submitted

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

    E-Print Network [OSTI]

    Standiford, Richard B.

    Evolution of a Visual Impact Model to Evaluate Nuclear Plant Siting and Design Option1 2/ Brian A and economic options for the analysis of nuclear plant siting possibilities (Burnham 1974; Jones, April 1975 of nuclear plant siting options for the AEC. BNWL's multi-disciplinary impact evaluation pro- cedure required

  7. 1 P A P E R 2 Design, Modeling and Optimization of an

    E-Print Network [OSTI]

    Qu, Zhihua

    1 P A P E R 2 Design, Modeling and Optimization of an 3 Ocean Wave Power Generation Buoy 4 A U T H source of energy. Exist- 44 ing systems, typically hydraulic turbines powered by high-pressure fluids, are very 45 large in size and costly. Additionally, they require large ocean waves in which to op- 46 erate

  8. DEVELOPMENT PROGRAMS FOR ONE-SHOT SYSTEMS USING MULTIPLE-STATE DESIGN RELIABILITY MODELS

    E-Print Network [OSTI]

    semiconductors, microelectronics, lasers, electronic devices, and mechanical components, to obtain timely information on the reliability of both products and components. Breyfogle [5] and Meeker and Escobar [4] note1 DEVELOPMENT PROGRAMS FOR ONE-SHOT SYSTEMS USING MULTIPLE-STATE DESIGN RELIABILITY MODELS

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

    E-Print Network [OSTI]

    Stevens, Kenneth Michael

    1996-01-01T23:59:59.000Z

    The primary purpose of the work reported in this thesis was to develop a versatile computer model to facilitate the design and analysis of hybrid vehicle drive-trains. A hybrid vehicle is one in which power for propulsion comes from two distinct...

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

    E-Print Network [OSTI]

    Stevens, Kenneth Michael

    1996-01-01T23:59:59.000Z

    The primary purpose of the work reported in this thesis was to develop a versatile computer model to facilitate the design and analysis of hybrid vehicle drive-trains. A hybrid vehicle is one in which power for propulsion comes from two distinct...

  11. Model-based Control Design of a Diesel Oxidation Olivier Lepreux

    E-Print Network [OSTI]

    Model-based Control Design of a Diesel Oxidation Catalyst Olivier Lepreux Yann Creff Nicolas.petit @ mines-paristech.fr) Abstract: This paper proposes a control strategy for a Diesel Oxidation Catalyst for the propagation of the temperature variations accounts for spatially distributed heat generation (due to oxidation

  12. 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

  13. Behavioral ESD Protection Modeling to perform System Level ESD Efficient Design

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ) and semi- conductor suppliers, the prediction of ElectroStatic Discharge (ESD) events into design phase goal of the proposed model is that it could be shared by IC suppliers and EMs to ensure that ICs can aggressions of a system. The level of ESD stress required during the system qualification is increasing over

  14. Modeling of a digital tool to design sustainable buildings Vida Gholipour1, 2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -Model or "EM". Subsequently, the study presents the first contour of software based on an EM approach. Thus to reduce the risk of disregarding possible environmental impacts. The design team has to cope with problems be water conserving, non-toxic, and energy efficient, with high-quality spaces and recycled materials

  15. A FESTIVAL OF SCIENCE, TECHNOLOGY, AND ROBOTS AT WPI Faculty and Student exhibitS Planned

    E-Print Network [OSTI]

    Camesano, Terri

    and construction of the house and of the competition in China). · A shaker table designed by a 2014 MQP team (demos-climbing robot, a pipeline-traversing robot, and the NSF-supported PARbot (personal assistive robot). · arc will include: · WPI's entry in the 2013 Solar decathlon (3D model of the house, videos and photos of the design

  16. A High Resolution Hydrodynamic Model of Puget Sound to Support Nearshore Restoration Feasibility Analysis and Design

    SciTech Connect (OSTI)

    Khangaonkar, Tarang; Yang, Zhaoqing

    2011-01-01T23:59:59.000Z

    Estuarine and coastal hydrodynamic processes are sometimes neglected in the design and planning of nearshore restoration actions. Despite best intentions, efforts to restore nearshore habitats can result in poor outcomes if circulation and transport which also affect freshwater-saltwater interactions are not properly addressed. Limitations due to current land use can lead to selection of sub-optimal restoration alternatives that may result in undesirable consequences, such as flooding, deterioration of water quality, and erosion, requiring immediate remedies and costly repairs. Uncertainty with achieving restoration goals, such as recovery of tidal exchange, supply of sediment and nutrients, and establishment of fish migration pathways, may be minimized by using numerical models designed for application to the nearshore environment. A high resolution circulation and transport model of the Puget Sound, in the state of Washington, was developed to assist with nearshore habitat restoration design and analysis, and to answer the question “can we achieve beneficial restoration outcomes at small local scale, as well as at a large estuary-wide scale?” The Puget Sound model is based on an unstructured grid framework to define the complex Puget Sound shoreline using a finite volume coastal ocean model (FVCOM). The capability of the model for simulating the important nearshore processes, such as circulation in complex multiple tidal channels, wetting and drying of tide flats, and water quality and sediment transport as part of restoration feasibility, are illustrated through examples of restoration projects in Puget Sound.

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

    SciTech Connect (OSTI)

    Hamm, L.L.

    1998-10-07T23:59:59.000Z

    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.

  18. Design of a single orifice pulse tube refrigerator through the development of a first-order model

    E-Print Network [OSTI]

    Schor, Alisha R. (Alisha Robin)

    2007-01-01T23:59:59.000Z

    A first order model for the behavior of a linear orifice pulse tube refrigerator (OPTR) was developed as a design tool for construction of actual OPTRs. The model predicts cooling power as well as the pressure/volume ...

  19. 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

    2013-08-01T23:59:59.000Z

    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.

  20. 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

  1. Designing a Collaborative Problem Solving Environment for Integrated Water Resource Modeling

    SciTech Connect (OSTI)

    Thurman, David A.; Cowell, Andrew J.; Taira, Randal Y.; Frodge, Jonathan

    2004-06-14T23:59:59.000Z

    We report on our approach for designing a collaborative problem solving environment for hydrologists, water quality planners and natural resource managers, all roles within a natural resource management agency and stakeholders in an integrated water resource management process. We describe our approach in context of the Integrated Water Resource Modeling System (IWRMS), under development by Pacific Northwest National Laboratory for the Department of Natural Resources and Parks in King County, Washington. This system will integrate a collection of water resource models (watersheds, rivers, lakes, estuaries) to provide the ability to address water, land use, and other natural resource management decisions and scenarios, with the goal of developing an integrated modeling capability to address future land use and resource management scenarios and provide scientific support to decision makers. Here, we discuss the five-step process used to ascertain the (potentially opposing) needs and interests of stakeholders and provide results and summaries from our experiences. The results of this process guide user interface design efforts to create a collaborative problems solving environment supporting multiple users with differing scientific backgrounds and modeling needs. We conclude with a discussion of participatory interface design methods used to encourage stakeholder involvement and acceptance of the system as well as the lessons learned to date.

  2. Solar Decathlon Technology Spotlight: Structural Insulated Panels

    Broader source: Energy.gov [DOE]

    Structural insulated panels (SIPs) are prefabricated structural elements used to build walls, ceilings, floors, and roofs.

  3. Solar Decathlon 2013: New Teams! New Location!

    Broader source: Energy.gov [DOE]

    In addition to welcoming 20 new collegiate teams and hundreds of new student decathletes to our 2013 competition, we are announcing a new site.

  4. Solar Decathlon Turns Ten | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMayDepartment of Energy Ready,SmartEnergy Opening Ceremony andTurns

  5. 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 DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary ofSmallConfidential,2 Solar Background

  6. Solar Decathlon Turns Ten | 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 DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary ofSmallConfidential,2 Solar BackgroundWake of

  7. Models, Calculation and Optimization of Gas Networks, Equipment and Contracts for Design, Operation, Booking and Accounting

    E-Print Network [OSTI]

    Ostromuhov, Leonid A

    2011-01-01T23:59:59.000Z

    There are proposed models of contracts, technological equipment and gas networks and methods of their optimization. The flow in network undergoes restrictions of contracts and equipment to be operated. The values of sources and sinks are provided by contracts. The contract models represent (sub-) networks. The simplest contracts represent either nodes or edges. Equipment is modeled by edges. More sophisticated equipment is represented by sub-networks. Examples of such equipment are multi-poles and compressor stations with many entries and exits. The edges can be of different types corresponding to equipment and contracts. On such edges, there are given systems of equation and inequalities simulating the contracts and equipment. On this base, the methods proposed that allow: calculation and control of contract values for booking on future days and for accounting of sales and purchases; simulation and optimization of design and of operation of gas networks. These models and methods are realized in software syst...

  8. 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

    2012-12-31T23:59:59.000Z

    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.

  9. Preliminary Design Report for Modeling of Hydrogen Uptake in Fuel Rod Cladding During Severe Accidents

    SciTech Connect (OSTI)

    Siefken, Larry James

    1999-02-01T23:59:59.000Z

    Preliminary designs are described for models of hydrogen and oxygen uptake in fuel rod cladding during severe accidents. Calculation of the uptake involves the modeling of seven processes: (1) diffusion of oxygen from the bulk gas into the boundary layer at the external cladding surface, (2) diffusion from the boundary layer into the oxide layer, (3) diffusion from the inner surface of the oxide layer into the metallic part of the cladding, (4) uptake of hydrogen in the event that the clad-ding oxide layer is dissolved in a steam-starved region, (5) embrittlement of cladding due to hydrogen uptake, (6) cracking of cladding during quenching due to its embrittlement and (7) release of hydrogen from the cladding after cracking of the cladding. An integral diffusion method is described for calculating the diffusion processes in the cladding. Experimental results are presented that show a rapid uptake of hydrogen in the event of dissolution of the oxide layer and a rapid release of hydrogen in the event of cracking of the oxide layer. These experimental results are used as a basis for calculating the rate of hydrogen uptake and the rate of hydrogen release. The uptake of hydrogen is limited to the equilibrium solubility calculated by applying Sievert's law. The uptake of hydrogen is an exothermic reaction that accelerates the heatup of a fuel rod. An embrittlement criteria is described that accounts for hydrogen and oxygen concentration and the extent of oxidation. A design is described for implementing the models for hydrogen and oxygen uptake and cladding embrittlement into the programming framework of the SCDAP/RELAP5 code. A test matrix is described for assessing the impact of the proposed models on the calculated behavior of fuel rods in severe accident conditions. This report is a revision and reissue of the report entitled; "Preliminary Design Report for Modeling of Hydrogen Uptake in Fuel Rod Cladding During Severe Accidents."

  10. Durability-Based Design Guide for an Automotive Structural Composite: Part 2. Background Data and Models

    SciTech Connect (OSTI)

    Corum, J.M. [ORNL; Battiste, R.L. [ORNL; Brinkman, C.R. [ORNL; Ren, W. [ORNL; Ruggles, M.B. [ORNL; Weitsman, Y.J. [ORNL; Yahr, G.T. [ORNL

    1998-02-01T23:59:59.000Z

    This background report is a companion to the document entitled ''Durability-Based Design Criteria for an Automotive Structural Composite: Part 1. Design Rules'' (ORNL-6930). The rules and the supporting material characterization and modeling efforts described here are the result of a U.S. Department of Energy Advanced Automotive Materials project entitled ''Durability of Lightweight Composite Structures.'' The overall goal of the project is to develop experimentally based, durability-driven design guidelines for automotive structural composites. The project is closely coordinated with the Automotive Composites Consortium (ACC). The initial reference material addressed by the rules and this background report was chosen and supplied by ACC. The material is a structural reaction injection-molded isocyanurate (urethane), reinforced with continuous-strand, swirl-mat, E-glass fibers. This report consists of 16 position papers, each summarizing the observations and results of a key area of investigation carried out to provide the basis for the durability-based design guide. The durability issues addressed include the effects of cyclic and sustained loadings, temperature, automotive fluids, vibrations, and low-energy impacts (e.g., tool drops and roadway kickups) on deformation, strength, and stiffness. The position papers cover these durability issues. Topics include (1) tensile, compressive, shear, and flexural properties; (2) creep and creep rupture; (3) cyclic fatigue; (4) the effects of temperature, environment, and prior loadings; (5) a multiaxial strength criterion; (6) impact damage and damage tolerance design; (7) stress concentrations; (8) a damage-based predictive model for time-dependent deformations; (9) confirmatory subscale component tests; and (10) damage development and growth observations.

  11. UC Davis Models: Geospatial Station Network Design Tool and Hydrogen Infrastructure Rollout Economic Analysis Model

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMayDepartmentTestFeedEnergyUC Davis Models Geospatial Station Network

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

    E-Print Network [OSTI]

    M. Schindler; A. Ajdari

    2007-12-20T23:59:59.000Z

    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.

  13. Achievements and deficiencies of nuclear models used for the design of spallation sources

    SciTech Connect (OSTI)

    Leray, S.; Boudard, A.; David, J. C.; Ducret, J. E.; Kezzar, K.; Le Gentil, E.; Lemaire, S.; Volant, C.; Yariv, Y. [CEA/Saclay, DAPNIA/SPhN, 91191 Gif-sur-Yvette, Cedex (France)

    2006-07-01T23:59:59.000Z

    High-energy transport codes are used in a large number of domains as spallation neutron sources or ADS design, space or medical applications. In these codes, nuclear models describing spallation reactions generate the necessary elementary cross-sections and characteristics of all the reaction products. During the last years, new high-quality experimental data have been collected leading to the development of more reliable spallation models, as the INCL4-ABLA combination of intranuclear cascade and de-excitation models, now available in MCNPX. However, remaining deficiencies have been identified, which can be of important consequences for applications, for instance in the prediction of damage. They generally originate from not well understood physics mechanisms. To solve these problems more constraining experiments are now being carried out, which allow a deeper understanding of the reaction mechanisms, in particular for the de-excitation stage. Recent improvements of INCL4 are presented. Impact for applications is discussed. (authors)

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

    SciTech Connect (OSTI)

    Andreas, R.D. [Sandia National Labs., Albuquerque, NM (United States). Electronic Subsystems Center

    1995-03-01T23:59:59.000Z

    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.

