风力机翼型摩擦阻力数值计算中不同湍流模型的比较研究  

Comparative Study on Different Turbulenct Models for Numerical Simulation of Wind Turbine Airfoil Friction

作　　者：巫发明[1,2] 杨从新[1] 张玉良[1] 赵伟国[1] 

机构地区：[1]兰州理工大学,甘肃兰州730050 [2]南车株洲电力机车研究所有限公司,湖南株洲412001

出　　处：《流体机械》2008年第12期11-14,6,共5页Fluid Machinery

基　　金：国家重点基础研究发展计划项目(2007CB714600)

摘　　要：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.

关 键 词：风力机 翼型 数值模拟 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]