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1,579 Matching Results
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8:1 thermal cavity problem
We present results for the 8:1 thermal cavity problem using FIDAP on 3 meshes--each using 3 elements. A brief summary of related results is also included. This contribution comes via the rather versatile and general commercial finite element code, FIDAP. This code still offers the user a wide selection with respect to element choices, statement of governing equations, (e.g., advective form, divergence form) implicit time integrators (variable-step or fixed step, first-order or second-order), and solution techniques for both the nonlinear and linear sets of equations. We have tested quite a number of these variations on this problem; here we report on an interesting subset and will present the remainder at the conference.
Date:
October 11, 2000
Creator:
Gresho, P M & Sutton, S
Object Type:
Article
System:
The UNT Digital Library
100-D Area In Situ Redox Treatability Test for Chromate-Contaminated Groundwater
A treatability test was conducted for the In Situ Redox Manipulation (ISRM) technology at the 100 D Area of the U. S. Department of Energy's Hanford Site. The target contaminant was dissolved chromate in groundwater. The ISRM technology creates a permeable subsurface treatment zone to reduce mobile chromate in groundwater to an insoluble form. The ISRM permeable treatment zone is created by reducing ferric iron to ferrous iron within the aquifer sediments, which is accomplished by injecting aqueous sodium dithionite into the aquifer and then withdrawing the reaction products. The goal of the treatability test was to create a linear ISRM barrier by injecting sodium dithionite into five wells. Well installation and site characterization activities began in spring 1997; the first dithionite injection took place in September 1997. The results of this first injection were monitored through the spring of 1998. The remaining four dithionite injections were carried out in May through July of 1998.These five injections created a reduced zone in the Hanford unconfined aquifer approximately 150 feet in length (perpendicular to groundwater flow) and 50 feet wide. The reduced zone extended over the thickness of the unconfined zone. Analysis of post-emplacement groundwater samples showed concentrations of chromate, in …
Date:
October 12, 2000
Creator:
Williams, Mark D.; Vermeul, Vincent R.; Szecsody, James E. & Fruchter, Jonathan S.
Object Type:
Report
System:
The UNT Digital Library
100-D Area In Situ Redox Treatability Test for Chromate-Contaminated Groundwater
None
Date:
October 12, 2000
Creator:
Williams, M. D.; Vermeul, V. R.; Szecsody, J. E. & Fruchter, J. S.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 30, No. 5, Ed. 1 Friday, October 6, 2000
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 6, 2000
Creator:
Pace, Joshua
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 30, No. 6, Ed. 1 Friday, October 20, 2000
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 20, 2000
Creator:
Pace, Joshua
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 30, No. 7, Ed. 1 Friday, October 27, 2000
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 27, 2000
Creator:
Pace, Joshua
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
1999 Annual Cathodic Protection Survey Report for PFP
This cathodic protection (CP) report documents the results of the 1999 annual CP survey of the underground piping within PFP property. An annual survey of CP systems is required by Washington Administrative Code (WAC). A spreadsheet to document the 1999 annual survey polarization data is included in this report. Graphs are included to trend the cathodic voltages and the polarization voltages at each test station on PFP property. The trending spans from 1994 to 1999. Graphs are also included to trend voltage and amperage outputs of each rectifier during the annual surveys. During the annual survey, resistance testing between the underground piping was conducted at each test station. The testing showed that all piping (with test leads into the test stations) was continuous with every pipe represented in the test stations. The resistance data is not documented in this report but can be accessed in work package 22-99-01003. During the annual survey, the wiring configurations of anode junction boxes AJB(R45-1) and AJB(45-1) were documented. The sketches can be accessed from the JCS work record of work package 22-99-01003. Analysis, conclusions, and recommendations of the 1999 annual CP survey results are included in this report.
Date:
October 3, 2000
Creator:
BOWMAN, T.J.
Object Type:
Report
System:
The UNT Digital Library
1Q/2Q00 M-Area and Metallurgical Laboratory Hazardous Waste Management Facilities Groundwater Monitoring and Corrective-Action Report - First and Second Quarters 2000 - Volumes I, II, and II
This report describes the groundwater monitoring and corrective-action program at the M-Area Hazardous Waste Management Facility (HWMF) and the Metallurgical Laboratory (Met Lab) HWMF at the Savannah River site (SRS) during first and second quarters of 2000.
