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Porting Inition and Failure to Linked Cheetah

Description: Linked CHEETAH is a thermo-chemical code coupled to a 2-D hydrocode. Initially, a quadratic-pressure dependent kinetic rate was used, which worked well in modeling prompt detonation of explosives of large size, but does not work on other aspects of explosive behavior. The variable-pressure Tarantula reactive flow rate model was developed with JWL++ in order to also describe failure and initiation, and we have moved this model into Linked CHEETAH. The model works by turning on only above a press… more
Date: July 18, 2007
Creator: Vitello, P & Souers, P C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tritium-containment systems: a tradeoff study

Description: Various design parameters are evaluated that affect the performance of tritium-containment systems for fusion reactors. Our study included a review of such parameters as tritium forms, impurities, catalysts, adsorbents, getters, and as low as reasonably achievable principles. We organized these schemes, which can be considered for treating either air or inert atmospheres, so one could easily make orderly choices and tradeoffs for optimum performance. The relationships examined involved purifica… more
Date: December 18, 1978
Creator: Folkers, C.L. & Cena, R.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Leaching characteristics of actinides from simulated reactor waste glass

Description: Two methods for measuring the leach rates of simulated high level waste glass are compared. One is a modification of the standard IAEA method and the other is a one-pass method in which fresh leachant solution is pumped over the sample at a controlled flow rate and temperature. For times up to 3 days, there is close agreement between results from the two methods at 25.0/sup 0/C. Leach rates from the one-pass method show a correlation with flow rate only on day 1 at 25.0/sup 0/C, whereas they sh… more
Date: January 18, 1979
Creator: Weed, H. C.; Coles, D. G.; Bradley, D. J.; Mensing, R. W. & Schweiger, J. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Effluent system capacity Project CGI-883 increased process water flow -- 100-K

Description: The process water flow rates at the 100-K Reactors will be increased as a result of plant modifications under Project CGI-883. The flow rates to be achieved by the project are 188,000 and 200,000 gpm under five and six 190 Building pump operation respectively. Preliminary studies have indicated that the K-Area effluent systems will, for the most part, be adequate for the expanded conditions provided the reactor effluent is continuously and simultaneously discharged from two retention basis to t… more
Date: November 18, 1960
Creator: Schack, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Numerical results of production test IP-326-I, Low-flow calibration tests at B, D, F, and H Reactors

Description: Recent reviews of the last-ditch water backup system at the old reactors had shown that complete adequacy could not be demonstrated at all of the reactors under all conditions. However, these conclusions were based in part on conservative calculations using basic data with a sizeable amount of possible error. Subsequently, recommendations were made to run several tests which would increase the accuracy of the basic data and thereby allow an increase in the demonstratable level of last-ditch vat… more
Date: October 18, 1960
Creator: Benson, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Landstreamer/Gimbaled Geophone Acquisition of High Resolution Seismic Reflection Data North of the 200 Areas Hanford Site

Description: Landstreamer Seismic Reflection Vender Report by Confederated Tribes of the Umatilla Indian Reservation and Montana Tech of the University of Montana, collected in FY2009 under CHPRC Contract 35789.
Date: November 18, 2009
Creator: Repasky, T. E.; Hyde, E. R.; Link, C. A. & Speece, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Control System Options and Strategies for Supercritical CO2 Cycles.

Description: The Supercritical Carbon Dioxide (S-CO{sub 2}) Brayton Cycle is a promising alternative to Rankine steam cycle and recuperated gas Brayton cycle energy converters for use with Sodium-Cooled Fast Reactors (SFRs), Lead-Cooled Fast Reactors (LFRs), as well as other advanced reactor concepts. The S-CO{sub 2} Brayton Cycle offers higher plant efficiencies than Rankine or recuperated gas Brayton cycles operating at the same liquid metal reactor core outlet temperatures as well as reduced costs or siz… more
Date: June 18, 2009
Creator: Moisseytsev, A.; Kulesza, K. P. & Sienicki, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cesium Concentration in MCU Solvent

Description: During Modular Caustic-Side Solvent Extraction (CSSX) Unit (MCU) operations, Cs-137 concentrations in product streams will vary depending on the location in the process and on the recent process conditions. Calculations of cesium concentrations under a variety of operating conditions reveal the following: (1) Under nominal operations with salt solution feed containing 1.1 Ci Cs-137 per gallon, the maximum Cs-137 concentration in the process will occur in the strip effluent (SE) and equal 15-16.… more
Date: January 18, 2006
Creator: Walker, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technical Review of the UNET2D Hydraulic Model

Description: The Kansas City District of the US Army Corps of Engineers is engaged in a broad range of river management projects that require knowledge of spatially-varied hydraulic conditions such as velocities and water surface elevations. This information is needed to design new structures, improve existing operations, and assess aquatic habitat. Two-dimensional (2D) depth-averaged numerical hydraulic models are a common tool that can be used to provide velocity and depth information. Kansas City Distric… more
Date: May 18, 2009
Creator: Perkins, William A. & Richmond, Marshall C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a Rotary Microfilter for SRS HLW Applications

Description: The processing rate of Savannah River Site (SRS) high-level waste decontamination processes are limited by the flow rate of the solid-liquid separation. The baseline process, using a 0.1 micron cross-flow filter, produces approximately 0.02 gpm/sq. ft. of filtrate under expected operating conditions. Savannah River National Laboratory (SRNL) personnel identified the rotary microfilter as a technology that could significantly increase filter flux, with throughput improvements of as much as 10X f… more
Date: January 18, 2005
Creator: MICHAEL, POIRIER
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Two-D Simulations of Flow and Transport on a Meter-Sized Unsaturated Fractured Tuff Block

