How far the wake of a wind farm can persist for? |
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作者姓名: | Guodan Dong Zhaobin Li Jianhua Qin Xiaolei Yang |
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作者单位: | The State Key Laboratory of Nonlinear Mechanics;School of Engineering Sciences |
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基金项目: | supported by the National Natural Science Foundation of China(Nos.11988102,12172360);Institute of Mechanics and Chinese Academy of Sciences。 |
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摘 要: | 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.
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关 键 词: | Wind farm wake Large-eddy simulation Actuator disk Wind turbine wake |
收稿时间: | 29 November 2021 |
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