  15. 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)

    2012-07-01T23:59:59.000Z

    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)

  16. 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

    2008-06-05T23:59:59.000Z

    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.

  17. Reactor core design and modeling of the MIT research reactor for conversion to LEU

    SciTech Connect (OSTI)

    Newton, Thomas H. Jr. [Nuclear Reactor Laboratory, Massachusetts Institute of Technology, 138 Albany St., Cambridge, MA 02139 (United States); Olson, Arne P.; Stillman, John A. [RERTR Program, Argonne National Laboratory, Argonne, IL 60439 (United States)

    2008-07-15T23:59:59.000Z

    Feasibility design studies for conversion of the MIT Research Reactor (MITR) to LEU are described. Because the reactor fuel has a rhombic cross section, a special input processor was created in order to model the reactor in great detail with the REBUS-PC diffusion theory code, in 3D (triangular-z) geometry. Comparisons are made of fuel assembly power distributions and control blade worth vs. axial position, between REBUS-PC results and Monte Carlo predictions from the MCNP code. Results for the original HEU core at zero burnup are also compared with measurement. These two analysis methods showed remarkable agreement. Ongoing fuel cycle studies are summarized. A status report will be given as to results thus far that affect key design decisions. Future work plans and schedules to achieve completion of the conversion are presented. (author)

  18. The Meme as a Design Pattern for Social Learning in Agent-Based Models Andrew Rixon1

    E-Print Network [OSTI]

    Boschetti, Fabio

    simulations and visualizations. With our attention directed to social learning for agent-based modelling we for addressing social learning in agent-based modelling and simulation. Patterns Patterns were first identifiedThe Meme as a Design Pattern for Social Learning in Agent-Based Models Andrew Rixon1 , Peter

  19. A New Genetic Algorithm using Pareto Partitioning Method for Robust Partial Model Matching PID Design with Two Degrees of Freedom

    E-Print Network [OSTI]

    Coello, Carlos A. Coello

    A New Genetic Algorithm using Pareto Partitioning Method for Robust Partial Model Matching PID optimization, Partial model matching, PID controller with two degrees of freedom Abstract: In this paper we the design problem of the robust PID controller with two degrees of freedom based on the partial model

  20. 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

    2011-01-01T23:59:59.000Z

    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

  1. Preliminary design report for modeling of hydrogen uptake in fuel rod cladding during severe accidents

    SciTech Connect (OSTI)

    Siefken, L.J.

    1998-08-01T23:59:59.000Z

    Preliminary designs are described for models of the interaction of Zircaloy and hydrogen and the consequences of this interaction on the behavior of fuel rod cladding during severe accidents. The modeling of this interaction and its consequences involves the modeling of seven processes: (1) diffusion of oxygen from the bulk gas into the boundary layer at the external cladding surface, (2) diffusion from the boundary layer into the oxide layer at the cladding external surface, (3) diffusion from the inner surface of the oxide layer into the metallic part of the cladding, (4) uptake of hydrogen in the event that the cladding oxide layer is dissolved in a steam-starved region, (5) embrittlement of cladding due to hydrogen uptake, (6) cracking of cladding during quenching due to its embrittlement and (7) release of hydrogen from the cladding after cracking of the cladding. An integral diffusion method is described for calculating the diffusion processes in the cladding. Experimental and theoretical results are presented that show the uptake of hydrogen in the event of dissolution of the oxide layer occurs rapidly and that show the release of hydrogen in the event of cracking of the cladding occurs rapidly. These experimental results are used as a basis for calculating the rate of hydrogen uptake and the rate of hydrogen release. The uptake of hydrogen is limited to the equilibrium solubility calculated by applying Sievert`s law. The uptake of hydrogen is an exothermic reaction that accelerates the heatup of a fuel rod. An embrittlement criteria is described that accounts for hydrogen and oxygen concentration and the extent of oxidation. A design is described for implementing the models for Zr-H interaction into the programming framework of the SCDAP/RELAP5 code. A test matrix is described for assessing the impact of the Zr-H interaction models on the calculated behavior of fuel rods in severe accident conditions.

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

    SciTech Connect (OSTI)

    Hughes, Patrick [ORNL; Im, Piljae [ORNL

    2012-01-01T23:59:59.000Z

    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

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

    SciTech Connect (OSTI)

    Deng, Yueying; Kruger, Albert A.

    2013-12-16T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    2014-06-01T23:59:59.000Z

    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.

  5. 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

  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. 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 ...

  8. 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

    2011-01-01T23:59:59.000Z

    PASSIVE SOLAR BUILDING PERFORMANCE: A THEORETICAL APPROACH TO THE DESIGNpassive solar buildings, and the concommitant inability to predict the results of various designs.Passive solar modelling is worthwhile as a tool for imple- menting one important conservative strategy -- the use of building design

  9. Phase Noise Metrology and Modelling of Microwave Transistors Applications to the design of state of the art

    E-Print Network [OSTI]

    Boyer, Edmond

    Phase Noise Metrology and Modelling of Microwave Transistors Applications to the design of state running sources has always been an important problem in various applications. This noise generates this noise contribution is a difficult challenge for microwave engineers and circuits designers. It cannot

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

    SciTech Connect (OSTI)

    Smith, F.

    2012-08-06T23:59:59.000Z

    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.

  11. Conceptual design of a regional water quality screening model. [RFF; Reach; HANFORD; ARQUAL; SEAS; NASQUAN

    SciTech Connect (OSTI)

    Davis, M J

    1981-01-01T23:59:59.000Z

    This water quality assessment methodology is intended to predict concentrations at future times and to estimate the impacts on water quality of energy-related activities (including industrial boilers). Estimates of impacts on water quality at future times are based on incremental changes in pollutant inputs to the body water. Important features of the model are: use of measured concentrations to account for existing conditions; consideration of incremental changes in pollutant loads; emphasis on the energy sector and industrial boilers; analysis restricted to streams only; no attempt to fully account for pollutant behavior; and flexible design, so that future improvements can be incorporated. The basic approach is very similar to the one used by Argonne's ARQUAL model but will allow more complex pollutant behavior and more flexibility in use. (PSB)

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

    SciTech Connect (OSTI)

    Felice, Helene; Caspi, Shlomo; Ferracin, Paolo; Kashikhin, Vadim; Novitski, Igor; Sabbi, GianLuca; Zlobin, Alexander

    2008-06-01T23:59:59.000Z

    Insertion quadrupoles with large bore and high gradient are required to upgrade the luminosity of the Large Hadron Collider (LHC). The US LHC Accelerator Research Program is developing Nb{sub 3}Sn technology for the upgrade. This effort includes a series of 1 m long Technology Quadrupoles (TQ), to demonstrate the reproducibility at moderate field, and High-gradient Quadrupoles (HQ) to explore the magnet performance limits in terms of peak fields, forces and stresses. The HQ models are expected to achieve peak fields of 15 T or higher. A coil aperture of 90 mm, corresponding to gradients above 300 T/m, was chosen as the baseline. Peak stresses above 150 MPa are expected. Progress on the magnetic and mechanical design of the HQ models will be reported.

  13. The Sulfur-Iodine Cycle: Process Analysis and Design Using Comprehensive Phase Equilibrium Measurements and Modeling

    SciTech Connect (OSTI)

    Thies, Mark C.; O'Connell, J. P.; Gorensek, Maximilian B.

    2010-01-10T23:59:59.000Z

    Of the 100+ thermochemical hydrogen cycles that have been proposed, the Sulfur-Iodine (S-I) Cycle is a primary target of international interest for the centralized production of hydrogen from nuclear power. However, the cycle involves complex and highly nonideal phase behavior at extreme conditions that is only beginning to be understood and modeled for process simulation. The consequence is that current designs and efficiency projections have large uncertainties, as they are based on incomplete data that must be extrapolated from property models. This situation prevents reliable assessment of the potential viability of the system and, even more, a basis for efficient process design. The goal of this NERI award (05-006) was to generate phase-equilibrium data, property models, and comprehensive process simulations so that an accurate evaluation of the S-I Cycle could be made. Our focus was on Section III of the Cycle, where the hydrogen is produced by decomposition of hydroiodic acid (HI) in the presence of water and iodine (I2) in a reactive distillation (RD) column. The results of this project were to be transferred to the nuclear hydrogen community in the form of reliable flowsheet models for the S-I process. Many of the project objectives were achieved. At Clemson University, a unique, tantalum-based, phase-equilibrium apparatus incorporating a view cell was designed and constructed for measuring fluid-phase equilibria for mixtures of iodine, HI, and water (known as HIx) at temperatures to 350 °C and pressures to 100 bar. Such measurements were of particular interest for developing a working understanding of the expected operation of the RD column in Section III. The view cell allowed for the IR observation and discernment of vapor-liquid (VL), liquid-liquid, and liquid-liquid-vapor (LLVE) equilibria for HIx systems. For the I2-H2O system, liquid-liquid equilibrium (LLE) was discovered to exist at temperatures up to 310-315 °C, in contrast to the models and predictions of earlier workers. For the I2-HI-H2O ternary, LLE and LLVE were all observed for the first time at temperatures of 160 and 200 °C. Three LLE tie-lines were measured at 160 °C, and preliminary indications are that the underlying phase behavior could result in further improvements in the performance of the S-I Cycle. Unfortunately, these new results were obtained too late in the project to be incorporated into the modeling and simulation work described below. At the University of Virginia, a uniquely complete and reliable model was developed for the thermodynamic properties of HIx, covering the range of conditions expected for the separation of product hydrogen and recycled iodine in the RD column located in Section III. The model was validated with all available property spectroscopy data. The results provide major advances over prior understanding of the chemical speciation involved. The model was implemented in process simulation studies of the S-I Cycle, which showed improvement in energy efficiency to 42%, as well as significantly smaller capital requirements due to lower pressure operation and much smaller equipment sizes. The result is that the S-I Cycle may be much more economically feasible than was previously thought. If both the experimental and modeling work described above were to be continued to ultimate process optimization, both the American public and the global community would benefit from this alternative energy source that does not produce carbon emissions.

  14. Open-Loop Control Design via Parametrization Applied in a Two-Level Quantum System Model

    E-Print Network [OSTI]

    Markku Nihtilä

    2010-02-23T23:59:59.000Z

    In the design of quantum computing devices of the future the basic element is the qubit. It is a two-level quantum system which may describe population transfer from one steady-state to another controlled by a coherent laser field. A four-dimensional real-variable differential equation model is constructed from the complex-valued two-level model describing the wave function of the system. The state transition matrix of the model is constructed via the Wei-Norman technique and Lie algebraic methodology. The idea of parametrization using flatness-based control, is applied to construct feasible input--output pairs of the model. This input drives the state of the system from the given initial state to the given final state in a finite time producing the corresponding output of the pair. The population transfer is obtained by nullifying part of the state vector via careful selection of the parameter functions. A preliminary simulation study completes the paper.

  15. Superior model for fault tolerance computation in designing nano-sized circuit systems

    SciTech Connect (OSTI)

    Singh, N. S. S., E-mail: narinderjit@petronas.com.my; Muthuvalu, M. S., E-mail: msmuthuvalu@gmail.com [Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak (Malaysia); Asirvadam, V. S., E-mail: vijanth-sagayan@petronas.com.my [Electrical and Electronics Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak (Malaysia)

    2014-10-24T23:59:59.000Z

    As CMOS technology scales nano-metrically, reliability turns out to be a decisive subject in the design methodology of nano-sized circuit systems. As a result, several computational approaches have been developed to compute and evaluate reliability of desired nano-electronic circuits. The process of computing reliability becomes very troublesome and time consuming as the computational complexity build ups with the desired circuit size. Therefore, being able to measure reliability instantly and superiorly is fast becoming necessary in designing modern logic integrated circuits. For this purpose, the paper firstly looks into the development of an automated reliability evaluation tool based on the generalization of Probabilistic Gate Model (PGM) and Boolean Difference-based Error Calculator (BDEC) models. The Matlab-based tool allows users to significantly speed-up the task of reliability analysis for very large number of nano-electronic circuits. Secondly, by using the developed automated tool, the paper explores into a comparative study involving reliability computation and evaluation by PGM and, BDEC models for different implementations of same functionality circuits. Based on the reliability analysis, BDEC gives exact and transparent reliability measures, but as the complexity of the same functionality circuits with respect to gate error increases, reliability measure by BDEC tends to be lower than the reliability measure by PGM. The lesser reliability measure by BDEC is well explained in this paper using distribution of different signal input patterns overtime for same functionality circuits. Simulation results conclude that the reliability measure by BDEC depends not only on faulty gates but it also depends on circuit topology, probability of input signals being one or zero and also probability of error on signal lines.

  16. Variable-Speed Wind Turbine Controller Systematic Design Methodology: A Comparison of Non-Linear and Linear Model-Based Designs

    SciTech Connect (OSTI)

    Hand, M. M.

