GAMMA multidimensional multicomponent mixture analysis to predict air ingress phenomena in an HTGR

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We developed a multidimensional GAs Multicomponent Mixture Analysis (GAMMA) code in order to investigate chemical reaction behaviors related to an air ingress accident and the thermofluid transients in high-temperature gas-cooled reactors. The implicit continuous Eulerian technique is adopted for the reduction of a 10N x 10N matrix into an N x N pressure difference matrix and fast transient computation. In the validation with a high-temperature engineering test reactor (HTTR)-simulated air ingress experiment, the onset times of natural convection are accurately predicted within a 10% deviation. Small internal leaks in the HTTR-simulated test facility have been found to significantly affect the consequence of air ingress. In all the simulated cases for a SANA-1 afterheat removal test, the predictions of GAMMA are in a high level of agreement with the measured temperature profiles and are comparable to the results of other codes (TINTS, THERMIX/DIREKT, and TRIO-EF).
Publisher
AMER NUCLEAR SOC
Issue Date
2006-01
Language
English
Article Type
Article
Keywords

SYSTEM; FLOW

Citation

NUCLEAR SCIENCE AND ENGINEERING, v.152, no.1, pp.87 - 97

ISSN
0029-5639
URI
http://hdl.handle.net/10203/92556
Appears in Collection
NE-Journal Papers(저널논문)
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