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建立了3D垂直轴风力机模型,应用FLUENT软件求解三维非定常不可压缩N-S方程和RNGκ-ε湍流模型,采用SIMPLE算法并结合滑动网格技术,数值模拟了安装角变化下垂直轴风力机的三维非定常流场,分析了不同时刻的速度、涡量分布、风力机总转矩的变化规律及风能利用系数。结果表明,计算区域流场复杂,垂直轴风力机的转矩呈周期性变化,风能利用系数随安装角变化而变化。
A 3D vertical axis wind turbine model was established. The three-dimensional unsteady incompressible Navier-Stokes equations and the RNGκ-ε turbulence model were solved by using FLUENT software. The SIMPLE algorithm and the sliding mesh technique were used to simulate the three-dimensional Unsteady flow field, the variation of velocity, vorticity distribution, total torque of wind turbines and wind energy utilization coefficient are analyzed. The results show that the flow field in the calculation area is complex, the torque of the vertical axis wind turbine changes cyclically, and the wind energy utilization coefficient changes with the installation angle.