屋顶H型垂直轴风力机气动性能CFD计算方法研究
梅毅,曲建俊
摘要(Abstract)：
以一种屋顶H型垂直轴风力机为研究对象,采用计算流体动力学方法模拟了风轮在10 m/s风速下的功率系数曲线。提出以计算效率和精度作为功率系数数值计算方法适用性的评价指标,通过对比功率系数曲线的计算结果和实验数据,研究了湍流模型、网格单元形状和时间步长对功率系数计算适用性的影响。结果表明,计算H型垂直轴风力机功率系数时,采用SST k-ω湍流模型、四边形网格划分计算域,设置时间步长为风轮旋转0.5°所需时间,可获得较高的计算效率和计算精度。
关键词(KeyWords)： 屋顶H型垂直轴风力机;计算流体动力学;功率系数;湍流模型;时间步长
基金项目(Foundation):
作者(Author): 梅毅,曲建俊
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