Void Fraction Prediction by CATHARE 2 of OECD/NRC BFBT and PSBT Benchmarks
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
O8-4 OECD Thermalhydraulics Benchmarks

Luben Sabotinov (IRSN)


The objective of the current study is to evaluate the performance of the last version of the French best

estimate thermal-hydraulic code CATHARE 2 regarding void fraction prediction, comparing the

analytical results with the experiments in the framework of International OECD/NRC Benchmarks based

on NUPEC (Nuclear Power Engineering Corporation) BWR Full-size Fine-mesh Bundle Tests (BFBT)

and PWR Subchannel and Bundle Tests (PSBT). The results show reasonable prediction of the void

fraction distribution in broad range of variation of the operational parameters: pressures, mass fluxes,

power and inlet subcooling, which characterize the operation of Light Water Reactors.

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