Flow instability prediction in low-pressure subcooled boiling flows using CFD codes

Dilla, E, Tu, J and Yeoh, G 2006, 'Flow instability prediction in low-pressure subcooled boiling flows using CFD codes', ANZIAM Journal, vol. 46, pp. 1336-1352.


Document type: Journal Article
Collection: Journal Articles

Title Flow instability prediction in low-pressure subcooled boiling flows using CFD codes
Author(s) Dilla, E
Tu, J
Yeoh, G
Year 2006
Journal name ANZIAM Journal
Volume number 46
Start page 1336
End page 1352
Total pages 16
Publisher Australian Mathematics Publishers
Abstract A proposed model for low pressure subcooled boiling flow was incorporated into the safety reactor code RELAP5/MOD3.2 to enhance the performance of the reactor code to predict the occurrence of the Ledinegg-type of instability in two phase flows. The nodalization scheme employed for the particular geometry as modeled in the RELAP5 code is described. The modified code was validated against experimental data and a marked improvement in predictive performance was noted. Simulation results using the modified RELAP5 code and CFX were also compared. Discrepancies between the modified RELAP5 predictions and the experimental benchmark were observed, particularly on the influence of subcooling on the flow instability.
Subject Mechanical Engineering not elsewhere classified
Copyright notice Copyright Austral. Mathematical Soc.; prepared January 6, 2006
ISSN 1446-1811
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