基于致动线模型的风电机组CFD仿真研究及验证

Flow Simulation of Wind Turbine Based on Actuator Line Model

文章采用计算流体力学(CFD)仿真方法,利用优化后的致动线(ALM)风电机组模型替代传统的实际叶片几何复杂模型,使用LES大涡湍流模型,对大型海上风电机组进行了不同风速下的基于CFD的风电机组性能仿真及验证。计算得到的推力、功率等参数与GH Bladed的计算结果进行对比,最大偏差不超过8%。文章验证了致动线模型在风电机组性能仿真的准确性,致动线模型大大减少了CFD仿真的资源需求,为后续大型海上风电场流场计算提供了一种新手段。

In the paper,the computational Fluid Dynamics is with the optimized actuation line model(ALM)instead of the complex traditional blade geometry model to simulate the flow field of large offshore wind turbines at different wind speeds.Combined with LES large eddy turbulence model,the thrust,power and other parameters are calculated to compare with the results of the professional calculation load software GH Bladed.With the deviation less than 8%,the accuracy of the actuation line model used to simplify the calculation of the wake of the large wind turbine was verified.It provides a new and innovative method which cost much less resource for wake flow calculation of large-scale offshore wind farms.