Description: Two-D numerical flow and transport experiments were performed with a meter-sized unsaturated fractured block in an attempt to validate the active fracture model (AFM) by estimating {gamma}, a positive constant relating the fraction of active fractures to the effective water saturation for the block. Two different models developed for the study include a discrete fracture network model (DFNM) and a dual continuum model (DCM). The DFNM served to synthetically generate experimental measurements fo… more
Date: September 18, 2002
Creator: Seol, Y.; Kneafsey, T.; Finsterle, S. & Ito, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Studies of Two-Phase Plumes in Stratified Environments

Description: Two-phase plumes play an important role in the more practical scenarios for ocean sequestration of CO{sub 2}--i.e. dispersing CO{sub 2} as a buoyant liquid from either a bottom-mounted or ship-towed pipeline. Despite much research on related applications, such as for reservoir destratification using bubble plumes, our understanding of these flows is incomplete, especially concerning the phenomenon of plume peeling in a stratified ambient. To address this deficiency, we have built a laboratory f… more
Date: November 18, 1998
Creator: Socolofsky, Scott A.; Crounse, Brian C. & Adams, E. Eric
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ocean thermal energy conversion power system development-I. Phase I. Preliminary design report. Volume 1. Final report

Description: The results of a conceptual and preliminary design study of Ocean Thermal Energy Conversion (OTEC) closed loop ammonia power system modules performed by Lockheed Missiles and Space Company, Inc. (LMSC) are presented. This design study is the second of 3 tasks in Phase I of the Power System Development-I Project. The Task 2 objectives were to develop: 1) conceptual designs for a 40 to 50-MW(e) closed cycle ammonia commercial plant size power module whose heat exchangers are immersed in seawater … more
Date: December 18, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Accelerated Carbonate Dissolution as a CO2 Separation and Sequestration Strategy

Description: We have proposed a technique that could reduce CO{sub 2} emissions from near coastal fossil-fuel power plants using existing power plant cooling water flow rates (Rau and Caldeira, 1999; Caldeira and Rau, 2000). Preliminary cost estimates are as low as $68 per tonne C sequestered, as compared to > $170 per tonne C estimated for other approaches to CO{sub 2} separation with geologic or deep-ocean storage. Engineers at McDermott Technologies, Inc., have independently estimated the cost of our … more
Date: February 18, 2004
Creator: Caldeira, K G; Knauss, K G & Rau, G H
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sparger Effects on Gas Volume Fraction Distributions in Vertical Bubble-Column Flows as Measured by Gamma-Densitometry Tomography

Description: Gamma-densitometry tomography is applied to study the effect of sparger hole geometry, gas flow rate, column pressure, and phase properties on gas volume fraction profiles in bubble columns. Tests are conducted in a column 0.48 m in diameter, using air and mineral oil, superficial gas velocities ranging from 5 to 30 cm s{sup -1}, and absolute column pressures from 103 to 517 kPa. Reconstructed gas volume fraction profiles from two sparger geometries are presented. The development length of the … more
Date: January 18, 2000
Creator: GEORGE,DARIN L.; SHOLLENBERGER,KIM ANN & TORCZYNSKI,JOHN R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Optimization of Fluid Front Dynamics in Porous Media Using Rate Control: I. Equal Mobility Fluids

Description: In applications involving this injection of a fluid in a porous medium to displace another fluid, a main objective is the maximization of the displacement efficiency. For a fixed arrangement of injection and production points (sources and sinks), such optimization is possible by controlling the injection rate policy. Despite its practical relevance, however, this aspect has received scant attention in the literature. In this paper, a fundamental approach based on optimal control theory, for the… more
Date: October 18, 1999
Creator: Sundaryanto, Bagus & Yortsos, Yanis C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The use of streambed temperatures to estimate transmission losses on an experimental channel.

Description: Quantifying channel transmission losses in arid environments is important for a variety of reasons, from engineering design of flood control structures to evaluating recharge. To quantify the losses in an alluvial channel, an experiment was performed on a 2-km reach of an alluvial fan located on the Nevada Test Site. The channel was subjected to three separate flow events. Transmission losses were estimated using standard discharge monitoring and subsurface temperature modeling approach. Four s… more
Date: October 18, 2001
Creator: Naranjo, Ramon C.; Young, Michael H.; Niswonger, Richard; Miller, Julianne J. & French, Richard H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A detailed kinetic modeling study of toluene oxidation in a premixed laminar flame

Description: An improved chemical kinetic model for the toluene oxidation based on experimental data obtained in a premixed laminar low-pressure flame with vacuum ultraviolet (VUV) photoionization and molecular beam mass spectrometry (MBMS) techniques has been proposed. The present mechanism consists of 273 species up to chrysene and 1740 reactions. The rate constants of reactions of toluene, decomposition, reaction with oxygen, ipso-additions and metatheses with abstraction of phenylic H-atom are updated; … more
Date: December 18, 2009
Creator: Tian, Zhenyu; Pitz, William J.; Fournet, Rene; Glaude, Pierre-Alexander & Battin-Leclerc, Frederique
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of NOx Sensors for Heavy Vehicle Applications

Description: A DOE CRADA was initiated in February 2000 between Ford Motor Company and the US Department of Energy's Oak Ridge National Laboratory (ORNL). The overall objective of the research agreement was to characterize the performance of emission sensors and identify potential areas of improvement and to develop improved insulating materials with a lower capacitance to minimize radio frequency (RF) interference. A bench-scale device was developed at ORNL to evaluate sensor performance. The test stand wa… more
Date: January 18, 2002
Creator: Armstrong, T. R. & Soltis, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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