Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Predictions of vapor superheat in a rod bundle geometry with modified RELAP5/MOD2

Conference · · Trans. Am. Nucl. Soc.; (United States)
OSTI ID:5716804

Analysis of a recent nine (3 x 3)-rod bundle post critical heat flux (CHF) test from the Lehigh Univ. test facility with RELAP5/MOD2 cycle 36.02 has shown that the code grossly underpredicts the vapor superheats. Similar results have been reported in the analysis of FLECHT-SEA-SET experiments. This indicated that RELAP5 vapor-to-droplet interfacial heat transfer needs to be revised. Reasonable agreement with the measurements are achieved by implementing in the code a new vapor/droplet heat transfer correlation. In addition, a comparison between several interfacial heat transfer correlations is performed.

Research Organization:
Texas A and M Univ., College Station
OSTI ID:
5716804
Report Number(s):
CONF-870601-
Journal Information:
Trans. Am. Nucl. Soc.; (United States), Journal Name: Trans. Am. Nucl. Soc.; (United States) Vol. 54; ISSN TANSA
Country of Publication:
United States
Language:
English