风力机翼型气动力特性模拟精度的影响因素

本文以风力机翼型的气动力特性为研究对象，分别建立了多面体和六面体两种体网格模型，并分别在S-A和SST k-ω湍流模型下进行CFD模拟，还与风洞试验结果进行对比。计算结果表明SST k-ω湍流模型的计算结果相对于S-A模型与风洞试验值更为接近，六面体网格模型的计算结果相对于多面体网格模型与风洞试验值更为接近，并且所划分的网格质量越好CFD模拟得越准确。将等截面模型的风洞实验结果或CFD模拟结果应用于真实叶片的气动力特性计算是比较合理的。

Factors of Simulation Accuracy for Wind Turbine Airfoil Aerodynamic Characteristics

In this paper, we respectively established the polyhedral and hexahedral volume mesh models, and used CFD method to calculate the aerodynamic characteristics of a wind turbine airfoil under the S-A and SST k-ω turbulence model.The calculated result was compared with wind tunnel test data.It was discovered that the calculation results under SST k-ω turbulence model were more close to the wind tunnel test than S-A turbulence model.And the results showed that choosing better quality hexahedral mesh could get more accurate simulated result than polyhedral mesh.Wind tunnel test or CFD method could reasonably be applied to the aerodynamic characteristics calculation for a real wind turbine airfoil.