    1999-07-30T23:59:59.000Z

    Variable-speed, horizontal axis wind turbines use blade-pitch control to meet specified objectives for three regions of operation. This paper focuses on controller design for the constant power production regime. A simple, rigid, non-linear turbine model was used to systematically perform trade-off studies between two performance metrics. Minimization of both the deviation of the rotor speed from the desired speed and the motion of the actuator is desired. The robust nature of the proportional-integral-derivative (PID) controller is illustrated, and optimal operating conditions are determined. Because numerous simulation runs may be completed in a short time, the relationship of the two opposing metrics is easily visualized. Traditional controller design generally consists of linearizing a model about an operating point. This step was taken for two different operating points, and the systematic design approach was used. A comparison of the optimal regions selected using the n on-linear model and the two linear models shows similarities. The linearization point selection does, however, affect the turbine performance slightly. Exploitation of the simplicity of the model allows surfaces consisting of operation under a wide range of gain values to be created. This methodology provides a means of visually observing turbine performance based upon the two metrics chosen for this study. Design of a PID controller is simplified, and it is possible to ascertain the best possible combination of controller parameters. The wide, flat surfaces indicate that a PID controller is very robust in this variable-speed wind turbine application.

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

    E-Print Network [OSTI]

    Lu, Xiaoming

    2012-01-01T23:59:59.000Z

    Silla H. Chemical process engineering design and economics.design approach 46 Figure 3.2 Chemical Engineering’Design and Economic Evaluation by Xiaoming Lu Doctor of Philosophy, Graduate Program in Chemical and Environmental Engineering

  18. 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

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

    E-Print Network [OSTI]

    Culler, David E.

    sensor network nodes. Our approach composes models of the basic pieces - solar panels, regulators, energy mW at 3 volts. The supply side is dictated by the incident solar energy, which is a functionDesign, Modeling, and Capacity Planning for Micro-Solar Power Sensor Networks Jay Taneja, Jaein

  20. Systems Modeling and Analysis Industrial Engineers are interested in optimizing the design and operation of complex systems

    E-Print Network [OSTI]

    Dyer, Bill

    Systems Modeling and Analysis Industrial Engineers are interested in optimizing the design and operation of complex systems composed of people and machines using information, materials and energy to produce goods and services. Analyzing such systems with information-driven models is an essential step

  1. Sensitivity Analysis of 2002 Design Guide Distress Prediction Models for Jointed Plain Concrete Pavement

    E-Print Network [OSTI]

    Kannekanti, Venkata N.; Harvey, John T

    2007-01-01T23:59:59.000Z

    of Caltrans. The Rigid Pavement Design Committee sponsoredof Con­ crete in Rigid Pavement Design. In TransportationW1M) Data in California. Pavement Research Center, Institute

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

    SciTech Connect (OSTI)

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

    1996-05-01T23:59:59.000Z

    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.

  3. 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)

    1995-11-01T23:59:59.000Z

    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.

  4. Analysis, modeling, and design of short-wavelength laser-plasma experiments

    SciTech Connect (OSTI)

    Mead, W.C.; Coggeshall, S.V.; Goldman, S.R.; Stover, E.K.; Goldstone, P.D.; Hauer, A.; Kindel, J.M.; Montierth, L.

    1985-01-01T23:59:59.000Z

    We present analysis and LASNEX modeling of two experiments designed to explore the mechanisms and scaling of laser-plasma coupling in high-Z plasmas. The first used layered Au-on-CH spheres irradiated symmetrically using the Omega (Laboratory for Laser Energetics) 0.35 ..mu..m laser to observe the x-ray emission and energy penetration in gold plasmas. Measurements of the subkilovolt and kilovolt emission from targets with varying Au-coating thicknesses were made using diagnostics of varying spectral, temporal, and spatial resolution. The results indicate that the x-ray conversion efficiency is a function of target size, with larger targets yielding x-ray emission in excellent agreement with calculations. The x-ray emission fall-off with decreasing gold thickness agrees well with predictions. The second experiment used the Novette (Lawrence Livermore National Laboratory) laser to irradiate solid gold disk targets, examining wavelength scaling to 0.26 ..mu..m. The measured subkilovolt x-ray emission is in good agreement with calculations using mildly inhibited thermal electron transport, indicating enhanced target coupling, compared with previous experiments using smaller spot sizes. The experiment also indicates very low suprathermal electron populations, on the order of 0.1% at about 30 keV effective temperature. Finally, we present preliminary plans and designs for experiments which will use the Aurora 5 kJ, 5 ns, 0.25 ..mu..m KrF laser now being constructed at Los Alamos.

  5. An optical model for an analogy of Parrondo game and designing Brownian ratchets

    E-Print Network [OSTI]

    Si, Tieyan

    2010-01-01T23:59:59.000Z

    An optical model of classical photons propagating through array of many beam splitters is developed to give a physical analogy of Parrondo's game and Parrondo-Harmer-Abbott game. We showed both the two games are reasonable game without so-called game paradox and they are essentially the same. We designed the games with long-term memory on loop lattice and history-entangled game. The strong correlation between nearest two rounds of game can make the combination of two losing game win, lose or oscillate between win and loss. The periodic potential in Brownian ratchet is analogous to a long chain of beam splitters. The coupling between two neighboring potential wells is equivalent to two coupled beam splitters. This correspondence may help us to understand the anomalous motion of exceptional Brownian particles moving in the opposite direction to the majority. We designed the capital wave for a game by introducing correlations into independent capitals instead of sub-games. Playing entangled quantum states in man...

  6. Multiscale Strategic Planning Model for the Design of Integrated Ethanol and Gasoline Supply Chain

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    of concern are related to biomass transportation, supply chain design of bioethanol and its integration

  7. 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

    2011-01-01T23:59:59.000Z

    to use his MathCAD heat transfer model for my design study,neutronics and heat transfer models to add new capabilitiesused in TRIUNE. Heat Transfer Model TRIUNE uses 1D heat

  8. Modeling, Simulation Design and Control of Hybrid-Electric Vehicle Drives

    SciTech Connect (OSTI)

    Giorgio Rizzoni

    2005-09-30T23:59:59.000Z

    Ohio State University (OSU) is uniquely poised to establish such a center, with interdisciplinary emphasis on modeling, simulation, design and control of hybrid-electric drives for a number of reasons, some of which are: (1) The OSU Center for Automotive Research (CAR) already provides an infrastructure for interdisciplinary automotive research and graduate education; the facilities available at OSU-CAR in the area of vehicle and powertrain research are among the best in the country. CAR facilities include 31,000 sq. feet of space, multiple chassis and engine dynamometers, an anechoic chamber, and a high bay area. (2) OSU has in excess of 10 graduate level courses related to automotive systems. A graduate level sequence has already been initiated with GM. In addition, an Automotive Systems Engineering (ASE) program cosponsored by the mechanical and electrical engineering programs, had been formulated earlier at OSU, independent of the GATE program proposal. The main objective of the ASE is to provide multidisciplinary graduate education and training in the field of automotive systems to Masters level students. This graduate program can be easily adapted to fulfill the spirit of the GATE Center of Excellence. (3) A program in Mechatronic Systems Engineering has been in place at OSU since 1994; this program has a strong emphasis on automotive system integration issues, and has emphasized hybrid-electric vehicles as one of its application areas. (4) OSU researchers affiliated with CAR have been directly involved in the development and study of: HEV modeling and simulation; electric drives; transmission design and control; combustion engines; and energy storage systems. These activities have been conducted in collaboration with government and automotive industry sponsors; further, the same researchers have been actively involved in continuing education programs in these areas with the automotive industry. The proposed effort will include: (1) The development of a laboratory facility that will include: electric drive and IC engine test benches; a test vehicle designed for rapid installation of prototype drives; benches for the measurement and study of HEV energy storage components (batteries, ultra-capacitors, flywheels); hardware-in-the-loop control system development tools. (2) The creation of new courses and upgrades of existing courses on subjects related to: HEV modeling and simulation; supervisory control of HEV drivetrains; engine, transmission, and electric drive modeling and control. Specifically, two new courses (one entitled HEV Component Analysis: and the other entitled HEV System Integration and Control) will be developed. Two new labs, that will be taught with the courses (one entitled HEV Components Lab and one entitled HEV Systems and Control lab) will also be developed. (3) The consolidation of already existing ties among faculty in electrical and mechanical engineering departments. (4) The participation of industrial partners through: joint laboratory development; internship programs; continuing education programs; research project funding. The proposed effort will succeed because of the already exceptional level of involvement in HEV research and in graduate education in automotive engineering at OSU, and because the PIs have a proven record of interdisciplinary collaboration as evidenced by joint proposals, joint papers, and co-advising of graduate students. OSU has been expanding its emphasis in Automotive Systems for quite some time. This has led to numerous successes such as the establishment of the Center of Automotive Research, a graduate level course sequence with GM, and numerous grants and contracts on automotive research. The GATE Center of Excellence is a natural extension of what educators at OSU already do well.

  9. 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.

    2013-06-01T23:59:59.000Z

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

  10. 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

    2012-10-02T23:59:59.000Z

    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.

  11. Six-Degree-of-Freedom Sensor Fish Design: Governing Equations and Motion Modeling

    SciTech Connect (OSTI)

    Deng, Zhiqun; Richmond, Marshall C.; Simmons, Carver S.; Carlson, Thomas J.

    2004-08-19T23:59:59.000Z

    The Sensor Fish device is being used at Northwest hydropower projects to better understand the conditions fish experience during passage through hydroturbines and other dam bypass alternatives. Since its initial development in 1997, the Sensor Fish has undergone numerous design changes to improve its function and extend the range of its use. The most recent Sensor Fish design, the three degree of freedom (3DOF) device, has been used successfully to characterize the environment fish experience when passing through turbines, in spill, or in engineered fish bypass facilities at dams. Pacific Northwest National Laboratory (PNNL) is in the process of redesigning the current 3DOF Sensor Fish device package to improve its field performance. Rate gyros will be added to the new six degree of freedom (6DOF) device so that it will be possible to observe the six linear and angular accelerations of the Sensor Fish as it passes the dam. Before the 6DOF Sensor Fish device can be developed and deployed, governing equations of motion must be developed in order to understand the design implications of instrument selection and placement within the body of the device. In this report, we describe a fairly general formulation for the coordinate systems, equations of motion, force and moment relationships necessary to simulate the 6DOF movement of an underwater body. Some simplifications are made by considering the Sensor Fish device to be a rigid, axisymmetric body. The equations of motion are written in the body-fixed frame of reference. Transformations between the body-fixed and interial reference frames are performed using a formulation based on quaternions. Force and moment relationships specific to the Sensor Fish body are currently not available. However, examples of the trajectory simulations using the 6DOF equations are presented using existing low and high-Reynolds number force and moment correlations. Animation files for the test cases are provided in an attached CD. The next phase of the work will focus on the refinement and application of the 6DOF simulator developed in this project. Experimental and computational studies are planned to develop a set of force and moment relationships that are specific to the Sensor Fish body over the range of Reynolds numbers that it experiences. Lab testing of prototype 6DOF Sensor Fish will also allow for refinement of the trajectory simulations through comparison with observations in test flumes. The 6DOF simulator will also be an essential component in tools to analyze field data measured using the next generation Sensor Fish. The 6DOF simulator will be embedded in a moving-machinery computational fluid dynamics (CFD) model for hydroturbines to numerically simulate the 6DOF Sensor Fish.

  12. E-Print Network 3.0 - aided design models Sample Search Results

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

    design was used with the two levels of aid... demonstrated the role of driver trust in in-vehicle navigation aid use and has implications for designing... .0004) for the automation...

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

    E-Print Network [OSTI]

    Ufongene, Charles Mmaduka

    2008-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Thornton, Mitchell

    Dallas TX 75275 {coyle, mitch}@engr.smu.edu Abstract The SMU Co-Design Project is an effort to target provides an overview of the SMU Co-Design project and related #12;technologies; section 3 describes the implications of this work and future directions, and section 5 provides a summary. 2 The SMU Co-Design Project

  15. 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

  16. 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.

    2005-10-01T23:59:59.000Z

    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.

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

    Energy Savers [EERE]

    opportunities." Currently, twenty university-led teams from the United States, Canada, Germany, and Spain are competing in DOE's fourth Solar Decathlon to design, build, and...

  18. Design and Modeling of the NU Smart Space Drilling System (SSDS) Yinghui Liu, Brian Weinberg, Constantinos Mavroidis*

    E-Print Network [OSTI]

    Mavroidis, Constantinos

    1 Design and Modeling of the NU Smart Space Drilling System (SSDS) Yinghui Liu, Brian Weinberg: http://www.coe.neu.edu/~mavro * Associate Professor, Corresponding Author Abstract Deep space drilling Drilling System (SSDS), which is currently being developed at Northeastern University (NU), is a compact

  19. Designing a model for the African Science and Innovation Facility to implement the Science and Technology Consolidated Plan of Action

    E-Print Network [OSTI]

    Designing a model for the African Science and Innovation Facility to implement the Science and Technology Consolidated Plan of Action A study commissioned by NEPAD's Office of Science and Technology been prepared in response to a request from NEPAD's Office of Science and Technology for a review

  20. 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

  1. A speed prediction model for a U.S. operating speed-based design consistency procedure on two-lane rural highways

    E-Print Network [OSTI]

    Ottesen, Jeffery Lynn

    1993-01-01T23:59:59.000Z

    was selected (MSE=l0. 43, R'=0. 802). No significant difference was found between the estimated values gencratcd by fourth-order polynomial model and the simple linear model (or=0. 05). Other factors such as the posted speed limit and operational... the design speed concept exclusively. ~g speed- based geometric design attempts to do what the design speed concept originally intended: Transportation Resemh Record 1195, National Research Council, Washington, D. C. , 1988, is used as a model...

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

    SciTech Connect (OSTI)

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

    2011-09-01T23:59:59.000Z

    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).

