Abstract
In this study, numerical simulation of turbulent cavitating flow around a two dimensional hydrofoil was performed. RANS/LES hybrid model were compared with RANS model. Dynamic switching according to flow field was used for RANS/LES hybrid model. In a non-cavitating and cavitating condition, time-averaged lift and drag coefficient obtained by both turbulence model were approximately the same magnitude. In a cavitating condition, the results obtained by both turbulence model showed periodic shedding of cloud cavitation. However, the Strouhal number obtained by RANS/LES hybrid model was smaller than that by RANS model, and was in the predicted range by an experiment.
