United States Nuclear Regulatory Commission - Protecting People and the Environment

Assessment of RELAP5/MOD2 Against 25 Dryout Experiments Conducted at the Royal Institute of Technology (NUREG/IA-0009)

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Publication Information

Date Published: October 1986

Prepared by:
A. Sjoberg, D. Caraher

Swedish Nuclear Power Inspectorate
S-102 52 Stockholm, Sweden

Prepared as part of:
The Agreement on Research Participation and Technical Exchange
under the International Thermal-Hydraulic Code Assessment
and Application Program (ICAP)

Published by:
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555

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Abstract

RELAP5/MOD2 simulations of post-dryout heat transfer in a 7 m long, 1.5 cm diameter heated tube are reported. The Biasi critical heat flux correlation is shown to be inadequate for predicting the experimental dryout. RELAP5 accurately predicted the measured temperatures downstream of the dryout once it was forced to predict dryout at the experimentally measured location.

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