4.5m直径风力机模型气动实验方法

The method of aerodynamic experiment for a wind turbine model with the diameter of 4.5 m

MEXICO(model experiment in controlled conditions)实验是由欧盟资助的一项大型风力机实验.作者对该风力机旋转叶片表面压力和三维PIV(particle image velocimetry)流场测量方法进行详细介绍,给出了无偏航工况下叶片上5个测试断面的表面压力系数分布,并计算得到该工况下叶轮所受轴向力和切向力,其结果与叶素动量法获得的计算结果吻合很好.将偏航工况风轮上、下游的三维流场测量数据与促动线方法的计算结果进行对比分析,两者流场变化趋势一致,实验结果可靠.

MEXICO （ ment project support measured during the model experiment in controlled conditions） is a large scale wind turbine experied by EFP 5. The pressure on the rotational blade and the flow fields were experiment. The measurement method and operation point were introduced in detail. The distribution of pressure coefficient on five sections at the non-yawed condition was given, from which, the axial and tangential force of the blade were calculated, and the results have good agreement with the values calculated by BEM （blade element momentum） method. Under yawed condition, 3D flow fields along the tunnel wind were compared with the calculated data by using of actual line method. The comparisons show that the velocity of in axial, radial and tangential direction and the variation tends extracted from experiment accord well with the simulation results, the experiment data is reliable.