  3. Critical Simulation Based Evaluation of Thermally Activated Building Systems (TABS) Design Models

    E-Print Network [OSTI]

    Basu, Chandrayee

    2012-01-01T23:59:59.000Z

    results of water supply temperature, cooling capacity andcooling energy 34 Water supplyThe cooling generation source will be designed to supply the

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

    E-Print Network [OSTI]

    Roberts, David C. (David Christopher)

    2002-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Lu, Xiaoming

    2012-01-01T23:59:59.000Z

    However, the issue of heat supply can be resolved throughis designated with heat supply by combusting the leftovera fired furnace setup for heat supply. Most commercial steam

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

    SciTech Connect (OSTI)

    Robert Enick; Erick Beckman; J. Karl Johnson

    2009-08-31T23:59:59.000Z

    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.

  7. Adaptive multi-domain thermal modeling and analysis for integrated circuit synthesis and design

    E-Print Network [OSTI]

    Dick, Robert

    -package thermal analysis is necessary for the de- sign and synthesis of reliable, high-performance, low-power responsible for a substantial proportion of overall power consumption in commercial designs and increases with temperature [3]. To enable reliable and low-power IC design, run-time thermal profiles must be predicted

  8. 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

  9. 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

  10. 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

  11. 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

    2011-01-01T23:59:59.000Z

    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

  12. 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 ...

  13. Incident and Accident Investigation techniques to Inform Model Based Design of Safety Critical Interactive Systems

    E-Print Network [OSTI]

    Basnyat, S.; Chozos, N.; Johnson, C.W.

    Basnyat,S. Chozos,N. Johnson,C.W. Palanque,P. M. Harrison (ed.), Design, Specification and Verification of Interactive Systems 2005, Springer Verlag, Berlin, Germany, Lecture Notes in Computing Science 3941. pp 51-66 Springer Verlag

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

    E-Print Network [OSTI]

    Wang, Andrew Yu, 1976-

    2005-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Jung, Youn Su

    2010-10-12T23:59:59.000Z

    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 many important roles...

  16. Conversion of methanol to light olefins on SAPO-34: kinetic modeling and reactor design

    E-Print Network [OSTI]

    Al Wahabi, Saeed M. H.

    2005-02-17T23:59:59.000Z

    design of an MTO reactor, accounting for the strong exothermicity of the process. Multi-bed adiabatic and fluidized bed technologies show good potential for the industrial process for the conversion of methanol into olefins....

  17. Using an Instructional Engineering Method and a Modeling Tool to Design IMS-LD Units of

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -LD Units of Learning Gilbert Paquette, Ileana de la Teja, Michel Léonard, Karin Lund- gren-Cayrol, Olga designers, in that it represents a more pedagogical viewpoint than software engineering graphical languages

  18. Computational models with thermodynamic and composition features improve siRNA design

    E-Print Network [OSTI]

    Shabalina, Svetlana A.

    Background: Small interfering RNAs (siRNAs) have become an important tool in cell and molecular biology. Reliable design of siRNA molecules is essential for the needs of large functional genomics projects. Results: To ...

  19. Quantitative Selection and Design of Model Generation Architectures for On-Orbit Autonomous Assembly

    E-Print Network [OSTI]

    Assembly Swati Mohan, David W. Miller March 2010 SSL # 3-10 #12;#12;Quantitative Selection and Design SSL # 3-10 This work is based on the unaltered text of the thesis by Swati Mohan submitted

  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.

    1994-01-01T23:59:59.000Z

    Careful long term decisions in the design and operation of buildings can significantly improve the thermal performance and thus reduce the consumption of energy. The availability and ease of use of today's computers can be a sigruficant benefit...

  1. Doubling or Splitting: Strategies for Modeling and Analyzing Survivable Network Design Problems

    E-Print Network [OSTI]

    Balakrishnan, Anantaram

    Survivability is becoming an increasingly important criterion in network design. This paper studies formulations, heuristic worst-case performance, and linear programming relaxations for two classes of survivable network ...

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

    E-Print Network [OSTI]

    Tan, Gang, 1974-

    2005-01-01T23:59:59.000Z

    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 ...

  3. 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

    2007-01-01T23:59:59.000Z

    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 ...

  4. 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)

    1993-01-01T23:59:59.000Z

    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 ...

  5. 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

    2014-01-01T23:59:59.000Z

    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.

  6. 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-

    2000-01-01T23:59:59.000Z

    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 ...

  7. 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 avoided by efficiently...

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

    E-Print Network [OSTI]

    Lu, Xiaoming

    2012-01-01T23:59:59.000Z

    simulation model of a Battelle biomass-based gasification, Fischer–Tropsch liquefaction and combined-cycle power plant.

  9. Design and Execution of Model Experiments to Validate Numerical Modelling of 2D Ship Operations in Pack Ice

    E-Print Network [OSTI]

    Bruneau, Steve

    in Pack Ice Roelof C. Dragt Offshore Engineering Faculty of Mechanical, Maritime and Material Engineering of experiments to validate a Graphics Processing Unit based numerical modelling of ship operations in 2D pack ice interaction, 2D Model Experiments, Image Processing. I. INTRODUCTION A ship travelling through pack ice

  10. Best practices for system dynamics model design and construction with powersim studio.

    SciTech Connect (OSTI)

    Malczynski, Leonard A.

    2011-06-01T23:59:59.000Z

    This guide addresses software quality in the construction of Powersim{reg_sign} Studio 8 system dynamics simulation models. It is the result of almost ten years of experience with the Powersim suite of system dynamics modeling tools (Constructor and earlier Studio versions). It is a guide that proposes a common look and feel for the construction of Powersim Studio system dynamics models.

  11. RIS-M-2341 THE USE OF FLOW MODELS FOR DESIGN

    E-Print Network [OSTI]

    ; CONTROL SYSTEMS; ENERGY BALANCE; FLOW MODELS; INDUSTRIAL PLANTS; MASS BALANCE; NUCLEAR POWER PLANTS for process plant control. It is shown how flow models representing the topology of mass and energy flows. The modelling methodology leads to the definition of three categories of control tasks. Two tasks relate

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

    E-Print Network [OSTI]

    Wu, Jiun-Yu

    2011-10-21T23:59:59.000Z

    Conventional statistical methods assuming data sampled under simple random sampling are inadequate for use on complex survey data with a multilevel structure and non-independent observations. In structural equation modeling ...

  13. 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.

    2011-01-01T23:59:59.000Z

    information from BIM to Radiance. For Building Integrated Photovoltaic (BIPV), we have researched on how to build solar models in BIM that can calculate solar position and solar insolation. 1.2 Research on BIM simplification methods, BIM topology, and data... we will continue investigating the use of Modelica to integrate the daylighting modeling with thermal modeling. 4 c) BIPV prototypes We have developed a Building Integrated Photovoltaic (BIPV) prototype in the BIM (Autodesk Revit) platform...

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

    E-Print Network [OSTI]

    Sangiovanni-Vincentelli, Alberto

    in very diverse design methodologies with often scarce tool support. De facto standards in terms of speci, essentially because of standardization and integration needs. This is of course problematic for a num- ber;cation mech- anism (graphical or textual language) of choice, as long as it has a sound seman- tical

  15. ALSEP Array E Engineering Model Subpackage No. 1 with PSE -Design

    E-Print Network [OSTI]

    Rathbun, Julie A.

    vibration test report for EEM Subpackage No. 1 with PSE. Prepared by: ex. 1~0JI R. Thomas * Approved by Test Results ,...~ t ....Divlelon LIST OF TABLES .Table Title El::M-SPl/PSE Hardware 2 EEM·S.Pl/PSE Design Limit Vibration Test Levels 3 EEM-SPl/PSE Instrumentation 4 E1£M-SPI/PSE Vibration Response Values

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

    E-Print Network [OSTI]

    Kewcharoenwong, Panitan

    2011-08-08T23:59:59.000Z

    . . . . . . . . . . . 37 III.3. Truckload Applications (TL) . . . . . . . . . . . . . . . . 38 III.4. Telecommunications Applications . . . . . . . . . . . . . . 42 III.5. Positioning in the Current Literature . . . . . . . . . . . 44 IV RELAY NETWORK DESIGN... . . . . . . . . . . . . . . . . . 51 IV.1.2. Benders Decomposition Framework . . . . . . . . 53 ix CHAPTER Page IV.1.3. Approaches for Accelerating the Base Algorithm . 58 IV.1.4. Including the Percentage Circuitry Constraints . . 67 IV.1.5. Computational Experiments...

  17. Wideband Phased Array & Rectenna Design and Modeling for Wireless Power Transmission

    E-Print Network [OSTI]

    Hansen, Jonathan Noel

    2012-02-14T23:59:59.000Z

    -element design is finalized, it is used in a 4x1 array configuration. An array increases the gain, and by utilizing variable phase-shifters to each element, the pattern can be electronically steered in a desired direction. The phase-can be easily adjusted...

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

    E-Print Network [OSTI]

    Lai, Suming

    2014-12-11T23:59:59.000Z

    . First of all, as the supply voltage keeps scaling down towards the sub-threshold regime to further save chip power consumption, circuit delay will become much more vulnerable to supply noise, which indicates that PDN design will have to face an even more...

  19. The Reliable Hub-and-spoke Design Problem: Models and Algorithms

    E-Print Network [OSTI]

    2011-05-31T23:59:59.000Z

    service between nodes and expanding capacities of hubs. [14] extend ... and MA models to derive an optimal network structure that maximizes the expected net-.

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

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    in Asia. Asia will have a strong impact on the global trends in key metals consumption Takashi NishiyamaPASI 2011 PASI 2011: Process Modeling and Optimization for Energy and Sustainability Mineral;Balance between global consumption and the available production Motivation PSE at CICITEM Models

  1. Multiscale Reservoir Simulation: Layer Design, Full Field Pseudoization and Near Well Modeling

    E-Print Network [OSTI]

    Du, Song

    2012-12-10T23:59:59.000Z

    S = averaged saturation of entire model Outlet wS = water saturation at the outlet )(tSOutletw = averaged water saturation at the outlet t = time xt = diffusive time in x direction zt = diffusive time in z direction T =transmissibility Q... Permeability ................................................................. 100 4.3.3 Enhanced Transmissibility ........................................................... 101 4.3.4 Infinite Conductivity Model...

  2. A systems design study of a microturbine jet engine for model applications

    E-Print Network [OSTI]

    Jacox, John Oliver

    1974-01-01T23:59:59.000Z

    , microturbojet engine was designed. To enable the use of less expensive construction materials, a relatively cool turbine inlet temperature of 1100 R was selected. Additionally, a four stage axial flow compressor and a single stage axial flow turbine were... Compressor Considerations. Diffuser Considerations. Combustor Considerations . Turbine Considerations Physical and Mechanical Considerations . CONCLUSIONS AND RECOMMENDATIONS Conclusions. Recommendations. REFERENCES. APPENDIX A. V11 1X X1 21 25...

  3. 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

    2014-01-01T23:59:59.000Z

    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.

  4. 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.

    2012-01-01T23:59:59.000Z

    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 tools (DOE 2.1e, the F...

  5. 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.

    2012-01-01T23:59:59.000Z

    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 tools (DOE 2.1e, the F...

  6. Development of Improved Models and Designs for Coated-Particle Gas Reactor Fuels (I-NERI Annual Report)

    SciTech Connect (OSTI)

    Petti, David Andrew; Maki, John Thomas; Languille, Alain; Martin, Philippe; Ballinger, Ronald

    2002-11-01T23:59:59.000Z

    The objective of this INERI project is to develop improved fuel behavior models for gas reactor coated particle fuels and to develop improved coated-particle fuel designs that can be used reliably at very high burnups and potentially in fast gas-cooled reactors. Thermomechanical, thermophysical, and physiochemical material properties data were compiled by both the US and the French and preliminary assessments conducted. Comparison between U.S. and European data revealed many similarities and a few important differences. In all cases, the data needed for accurate fuel performance modeling of coated particle fuel at high burnup were lacking. The development of the INEEL fuel performance model, PARFUME, continued from earlier efforts. The statistical model being used to simulate the detailed finite element calculations is being upgraded and improved to allow for changes in fuel design attributes (e.g. thickness of layers, dimensions of kernel) as well as changes in important material properties to increase the flexibility of the code. In addition, modeling of other potentially important failure modes such as debonding and asphericity was started. A paper on the status of the model was presented at the HTR-2002 meeting in Petten, Netherlands in April 2002, and a paper on the statistical method was submitted to the Journal of Nuclear Material in September 2002. Benchmarking of the model against Japanese and an older DRAGON irradiation are planned. Preliminary calculations of the stresses in a coated particle have been calculated by the CEA using the ATLAS finite element model. This model and the material properties and constitutive relationships will be incorporated into a more general software platform termed Pleiades. Pleiades will be able to analyze different fuel forms at different scales (from particle to fuel body) and also handle the statistical variability in coated particle fuel. Diffusion couple experiments to study Ag and Pd transport through SiC were conducted. Analysis and characterization of the samples continues. Two active transport mechanisms are proposed: diffusion in SiC and release through SiC cracks or another, as yet undetermined, path. Silver concentration profiles determined by XPS analysis suggest diffusion within the SiC layer, most likely dominated by grain boundary diffusion. However, diffusion coefficients calculated from mass loss measurements suggest a much faster release path, postulated as small cracks or flaws that provide open paths with little resistance to silver migration. Work is ongoing to identify and characterize this path. Work on Pd behavior has begun and will continue next year.

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

    E-Print Network [OSTI]

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

    2011-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    , and commu- nication components has enabled a modern grand vision for real-world Cyber Physical Systems (CPS-triggered control systems explicitly captures in model structure many of the essential relationships in an embedded

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

    E-Print Network [OSTI]

    Glover, Gordon Jason

    2002-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Nagurney, Anna

    and Motivation Literature The Model Examples Summary Photos of oil spill crisis in Gulf of Mexico, May 2010 Anna pollution. For example, free trade may shift pollution-intensive manufacturing processes from countries

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

    E-Print Network [OSTI]

    Lee, Hyun Cheol

    2005-11-01T23:59:59.000Z

    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...

  12. Network Design Formulations, Modeling, and Solution Algorithms for Goods Movement Strategic Planning

    E-Print Network [OSTI]

    Apivatanagul, Pruttipong

    2008-01-01T23:59:59.000Z

    1956). The long haul less-than-truck-load and truckloadare competitive to truck when the line haul is more than 500haul freight demand is decided by the shipper model which represents the truck

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

    SciTech Connect (OSTI)

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

    2008-12-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Soontrapa, Chaiyod

    2005-01-01T23:59:59.000Z

    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 ...

  16. 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

    2010-08-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Siefken, L.J.

    1999-01-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Siefken, Larry James

    1999-02-01T23:59:59.000Z

    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.

  19. 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

    2010-05-31T23:59:59.000Z

    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.

  20. 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.

    2011-05-26T23:59:59.000Z

    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

  1. Modeling and design optimization of adhesion between surfaces at the microscale.

    SciTech Connect (OSTI)

    Sylves, Kevin T. (University of Colorado, Boulder, CO)

    2008-08-01T23:59:59.000Z

    This research applies design optimization techniques to structures in adhesive contact where the dominant adhesive mechanism is the van der Waals force. Interface finite elements are developed for domains discretized by beam elements, quadrilateral elements or triangular shell elements. Example analysis problems comparing finite element results to analytical solutions are presented. These examples are then optimized, where the objective is matching a force-displacement relationship and the optimization variables are the interface element energy of adhesion or the width of beam elements in the structure. Several parameter studies are conducted and discussed.

  2. The design and testing of a first-order logic-based stochastic modeling language.

    SciTech Connect (OSTI)

    Pless, Daniel J.; Rammohan, Roshan (University of New Mexico, Albuquerque, NM); Chakrabarti, Chayan (University of New Mexico, Albuquerque, NM); Luger, George F. (University of New Mexico, Albuquerque, NM)

    2005-06-01T23:59:59.000Z

    We have created a logic-based, Turing-complete language for stochastic modeling. Since the inference scheme for this language is based on a variant of Pearl's loopy belief propagation algorithm, we call it Loopy Logic. Traditional Bayesian networks have limited expressive power, basically constrained to finite domains as in the propositional calculus. Our language contains variables that can capture general classes of situations, events and relationships. A first-order language is also able to reason about potentially infinite classes and situations using constructs such as hidden Markov models(HMMs). Our language uses an Expectation-Maximization (EM) type learning of parameters. This has a natural fit with the Loopy Belief Propagation used for inference since both can be viewed as iterative message passing algorithms. We present the syntax and theoretical foundations for our Loopy Logic language. We then demonstrate three examples of stochastic modeling and diagnosis that explore the representational power of the language. A mechanical fault detection example displays how Loopy Logic can model time-series processes using an HMM variant. A digital circuit example exhibits the probabilistic modeling capabilities, and finally, a parameter fitting example demonstrates the power for learning unknown stochastic values.

  3. EXPERIMENTAL DESIGN APPLICATIONS FOR MODELING AND ASSESSING CARBON DIOXIDE SEQUESTRATION IN SALINE AQUIFERS

    SciTech Connect (OSTI)

    Rogers, John

    2014-08-31T23:59:59.000Z

    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.

  4. 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

  5. Validation of and enhancements to an operating-speed-based geometric design consistency evaluation model 

    E-Print Network [OSTI]

    Collins, Kent Michael

    1995-01-01T23:59:59.000Z

    .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...

  6. A Simulator for high level Petri Nets: Model based design and

    E-Print Network [OSTI]

    ] - a model based graphical Petri Net editor. Our Simulator conforms1 to both ISO/IEC 15909 standards [8 and operations de- fined in ISO/IEC 15909-2 [9]. However, it is easy to complete the implementation of ISO/IEC

  7. Applying Learnable Evolution Model to Heat Exchanger Design Kenneth A. Kaufman and Ryszard S. Michalski*

    E-Print Network [OSTI]

    Michalski, Ryszard S.

    of the evaporator tubes in the heat exchanger of an air conditioner. This is a very difficult problem because conditioner, refrigerant flows through a loop. It is superheated and placed in contact with cooler outside air conditions, manufacturers of air conditioning systems currently assume in their models average operating

  8. System Modeling and Design Optimization for a Next-Generation Unattended Sensor

    SciTech Connect (OSTI)

    McDonald, Benjamin S.; Myjak, Mitchell J.; Hensley, Walter K.; Smart, John E.

    2013-04-01T23:59:59.000Z

    We are developing a next-generation unattendedsensor that can detect and identify radiation sources while operating on battery power for several weeks. The system achieves smaller size and weight over systems that use NaI:Tl and 3He detectors by using a relatively new scintillator, Cs2LiYCl6:Ce:Ce (CLYC). This material can detect both gamma rays and thermal neutrons, has energy resolution of ~4% full width at half maximum at 662 keV, and allows for particle discrimination by pulse amplitude as well as pulse shape. The overall design features an array of sixteen CLYC detectors, each read out by a photomultiplier tube and custom pulse processing electronics. A field-programmable gate array analyzes the energy spectra using computationally efficient algorithms for anomaly detection.

  9. 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)

    2010-06-15T23:59:59.000Z

    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.

  10. 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. [Oak Ridge National Lab., TN (United States); Wemple, C.A.; Jahshan, S.N.; Ryskammp, J.M. [Idaho National Engineering Lab., Idaho Falls, ID (United States)

    1995-08-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Ho, Yenpo

    2014-08-27T23:59:59.000Z

    and giving me helpful suggestions. In addition, I would like to thank Dr. José Silva-Martínez and Dr. Guergana Petrova for serving on my committee. Thanks also go to my friends: Wenzong Wang, Hangtian Lei, Tian Lan, Li-Wei Tseng, Saeed Samadi, Ting... ........................... 7 2.1. The Memristor Theory Background ........................................................... 7 2.2. The Memristor Device Models .................................................................. 8 CHAPTER III DYNAMIC BEHAVIOR...

  12. Decomposition Based Solution Approaches for Multi-product Closed-Loop Supply Chain Network Design Models

    E-Print Network [OSTI]

    Easwaran, Gopalakrishnan

    2010-01-16T23:59:59.000Z

    .1. Solution Representation . . . . . . . . . . . . . . . 61 viii CHAPTER Page IV.2.2. Objective Function Evaluation . . . . . . . . . . . 61 IV.2.3. Construction Heuristics . . . . . . . . . . . . . . . 65 IV.2.4. Neighborhood Functions.... For the sake of clarity in model development and analysis, we refer to the parts as products in the remainder of this document. Also, a supply location that provides new products is referred to as a new product plant (NPP), a supply location where...

  13. Design of Predictive Control Strategies for Active BITIES Systems Using Frequency Domain Models

    E-Print Network [OSTI]

    Chen, Y.; Athienitis, A. K.; Gala, K. E.

    2013-01-01T23:59:59.000Z

    . Source Layer Temperature and Thermal Energy Injection Using discrete frequency response modeling for an assembly consisting of ? layers of material (Figure 3), the oscillatory responses of heat flux ???? ?,? and temperature ???? ?,? at surface 0... top surface 1 2 N 0 l Layer index for the assembly Surface index for each layer 0 l 0 l boundary (e.g. the concrete underneath the source layer). The responses ???? ? and ???? ? at time interval ? at source layer can be calculated...

  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)

    2009-11-15T23:59:59.000Z

    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. Rules and procedures for mapping IDEF1-based manufacturing information models into relational database designs

    E-Print Network [OSTI]

    Gayle, James Gregory

    1985-01-01T23:59:59.000Z

    as to style and content: Robert'E (Chairman oung mmittee) Donald R. Smith (Member) Wii 1 iam . Lfvel (Member) Leland T. Bla ead of Department) August 1985 ABSTRACT Rules and Procedures for Mapping IDEF I ? based Manufacturing Information Models... STUDY The Development of a Classification Scheme Nomenclature Used in the Classification Scheme The Source Document Forms and Types 1 Forms 2 Types 4. 2. 1 Type I Entity Classes 4. 2. Z Type 2 Entity Classes 4. 2. 3 Type 3 Entity Classes 3...

  16. Physical Building Information Modeling for Solar Building Design and Simulation- Annual Report 2012

    E-Print Network [OSTI]

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

    2012-01-01T23:59:59.000Z

    . 6 Figure 6. Radiance rendering of the wall. c) BIM to BiPV We developed a Building Integrated Photovoltaic (BiPV) prototype in a BIM platform (Autodesk Revit) to calculate solar position and determine the amount of solar insolation from given... as the weather file. ? The room is lifted up from the earth, so the floor slab is not attached to the ground. ? This one room model consists of a roof, a floor, and four walls. ? No windows and doors are installed. ? All building components are made up of a...

  17. Development of Computational Tools for Metabolic Model Curation, Flux Elucidation and Strain Design

    SciTech Connect (OSTI)

    Maranas, Costas D

    2012-05-21T23:59:59.000Z

    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. 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. (eds.)

    1984-01-01T23:59:59.000Z

    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.

  19. An investigation of constraint-based component-modeling for knowledge representation in computer-aided conceptual design

    E-Print Network [OSTI]

    Kolb, Mark A.

    1990-01-01T23:59:59.000Z

    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. Integrating digital human modeling into virtual environment for ergonomic oriented design

    E-Print Network [OSTI]

    Ma, Liang; Bennis, Fouad; Hu, Bo; Zhang, Wei

    2010-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Luna Coronado, Jaime

    2008-10-10T23:59:59.000Z

    n e n t S u p p l i e r D i v e rs i f i c a t i o n O rde r 1 3 2 . 6 % 65 2 4 3 . 6 % 87 3 2 3 . 7 % 47 1 5 0 . 3 % 101 2 4 9 . 7 % 99 3 0 . 0 % 0 1 7 0 . 0 % 140 2 1 5 . 0 % 30 3 1 5 . 0 % 30 1 2 F i n a l A s s e m b l y Table 4 Example... the spreadsheet implementation of this model. I would like to thank Dr. Guy L. Curry and the rest of the faculty and staff in the Industrial and Systems Engineering Department at Texas A&M University, who provided me with the most invaluable knowledge I...

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

    E-Print Network [OSTI]

    Luna Coronado, Jaime

    2009-05-15T23:59:59.000Z

    n e n t S u p p l i e r D i v e rs i f i c a t i o n O rde r 1 3 2 . 6 % 65 2 4 3 . 6 % 87 3 2 3 . 7 % 47 1 5 0 . 3 % 101 2 4 9 . 7 % 99 3 0 . 0 % 0 1 7 0 . 0 % 140 2 1 5 . 0 % 30 3 1 5 . 0 % 30 1 2 F i n a l A s s e m b l y Table 4 Example... the spreadsheet implementation of this model. I would like to thank Dr. Guy L. Curry and the rest of the faculty and staff in the Industrial and Systems Engineering Department at Texas A&M University, who provided me with the most invaluable knowledge I...

  3. 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

    2011-07-15T23:59:59.000Z

    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

  4. architecture architecture urban & regional

    E-Print Network [OSTI]

    Hwu, Wen-mei W.

    offer a two-semester program in Versailles, or summers in China or Denmark for students with qualifying experience. Solar Decathlon As part of the U.S. Department of Energy Solar Decathlon, architecture students collaborate on an interdisciplinary team to design, build, and oper- ate an extremely energy-efficient, 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)

    2014-01-29T23:59:59.000Z

    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. Designer Cosmology

    E-Print Network [OSTI]

    Bruce A. Bassett; David Parkinson; Robert C. Nichol

    2005-07-05T23:59:59.000Z

    We highlight the flexibility of the IPSO experiment-design framework by contrasting its application to CMB, weak lensing and redshift surveys. We illustrate the latter with a 10 parameter MCMC D-optimisation of a dark energy redshift survey. When averaged over a standard dark energy model space the resulting optimal survey typically has only one or two redshift bins, located at zoptimisation we show how the statistical power of such surveys is significantly enhanced. Experiment design is aided by the richness of the figure of merit landscape which means one can impose secondary optimisation criteria at little cost. For example, one may choose either to maximally test a single model (such as \\Lambda CDM) or to get the most general model-independent constraints possible (e.g. on a whole space of dark energy models). Such freedom points to a future where cosmological experiments become increasingly specialised and optimisation increasingly important.

  7. Design and Implementation of a reflective Component-based programming and modeling language Bridging the Gap between Component-based Design and

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    de France Ecole des Mines de Douai 941 rue Charles Bourseul 59508 DOUAI Cedex France luc.fabresse@mines-douai.fr Abstract Component-based Software Engineering studies the design, development and maintenance of software practical advantages related to the availability and ma- turity of object-oriented programming languages

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

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

    (Florida) The University of Texas at Austin and Technische Universitaet Muenchen (Germany) University at Buffalo, The State University of New York University of California,...

  9. Affordability Contest Adds New Dimension to Solar Decathlon 2011...

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

    days is budget. In the solar village at West Potomac Park, cost savings are top of mind for the decathletes as well. This year, the Affordability Contest was added as one of...

  10. Shedding Light on the Solar Decathlon 2013 Teams | Department...

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

    Arizona State University and The University of New Mexico are teaming up to create a solar-powered house that adapts to the extreme climate in the Southwest without harming...

