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Title: Conceptual Design of a CERMET NTR Fission Core Using Multiphysics Modeling Techniques

Abstract

An initial pre-conceptual CERMET Nuclear Thermal Propulsion reactor system is investigated within this paper. Reactor configurations are investigated where the fuel consists of 60 vol.% UO2 and 40 vol.% W where the UO2 consists of Gd2O3 concentrations of 5 and 10 mol.%.Gd2O3. The fuel configuration consisting of 5 mol.% UO2 was found to have a total mass of 2761 kg and a thrust to weight ratio of 4.10 and required a coolant channel surface area to fueled volume ratio of approximately 15.0 in order to keep the centerline temperature below 3000 K. The configuration consisting of 10 mol.% Gd2O3 required a surface area to volume ratio of approximately 12.2 to cool the reactor to a peak temperature of 3000 K and had a total mass of 3200 kg and a thrust to weight ratio of 3.54. It is not known yet what concentration of Gd2O3 is required to maintain fuel stability at 3000 K; however, both reactors offer the potential for operations at 25,000 lb, and at a specific impulse which may range from 900 to 950 seconds.

Authors:
; ;
Publication Date:
Research Org.:
Idaho National Laboratory (INL)
Sponsoring Org.:
DOE - NE
OSTI Identifier:
1042399
Report Number(s):
INL/CON-11-21551
TRN: US1202775
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: AIAA Joint Propulsion Conference,San Diego, CA,07/31/2011,08/03/2011
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; CERMETS; CONFIGURATION; COOLANTS; DESIGN; FUEL-COOLANT INTERACTIONS; MEETINGS; PROPULSION REACTORS; REACTORS; SIMULATION; STABILITY; SURFACE AREA; VOLUME; WEIGHT; CERMET; Fission Core; Multiphysics

Citation Formats

Jonathan A. Webb, Brian J. Gross, and William T. Taitano. Conceptual Design of a CERMET NTR Fission Core Using Multiphysics Modeling Techniques. United States: N. p., 2011. Web.
Jonathan A. Webb, Brian J. Gross, & William T. Taitano. Conceptual Design of a CERMET NTR Fission Core Using Multiphysics Modeling Techniques. United States.
Jonathan A. Webb, Brian J. Gross, and William T. Taitano. Mon . "Conceptual Design of a CERMET NTR Fission Core Using Multiphysics Modeling Techniques". United States. https://www.osti.gov/servlets/purl/1042399.
@article{osti_1042399,
title = {Conceptual Design of a CERMET NTR Fission Core Using Multiphysics Modeling Techniques},
author = {Jonathan A. Webb and Brian J. Gross and William T. Taitano},
abstractNote = {An initial pre-conceptual CERMET Nuclear Thermal Propulsion reactor system is investigated within this paper. Reactor configurations are investigated where the fuel consists of 60 vol.% UO2 and 40 vol.% W where the UO2 consists of Gd2O3 concentrations of 5 and 10 mol.%.Gd2O3. The fuel configuration consisting of 5 mol.% UO2 was found to have a total mass of 2761 kg and a thrust to weight ratio of 4.10 and required a coolant channel surface area to fueled volume ratio of approximately 15.0 in order to keep the centerline temperature below 3000 K. The configuration consisting of 10 mol.% Gd2O3 required a surface area to volume ratio of approximately 12.2 to cool the reactor to a peak temperature of 3000 K and had a total mass of 3200 kg and a thrust to weight ratio of 3.54. It is not known yet what concentration of Gd2O3 is required to maintain fuel stability at 3000 K; however, both reactors offer the potential for operations at 25,000 lb, and at a specific impulse which may range from 900 to 950 seconds.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {8}
}

Conference:
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