Date:
October 24, 2000
Creator:
Chase, J.
Object Type:
Report
System:
The UNT Digital Library
2000 Census: Headquarters Processing System Status and Risks
A letter report issued by the General Accounting Office with an abstract that begins "The accuracy of the 2000 decennial census depends in part on the proper functioning of 10 interrelated information systems, one of which is the Census Bureau's headquarters (HQ) processing system. The HQ processing system consists of 48 applications, all developed internally by the Bureau, that support various census operations, such as updating address files, creating a file of census responses, and preparing data for tabulation and dissemination. GAO found that the Bureau lacks effective, mature software and system development processes to control development of its HQ processing system applications."
Date:
October 17, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
3D HYDRA Simulations of NIF Targets
The performance of NIF target designs is simulated in three dimensions using the HYDRA multiphysics radiation hydrodynamics code. In simulations of a cylindrical NIF hohlraum that include an imploding capsule, the motion of the wall material inside the hohlraum shows a high degree of axisymmetry. Laser radiation is able to propagate through the entrance hole for the required duration of the pulse. Gross hohlraum energetics in the simulation mirror the results from an axisymmetric simulation. A simulation of a copper-doped beryllium ablator NIF capsule carried out over large solid angle resolved the full spectrum of the most dangerous modes that grow from surface roughness. Hydrodynamic instabilities evolve into the weakly nonlinear regime. There is no evidence of low mode jetting driven by nonlinear mode coupling.
Date:
October 20, 2000
Creator:
Marinak, M. M.; Kerbel, G. D.; Gentile, N. A.; Jones, O.; Pollaine, S.; Dittrich, T. R. et al.
Object Type:
Article
System:
The UNT Digital Library
3D HYDRA simulations of NIF targets
The performance of NIF target designs is simulated in three dimensions using the HYDRA multiphysics radiation hydrodynamics code. In simulations of a cylindrical NIF hohlraum that include an imploding capsule, all relevant hohlraum features and the detailed laser illumination pattern, the motion of the wall material inside the hohlraum shows a high degree of axisymmetry. Laser light is able to propagate through the entrance hole for the required duration of the pulse. Gross hohlraum energetics mirror the results from an axisymmetric simulation. A NIF capsule simulation resolved the full spectrum of the most dangerous modes that grow from surface roughness. Hydrodynamic instabilities evolve into the weakly nonlinear regime. There is no evidence of anomalous low mode growth driven by nonlinear mode coupling.
Date:
October 30, 2000
Creator:
Marinak, M. M.; Kerbel, G. D.; Gentile, N. A.; Jones, O.; Munro, D.; Pollaine, S. et al.
Object Type:
Article
System:
The UNT Digital Library
7th ICFA mini-workshop on high intensity high brightness hadron beams
None
Date:
October 10, 2000
Creator:
Mokhov, Nikolai V. & Chou, Weiren
Object Type:
Article
System:
The UNT Digital Library
8th International Conference on Electronic Spectroscopy and Structure
Gathering from 33 countries around the world, 408 registrants and a number of local drop-in participants descended on the Clark Kerr Campus of the University of California, Berkeley, from Monday, August 7 through Saturday, August 12, 2000 for the Eighth International Conference on Electronic Structure and Spectroscopy (ICESS8). At the conference, participants benefited from an extensive scientific program comprising more than 100 oral presentations (plenary lectures and invited and contributed talks) and 330 poster presentations, as well as ample time for socializing and a tour of the Advanced Light Source (ALS) at the nearby Lawrence Berkeley National Laboratory.
Date:
October 16, 2000
Creator:
Robinson, Art
Object Type:
Article
System:
The UNT Digital Library
Ablative Stabilization of the Deceleration-Phase Rayleigh-Taylor Instability, control No. 2000-107
The growth rates of the deceleration-phase Rayleigh-Taylor instability for imploding inertial confinement fusion capsules are calculated and compared with the results of numerical simulations. It is found that the unstable spectrum and the growth rates are significantly reduced by the finite ablation flow at the shell's inner surface. For typical direct-drive capsules designed for the National Ignition Facility, the unstable spectrum exhibits a cutoff for {ell} {approx} 90.
Date:
October 1, 2000
Creator:
Lobatchev, V. & Betti, R.
