摘要
通过非定常CFD方法模拟在大气边界层影响下2台串列布置的全尺寸5MW风力机组，研究使用尾迹的偏移效应及其对下游风力机的影响。结果表明：上游风力机偏航30°可有效提高风场全局发电量；速度场分析显示偏航风力机的尾迹在传播过程中逐渐扭曲，尽管尾迹中心偏移距离与经验模型吻合，但功率曲线表明该尾迹经验模型或低估了偏航尾迹对下游风力机的影响。
To reduce the wake interference, a control strategy based on yaw angle is adopted to skew the trajectory of upstream wake, thereby avoiding the downstream wind turbine. In this paper, a unsteady CFD simulation was adopted to simulate two tandem 5 MW wind turbines using the full rotor model in the atmospheric boundary layer condition, in order to investigate the wake deviation effect and its influence on the downstream wind turbine. The results showed that the total power of the wind farm increased when the upstream wind turbine applies a 30° yaw angle intentionally. According to analyses of the velocity field, the yawed wake shows a distortion gradually with propagating process. The deviation of the wake centerline has a good agreement with an empirical wake centerline model. However, the power curve reveals that that the influence of the yawed wake on the downstream wind turbine might be slightly underestimated in that wake models.
作者
缪维跑
李春
阳君
Miao Weipao1, Li Chun1,2, Yang Jun1,2(1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China ; 2. Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai 200093, China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2018年第9期2462-2469,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51176129)
上海市科委项目(13DZ2260900)
