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Application of the INSTANT-HPS PN Transport Code to the C5G7 Benchmark Problem
INSTANT is the INL's next generation neutron transport solver to support high-fidelity multi-physics reactor simulation INSTANT is in continuous development to extend its capability Code is designed to take full advantage of middle to large cluster (10-1000 processors) Code is designed to focus on method adaptation while also mesh adaptation will be possible. It utilizes the most modern computing techniques to generate a neutronics tool of full-core transport calculations for reactor analysis and design. It can perform calculations on unstructured 2D/3D triangular, hexagonal and Cartesian geometries. Calculations can be easily extended to more geometries because of the independent mesh framework coded with the model Fortran. This code has a multigroup solver with thermal rebalance and Chebyshev acceleration. It employs second-order PN and Hybrid Finite Element method (PNHFEM) discretization scheme. Three different in-group solvers - preconditioned Conjugate Gradient (CG) method, preconditioned Generalized Minimal Residual Method (GMRES) and Red-Black iteration - have been implemented and parallelized with the spatial domain decomposition in the code. The input is managed with extensible markup language (XML) format. 3D variables including the flux distributions are outputted into VTK files, which can be visualized by tools such as VisIt and ParaView. An extension of the code named …
Date:
June 1, 2011
Creator:
Wang, Y.; Zhang, H.; Szilard, R. H. & Martineau, R. C.
Object Type:
Article
System:
The UNT Digital Library
Archival Investigations for Potential Colonial-Era Shipwrecks in Ultra-Deepwater within the Gulf of Mexico
A report on the primary archival material relative to early vessel losses in Ultra-Deepwater within the Gulf of Mexico.
Date:
June 2011
Creator:
Krivor, Michael C.; de Bry, John; Linville, Nicholas J. & Wells, Debra J.
Object Type:
Text
System:
The UNT Digital Library
Assessing and Reducing Plug and Process Loads in Office Buildings (Brochure)
Plug and process loads (PPLs) in commercial buildings account for almost 5% of U.S. primary energy consumption. Minimizing these loads is a primary challenge in the design and operation of an energy-efficient building. PPLs are not related to general lighting, heating, ventilation, cooling, and water heating, and typically do not provide comfort to the occupants. They use an increasingly large fraction of the building energy use pie because the number and variety of electrical devices have increased along with building system efficiency. Reducing PPLs is difficult because energy efficiency opportunities and the equipment needed to address PPL energy use in office spaces are poorly understood.
Date:
June 1, 2011
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Assessing and Reducing Plug and Process Loads in Retail Buildings (Brochure)
Plug and process loads (PPLs) in commercial buildings account for almost 5% of U.S. primary energy consumption. Minimizing these loads is a primary challenge in the design and operation of an energy-efficient building. PPLs are not related to general lighting, heating, ventilation, cooling, and water heating, and typically do not provide comfort to the occupants. They use an increasingly large fraction of the building energy use pie because the number and variety of electrical devices have increased along with building system efficiency. Reducing PPLs is difficult because energy efficiency opportunities and the equipment needed to address PPL energy use in retail spaces are poorly understood.
Date:
June 1, 2011
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Assessing the Value of Delay to Truckers and Carriers
This project evaluates the value of delay (VOD) to commercial vehicle operators due to highway congestion. The VOD for congestion is a fundamental parameter driving the private sectors' response to public freight projects and policies such as corridor construction and tolling.
Date:
June 2011
Creator:
Miao, Qing; Wang, Bruce X. & Adams, Teresa M.
Object Type:
Report
System:
The Portal to Texas History
Assessment of existing Sierra/Fuego capabilities related to grid-to-rod-fretting (GTRF).
The following report presents an assessment of existing capabilities in Sierra/Fuego applied to modeling several aspects of grid-to-rod-fretting (GTRF) including: fluid dynamics, heat transfer, and fluid-structure interaction. We compare the results of a number of Fuego simulations with relevant sources in the literature to evaluate the accuracy, efficiency, and robustness of using Fuego to model the aforementioned aspects. Comparisons between flow domains that include the full fuel rod length vs. a subsection of the domain near the spacer show that tremendous efficiency gains can be obtained by truncating the domain without loss of accuracy. Thermal analysis reveals the extent to which heat transfer from the fuel rods to the coolant is improved by the swirling flow created by the mixing vanes. Lastly, coupled fluid-structure interaction analysis shows that the vibrational modes of the fuel rods filter out high frequency turbulent pressure fluctuations. In general, these results allude to interesting phenomena for which further investigation could be quite fruitful.
Date:
June 1, 2011
Creator:
Turner, Daniel Zack & Rodriguez, Salvador B.
