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Title: Computer modeling of single-cell and multicell thermionic fuel elements

Modeling efforts are undertaken to perform coupled thermal-hydraulic and thermionic analysis for both single-cell and multicell thermionic fuel elements (TFE). The analysis--and the resulting MCTFE computer code (multicell thermionic fuel element)--is a steady-state finite volume model specifically designed to analyze cylindrical TFEs. It employs an interactive successive overrelaxation solution technique to solve for the temperatures throughout the TFE and a coupled thermionic routine to determine the total TFE performance. The calculated results include temperature distributions in all regions of the TFE, axial interelectrode voltages and current densities, and total TFE electrical output parameters including power, current, and voltage. MCTFE-generated results compare experimental data from the single-cell Topaz-II-type TFE and multicell data from the General Atomics 3H5 TFE to benchmark the accuracy of the code methods.
Authors:
;  [1]
  1. Oregon State Univ., Corvallis, OR (United States). Dept. of Nuclear Engineering
Publication Date:
OSTI Identifier:
248112
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Technology; Journal Volume: 114; Journal Issue: 2; Other Information: PBD: May 1996
Country of Publication:
United States
Language:
English
Subject:
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; SPACE POWER REACTORS; THERMIONIC FUEL ELEMENTS; COMPUTERIZED SIMULATION; TOPAZ REACTOR; HEAT TRANSFER; HYDRAULICS; M CODES; COMPARATIVE EVALUATIONS; THEORETICAL DATA NESDPS Office of Nuclear Energy Space and Defense Power Systems