Object Type:
Report
System:
The UNT Digital Library
Absorptance Measurements of Optical Coatings - A Round Robin
An international round robin study was conducted on the absorption measurement of laser-quality coatings. Sets of optically coated samples were made by a ''reactive DC magnetron'' sputtering and an ion beam sputtering deposition process. The sample set included a high reflector at 514 nm and a high reflector for the near infrared (1030 to 1318 nm), single layers of silicon dioxide, tantalum pentoxide, and hafnium dioxide. For calibration purposes, a sample metalized with hafnium and an uncoated, superpolished fused silica substrate were also included. The set was sent to laboratory groups for absorptance measurement of these coatings. Whenever possible, each group was to measure a common, central area and another area specifically assigned to the respective group. Specific test protocols were also suggested in regards to the laser exposure time, power density, and surface preparation.
Date:
October 26, 2000
Creator:
Chow, R; Taylor, J R; Wu, Z L; Boccara, C A; Broulik, U; Commandre, M et al.
Object Type:
Article
System:
The UNT Digital Library
Abstraction of Seepage into Drifts
The abstraction model used for seepage into emplacement drifts in recent TSPA simulations has been presented. This model contributes to the calculation of the quantity of water that might contact waste if it is emplaced at Yucca Mountain. Other important components of that calculation not discussed here include models for climate, infiltration, unsaturated-zone flow, and thermohydrology; drip-shield and waste-package degradation; and flow around and through the drip shield and waste package. The seepage abstraction model is stochastic because predictions of seepage are necessarily quite uncertain. The model provides uncertainty distributions for seepage fraction fraction of waste-package locations flow rate as functions of percolation flux. In addition, effects of intermediate-scale flow with seepage and seep channeling are included by means of a flow-focusing factor, which is also represented by an uncertainty distribution.
Date:
October 16, 2000
Creator:
Wilson, Michael L. & Ho, Clifford K.
Object Type:
Article
System:
The UNT Digital Library
Abstraction of Thermal Hydrology and Coupled Processes for TSPA
The thermal-hydrologic (TH) and coupled process models describe the evolution of a potential geologic repository as heat is released from emplaced waste. The evolution (thermal, hydrologic, chemical, and mechanical) of the engineered barrier and geologic systems is heavily dependent on the heat released by the waste packages and how the heat is transferred from the emplaced wastes through the drifts and through the repository host rock. The essential elements of this process are extracted (or abstracted) from the process-level models that incorporate the basic energy and mass conservation principles and applied to the total system models used to describe the overall performance of the potential repository. The process of total system performance assessment (TSPA) abstraction is the following. First is a description of the parameter inputs used in the process-level models. A brief description is given hereof past inputs for the viability assessment (e.g., for TSPA-VA) and current inputs for the site recommendation (TSPA-SR). This is followed by a highlight of the process-level models from which the abstractions are made. These include descriptions of TH, thermal-hydrologic-chemical (THC), and thermal-mechanical (TM) processes used to describe the performance of individual waste packages and waste emplacement drifts as well as the repository as …
Date:
October 20, 2000
Creator:
ITAMURA,MICHAEL T. & FRANCIS JR.,NICHOLAS D.
Object Type:
Article
System:
The UNT Digital Library
Accelerated Aging of Polyimide/Titanium Adhesive Bonds Using the Notched Coating Adhesion Test
None
Date:
October 2, 2000
Creator:
Giunta, R. K. & Kander, R. G.
Object Type:
Article
System:
The UNT Digital Library
Acceleration and Compression of Charged Particle Bunches Using Counter-Propagating Laser Beams
The nonlinear interaction between counter-propagating laser beams in a plasma results in the generation of large (enhanced) plasma wakes. The two beams need to be slightly detuned in frequency, and one of them has to be ultra-short (shorter than a plasma period). Thus produced wakes have a phase velocity close to the speed of light and can be used for acceleration and compression of charged bunches. The physical mechanism responsible for the enhanced wake generation is qualitatively described and compared with the conventional laser wakefield mechanism. The authors also demonstrate that, depending on the sign of the frequency difference between the lasers, the enhanced wake can be used as a ``snow-plow'' to accelerate and compress either positively or negatively charged bunches. This ability can be utilized in an electron-positron injector.
Date:
October 17, 2000
Creator:
Shvets, G.; Fisch, N. J. & Pukhov, A.