Object Type:
Report
System:
The UNT Digital Library
Assessment of Tools and Data for System-Level Dynamic Analyses
The only fuel cycle for which dynamic analyses and assessments are not needed is the null fuel cycle - no nuclear power. For every other concept, dynamic analyses are needed and can influence relative desirability of options. Dynamic analyses show how a fuel cycle might work during transitions from today's partial fuel cycle to something more complete, impact of technology deployments, location of choke points, the key time lags, when benefits can manifest, and how well parts of fuel cycles work together. This report summarizes the readiness of existing Fuel Cycle Technology (FCT) tools and data for conducting dynamic analyses on the range of options. VISION is the primary dynamic analysis tool. Not only does it model mass flows, as do other dynamic system analysis models, but it allows users to explore various potential constraints. The only fuel cycle for which constraints are not important are those in concept advocates PowerPoint presentations; in contrast, comparative analyses of fuel cycles must address what constraints exist and how they could impact performance. The most immediate tool need is extending VISION to the thorium/U233 fuel cycle. Depending on further clarification of waste management strategies in general and for specific fuel cycle candidates, waste …
Date:
June 1, 2011
Creator:
Piet, Steven J. & Soelberg, Nick R.
Object Type:
Report
System:
The UNT Digital Library
Baker-Barry Tunnel Lighting: Evaluation of a Potential GATEWAY Demonstrations Project
The U.S. Department of Energy (DOE) is evaluating the Baker-Barry Tunnel as a potential GATEWAY Demonstrations project for deployment of solid-state lighting (SSL) technology. The National Park Service (NPS) views this project as a possible proving ground and template for implementation of light-emitting diode (LED) luminaires in other NPS tunnels, thereby expanding the estimated 40% energy savings from 132 MWh/yr for this tunnel to a much larger figure national
Date:
June 1, 2011
Creator:
Tuenge, Jason R.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 91, No. 106, Ed. 1 Wednesday, June 1, 2011
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
June 1, 2011
Creator:
Gray, Janie
Object Type:
Newspaper
System:
The Portal to Texas History
Benefits and Costs of Improved IEQ in U.S. Offices
This paper estimates some of the benefits and costs of implementing scenarios that improve indoor environmental quality (IEQ) in the stock of U.S. office buildings. The scenarios include increasing ventilation rates when they are below 10 or 15 L/s per person, adding outdoor-air economizers and controls when absent, eliminating winter indoor temperatures greater than 23 oC, and reducing dampness and mold problems. The estimated benefits of the scenarios analyzed are substantial in magnitude, including increased work performance, reduced sick building syndrome symptoms, reduced absence, and improved thermal comfort for millions of office workers. The combined potential annual economic benefit of a set ofnon-overlapping scenarios is approximately $20 billion. While the quantitative estimates have a high uncertainty, the opportunity for substantial benefits is clear. Some IEQ improvement measures will save energy while improving health or productivity, and implementing these measures should be the highest priority.
Date:
June 1, 2011
Creator:
Fisk, William J.; Black, Douglas & Brunner, Gregory
Object Type:
Article
System:
The UNT Digital Library
Best practices for system dynamics model design and construction with powersim studio.
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.
Date:
June 1, 2011
Creator:
Malczynski, Leonard A.
Object Type:
Report
System:
The UNT Digital Library
Big Time Texas Hunts
Pamphlet on different Texas wildlife hunts offered through drawing contests, including a description of each award package, wildlife being hunted, and how to enter are included.
Date:
June 2011
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Pamphlet
System:
The Portal to Texas History
Birds of Davis Mountains State Park and Vicinity : A Field Checklist
This document provides information about the "geographic features of the Davis Mountains State Park that is located within Jeff Davis County and the habitat located in the vicinity. The booklet also provides a checklist of all known species to occur within Jeff Davis County." (p. 4).
Date:
June 2011
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Book
System:
The Portal to Texas History
Blair's (June 2011)
Photograph of Jimmy, Marsha, and T.J. Blair in bunker gear, standing in front of Slaughterville FD E-2. June, 2011.
Date:
June 2011
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Brief History of Ahavath Sholom Ladies Cemetery Society]
Short text describing the discovery of records for the Ahavath Sholom Ladies Cemetery Society with a brief history of the group, their work, and connection to similar organizations.
Date:
June 2011
Creator:
Weiner, Hollace
Object Type:
Text
System:
The Portal to Texas History
Buescher State Park Hiking Trails
This is a topographical map of the hiking trails at Buescher State Park located near the town of Smithville in Bastrop County, Texas. The trails on the map are color coded and assisted by a "Trail Information" box on the right side of the map. In the lower left of the map is information on trail rules and safety.
