关键词: 计算流体力学, 翼型失速, detached-eddysimulation, Spalart-Allmaras湍流模型

Abstract: Detached-Eddy Simulation (DES) is applied to three airfoils with different stall types. The method combines the strong points of Reynolds-averaged Navier-Stokes and Large Eddy Simulation approaches. Spalart-Allmaras Model is basically used, which reduces to a RANS formulation near a solid surface and to a subgrid model away from the wall. LU-SGS implicit scheme is employed to solve the model in time. Comparing with the experiment data, it is found that stall angle can be reasonably predicted by the present method.

Key words: computational fluid dynamics, airfoil stall, detached-eddy simulation, Spalart-Allmaras turbulence model