Object Type:
Report
System:
The UNT Digital Library
Acceptance Test Plan for ANSYS Software
This plan governs the acceptance testing of the ANSYS software (Full Mechanical Release 5.5) for use on Project Word Management Contract (PHMC) computer systems (either UNIX or Microsoft Windows/NT). There are two phases to the acceptance testing covered by this test plan: program execution in accordance with the guidance provided in installation manuals; and ensuring results of the execution are consistent with the expected physical behavior of the system being modeled.
Date:
October 25, 2000
Creator:
Crea, B. A.
Object Type:
Report
System:
The UNT Digital Library
Acceptance Test Plan for Fourth-Generation Corrosion Monitoring Cabinet
This Acceptance Test Plan (ATP) will document the satisfactory operation of the third-generation corrosion monitoring cabinet (Hiline Engineering Part No.0004-CHM-072-C01). This ATP will be performed by the manufacturer of the cabinet prior to delivery to the site. The objective of this procedure is to demonstrate and document the acceptance of the corrosion monitoring cabinet. The test will consist of a continuity test of the cabinet wiring from the end of cable to be connected to corrosion probe, through the appropriate intrinsic safety barriers and out to the 15 pin D-shell connectors to be connected to the corrosion monitoring instrument. Additional testing will be performed using a constant current and voltage source provided by the corrosion monitoring hardware manufacturer to verify proper operation of corrosion monitoring instrumentation.
Date:
October 23, 2000
Creator:
Norman, E. C.
Object Type:
Report
System:
The UNT Digital Library
Acceptance Test Plan for Fourth-Generation Hanford Corrosion Probe Tree Assembly
This Acceptance Test Procedure (ATP) will document the satisfactory operation of the corrosion probe tree assembly. This ATP will be performed by the manufacturer prior to delivery to the site. The objective of this procedure is to demonstrate and document the acceptance of the corrosion probe tree assembly. The test will consist of a pressure test to verify leak tightness of the probe tree body, a continuity test of the probe tree wiring, a test of the high level detector wiring, and a test of the operation of the Type K thermocouples.
Date:
October 17, 2000
Creator:
NORMAN, E.C.
Object Type:
Report
System:
The UNT Digital Library
Acceptance Test Report for Fourth-Generation Hanford Corrosion Monitoring Cabinet
This Acceptance Test Plan (ATP) will document the satisfactory operation of the third-generation corrosion monitoring cabinet (Hiline Engineering Part No.0004-CHM-072-C01). This ATP will be performed by the manufacturer of the cabinet prior to delivery to the site. The objective of this procedure is to demonstrate and document the acceptance of the corrosion monitoring cabinet. The test will consist of a continuity test of the cabinet wiring from the end of cable to be connected to corrosion probe, through the appropriate intrinsic safety barriers and out to the 15 pin D-shell connectors to be connected to the corrosion monitoring instrument. Additional testing will be performed using a constant current and voltage source provided by the corrosion monitoring hardware manufacturer to verify proper operation of corrosion monitoring instrumentation.
Date:
October 23, 2000
Creator:
NORMAN, E.C.
Object Type:
Report
System:
The UNT Digital Library
Acceptance Test Report for Fourth Generation Hanford Corrosion Monitoring System
This Acceptance Test Report (ATR) will document the satisfactory operation of the corrosion probe cabinets destined for installation on tanks 241-AN-102 and 241-AN-107. This ATR will be performed by the manufacturer on each cabinet prior to delivery to the site. The objective of this procedure is to demonstrate and document the acceptance of the corrosion monitoring cabinets to be installed on tanks 241-AN-102 and 241-AN-107. One cabinet will be installed on each tank. Each cabinet will contain corrosion monitoring hardware to be connected to existing corrosion probes already installed in each tank. The test will consist of a continuity test of the cabinet wiring from the end of cable to be connected to corrosion probe, through the appropriate intrinsic safety barriers and out to the 15 pin D-shell connectors to be connected to the corrosion monitoring instrument. Additional testing will be performed using a constant current and voltage source provided by the corrosion monitoring hardware manufacturer to verify proper operation of corrosion monitoring instrumentation (input a known signal and see if the instrumentation records the proper value).
Date:
October 23, 2000
Creator:
NORMAN, E.C.
Object Type:
Report
System:
The UNT Digital Library