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采用Fluent 6.3软件,并结合SSTk-ω模型对1.2 MW风力发电机旋转风轮流场进行了数值模拟,对设计转速为18.44 r/min工况下三叶片风轮与相同叶片单叶片、双叶片以及四叶片风轮流场的输出功率与湍动能进行了比较,并分析了风轮旋转对叶片间流动的影响.结果表明:旋转上游叶片在转动过程中会发生附着涡的脱落,导致旋转下游叶片周围流场的环境发生变化,对叶片转矩及输出功率造成较大影响.在翼型优化中,考虑叶片间作用可以提高风力发电机的效率.
The flow field of 1.2 MW wind turbine rotating wind turbine was numerically simulated with Fluent 6.3 software and SSTk-ω model. The rotor speed of the three-bladed wind turbine with the same blade single blade and double blade at the design speed of 18.44 r / min The output power and turbulent kinetic energy of the flow field of the four-bladed wind turbine are compared and the influence of the rotation of the wind turbine on the flow between the blades is analyzed.The results show that the attached vortex shedding occurs during the rotation of the rotating upstream blade, The environment of the flow field changes, which has a great influence on the torque and output power of the blade.In the airfoil optimization, the efficiency of the wind turbine can be improved by considering the action of the blades.