As one of the advanced film cooling scheme, fan-shaped hole exhibits significant improvement in film cooling effectiveness compared with cylindrical holes. In this paper, numerical simulations are applied to predict the cooling effectiveness for fan-shaped hole at various flow conditions. The flow conditions are evaluated at three blowing ratios (0.5, 1, 1.5) and four mainstream Mach numbers (0.3, 0.45, 0.6, 0.75). CFD simulations are performed in three RANS turbulence models namely realizable k-εmodel, SST k-ωmodel and standard k-εmodel. Simulation results are compared with experimental data in terms of centerline adiabatic cooling effectiveness, the realizable k-εmodel shows a better agreement in predicting the film cooling performance. Although some agreements are obtained, all the three turbulence models tend to overpredict the cooling effectiveness compared to experimental data.
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