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A survey of problems in divertor and edge plasma theory

Theoretical physics problems related to divertor design are presented, organized by the region in which they occur. Some of the open questions in edge physics are presented from a theoretician's point of view. After a cursory sketch of the fluid models of the edge plasma and their numerical realization, the following topics are taken up: time-dependent problems, non-axisymmetric effects, anomalous transport in the scrape-off layer, edge kinetic theory, sheath effects and boundary conditions in … more

Date: December 22, 1992

Creator: Boozer, A. (Coll. of William and Mary, Williamsburg, VA (United States)); Braams, B.; Weitzner, H. (New York Univ., NY (United States). Courant Inst. of Mathematical Sciences); Cohen, R. (Lawrence Livermore National Lab., CA (United States)); Hazeltine, R. (Texas Univ., Austin, TX (United States). Inst. for Fusion Studies); Hinton, F. (General Atomics, San Diego (United States)) et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Measurement of local void fraction in a ribbed annulus

The computer code FLOWTRAN-TF is used to analyze hypothetical hydraulic accidents for the nuclear reactor at the Savannah River Site. During a hypothetical Large Break Loss-of-Coolant Accident (LOCA), reactor assemblies would contain a two-phase mixture of air and water which flows downward. Reactor assemblies consist of nested, ribbed annuli. Longitudinal ribs divide each annulus into four subchannels. For accident conditions, air and water can flow past ribs from one subchannel to another. Fo… more

Date: December 22, 1992

Creator: Steimke, J. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A survey of problems in divertor and edge plasma theory

Theoretical physics problems related to divertor design are presented, organized by the region in which they occur. Some of the open questions in edge physics are presented from a theoretician`s point of view. After a cursory sketch of the fluid models of the edge plasma and their numerical realization, the following topics are taken up: time-dependent problems, non-axisymmetric effects, anomalous transport in the scrape-off layer, edge kinetic theory, sheath effects and boundary conditions in … more

Date: December 22, 1992

Creator: Boozer, A.; Braams, B.; Weitzner, H.; Cohen, R.; Hazeltine, R.; Hinton, F. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Air toxics from heavy oil production and consumption

This report assesses the potential impact of recent Federal and state regulations for airborne toxic substances on the production and consumption of heavy fuel oils. Emissions of nickel from heavy oil production in California are considered in some detail, in conjunction with California state regulations for toxic emissions. Although the use of thermal energy from heavy crude oils could in theory be impacted by toxic air pollution regulations, recent trends towards the use of natural gas for th… more

Date: December 22, 1992

Creator: Lipfert, F. W.; DePhillips, M. P. & Moskowitz, P. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

captions transcript

[News Clip: USAF Lesbian]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story. This story aired at 5pm.

Date: December 22, 1992, 5:00 p.m.

Duration: 43 seconds

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Item Type: Video

Partner: UNT Libraries Special Collections

open access

Technology Development for Iron Fischer-Tropsch Catalysts

Objective is to develop producing active, stable iron Fischer-Tropsch catalysts for use in slurry-phase synthesis reactors and to synthesize such catalysts on a large scale for process development and long-term testing in slurry bubble-column reactors. A mixed oxalate of Fe, Cu, and K was prepared; a catalyst will be prepared from this material. An evaluation run was performed on an Fe-based UCI catalyst, which was shown to produce low levels of C[sub 1] and C[sub 2] paraffins; e.g., at the end… more

Date: December 22, 1992

Creator: Frame, R. R. & Gala, H. B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Measurement of local void fraction in a ribbed annulus

Date: December 22, 1992

Creator: Steimke, J. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Silica Membranes for Hydrogen Separation From Coal Gas

The project objectives are (1) to explore new silylation reagents and reaction conditions with the purpose of reducing the thickness and increasing the permeance of silica membranes, (2) to delineate mechanism and kinetics of silica deposition, (3) to measure the permeability of silica layers at different extents of deposition and (4) to mathematically model the relationship of permeability and membrane structure. Study of the literature has suggested the use of certain ultrafast silylation rea… more

Date: December 22, 1992

Creator: Gavalas, G. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Technology development for iron Fischer-Tropsch catalysts. Technical progress report No. 5, September 26, 1991--December 26, 1991

Objective is to develop producing active, stable iron Fischer-Tropsch catalysts for use in slurry-phase synthesis reactors and to synthesize such catalysts on a large scale for process development and long-term testing in slurry bubble-column reactors. A mixed oxalate of Fe, Cu, and K was prepared; a catalyst will be prepared from this material. An evaluation run was performed on an Fe-based UCI catalyst, which was shown to produce low levels of C{sub 1} and C{sub 2} paraffins; e.g., at the end… more

Date: December 22, 1992

Creator: Frame, R. R. & Gala, H. B.

Item Type: Report

Partner: UNT Libraries Government Documents Department