Swirling flow induced by the twist vanes can enhance the heat transfer in the rod-bundle fuel
assembly. In order to investigate accuracy of the k-ε models in predicting the swirling flow in
a rod bundle subchannel, the CFD simulations with the standard and realizable k-ε model
are benchmarked with In et al.'s experiment. The nonlinear closure models are utilized with
the standard k-ε model to account for the curved and rotational flow, while the curvature
correction model is employed in the realizable k-ε model. Comparison with the experiment …