How far the wake of a wind farm can persist for?

作者：Guodan Dong, Zhaobin Li, J. L. Qin, Xiaolei Yang · 发表于：Theoretical and Applied Mechanics Letters · 年份：2021 · DOI：10.1016/j.taml.2021.100314 · 被引用次数：32 · 研究领域：Wind Energy Research and Development、Wind and Air Flow Studies、Icing and De-icing Technologies

With the increased penetration of wind energy in our nation’s energy portfolio, wind farms are placed in a way close to each other. Thus, their wakes have to be fully considered in the design and operation of a wind farm. In this study, we investigate the wake of a wind farm using large-eddy simulation with wind turbine rotor modelled by the actuator disk model. The simulated results show that the wake of a wind farm can persist for a long distance in its downstream. For the considered wind farm layout, the velocity in the wake recovers 95% of that of the undisturbed inflow at 55 rotor diameters downstream from its last row, suggesting that the wake of a wind farm should be fully considered in the optimal design and operation for its downstream wind farms.