中文摘要：

利用FLUENT商用计算流体软件对风力机叶尖加小翼后的性能进行了数值模拟，计算中基于N-S方程采用三维稳态隐式解法；湍流模型选择k-ωSST模型；离散方法为二阶迎风格式；压力-速度耦合采用SIMPLE算法。探索了小翼的不同参数尺寸对风力机性能，特别是对动力放大特性的影响；将模拟计算与实验结果进行了比较，得出小翼形状和参数对风力机动力放大的变化规律，表明本计算模拟方法对叶尖加小翼风力机动力放大特性研究是正确可行的。

英文摘要：

The performance of horizontal axis wind turbine and horizontal axis wind turbine with a tip vane by CFD were simulated. During the calculation, 3-D, steady, implicit solvers were chosen. Turbulence model is k-ω SST. Diseretization is second order upwind. Pressure-velocity coupling is a typical SIMPLE scheme. The power augmentation were simulated and calculated on effects by tip vane of all kinds of parameters and sizes. The computational results with the experiment results were compared and changing regularity of power augmentation of a wind turbine with a tip vane was educed, meantime, results indicated that the method of calculation and simulation to wind turbine with a tip vane is available.