风力机专用翼型数值模拟中湍流模型的选择

Choice of Turbulence Model for Numerical Simulation of Special Airfoil of Wind Turbine

基于三维N-S方程,分别选用k-ε、k-ω、RSM和LES四种湍流模型对风力机专用S827翼型进行了数值模拟,对比了不同湍流模型对气动模拟精度的影响,得到了雷诺数为4×106时,该翼型在-4°～10°攻角下的升力和阻力特性曲线以及压力分布图,并与NREL的气动数据进行对比,结果表明,RSM湍流模型更适用于风力机专用翼型的数值模拟。

Different turbulence models such as k-ε、k-ω、RSM and LES are used to simulate airfoil S827 based on 3D N-S equation, and the computational results are compared. The lift and drag coefficients and pressure distribution are obtained within attack angle from -4° to 10° when Re equals 4×106. Through the comparison with NREL aerodynamic data, it is revealed that RSM turbulence model is more useful for the numerical simulation of special airfoil of wind turbine.