Search Results

Advanced search parameters have been applied.
open access

Single particle behavior in plasmas

Description: The paper follows the history of a neutral atom or molecule into a plasma--ionization, dissociation, radiation,--until it becomes a set of charged particles moving in the electromagnetic fields of the plasma system. The various useful forms of the method of averaging are displayed and applied to calculation of constants of motion. The breakdown of these constants is discussed along with some of the implications for fusion systems.
Date: March 10, 1977
Creator: McNamara, B.
Partner: UNT Libraries Government Documents Department
open access

SPXCPL: two-dimensional modeling program of self-potential effects from cross-coupled fluid and heat flow (User's Guide and documentation for Version 1. 0)

Description: The program is applicable to the calculation of self-potential effects due to fluid flow (electrokinetic effects) and heat flow (thermoelectric effects). The geological structure is two dimensional but the sources can be either finite line sources or point sources. The accuracy of the calculated potentials depends on the model discretization and the distance from the source(s). For the default mesh, the accuracy is usually a few percent at a distance of about one unit from the source. Surface b… more
Date: March 1, 1982
Creator: Sill, W. R. & Killpack, T. J.
Partner: UNT Libraries Government Documents Department
open access

Assessment of the risk of transporting liquid chlorine by rail

Description: This report presents the risk of shipping liquid chlorine by rail. While chlorine is not an energy material, there are several benefits to studying chlorine transportation risks. First, chlorine, like energy materials, is widely used as a feedstock to industry. Second, it is the major purification agent in municipal water treatment systems and therefore, provides direct benefits to the public. Finally, other risk assessments have been completed for liquid chlorine shipments in the US and Europe… more
Date: March 1, 1980
Creator: Andrews, W.B.
Partner: UNT Libraries Government Documents Department
open access

Computer simulation of steady-state performance of air-to-air heat pumps

Description: A computer model by which the performance of air-to-air heat pumps can be simulated is described. The intended use of the model is to evaluate analytically the improvements in performance that can be effected by various component improvements. The model is based on a trio of independent simulation programs originated at the Massachusetts Institute of Technology Heat Transfer Laboratory. The three programs have been combined so that user intervention and decision making between major steps of th… more
Date: March 1, 1978
Creator: Ellison, R D & Creswick, F A
Partner: UNT Libraries Government Documents Department
open access

One-dimensional code to predict the thermal behavior of the UTSI MHD radiant furnace

Description: An analytical model of the thermal behavior of the radiant furnace components installed in the CFFF has been developed. Efforts have been primarily directed towards obtaining a representative global evaluation of the heat recovery of the major downstream components. An overall review of the heat transfer code developed specifically for the DOE CFFF downstream components is presented. The basic methods by which the gas state, transport properties, and the thermal radiative and convective propert… more
Date: March 1, 1984
Creator: Galanga, F.L.
Partner: UNT Libraries Government Documents Department
open access

Logistics models for the transportation of radioactive waste and spent fuel

Description: Mathematical modeling of the logistics of waste shipment is an effective way to provide input to program planning and long-range waste management. Several logistics models have been developed for use in parametric studies, contingency planning, and management of transportation networks. These models allow the determination of shipping schedules, optimal routes, probable transportation modes, minimal costs, minimal personnel exposure, minimal transportation equipment, etc. Such information will … more
Date: March 1, 1978
Creator: Joy, D.S. & Holcomb, B.D.
Partner: UNT Libraries Government Documents Department
open access

A survey of air flow models for multizone structures

Description: Air flow models are used to simulate the rates of incoming and outgoing air flows for a building with known leakage under given weather and shielding conditions. Additional information about the flow paths and air-mass flows inside the building can only by using multizone air flow models. In order to obtain more information on multizone air flow models, a literature review was performed in 1984. A second literature review and a questionnaire survey performed in 1989, revealed the existence of 5… more
Date: March 1, 1991
Creator: Feustel, H.E. & Dieris, J.
Partner: UNT Libraries Government Documents Department
open access

Nuclear mass formula with a neutron skin degree of freedom and finite-range model for the surface energy

Description: We study the possibility of extending the model used by Moeller and Nix in 1980 to calculate nuclear masses and fission barriers for nuclei throughout the periodic system, to describe compressibility effects and the existence of a neutron skin. 9 references. (WHK)
Date: March 1, 1984
Creator: Moeller, P. & Myers, W.D.
Partner: UNT Libraries Government Documents Department
open access

Dry deposition velocities

Description: Dry deposition velocities are very difficult to predict accurately. In this article, reported values of dry deposition velocities are summarized. This summary includes values from the literature on field measurements of gas and particle dry deposition velocities, and the uncertainties inherent in extrapolating field results to predict dry deposition velocities are discussed. A new method is described for predicting dry deposition velocity using a least-squares correlation of surface mass transf… more
Date: March 1, 1984
Creator: Sehmel, G.A.
Partner: UNT Libraries Government Documents Department
open access

