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3-dimensional wells and tunnels for finite element grids

3-dimensional wells and tunnels for finite element grids

Date: April 1, 1996
Creator: Cherry, T.A.; Gable, C.W. & Trease, H.
Description: Modeling fluid, vapor, and air injection and extraction from wells poses a number of problems. The length scale of well bores is centimeters, the region of high pressure gradient may be tens of meters and the reservoir may be tens of kilometers. Furthermore, accurate representation of the path of a deviated well can be difficult. Incorporating the physics of injection and extraction can be made easier and more accurate with automated grid generation tools that incorporate wells as part of a background mesh that represents the reservoir. GEOMESH is a modeling tool developed for automating finite element grid generation. This tool maintains the geometric integrity of the geologic framework and produces optimal (Delaunay) tetrahedral grids. GEOMESH creates a 3D well as hexagonal segments formed along the path of the well. This well structure is tetrahedralized into a Delaunay mesh and then embedded into a background mesh. The well structure can be radially or vertically refined and each well layer is assigned a material property or can take on the material properties of the surrounding stratigraphy. The resulting embedded well can then be used by unstructured finite element models for gas and fluid flow in the vicinity of wells or tunnels. ...
Contributing Partner: UNT Libraries Government Documents Department
3(omega) damage threshold evaluation of final optics components using Beamlet mule and off-line testing

3(omega) damage threshold evaluation of final optics components using Beamlet mule and off-line testing

Date: July 27, 1998
Creator: Kozlowski, M.F.; Maricle, S.; Mouser, R.; Schwartz, S.; Wegner, P. & Weiland, T.
Description: A statistics-based model is being developed to predict the laser-damage-limited lifetime of UV optical components on the NIF laser. In order to provide data for the model, laser damage experiments were performed on the Beamlet laser system at LLNL. An early prototype NIF focus lens was exposed to twenty 35 1 nm pulses at an average fluence of 5 J/cm{sup 2}, 3ns. Using a high resolution optic inspection system a total of 353 damage sites was detected within the 1160 cm{sup 2} beam aperture. Through inspections of the lens before, after and, in some cases, during the campaign, pulse to pulse damage growth rates were measured for damage initiating both on the surface and at bulk inclusions. Growth rates as high as 79 {micro}m/pulse (surface diameter) were observed for damage initiating at pre-existing scratches in the surface. For most damage sites on the optic, both surface and bulk, the damage growth rate was approximately l0{micro}m/pulse. The lens was also used in Beamlet for a subsequent 1053 {micro}m/526 {micro}m campaign. The 352 {micro}m-initiated damage continued to grow during that campaign although at generally lower growth rate.
Contributing Partner: UNT Libraries Government Documents Department
3 Questions pertaining to DARPA, Leased Space, and DISA

3 Questions pertaining to DARPA, Leased Space, and DISA

Date: August 11, 2005
Creator: United States. Dept. of Defense.
Description: Department of Defense Clearinghouse Response: DoD Clearinghouse reply to a letter from the BRAC Commission regarding 3 Questions pertaining to DARPA, Leased Space, and DISA.
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4.5 Meter high level waste canister study

4.5 Meter high level waste canister study

Date: October 1, 1997
Creator: Calmus, R.B., Westinghouse Hanford, Richland, WA
Description: The Tank Waste Remediation System (TWRS) Storage and Disposal Project has established the Immobilized High-Level Waste (IBLW) Storage Sub-Project to provide the capability to store Phase I and II BLW products generated by private vendors. A design/construction project, Project W-464, was established under the Sub-Project to provide the Phase I capability. Project W-464 will retrofit the Hanford Site Canister Storage Building (CSB) to accommodate the Phase I I-ILW products. Project W-464 conceptual design is currently being performed to interim store 3.0 m-long BLW stainless steel canisters with a 0.61 in diameter, DOE is considering using a 4.5 in canister of the same diameter to reduce permanent disposal costs. This study was performed to assess the impact of replacing the 3.0 in canister with the 4.5 in canister. The summary cost and schedule impacts are described.
Contributing Partner: UNT Libraries Government Documents Department
04/28/05 Cobra Data: JSF Recommendation

04/28/05 Cobra Data: JSF Recommendation

Date: September 1, 2005
Creator: United States. Dept. of Defense.
Description: 103-06A-NMC19 - DoD Input - Navy/MC - Naval Air Station Pensacola - Florida - BRAC Commission - FY 2005.
Contributing Partner: UNT Libraries Government Documents Department
04/28/2005 COBRA Report: JSF Initial Test Site

