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针对风电场空气动力学计算中致动盘模型参考风速难以确定的问题,本文提出了一种根据风轮平均风速计算致动盘动量源项的方法.该模型使用体积修正因子对致动盘区域动量源项进行修正,降低致动盘区域网格辨识误差对模拟的影响;结合拓展κ-ε湍流模型,改进ε源项参数的分布规律,提高模型对于风电场尾流模拟可靠性.Nibe-B风力机和Horns I近海风场的尾流计算结果表明所提出的模型能够较为准确地模拟风电场空气动力场分布.“,”Due to difficulty of estimating the reference wind speed for wake modeling in wind farm,this paper proposes a new method to calculate the momentum source based on the rotor average wind speed.The proposed model applies volume correction factor to reduce the influence of the mesh recognition of disk regions.The coefficient C4ε of the turbulent source term is also discussed and modified to improve the simulation accuracy.To validate the model,results are presented for the Nibe-B wind turbine and Horns Rev I offshore wind farm and show a good agreement with the measurements.