中文摘要：

本文采用CFD软件FlowVision HPC对三叶片H型垂直轴风力机的二维非定常黏性流场进行了数值模拟研究。叶尖速比变化范围（定风速变转速）为1．86～2．57。计算的风能利用系数与三维实验数据进行了比较。讨论了单个叶片和三叶片载荷沿周向的变化规律，详细分析了一个旋转周期内二维非定常速度场和涡量场随相位角的变化规律。

英文摘要：

Two-dimensional unsteady viscous flow of H type vertical axial wind turbine with threes blades was numerically investigated by using a commercial CFD software FlowVision HPC. The range of blade tip speed ratios with the constant wind speed and varied rotating speed is from 1.86 to 2.57. The computed power coefficients were compared with experimental data from three-dimensional model. In addition, variation of loads of single and three blades with azimuth was investigated. The two-dimensional unsteady flow details were analyzed through velocity and vorticity contours with azimuth in one rotation cycle.