PLENUM-2A: a program for transient analysis of LMFBR outlet plenums

Technical Report · Wed Jan 31 19:00:00 EST 1979

DOI:https://doi.org/10.2172/6441487· OSTI ID:6441487

Howard, P A; Carbajo, J J

An improved version of the PLENUM-2 code, PLENUM-2A, has been developed to predict the thermal conditions in an LMFBR outlet plenum after a reactor scram. Both the old and the improved versions divide the transient into three consecutive stages and consider only two mixing regions within the outlet plenum. Modifications of the code as reported here include elimination of the three second delay between Stage 1 and Stage 2, a simplification of the transition stage which occurs between complete mixing and the stratification phase, and an improved hot-cold interface rise-rate correlation. In most cases, PLENUM-2A has better agreement with available data than does PLENUM-2.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: U.S. Department of Energy
• DOE Contract Number: W-31-109-ENG-38; NONE
• OSTI ID: 6441487
• Report Number(s): ANL-CT-79-17; 194421
• Country of Publication: United States
• Language: English

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