Date:
June 2011
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Map
System:
The Portal to Texas History
Buescher State Park Hiking Trails
Map of the Buescher State Park Hiking Trails outlining trail routes, lengths, and rules.
Date:
June 2011
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Map
System:
The Portal to Texas History
Building Barriers to...Traffic Noise
This document contains TxDOT's research on noise pollution, including its impacts on the environment as well as transportation projects.
Date:
June 2011
Creator:
Texas. Department of Transportation. Environmental Affairs Division
Object Type:
Pamphlet
System:
The Portal to Texas History
Business Case for Energy Efficiency in Support of Climate Change Mitigation, Economic and Societal Benefits in the United States
This study seeks to provide policymakers and other stakeholders with actionable information towards a road map for reducing energy consumption in the most cost-effective way. A major difference between the current study and some others is that we focus on individual equipment types that might be the subject of policies - such as labels, energy performance standards, and incentives - to affect market transformation in the short term, and on high-efficiency technology options that are available today. The approach of the study is to assess the impact of short-term actions on long-term impacts. “Short term” market transformation is assumed to occur by 2015, while “long-term” energy demand reduction impacts are assessed in 2030. In the intervening years, most but not all of the equipment studied will turn over completely. The 15-year time frame is significant for many products however, indicating that delay of implementation postpones impacts such as net economic savings and mitigation of emissions of carbon dioxide. Such delays would result in putting in place energy-wasting technologies, postponing improvement until the end of their service life, or potentially resulting in expensive investment either in additional energy supplies or in early replacement to achieve future energy or emissions reduction targets.
Date:
June 1, 2011
Creator:
Bojda, Nicholas; Ke, Jing; de la Rue du Can, Stephane; E. Letschert, Virginie; E. McMahon, James & McNeil, Michael A.
Object Type:
Report
System:
The UNT Digital Library
Capacity Value of Concentrating Solar Power Plants
This study estimates the capacity value of a concentrating solar power (CSP) plant at a variety of locations within the western United States. This is done by optimizing the operation of the CSP plant and by using the effective load carrying capability (ELCC) metric, which is a standard reliability-based capacity value estimation technique. Although the ELCC metric is the most accurate estimation technique, we show that a simpler capacity-factor-based approximation method can closely estimate the ELCC value. Without storage, the capacity value of CSP plants varies widely depending on the year and solar multiple. The average capacity value of plants evaluated ranged from 45%?90% with a solar multiple range of 1.0-1.5. When introducing thermal energy storage (TES), the capacity value of the CSP plant is more difficult to estimate since one must account for energy in storage. We apply a capacity-factor-based technique under two different market settings: an energy-only market and an energy and capacity market. Our results show that adding TES to a CSP plant can increase its capacity value significantly at all of the locations. Adding a single hour of TES significantly increases the capacity value above the no-TES case, and with four hours of storage or more, …
Date:
June 1, 2011
Creator:
Madaeni, S. H.; Sioshansi, R. & Denholm, P.
Object Type:
Report
System:
The UNT Digital Library
CAPCOG Connections, June/July 2011
Newsletter of the Capital Area Council of Governments containing articles and news about the civic institutions in the ten-county Capital Area. The articles included are "Elected Officials Urged to Attend June 3rd Forum For HUD Sustainable Communities Project," "Census Provides Less Information," "Texas Silver Haired Legislators Announced," "Debate Over Region's Impact on Air Quality Complicated as CAPCOG's Program Faces 50% Cut in Funding," "Honoring Seventeen Years of Service," "Emergency Call Tracking System Installed," "Law Enforcement Academy Continues 100% Pass Rate," and "Homeland Security Funded Assets Assist First Responders with Oak Hill Fire."
Date:
June 2011
Creator:
Capital Area Council of Governments (Austin, Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Catalog of Howard Payne University, 2011-2012
Catalog describes the history, governance, admission requirements, course offerings, and campus life of Howard Payne University in Brownwood, Texas.
Date:
June 2011
Creator:
Howard Payne University
Object Type:
Book
System:
The Portal to Texas History
Cherokeean Herald (Rusk, Tex.), Vol. 162, No. 14, Ed. 1 Wednesday, June 1, 2011
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
June 1, 2011
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
Chile: Political and Economic Conditions and U.S. Relations
This report provides a brief historical background of Chile, examines recent political and economic developments, and considers current issues in U.S.-Chilean relations.
Date:
June 1, 2011
Creator:
Meyer, Peter J.
Object Type:
Report
System:
The UNT Digital Library