04/28/2005 COBRA Report: JSF Initial Test Site

Date: September 1, 2005
Creator: United States. Dept. of Defense.
Description: DoD Input - 103-06 - General - Joint Strike Fighter Data - Cobra Report - BRAC Commission - FY 2005.
Contributing Partner: UNT Libraries Government Documents Department
4-inch sample recovery canisters, Test Model D series. Final report, September 1969--May 1970

4-inch sample recovery canisters, Test Model D series. Final report, September 1969--May 1970

Date: December 31, 1970
Creator: Goode, P.L. & Neff, G.W.
Description: Six tests were conducted on 4-Inch Test Model D Closures to develop an improved closure for the redesigned Sandia Recovery Canister (SRC). The first three closures tested used variations of the high explosive (HE) design used on the previous Model B (Second) Series (P64283). The last three units tested used variations of the HE design used in the Midi Mist Event SRC.
Contributing Partner: UNT Libraries Government Documents Department
4. International reservoir characterization technical conference

4. International reservoir characterization technical conference

Date: April 1, 1997
Creator: unknown
Description: This volume contains the Proceedings of the Fourth International Reservoir Characterization Technical Conference held March 2-4, 1997 in Houston, Texas. The theme for the conference was Advances in Reservoir Characterization for Effective Reservoir Management. On March 2, 1997, the DOE Class Workshop kicked off with tutorials by Dr. Steve Begg (BP Exploration) and Dr. Ganesh Thakur (Chevron). Tutorial presentations are not included in these Proceedings but may be available from the authors. The conference consisted of the following topics: data acquisition; reservoir modeling; scaling reservoir properties; and managing uncertainty. Selected papers have been processed separately for inclusion in the Energy Science and Technology database.
Contributing Partner: UNT Libraries Government Documents Department
4 MW upgrade to DIII-D FWCD system: System commissioning and initial operation

4 MW upgrade to DIII-D FWCD system: System commissioning and initial operation

Date: October 1, 1995
Creator: Cary, W.P.; Callis, R.W.; Grassie, J.S. de; Harris, T.E.; O`Neill, R.C.; Pinsker, R.I. et al.
Description: The initial installation of the 4 MW fast wave current drive (FWCD) upgrade started in 1992 with the purchase of two ABB/Thomcast AG rf power amplifiers. These amplifiers cover the frequency range 30 MHz to 120 MHz. A maximum output power of over 2 MW between 30 MHz and 80 MHz and 1 MW at 120 MHz were the specification requirements. The system as installed is comprised of the two mentioned rf amplifiers, coaxial transmission and matching components, rf phase and amplitude monitoring, and a SUN SparcStation 10 control system. Due to various reasons almost every major component in the system required redesign and engineering in order to meet the system requirements. The failures, probable cause and the final redesigns will be discussed as well as some thoughts on how better to specify system requirements for future systems.
Contributing Partner: UNT Libraries Government Documents Department
5. annual clean coal technology conference: powering the next millennium. Volume 2

5. annual clean coal technology conference: powering the next millennium. Volume 2

Date: June 1, 1997
Creator: unknown
Description: The Fifth Annual Clean Coal Technology Conference focuses on presenting strategies and approaches that will enable clean coal technologies to resolve the competing, interrelated demands for power, economic viability, and environmental constraints associated with the use of coal in the post-2000 era. The program addresses the dynamic changes that will result from utility competition and industry restructuring, and to the evolution of markets abroad. Current projections for electricity highlight the preferential role that electric power will have in accomplishing the long-range goals of most nations. Increase demands can be met by utilizing coal in technologies that achieve environmental goals while keeping the cost- per-unit of energy competitive. Results from projects in the DOE Clean Coal Technology Demonstration Program confirm that technology is the pathway to achieving these goals. The industry/government partnership, cemented over the past 10 years, is focused on moving the clean coal technologies into the domestic and international marketplaces. The Fifth Annual Clean Coal Technology Conference provides a forum to discuss these benchmark issues and the essential role and need for these technologies in the post-2000 era. This volume contains technical papers on: advanced coal process systems; advanced industrial systems; advanced cleanup systems; and advanced power generation systems. ...
Contributing Partner: UNT Libraries Government Documents Department