  11. Solar Decathlon Update from Secretary Chu | Department of Energy

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

    universe that you can spend 80 hours a week building a home like this with your own brain, your own hands, and still go to school. But it's fabulous. It shows how exciting...

  12. Construction Begins for Solar Decathlon 2011 | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'sEnergyTexas1.SpaceFluor Federal Services -Energy

  13. Energy Department Announces Second 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 onYouTube YouTube Note: Since the YouTube|6721 Federal Register /ofConcentrating Solar Power Systems |

  14. Energy Department Announces Student Teams, Location for 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 onYouTube YouTube Note: Since the YouTube|6721 Federal Register /ofConcentrating Solar Power Systems |Materialat2015 |

  15. Energy Department Announces Student Teams, New Location for 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 onYouTube YouTube Note: Since the YouTube|6721 Federal Register /ofConcentrating Solar Power Systems |Materialat2015 |2013

  16. Energy Department Announces Student Teams for Solar Decathlon 2015 |

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

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

  17. Energy Department Announces Student Teams, Location for Solar Decathlon

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

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  18. Energy Department Announces Student Teams, New Location for Solar Decathlon

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

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  19. Solar Decathlon 2013: Meet the Teams | Department of Energy

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

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  20. Solar Decathlon 2015: Let the Competition Begin | Department of Energy

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

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  1. German Technische Universitat Darmstadt Wins DOE's 2007 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 DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), Geothermal TechnologiesGeothermal energy to contribute toDepartment

  2. Energy, Interior Departments Announce New Location for Solar Decathlon 2011

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic Plan Departmentof EnergyPublic Law of|Energy TechnologyClean Energy|

  3. DOE Solar Decathlon Coming to National Mall | Department of Energy

    Office of Environmental Management (EM)

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  4. Smart Meters Help Balance Energy Consumption at Solar Decathlon |

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

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  5. Solar Decathlon 2013: Let the Building Begin | Department of Energy

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

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  6. Solar Decathlon 2013: Meet the Teams | Department of Energy

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

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  7. Solar Decathlon: How far did they travel? | Department of Energy

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

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  8. Housing Innovation Awards at the Solar Decathlon | Department of Energy

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

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  9. German Technische Universitat Darmstadt Wins DOE's 2007 Solar Decathlon |

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM Flash2011-12 OPAMGeneral Guidance on NEPAGeothermalRenewable Energy

  10. Solar Decathlon: How far did they travel? | 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol HomeFacebookScholarship Fund3Biology| Nationalof

  11. October 14, 2005: 2005 Solar Decathlon | Department of Energy

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

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  12. 2007 Solar Decathlon Closing Ceremony and Awards | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sureReportsofDepartmentSeriesDepartmentSmallRulemakingsElectricity07

  13. 2009 Solar Decathlon Winners Announced | Department of Energy

    Energy Savers [EERE]

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

  14. Solar Decathlon 2013 Infographic: The Path to a Brighter Future |

    Office of Environmental Management (EM)

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  15. Solar Decathlon 2013: Let the Building Begin | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssues DOE's Nuclear EnergySmart Meters and| Department of: Let the

  16. Solar Decathlon Opening Ceremony and VIP Ribbon Cutting | Department of

    Office of Environmental Management (EM)

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  17. Solar Decathlon: Rain and Shine | Department of Energy

    Office of Environmental Management (EM)

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  18. DOE's Solar Decathlon to Highlight Innovation, Future Green Jobs |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof"WaveInteractionsMaterialsDevelopEnergy OakFrequentlyDepartment of

  19. Secretary Chu Congratulates Solar Decathlon Winners | Department of Energy

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

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  20. 2007 Solar Decathlon Closing Ceremony and Awards | Department of Energy

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

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  1. 2011 Solar Decathlon - The Volunteer's Perspective | 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 DataDepartment of Energy Your Density Isn't Your Destiny: The Future of BadTHE U.S.Energy MoreEnergyEnergyWednesday,SPR Report1

  2. Solar Decathlon 2013: Building Skills for Future Careers | Department of

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

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  3. Solar Decathlon 2013: Going the Distance | 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9MorganYou areInnovationPriority |Going the Distance

  4. DOE's Solar Decathlon to Highlight Innovation, Future Green Jobs |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. DepartmentEnergyBoilersPlantofAdministrators |May 2011 version ofDepartment

  5. Department of Energy Considers New Venue for Solar Decathlon 2013 |

    Energy Savers [EERE]

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  6. Department of Energy Considers New Venue for Solar Decathlon 2013 |

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

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  7. University of Colorado Wins 2005 Solar Decathlon | Department of Energy

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  8. Energy Department Announces Student Teams for Solar Decathlon 2015 |

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

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  9. Solar Decathlon 2013: Life After the Competition | Department of Energy

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

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  10. Solar Decathlon: Appalachian State Wins People's Choice Award |

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

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  11. 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)

    2014-01-29T23:59:59.000Z

    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.

  12. Toward a computer-applied dynamic dwelling design model : multi-family walk-up apartments in Taiwan

    E-Print Network [OSTI]

    Chou, Wern-Bin

    1985-01-01T23:59:59.000Z

    It is the objectives of this study to explore the feasibility of applying a computer in a dynamic dwelling design . Here, the computer is applied to evaluate a support design by testing possible layout variations. A specific ...

  13. ATOMIC-LEVEL MODELING OF CO2 DISPOSAL AS A CARBONATE MINERAL: A SYNERGETIC APPROACH TO OPTIMIZING REACTION PROCESS DESIGN

    SciTech Connect (OSTI)

    A.V.G. Chizmeshya; M.J. McKelvy; J.B. Adams

    2001-11-01T23:59:59.000Z

    Fossil fuels, especially coal, can support the energy demands of the world for centuries to come, if the environmental problems associated with CO{sub 2} emissions can be overcome. Permanent and safe methods for CO{sub 2} capture and disposal/storage need to be developed. Mineralization of stationary-source CO{sub 2} emissions as carbonates can provide such safe capture and long-term sequestration. Mg-rich lamellar hydroxide mineral carbonation is a leading process candidate, which generates the stable naturally occurring mineral magnesite (MgCO{sub 3}) and water. Key to process cost and viability are the carbonation reaction rate and its degree of completion. This process, which involves simultaneous dehydroxylation and carbonation is very promising, but far from optimized. In order to optimize the dehydroxylation/carbonation process, an atomic-level understanding of the mechanisms involved is needed. In this investigation Mg(OH){sub 2} was selected as a model Mg-rich lamellar hydrocide carbonation feedstock material due to its chemical and structural simplicity. Since Mg(OH){sub 2} dehydroxylation is intimately associated with the carbonation process, its mechanisms are also of direct interest in understanding and optimizing the process. The aim of the current innovative concepts project is to develop a specialized advanced computational methodology to complement the ongoing experimental inquiry of the atomic level processes involved in CO{sub 2} mineral sequestration. The ultimate goal is to integrate the insights provided by detailed predictive simulations with the data obtained from optical microscopy, FESEM, ion beam analysis, SIMS, TGA, Raman, XRD, and C and H elemental analysis. The modeling studies are specifically designed to enhance the synergism with, and complement the analysis of, existing mineral-CO{sub 2} reaction process studies being carried out under DOE UCR Grant DE-FG2698-FT40112. Direct contact between the simulations and the experimental measurements is provided by computing, from first principles, the equilibrium structures, elastic, optical, and vibrational properties of Mg(OH){sub 2} (brucite), MgO (periclase), MgCO{sub 3} (magnesite), as well as the energetics of the dehydroxylation reaction (Mg(OH){sub 2} {yields} MgO + H{sub 2}O), and the reactivity of CO{sub 2} with MgO and Mg(OH){sub 2}. From these calculations, thermodynamic characteristics of the reaction conditions can be inferred. This kind of information, when integrated with the atomic level data obtained from experimental gas-solid dehydroxylation/carbonation studies, will be used to design optimized reaction processes leading to the practical and cost-effective sequestration of CO{sub 2} in mineral form.

  14. Model of Procedure Usage – Results from a Qualitative Study to Inform Design of Computer-Based Procedures

    SciTech Connect (OSTI)

    Johanna H Oxstrand; Katya L Le Blanc

    2012-07-01T23:59:59.000Z

    The nuclear industry is constantly trying to find ways to decrease the human error rate, especially the human errors associated with procedure use. As a step toward the goal of improving procedure use performance, researchers, together with the nuclear industry, have been looking at replacing the current paper-based procedures with computer-based procedure systems. The concept of computer-based procedures is not new by any means; however most research has focused on procedures used in the main control room. Procedures reviewed in these efforts are mainly emergency operating procedures and normal operating procedures. Based on lessons learned for these previous efforts we are now exploring a more unknown application for computer based procedures - field procedures, i.e. procedures used by nuclear equipment operators and maintenance technicians. The Idaho National Laboratory, the Institute for Energy Technology, and participants from the U.S. commercial nuclear industry are collaborating in an applied research effort with the objective of developing requirements and specifications for a computer-based procedure system to be used by field operators. The goal is to identify the types of human errors that can be mitigated by using computer-based procedures and how to best design the computer-based procedures to do this. The underlying philosophy in the research effort is “Stop – Start – Continue”, i.e. what features from the use of paper-based procedures should we not incorporate (Stop), what should we keep (Continue), and what new features or work processes should be added (Start). One step in identifying the Stop – Start – Continue was to conduct a baseline study where affordances related to the current usage of paper-based procedures were identified. The purpose of the study was to develop a model of paper based procedure use which will help to identify desirable features for computer based procedure prototypes. Affordances such as note taking, markups, sharing procedures between fellow coworkers, the use of multiple procedures at once, etc. were considered. The model describes which affordances associated with paper based procedures should be transferred to computer-based procedures as well as what features should not be incorporated. The model also provides a means to identify what new features not present in paper based procedures need to be added to the computer-based procedures to further enhance performance. The next step is to use the requirements and specifications to develop concepts and prototypes of computer-based procedures. User tests and other data collection efforts will be conducted to ensure that the real issues with field procedures and their usage are being addressed and solved in the best manner possible. This paper describes the baseline study, the construction of the model of procedure use, and the requirements and specifications for computer-based procedures that were developed based on the model. It also addresses how the model and the insights gained from it were used to develop concepts and prototypes for computer based procedures.

  15. 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

  16. An in-depth noise model for giant magnetoresistance current sensors for circuit design and complementary metal–oxide–semiconductor integration

    SciTech Connect (OSTI)

    Roldán, A., E-mail: amroldan@ugr.es; Roldán, J. B. [Department of Electronics and Computer Technology, University of Granada (Spain); Reig, C. [Department of Electronic Engineering, University of Valencia (Spain); Cardoso, S. [INESC-MN and IN, Rua Alves Redol 9, 1000-029 Lisbon (Portugal); Instituto Superior Técnico (IST), Av. Rovisco Pais, 1000-029 Lisbon (Portugal); Cardoso, F. [INESC-MN and IN, Rua Alves Redol 9, 1000-029 Lisbon (Portugal); Ferreira, R. [International Iberian Nanotechnology Laboratory, Braga (Portugal); Freitas, P. P. [INESC-MN and IN, Rua Alves Redol 9, 1000-029 Lisbon (Portugal); International Iberian Nanotechnology Laboratory, Braga (Portugal)

    2014-05-07T23:59:59.000Z

    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.

  17. Model-based design has been touted as the most viable design methodology of the future for the design of embedded hardware/software systems. Due to the large complex-

    E-Print Network [OSTI]

    Bhattacharyya, Shuvra S.

    for the design of embedded hardware/software systems. Due to the large complex- ity of modern embedded systems of computation to enhance their expressive power, while maintaining much of the useful structure transformation methods. We also give three in-depth examples of complex systems that we have studied

  18. 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.

    . Experimental verification is shown. I. INTRODUCTION Models used in power electronics simulation are typically-based models. When evaluating thermal system performance, a behavioral model that includes both conduction a nonlinear capacitor to model switching behavior more accurately. A more complex system developed in [5

  19. Abstract--In order to design a model based controller availability of a linear model of the system to be controlled is

    E-Print Network [OSTI]

    Boyer, Edmond

    -elastic simulators. The use of such linearized models describing the WT dynamics was a real breakthrough, since of the resulting models is unnecessarily high for describing the plant dynamics, including non- observable modes, mechanical modelling, electrical models, etc. Based on these researches, some advanced WT simulation tools

  20. 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

    2010-01-01T23:59:59.000Z

    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 ...

  1. Computational ligand design and analysis in protein complexes using inverse methods, combinatorial search, and accurate solvation modeling

    E-Print Network [OSTI]

    Altman, Michael Darren

    2006-01-01T23:59:59.000Z

    This thesis presents the development and application of several computational techniques to aid in the design and analysis of small molecules and peptides that bind to protein targets. First, an inverse small-molecule ...

  2. Exploring the use of Model-Based Systems Engineering (MBSE) to develop systems architectures in naval ship design

    E-Print Network [OSTI]

    Tepper, Nadia A

    2010-01-01T23:59:59.000Z

    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, ...

  3. Laboratories for the 21st Century: Best Practices Guide: Modeling Exhaust Dispersion for Specifying Acceptable Exhaust/Intake Design

    Broader source: Energy.gov [DOE]

    Guide describes 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.

  4. Design of active suspension control based upon use of tubular linear motor and quarter-car model 

    E-Print Network [OSTI]

    Allen, Justin Aaron

    2008-10-10T23:59:59.000Z

    The design, fabrication, and testing of a quarter-car facility coupled with various control algorithms are presented in this thesis. An experimental linear tubular motor, capable of producing a 52-N force, provides control ...

