The purpose of the present study is to present new hydraulic benchmark data obtained for
PWR rod bundles for the purpose of benchmarking computational fluid dynamics (CFD)
models of the rod bundle. The flow field in a PWR fuel assembly downstream of structural
grids which have mixing vane grids attached is very complex due to the geometry of the
subchannel and the high axial component of the velocity field relative to the secondary flows
which are used to enhance the heat transfer performance of the rod bundle. Westinghouse …