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RELAP5-3D Validation Study Using MB-2 Prototypical Steam Generator Steady-State Data

A. Sawyer, M. Williamson, K. Zhao, A. Ruggles

Nuclear Technology / Volume 151 / Number 3 / Pages 272-280

September 2005

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A validation study of RELAP5-3D is performed using data from the Model Boiler Number 2 (MB-2) Prototypical Steam Generator Testing Program. The MB-2 is a 6.67-MW(thermal) power-scaled representation of the Westinghouse Model F steam generator. Comparisons with previous simulations using RELAP5/MOD3.2 are also offered. Limit cycles predicted by the RELAP5/MOD3.2 simulation are reduced in the RELAP5-3D simulation using identical nodalization. Steady-state data from the MB-2 tests used in the validation do not exhibit a limit cycle. The sources of the predicted limit cycles are investigated and feedback mechanisms contributing to the limit cycles are explained.

 
 
 
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