Development and testing of an air quality model for Mexico City

Description: Los Alamos National Laboratory and Instituto Mexicano del Petroleo have embarked on a joint study of options for improving air quality in Mexico City. The intent is to develop a modeling system which can address the behavior of pollutants in the region so that option for improving Mexico City air quality can be properly evaluated. In February of 1991, the project conducted a field program which yielded a variety of data which is being used to evaluate and improve the models. Normally the worst … more
Date: March 2, 1992
Creator: Williams, M. D.; Streit, G. (Los Alamos National Lab., NM (United States)); Cruz, X.; Ruiz, M.; Sosa, G. (Instituto Mexicano de Petroleo, Mexico City (Mexico)); Russell, A. G. et al.
Partner: UNT Libraries Government Documents Department
open access

Radioactive Waste Isolation in Salt: A Method for Evaluating the Effectiveness of Site Characterization Measurements

Description: The approach presumes that measurements are undertaken to support performance predictions. A quantitative performance objective like groundwater travel time is compared with performance predictions. The approach recognizes that such predictions are uncertain because the measurements upon which they are based are uncertain. The effectiveness of measurement activities is quantified by an index, ..beta.., that reflects the number of standard deviations separating the best estimate of performance f… more
Date: March 1, 1988
Creator: Ditmars, J. D.; Baecher, G. B.; Edgar, D. E. & Dowding, C. H.
Partner: UNT Libraries Government Documents Department
open access

Electron-positron physics at 1 TeV

Description: We discuss the motivation for TeV e/sup +/ e/sup )minus/) linear colliders, some aspects of their design, and the experimental consequences that follow from the design. After a brief discussion of the general physics environment, we consider the discovery potential of these colliders by examining three sample processes: the detection of new heavy leptons, standard Higgs bosons, and charged Higgs bosons. 13 refs., 22 figs., 5 tabs.
Date: March 1, 1988
Creator: Feldman, G. J.
Partner: UNT Libraries Government Documents Department
open access

Feasibility of perfluorocarbon tracers (PFTs) in atmospheric source-receptor experiments

Description: A brief description of the perfluorocarbon tracer (PFT) system, which includes the tracers and the release equipment, the air samplers and the analyzers, is presented along with details on the research needs to provide a viable system for MATEX-scenario experiments. The present family of 2 viable PFTs needs to be increased to 5 to 6. Given the present precision of the analysis system, a one year long tracer experiment consisting of 4 hour releases every 60 hours from 5 different sites would req… more
Date: March 1, 1984
Creator: Dietz, R. N. & Senum, G. I.
Partner: UNT Libraries Government Documents Department
open access

Self-potential modeling from primary flows

Description: A new method for the calculation of self potentials (SP) based on induced current sources is presented. The induced current sources are due to divergences of the convective current which is driven, in turn, by a primary flow, either heat or fluid. Numerical modeling utilizing this method has been implemented using a two-dimensional transmission surface algorithm. When the primary flow is driven by the gradient of a potential, joint modeling of the primary flow and the resultant SP is possible w… more
Date: March 1, 1981
Creator: Sill, W.R.
Partner: UNT Libraries Government Documents Department
open access

Detailed report on tested models companion report 2 to simulation of geothermal subsidence (LBL 10571)

Description: An assessment was performed of existing mathematical models for subsidence simulation and prediction. Detailed analyses are presented of the theory, power, usability, and performance of the seven models used in conjunction with an ongoing research program aimed at improved understanding and control of ground movements caused by geothermal power production. The models used were: hand-calculation techniques; the nucleus-of-strain method; the one-dimensional Terzaghi consolidation method; the two-… more
Date: March 1, 1980
Creator: Miller, I.; Dershowitz, W.; Jones, K.; Myer, L.; Roman, K. & Schauer, M.
Partner: UNT Libraries Government Documents Department
open access

Geother Evaluation and Improvement: A Progress Report Including Test Cases for Two-Dimensional BWIP (Basalt Waste Isolation Project) Analysis

Description: The objective of the work is to evaluate the GEOTHER code and peform necessary improvements to make it specifically suitable for predicting the environmental conditions of the waste package for the Basalt Waste Isolation Project (BWIP); and to perform resaturation analyses, that is, the analyses of steam formation and condensation, for the repository and waste package using the improved GEOTHER code. This is a progress report to BWIP documenting the status of GEOTHER code testing, evaluation, a… more
Date: March 1, 1988
Creator: Bian, S. H.; Budden, M. J.; Bartley, C. L. & Yung, S. C.
Partner: UNT Libraries Government Documents Department
open access

Monte Carlo Simulation of Turbulent Atmospheric Transport and Comparisons with Experimental Data. [/Sup 41/Ar Continuously Emitted From Bnl Reactor to Atmosphere]