  5. Development of Improved Models and Designs for Coated-Particle Gas Reactor Fuels -- Final Report under the International Nuclear Energy Research Initiative (I-NERI)

    SciTech Connect (OSTI)

    David Petti; Philippe Martin; Mayeul Phélip; Ronald Ballinger; Petti does not have NT account

    2004-12-01T23:59:59.000Z

    The objective of this INERI project was to develop improved fuel behavior models for gas reactor coated-particle fuels and to explore improved coated-particle fuel designs that could be used reliably at very high burnups and potentially in gas-cooled fast reactors. Project participants included the Idaho National Engineering Laboratory (INEEL), Centre Étude Atomique (CEA), and the Massachusetts Institute of Technology (MIT). To accomplish the project objectives, work was organized into five tasks.

  6. 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

    2011-08-01T23:59:59.000Z

    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.

  7. Design and modeling of cylindrical and falt-wound lithium-ion cells for the PNGV application.

    SciTech Connect (OSTI)

    Nelson, P. A.; Henriksen, G. L.; Amine, K.

    2000-11-10T23:59:59.000Z

    In this study, 10-Ah cylindrical and flat-wound cells were designed and studied for use in batteries for the Partnership for a New Generation of Vehicles (PNGV). A low-cost current collection system was devised that results in a low resistance. Heat rejection from flat cells is much better than that from cylindrical cells and is an important safety factor. Very compact, powerful batteries of about 1.5 kW/L can be designed with wound lithium-ion cells.

  8. 1.1 Abstract In this thesis, we have designed a core model of microprocessor that can be used for

    E-Print Network [OSTI]

    software should be loaded into the memory. It can perform simulation without any original software at the start of the design. Therefore methods for faster performance simulation are always attractive of a system comprising of two processors sharing a single memory, we are only interested in knowing how

  9. IEEE TRANSACTIONS ON ELECTRON DEVICES, VOL. 56, NO. 8, AUGUST 2009 1567 Modeling, Analysis, and Design of Graphene

    E-Print Network [OSTI]

    , and Design of Graphene Nano-Ribbon Interconnects Chuan Xu, Student Member, IEEE, Hong Li, Student Member, IEEE, and Kaustav Banerjee, Senior Member, IEEE Abstract--Graphene nanoribbons (GNRs) are considered insights into the process technology development for GNR interconnects. Index Terms--Armchair graphene

  10. New National Conservation Training Center a model of energy-efficient design: FEMP technical assistance case study fact sheet

    SciTech Connect (OSTI)

    Atkison, K.

    1998-10-07T23:59:59.000Z

    This FEMP technical assistance case study shows that energy efficiency, cost effectiveness, and aesthetics can be incorporated into the design of a Federal facility--in this case the National Conservation Training Center in Shepherdstown, WV, which encompasses many buildings with a variety of purposes.

  11. Combustion processes in black liquor recovery: Analysis and interpretation of combustion rate data and an engineering design model

    SciTech Connect (OSTI)

    Fredrick, W.J.

    1990-03-01T23:59:59.000Z

    The overall objective of this project is to develop computational models for predicting the combustion times for black liquor droplets in a recovery furnace environment. These models are needed as an important component of large-scale, global recovery boiler models. The work is divided into two tasks: interpretation of experimental black liquor single droplet combustion data from two laboratories; and formulation and evaluation of computational models for the stages of combustion of black liquor droplets. This report contains the results of the project. 109 refs., 64 figs., 12 tabs.

  12. Vernier caliper and micrometer computer models using Easy Java Simulation and its pedagogical design feature-ideas to augment learning with real instruments

    E-Print Network [OSTI]

    Wee, Loo Kang

    2014-01-01T23:59:59.000Z

    This article presents the customization of EJS models, used together with actual laboratory instruments, to create an active experiential learning of measurements. The laboratory instruments are the vernier caliper and the micrometer. Three computer model design ideas that complement real equipment are discussed in this article. They are 1) the simple view and associated learning to pen and paper question and the real world, 2) hints, answers, different options of scales and inclusion of zero error and 3) assessment for learning feedback. The initial positive feedback from Singaporean students and educators points to the possibility of these tools being successfully shared and implemented in learning communities, and validated. Educators are encouraged to change the source codes of these computer models to suit their own purposes, licensed creative commons attribution for the benefit of all humankind. Video abstract: http://youtu.be/jHoA5M-_1R4

  13. Design and Analysis of TQS01, a 90 mm Nb3Sn Model Quadrupole for LHC Luminosity Upgrade Based on a Key and Bladder Assembly

    SciTech Connect (OSTI)

    Caspi, S.; Ambrosio, G.; Andreev, N.; Barzi, E.; Bossert, R.C.; Dietderich, D.R.; Ferracin, P.; Ghosh, A.; Gourlay, S.A.; Hafalia, A.R.; Hannaford, C.R.; Kashikhin, V.S.; Kashikhin, V.V.; Lietzke, A.F.; Mattafirri, S.; McInturff, A.D.; Novitsky, I.V.; Sabbi, G.L.; Turrioni, D.; Yamada, R.; Zlobin, A.V.

    2006-06-01T23:59:59.000Z

    The US LHC Accelerator Research Program (LARP) is developing Nb{sub 3}Sn accelerator magnet technology for the LHC luminosity upgrade. Two 90 mm 'Technology Quadrupole' models (TQS01, TQC01) are being developed in close collaboration between LBNL and FNAL, using identical coil design, but two different support structures. The TQS01 structure was developed and tested at LBNL. With this approach coils are supported by an outer aluminum shell and assembled using keys and bladders. In contrast, the second model TQC01, utilize stainless steel collars and a thick stainless steel skin. This paper describes the TQS01 model magnet, its 3D ANSYS stress analysis, and anticipated instrumentation and assembly procedure.

  14. 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

    will revolutionise the way gas turbine (and other) materials are developed. A wide range of computer modelling) Cluster variation method modelling of a potential new turbine disc material: NiTi/Ni2TiAl. (iii) Ab Department of Materials Science and Metallurgy University of Cambridge Pembroke Street, Cambridge, CB2 3QZ 1

  15. 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

    2011-11-01T23:59:59.000Z

    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.

  16. 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.

    2012-04-01T23:59:59.000Z

    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).

  17. 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

    2009-03-16T23:59:59.000Z

    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.

  18. 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

    2011-11-28T23:59:59.000Z

    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.

  19. A Model-Based Assessment and Design of a Tropical Indian Ocean Mooring Array PETER R. OKE AND ANDREAS SCHILLER

    E-Print Network [OSTI]

    Oke, Peter

    circulation model. This system produces maps of the depth of the 20°C isotherm (D20), representing interannual devices such as bottle casts or CTDs. Today, most ocean observations are gathered by satellite- borne

  20. 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

    defined in MCNP. There are a number of approaches in parallel high performance computing that can and 7,168 GPUs. The high performance computing industry is moving toward a hybrid computer model, where

  1. 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

    2007-04-25T23:59:59.000Z

    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 condition correlations were...

  2. 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

    2013-06-30T23:59:59.000Z

    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.

  3. 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

    2011-01-01T23:59:59.000Z

    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 ...

  4. The Texas Solar D House

    E-Print Network [OSTI]

    Garrison, M.

    2004-01-01T23:59:59.000Z

    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 needs using a solar...

  5. Stochastic Dynamic Programming and Stochastic Fluid-Flow Models in the Design and Analysis of Web-Server Farms

    E-Print Network [OSTI]

    Goel, Piyush

    2010-10-12T23:59:59.000Z

    tra c shares all of the leftover bandwidth from Class-1 tra c. Hence, for example, if there are n1 Class-1 and n2 Class-2 requests being served by the system, all of the Class-1 requests would be allocated bandwidth b each, whereas the Class-2 request... of Technology, Bombay Chair of Advisory Committee: Dr. Natarajan Gautam A Web-server farm is a specialized facility designed speci cally for housing Web servers catering to one or more Internet facing Web sites. In this dissertation, sto- chastic dynamic...

  6. Laboratories for the 21st Century: Best Practices; Modeling Exhaust Dispersion for Specifying Acceptable Exhaust/Intake Design (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-09-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    is undertaken in this paper. A one-dimensional model of a thermoelectric unit cell with a SMA junction. Semiconductorshave been used for localized cooling, employing the thermoelectricPeltier eect. Depending on the direction of the current, the Peltier eect can be used as a heat sink (refriger- ation) or as a heat source

  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. 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

  10. A method for measuring joint kinematics designed for accurate registration of kinematic data to models constructed from CT data

    E-Print Network [OSTI]

    Fischer, Kenneth J.; Manson, T. T.; Pfaeffle, H. J.; Tomaino, M. M.; Woo, S. L-Y

    2001-03-01T23:59:59.000Z

    for position and 0.1 degrees for orientation for linkage digitization and better than +/- 0.2 mm and +/- 0.2 degrees for CT digitization. Surface models of the radius and ulna were constructed from CT data, as an example application. Kinematics of the bones...

  11. The Role of External Environment of a Device in the Functional Modelling of Engineering Devices for Adaptive Design

    E-Print Network [OSTI]

    Prabhakar, Sattiraju

    1 The Role of External Environment of a Device in the Functional Modelling of Engineering Devices Ashok Goel College of Computing Georgia Institute of Technology USA Abstract: External environments research, the external environment has been given a minimal role. In this paper, first we present

  12. Modeling CO{sub 2} and H{sub 2}S solubility in MDEA and DEA: Design implications

    SciTech Connect (OSTI)

    Rochelle, G.T.; Posey, M. [Univ. of Texas, Austin, TX (United States)

    1996-12-31T23:59:59.000Z

    The solubility of H{sub 2}S and CO{sub 2} in aqueous alkanolamines affects solution capacity and the required circulation rate for acid gas absorption. These thermodynamics also determine the relationship of steam rate and the lean loading of the solution which in turn sets the leak of acid gas from the top of the absorber. Finally, the mechanisms of mass transfer and the role of kinetics, especially in stripping, depend on the vapor/liquid equilibria. Published measurements of CO{sub 2} and H{sub 2}S solubility in methyldiethanolamine (MDEA) and diethanolamine (DEA) are not in general agreement, especially at low loading of acid gas. The available sets of solubility data have been regressed with the AspenPlus electrolyte/NRTL model. All of the parameters and constants that make up this model have been carefully evaluated. Independent thermodynamic data such as freezing point and heat of mixing have been included in the regression to strengthen the estimates of model parameters. The parameters for each set of solubility data have been evaluated in an attempt to determine which set is correct. Each evaluated model has been used to calculate the acid gas capacity and minimum stripping steam rate for several industrial cases of acid gas absorption/stripping.

  13. International Congress Design and Modelling of Mechanical Systems CMSM'2009 March 16-18, 2009 Hammamet, Tunisia 1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Hammamet, Tunisia 1 Models and methods for knowledge formalisation in a PLM context Alain BERNARDa an efficient PLM system. This strategic need mainly comes from the new relationship that subcontractors have for PLM integration. SMEs need specific PLM environments but the main difficulty is to succeed in defining

  14. 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)

    2006-11-01T23:59:59.000Z

    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.

  15. Design and Fabrication of a Single-Aperture 11T Nb3Sn Dipole Model for LHC Upgrades

    SciTech Connect (OSTI)

    Andreev, N.; Apollinari, G.; Barzi, E.; Bossert, R.; Nobrega, F.; Novitski, I.; Turrioni, D.; Yamada, R.; Zlobin, A.V.; /Fermilab; Auchmann, B.; Karppinen, M.; /CERN

    2011-11-28T23:59:59.000Z

    The planned upgrade of the LHC collimation system includes additional collimators to be installed in the dispersion suppressor areas of points 2, 3 and 7. To provide the necessary longitudinal space for the collimators, a replacement of 8.33 T Nb-Ti LHC main dipoles with 11 T dipoles based on Nb{sub 3}Sn superconductor compatible with the LHC lattice and main systems is being considered. To demonstrate this possibility FNAL and CERN have started a joint program to develop a 2 m long single-aperture dipole magnet with the nominal field of 11 T at {approx}11.85 kA current and 60 mm bore. This paper describes the demonstrator magnet magnetic and mechanical designs and analysis, coil fabrication procedure. The Nb{sub 3}Sn strand and cable parameters and test results are also reported.

  16. Alternative energy design toolkit

    E-Print Network [OSTI]

    Sukkasi, Sittha

    2004-01-01T23:59:59.000Z

    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 ...

  17. 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. [Los Alamos National Laboratory

    2012-06-07T23:59:59.000Z

    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.

  18. Contemporary Strategies for Sustainable Design 

    E-Print Network [OSTI]

    Farias, Francisco

    2013-04-05T23:59:59.000Z

    This exploratory research examined the degree of adoption and impact of the concepts of Building Information Model (BIM), Integrated Project Delivery (IPD), Integrated Design Process (IDP) and Building Energy Simulation (BES) on the design processes...

  19. Design with Uncertain Technology Evolution 

    E-Print Network [OSTI]

    Arendt, Jonathan Lee

    2012-10-19T23:59:59.000Z

    Design is an uncertain human activity involving decisions with uncertain outcomes. Sources of uncertainty in product design include uncertainty in modeling methods, market preferences, and performance levels of subsystem technologies, among many...

  20. Contemporary Strategies for Sustainable Design

    E-Print Network [OSTI]

    Farias, Francisco

    2013-04-05T23:59:59.000Z

    This exploratory research examined the degree of adoption and impact of the concepts of Building Information Model (BIM), Integrated Project Delivery (IPD), Integrated Design Process (IDP) and Building Energy Simulation (BES) on the design processes...

  1. 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.

    2013-06-01T23:59:59.000Z

    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.

  2. 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

    2015-01-01T23:59:59.000Z

    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.

  3. 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.

