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Title: Development of High Fidelity, Fuel-Like Thermal Simulators for Non-Nuclear Testing

Abstract

Non-nuclear testing can be a valuable tool in the development of a space nuclear power or propulsion system. In a non-nuclear test bed, electric heaters are used to simulate the heat from nuclear fuel. Work at the NASA Marshall Space Flight Center seeks to develop high fidelity thermal simulators that not only match the static power profile that would be observed in an operating, fueled nuclear reactor, but also match the dynamic fuel pin performance during feasible transients. Comparison between the fuel pins and thermal simulators is made at the outer fuel clad surface, which corresponds to the outer sheath surface in the thermal simulator. The thermal simulators that are currently being developed are designed to meet the geometric and power requirements of a proposed surface power reactor design, accommodate testing of various axial power profiles, and incorporate imbedded instrumentation. Static and dynamic fuel pin performances for a proposed reactor design have been determined using SINDA/FLUINT thermal analysis software, and initial comparison has been made between the expected nuclear performance and the performance of conceptual thermal simulator designs. Through a series of iterative analysis, a conceptual high fidelity design will be developed, followed by engineering design, fabrication, and testing tomore » validate the overall design process. Although the resulting thermal simulator will be designed for a specific reactor concept, establishing this rigorous design process will assist in streamlining the thermal simulator development for other reactor concepts. This paper presents the current status of high fidelity thermal simulator design relative to a SNAP derivative reactor design that could be applied for Lunar surface power.« less

Authors:
; ; ;  [1];  [2];  [3];  [2]
  1. NASA Marshall Space Flight Center, Nuclear Systems Branch/ER24, MSFC, AL 25812 (United States)
  2. Los Alamos National Laboratory, Decision Applications Division, Los Alamos, NM 87545 (United States)
  3. (United States)
Publication Date:
OSTI Identifier:
21054559
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 880; Journal Issue: 1; Conference: International forum-STAIF 2007: 11. conference on thermophysics applications in microgravity; 24. symposium on space nuclear power and propulsion; 5. conference on human/robotic technology and the vision for space exploration; 5. symposium on space colonization; 4. symposium on new frontiers and future concepts, Albuquerque, NM (United States), 11-15 Feb 2007; Other Information: DOI: 10.1063/1.2437499; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; COMPARATIVE EVALUATIONS; DESIGN; F CODES; FABRICATION; FISSION; FUEL PINS; ITERATIVE METHODS; NUCLEAR FUELS; PERFORMANCE; POWER REACTORS; POWER SYSTEMS; PROPULSION SYSTEMS; S CODES; SIMULATORS; TESTING; THERMAL ANALYSIS; TRANSIENTS; NESDPS Office of Nuclear Energy Space and Defense Power Systems

Citation Formats

Bragg-Sitton, Shannon M., Dickens, Ricky, Adams, Mike, Davis, Joe, Dixon, David, North Carolina State University, Raleigh, NC, and Kapernick, Richard. Development of High Fidelity, Fuel-Like Thermal Simulators for Non-Nuclear Testing. United States: N. p., 2007. Web. doi:10.1063/1.2437499.
Bragg-Sitton, Shannon M., Dickens, Ricky, Adams, Mike, Davis, Joe, Dixon, David, North Carolina State University, Raleigh, NC, & Kapernick, Richard. Development of High Fidelity, Fuel-Like Thermal Simulators for Non-Nuclear Testing. United States. doi:10.1063/1.2437499.
Bragg-Sitton, Shannon M., Dickens, Ricky, Adams, Mike, Davis, Joe, Dixon, David, North Carolina State University, Raleigh, NC, and Kapernick, Richard. Tue . "Development of High Fidelity, Fuel-Like Thermal Simulators for Non-Nuclear Testing". United States. doi:10.1063/1.2437499.
@article{osti_21054559,
title = {Development of High Fidelity, Fuel-Like Thermal Simulators for Non-Nuclear Testing},
author = {Bragg-Sitton, Shannon M. and Dickens, Ricky and Adams, Mike and Davis, Joe and Dixon, David and North Carolina State University, Raleigh, NC and Kapernick, Richard},
abstractNote = {Non-nuclear testing can be a valuable tool in the development of a space nuclear power or propulsion system. In a non-nuclear test bed, electric heaters are used to simulate the heat from nuclear fuel. Work at the NASA Marshall Space Flight Center seeks to develop high fidelity thermal simulators that not only match the static power profile that would be observed in an operating, fueled nuclear reactor, but also match the dynamic fuel pin performance during feasible transients. Comparison between the fuel pins and thermal simulators is made at the outer fuel clad surface, which corresponds to the outer sheath surface in the thermal simulator. The thermal simulators that are currently being developed are designed to meet the geometric and power requirements of a proposed surface power reactor design, accommodate testing of various axial power profiles, and incorporate imbedded instrumentation. Static and dynamic fuel pin performances for a proposed reactor design have been determined using SINDA/FLUINT thermal analysis software, and initial comparison has been made between the expected nuclear performance and the performance of conceptual thermal simulator designs. Through a series of iterative analysis, a conceptual high fidelity design will be developed, followed by engineering design, fabrication, and testing to validate the overall design process. Although the resulting thermal simulator will be designed for a specific reactor concept, establishing this rigorous design process will assist in streamlining the thermal simulator development for other reactor concepts. This paper presents the current status of high fidelity thermal simulator design relative to a SNAP derivative reactor design that could be applied for Lunar surface power.},
doi = {10.1063/1.2437499},
journal = {AIP Conference Proceedings},
number = 1,
volume = 880,
place = {United States},
year = {Tue Jan 30 00:00:00 EST 2007},
month = {Tue Jan 30 00:00:00 EST 2007}
}