Description: In a previous paper Peterson presented measurements on the /sup 41/Ar emitted continuously into the atmosphere from a reactor at the Brookhaven National Laboratory. Here, calculated results obtained with the Monte Carlo atmospheric transport model of Watson and Barr are presented and compared with the experimental data. The measured quantities with which comparisons are made are: the position north of Brookhaven where the maximum /sup 41/Ar concentration occurred for specific values of x (east … more
Date: March 1, 1978
Creator: Alsmiller, F. S.; Alsmiller, R. G., Jr.; Bertini, H. W. & Begovich, C. L.
Partner: UNT Libraries Government Documents Department
open access

Calculation of particulate dispersion in a design-basis tornadic storm from the Babcock and Wilcox Plant, Leechburg, Pennsylvania

Description: A three-dimensional numerical model is used to calculate ground-level air concentration and deposition (due to precipitation scavenging) after a hypothetical tornado strike at the Babcock and Wilcox Plutonium Fabrication Facility at Leechburg, Pennsylvania. Plutonium particles lss than 20 ..mu..m in diameter are assumed to be lifted into the tornadic storm cell by the vortex. The rotational characteristics of the tornadic storm are embedded within the larger mesoscale flow of the storm system. … more
Date: March 1, 1978
Creator: Pepper, D.W.
Partner: UNT Libraries Government Documents Department
open access

Pressure transient analysis in piping systems including the effects of plastic deformation and cavitation. [PTA-2 code]

Description: Computational methods for analyzing pressure transients in the intermediate heat transport system of a sodium-cooled breeder reactor are being developed at Argonne National Laboratory. Because these systems typically operate at low pressures, thin-walled piping is used. Consequently, the pressure pulses produced by a sodium/water reaction in a steam generator or a pipe break may plastically deform sections of the piping, and rarefaction waves, because of the low operating pressure, may produce … more
Date: March 1, 1978
Creator: Youngdahl, C.K.; Kot, C.A. & Valentin, R.A.
Partner: UNT Libraries Government Documents Department
open access

Spatial patterns of radiological dose from wells drilled near nuclear waste repositories

Description: This report describes methodology for assessing the spatial patterns of radiological dose to man from wells drilled near nuclear waste repositories. Descriptions of the various categories of water wells and a model of a typical aquifer are presented. The equation governing the one-dimensional flow of waste in groundwater through porous media to a well is discussed. This is followed by development of a method for constructing lines of constant dose from a well located randomly in the plane of th… more
Date: March 31, 1980
Partner: UNT Libraries Government Documents Department
open access

1991 Pacific Northwest Loads and Resources Study, Technical Appendix: Volume 1.

Description: This publication provides detailed documentation of the load forecast scenarios and assumptions used in preparing BPA's 1991 Pacific Northwest Loads and Resources Study (the Study). This is one of two technical appendices to the Study; the other appendix details the utility-specific loads and resources used in the Study. The load forecasts and assumption were developed jointly by Bonneville Power Administration (BPA) and Northwest Power Planning Council (Council) staff. This forecast is also us… more
Date: March 1, 1992
Creator: United States. Bonneville Power Administration.
Partner: UNT Libraries Government Documents Department
open access

Bedded-salt repository analysis. Final report

Description: This report contains a description of an analysis of generic nuclear waste repository in bedded salt. This analysis was performed by TASC for inclusion in a major Lawrence Livermore Laboratory report to NRC; this report therefore should be viewed as providing more complete and detailed information about this analysis than was possible to include in the LLL report. The analysis is performed with the NUTRAN computer codes which are described in the report. The model to be analyzed is defined, and… more
Date: March 31, 1980
Creator: Guiffre, M.S.; Kaplan, M.F.; Ensminger, D.A.; Oston, S.G. & Nalbandian, J.Y.
Partner: UNT Libraries Government Documents Department
open access

Mirror fusion. Quarterly report, October-December 1981

Description: Research during this period is described for the following areas: (1) simulation of long-timescale plasma phenomena, (2) analytic model of radiation-dominated decay of a compact toroid, (3) hf microinstabilities in hot-electron plasma, (4) improved heating with two-frequency ecrh, (5) exact and approximate configurational invariants, (6) negative ion formation in hydrogen discharges, (7) confinement systems, (8) development and technology, and (9) MFTF. (MOW)
Date: March 1, 1982
Partner: UNT Libraries Government Documents Department
open access

Deposition, Fabrication and Analysis of Polycrystalline Silicon MIS Solar Cells. Final Report, January 1-December 31, 1979

Description: Discussion of MIS cell fabrication techniques, protovoltaic response data, I-V-T analysis to reveal conduction mechanisms, a detailed computer model, optimum MIS solar cell design, surface state effects, Auger studies, reliability studies and e-beam deposition of thin silicon films are included. The most important features of the work during 1979 include the one pump-down fabrication process, establishing a consistent fabrication sequence, achieving 13% efficiency of 2 cm/sup 2/ area, an evalua… more
Date: March 1, 1980
Creator: Anderson, W. A.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen