RELAP5 assessment of noncondensable test data for passive cooling applications

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:6934104

Kullberg, C

Condensation heat transfer in the presence of noncondensable (NC) gases is of concern in the design of passive heat removal systems for a number of recently proposed advanced reactor designs. In general, the presence of NCs will degrade the efficiency of such passive heat removal systems and, in some cases, induce unstable flow patterns. As part of a research effort to better understand passive heat removal dynamics, a series of numerical steady-state simulations in the presence of NCs were performed to evalutate RELAP5/MOD3 against test data. This assessment was made using data from the University of California, Berkeley (UCB) natural circulation loop test facility. For fine enough nodalization in the condenser region, the RELAP5/MOD3 simulations generally captured the same phenomena as observed in the tests.

• Research Organization: EG and G Idaho, Inc., Idaho Falls, ID (United States)
• Sponsoring Organization: NRC; Nuclear Regulatory Commission, Washington, DC (United States)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6934104
• Report Number(s): EGG-M-92391; CONF-921102--23; ON: DE93001967
• Country of Publication: United States
• Language: English

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Light-Water Moderated
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99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ACCIDENTS
BWR TYPE REACTORS
COMPUTER CODES
COMPUTERIZED SIMULATION
CONDENSATES
COOLING SYSTEMS
ENERGY TRANSFER
ENRICHED URANIUM REACTORS
FLUID MECHANICS
HEAT TRANSFER
HYDRAULICS
LOSS OF COOLANT
MECHANICS
POWER REACTORS
R CODES
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR SAFETY
REACTORS
SAFETY
SIMULATION
THERMAL REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS