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基于CFD模拟计算,分别用多参考坐标系法(Multiple Reference Frame,MRF)和滑移网格法(Sliding Mesh,SM)对导流型垂直轴风力机进行数值模拟,给出每种方法在工程应用中所适用的范围与场合。在对该种风力机整体外特性的计算上,两种方法对其总扭矩等性能有着相似的结论,周期较短的MRF法更为适合;在局部流动内特性上,SM法作为一种非定常的计算方法,能相对准确的表达出风轮的内特性参数随时间及空间的变化,对于此方面的计算,物理意义较合理的SM法更为适合。
Based on the CFD simulation calculation, the multi-reference frame method (MRF) and Sliding Mesh (SM) are used to simulate the vertical-axis wind turbine with diversion. Application of the scope and occasions. In the calculation of the overall external characteristics of the wind turbine, the two methods have similar conclusions about the total torque and other properties, and the MRF method with shorter period is more suitable. On the internal flow characteristics, The constant calculation method can relatively accurately express the change of the internal characteristic parameters of the rotor with time and space. For the calculation in this respect, the SM method with more reasonable physical meaning is more suitable.