    2011-09-30T23:59:59.000Z

    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.

  4. Material-based design computation

    E-Print Network [OSTI]

    Oxman, Neri

    2010-01-01T23:59:59.000Z

    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 ...

  5. A multiobjective, multidisciplinary design optimization methodology for the conceptual design of distributed satellite systems

    E-Print Network [OSTI]

    Jilla, Cyrus D., 1974-

    2002-01-01T23:59:59.000Z

    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 ...

  6. Energy Blog | Department of Energy

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

    at Urbana-Champaign Solar Decathlon Team. Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the Wake of Disasters For this year's Solar Decathlon, the...

  7. Emergency Response & Procedures | Department of Energy

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

    at Urbana-Champaign Solar Decathlon Team. Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the Wake of Disasters For this year's Solar Decathlon, the...

  8. 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. [International Archaeological Research Inst., Inc., Honolulu, HI (United States)

    1994-07-01T23:59:59.000Z

    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.

  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)

    1995-06-01T23:59:59.000Z

    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. Multifidelity methods for multidisciplinary design under uncertainty

    E-Print Network [OSTI]

    Christensen, Daniel Erik

    2012-01-01T23:59:59.000Z

    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. ...

  11. 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)

    2011-01-01T23:59:59.000Z

    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, ...

  12. Center for Energy Efficient Design

    High Performance Buildings Database

    Rocky Mount, VA As the first Passivhaus public school in North America, the Center for Energy Efficient Design (CEED) in Rocky Mount, Virginia, is a national model for green school construction. An extension of The Leonard A.

  13. Degree design of coupled infrastructures

    E-Print Network [OSTI]

    Hover, Franz S.

    2011-01-01T23:59:59.000Z

    A recent asymptotic model of cascading failure in two-domain, coupled infrastructures is used to pose and solve a specific degree-distribution design problem. Low-order non-linear analysis exposes the mechanisms by which ...

  14. Digital fabrication in the architectural design process

    E-Print Network [OSTI]

    Seely, Jennifer C. K., 1975-

    2004-01-01T23:59:59.000Z

    Digital fabrication is affecting the architectural design process due to the increasingly important role it has in the fabrication of architectural models. Many design professionals, professors, and students have experienced ...

  15. 4.212 Design Fabrication, Spring 2003

    E-Print Network [OSTI]

    Sass, Lawrence

    Design Fabrication is an introductory course in the field of advanced computing, prototyping and building fabrication. The class is focused on the relationship between design, various forms of computer modeling both explicit ...

  16. Storied objects: design thinking with time

    E-Print Network [OSTI]

    Lee, Hyun-Yeul.

    2007-01-01T23:59:59.000Z

    The traditional approach to the design of everyday objects is articulated by form and function. This thesis aims to model an approach to design thinking that extends the praxis of form and function to include the expression ...

  17. 2015 Hydrogen Student Design Contest Challenges Students to Develop...

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

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

  18. Interactive design center.

    SciTech Connect (OSTI)

    Pomplun, Alan R. (Sandia National Laboratories, Livermore, CA)

    2005-07-01T23:59:59.000Z

    Sandia's advanced computing resources provide researchers, engineers and analysts with the ability to develop and render highly detailed large-scale models and simulations. To take full advantage of these multi-million data point visualizations, display systems with comparable pixel counts are needed. The Interactive Design Center (IDC) is a second generation visualization theater designed to meet this need. The main display integrates twenty-seven projectors in a 9-wide by 3-high array with a total display resolution of more than 35 million pixels. Six individual SmartBoard displays offer interactive capabilities that include on-screen annotation and touch panel control of the facility's display systems. This report details the design, implementation and operation of this innovative facility.

  19. Modeling, design and thermal performance of a BIPV/T system thermally coupled with a ventilated concrete slab in a low energy solar house: Part 2, ventilated concrete slab

    SciTech Connect (OSTI)

    Chen, Yuxiang; Galal, Khaled; Athienitis, A.K. [Dept. of Building, Civil and Environmental Engineering, Concordia University, 1455 De Maisonneuve West, EV6.139, Montreal, Quebec (Canada)

    2010-11-15T23:59:59.000Z

    This paper is the second of two papers that describe the modeling and design of a building-integrated photovoltaic-thermal (BIPV/T) system thermally coupled with a ventilated concrete slab (VCS) adopted in a prefabricated, two-storey detached, low energy solar house and their performance assessment based on monitored data. The VCS concept is based on an integrated thermal-structural design with active storage of solar thermal energy while serving as a structural component - the basement floor slab ({proportional_to}33 m{sup 2}). This paper describes the numerical modeling, design, and thermal performance assessment of the VCS. The thermal performance of the VCS during the commissioning of the unoccupied house is presented. Analysis of the monitored data shows that the VCS can store 9-12 kWh of heat from the total thermal energy collected by the BIPV/T system, on a typical clear sunny day with an outdoor temperature of about 0 C. It can also accumulate thermal energy during a series of clear sunny days without overheating the slab surface or the living space. This research shows that coupling the VCS with the BIPV/T system is a viable method to enhance the utilization of collected solar thermal energy. A method is presented for creating a simplified three-dimensional, control volume finite difference, explicit thermal model of the VCS. The model is created and validated using monitored data. The modeling method is suitable for detailed parametric study of the thermal behavior of the VCS without excessive computational effort. (author)

  20. THE PASSIVE SOLAR DESIGN PROCESS FOR A SMALL OFFICE/LABORATORY BUILDING

    E-Print Network [OSTI]

    Andersson, Brandt

    2011-01-01T23:59:59.000Z

    22-26. 1979 THE PASSIVE SOLAR DESIGN PROCESS FOR A SMALLso important in passive solar designs. Computer models suchinterpretation. SUMMARY Passive solar design is an integral

  1. Design, improvement, and testing of a thermal-electrical analysis application of a multiple beta-tube AMTEC converter

    E-Print Network [OSTI]

    Pavlenko, Ilia V.

    2004-09-30T23:59:59.000Z

    A new design AMTEC converter model was developed, and its effectiveness as a design tool was evaluated. To develop the model, requirements of the model were defined, several new design models were successively developed, and finally an optimal new...

  2. MODELING, IDENTIFICATION AND CONTROL, 2006, VOL. 00, NO. 0, 000000 Control Design for a Gas Turbine Cycle with CO2 Capture

    E-Print Network [OSTI]

    Foss, Bjarne A.

    Turbine Cycle with CO2 Capture Capabilities¶ DAGFINN SNARHEIM, LARS IMSLAND, BJARNE A. FOSS*, RAGNHILD ULFSNES and OLAV BOLLAND Keywords: Control structure, integrated process design, power production, CO2) as an alternative for power production with CO2 capture capabilities. This article is concerned with two critical

  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

    2011-01-01T23:59:59.000Z

    Quantification in Fuel Performance Modeling . . . . . . .3.4 Integration with Fuel Performance Calculations ivmicroscopic image of a TRISO fuel particle cracked open to

  4. 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

    2011-01-01T23:59:59.000Z

    Models and Methodologies incineration [49, 51, 57]. Duringlater in life. The incineration phase involves operation atoperation ends and incineration phase operation begins, on

  5. SAMPLING DECISIONS IN OPTIMUM EXPERIMENTAL DESIGN IN ...

    E-Print Network [OSTI]

    ssager

    on a fixed time horizon T = [0,tf] with differential states y : T ?? Rny , fixed model ...... mal experimental design of a catalytic fixed bed reactor, in Proceedings of ...

  6. Thermoelectric Materials By Design: Mechanical Reliability (Agreement...

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

    enable improvements in TE device design, optimization, and maximum reliability. * Next year will involve: - Continued TE material database generation. - TE modeling and...

  7. An Estimation and Simulation Framework for Energy Efficient Design using Platform FPGAs

    E-Print Network [OSTI]

    Prasanna, Viktor K.

    An Estimation and Simulation Framework for Energy Efficient Design using Platform FPGAs Sumit modeling technique, domain specific modeling, and a methodology for energy-efficient design of application

  8. IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 32, NO. 7, JULY 2013 1045 Analytical Thermal Model for Self-Heating in

    E-Print Network [OSTI]

    2013 1045 Analytical Thermal Model for Self-Heating in Advanced FinFET Devices With Implications- mulated for the analysis of self-heating effects in FinFETs, under both steady-state and transient stress characteristics, were used to understand the nature of self-heating in FinFETs and calibrate the proposed model

  9. The Sixth International Conference on CSCW in Design. July 12-14, 2001, London, Ontario, Canada Modeling Workflow within Distributed Systems

    E-Print Network [OSTI]

    Yan, Yuhong

    Modeling Workflow within Distributed Systems Yuhong Yan, Alex Bejan* Flydragon Computer Consulting, NY, USA that modeling a workflow process in Standard Workflow Structures can guarantee the soundness of a workflow of a workflow management system is the support of the definition, execution, registration and control

  10. 1642 IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 31, NO. 11, NOVEMBER 2012 A Heterogeneous Simulation and Modeling

    E-Print Network [OSTI]

    Sen, Alper

    framework and mathematical model for SystemC in industrial automation domain. Index Terms properties (IPs), which is a common practice in the industry. Since industrial automation systems are increas, NOVEMBER 2012 A Heterogeneous Simulation and Modeling Framework for Automation Systems Dogan Fennibay

  11. EXTENSION OF EXISTING DESIGN AND SIMULATION MODELS Jeffrey D. Spitler Ph.D., P.E., Andrew D. Chiasson, Cenk Yavuzturk

    E-Print Network [OSTI]

    , pavement heating, surface water-source heat pump systems PROJECT BACKGROUND AND STATUS This project in the ground is useful, domestic hot water heaters, car washes, and pavement heating systems can be used, a refrigeration system model, and a heat pump model with domestic hot water heating capability. #12;03/10/99 2

  12. Process Flexibility Design in Unbalanced and Asymmetric Networks

    E-Print Network [OSTI]

    Deng, Tianhu

    2013-01-01T23:59:59.000Z

    4 Robust Process Flexibility Design 4.1 Basic Model3 Process Flexibility Design in Unbalanced Networks 3.12.4 Other settings where process flexibility design has been

  13. Modeling, design and thermal performance of a BIPV/T system thermally coupled with a ventilated concrete slab in a low energy solar house: Part 1, BIPV/T system and house energy concept

    SciTech Connect (OSTI)

    Chen, Yuxiang; Athienitis, A.K.; Galal, Khaled [Dept. of Building, Civil and Environmental Engineering, Concordia University, 1455 De Maisonneuve West, EV6.139, Montreal, Quebec (Canada)

    2010-11-15T23:59:59.000Z

    This paper is the first of two papers that describe the modeling, design, and performance assessment based on monitored data of a building-integrated photovoltaic-thermal (BIPV/T) system thermally coupled with a ventilated concrete slab (VCS) in a prefabricated, two-storey detached, low energy solar house. This house, with a design goal of near net-zero annual energy consumption, was constructed in 2007 in Eastman, Quebec, Canada - a cold climate area. Several novel solar technologies are integrated into the house and with passive solar design to reach this goal. An air-based open-loop BIPV/T system produces electricity and collects heat simultaneously. Building-integrated thermal mass is utilized both in passive and active forms. Distributed thermal mass in the direct gain area and relatively large south facing triple-glazed windows (about 9% of floor area) are employed to collect and store passive solar gains. An active thermal energy storage system (TES) stores part of the collected thermal energy from the BIPV/T system, thus reducing the energy consumption of the house ground source heat pump heating system. This paper focuses on the BIPV/T system and the integrated energy concept of the house. Monitored data indicate that the BIPV/T system has a typical efficiency of about 20% for thermal energy collection, and the annual space heating energy consumption of the house is about 5% of the national average. A thermal model of the BIPV/T system suitable for preliminary design and control of the airflow is developed and verified with monitored data. (author)

  14. Design of a tricycle chassis using computer-aided design and finite element analysis

    E-Print Network [OSTI]

    Avila, Elliot

    2014-01-01T23:59:59.000Z

    Finite element analysis and computer-aided design are powerful tools for modeling complex systems and their responses to external stimuli. This paper explores how these techniques were employed in a highly iterative design ...

  15. Design and history matching of a waterflood/miscible CO? flood model of a mature field: the Wellman Unit, West Texas

    E-Print Network [OSTI]

    Rojas Barile, Jose Humberto

    2002-01-01T23:59:59.000Z

    management decisions. To accomplish this task, a reservoir model was built that honors the structural configuration of the reservoir. A flexible grid system comprised of 16,767 grid blocks was built based on corner point - non orthogonal geometry. During...

  16. Modeling and Design of a Low-Voltage SOI Suspended-Gate MOSFET (SG-MOSFET) with a Metal-Over-Gate Architecture

    E-Print Network [OSTI]

    (CMI), Swiss Federal Institute of Technology Lausanne, Switzerland 3 Center of Integrated Systems constant (reported. 1 and negligible inter- modulation distortion, [2-4]. This paper reports on the physical and analytical modeling

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

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

    Washington D.C. and the D.C. Department of Housing and Community Development to build a Passive House that will require 80 percent less energy for space heating and cooling...

  18. Belgium's Ghent University Prepares their E-Cube for Solar Decathlon...

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

    workers or help from outside financial institutions. Ghent University's home meets Passive House standards with air-tight insulation, energy-efficient windows, and the...

  19. Come for Solar Decathlon, Stay for the Clean Energy XPO | Department of

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'sEnergyTexas1. FeedstockCLEANSprings Gets anColoringEnergy Come for

  20. Energy Department Selects Student Teams to Compete in 2009 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 onYouTube YouTube Note: Since the YouTube|6721 Federal RegisterHydrogen and FuelDefense asDepartmentandPaducah Site |New|