为了提高风力机翼型特性模拟的准确性,采用数值求解N-S方程的方法,对NACA0015翼型的气动性能进行了数值模拟.考虑不同湍流模型、不同的计算格式、不同近壁面处理方法对风力机翼型特性模拟有着不同影响,数值模拟中应用3种不同湍流模型和3种不同的计算格式,同时配合6种不同近壁面处理方法,并将计算结果与实验结果进行对比。结果表明,在边界层内布置合适的网格点,采用k—ωSST湍流模型数值模拟,可使NACA0015翼型阻力系数的计算精度明显提高。
In order to calculate aerodynamic characteristics of wind turbine airfoil more accurately, the NCA0015 airfoil aerodynamics performance was calculated by solving the N-S equations. Considering the effect of the different models, schemes, and grid distributions on the solutions, 3 models, 3 schemes, and 6 grid distributions were employed. And the calculation results were compared with experimental ones. The comparison shows that NACA0015 airfoil's drag coefficient is more accurate by using k-ωsst model,the calculation accuracy strongly depends on the discrete mesh near the boundary layer of the airfoil.