Turbulence Modelling of Deep Dynamic Stall at Low Reynolds Number
نویسندگان
چکیده
The unsteady separated turbulent flow around an oscillating airfoil pitching in a sinusoidal pattern in the regime of low Reynolds number is investigated numerically employing the URANS approach with two advanced turbulence models, namely the RNG kmode and Transition SST model, and the DES approach based on the SST kmodel. A comparison with experimental data shows that the SST kbased DES approach is superior to the employed URANS turbulence models and presents good agreement with the validation data. The flow development of the dynamic stall is discussed. Key words—DES, dynamic stall, low Reynolds number, URANS, wind turbine.
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