为了研究三维旋转风轮的尾流流动情况，利用多重参考模型( moving reference frame，MRF)数值模拟给定风机的尾流情况，针对风机在不同的入口风速和桨距角的情况下，对其尾流流场的速度和压力分布进行了研究，发现风场的速度、压力分布及尾流、入口风速和桨距角变化对整个流场的影响与实际情况一致。该方法能预测风机运行性能和尾流湍流情况，并达到仿真风力发电机组气动流场的目的，用数值模拟的方法部分取代模型机的实验，既可缩短实验时间、节约实验成本、缩短研发周期，又能为机组运行提供可靠的建议。%In order to study the wake flow of 3D rotating rotor, this paper numerically simulated the wake of a given fan by using moving reference frame ( MRF) . The velocity and pressure distribution of wake flow field under different inlet wind velocity and pitch angles were studied for wind turbine generator. It is found that the influences of wind field velocity, pressure distribution, wake, inlet wind velocity and pitch angles changes on the whole flow field are consistent with the actual situation. This method can forecast the running performance and wake turbulence of wind turbine, and achieve the simulation of the aerodynamic flow field of wind turbine. Using numerical simulation method to replace part of model machine experiments can shorten the experiment time, save the experiment cost, shorten the development cycle, and can provide reliable suggestions for the operation of units.
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