High-fidelity simulations of wake-to-wake interaction in an atmospheric boundary layer over a complex terrain
High-fidelity simulations of wake-to-wake interaction in an atmospheric boundary layer over a complex terrain
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对复杂地形上大气边界层中尾流与尾流相互作用的高保真模拟
DOI：
10.1088/1742-6596/2505/1/012033
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Jané-Ippel C
中科院分区：
文献类型：
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作者：
Jané-Ippel C
在这项工作中，风电场模拟器 WInc3D 用于对复杂地形上的流动进行大涡模拟 (LES)。通过与先前发表的风洞实验以及带和不带风力涡轮机的余弦平方山上的流动数值数据进行比较，对所使用的方法进行了验证。该研究的重点是两台风力涡轮机之间的尾流相互作用，其中一台位于山顶，另一台位于山顶下游 2.5 或 5 倍涡轮机直径处。结果表明，当风力涡轮机放置在山顶时，下游涡轮机的功率输出可以增加三倍。这是由于山体前半部分产生的有利压力梯度和山顶涡轮机的堵塞导致的加速流动所致。还发现，如果下游涡轮机距离上游涡轮机太远，则该效应不足以增强下游涡轮机的功率。
In this work, the wind farm simulator WInc3D is employed to perform large-eddy simulations (LES) of the flow over a complex terrain. The methodology used is validated through comparison with previously published wind tunnel experiments and numerical data for the flow over a cosine-squared hill with and without wind turbines. The study focuses on the wake-to-wake interaction between two wind turbines, with one on the hilltop and the other 2.5 or 5 turbine diameters downstream of the hilltop. The results indicate that the power output of the downstream turbine can be increased by a factor of three when a wind turbine is placed on the hilltop. This is explained by the accelerated flow that results from the favourable pressure gradient produced by the first half of the hill and the blockage of the hilltop turbine. It is also found that this effect is not sufficient to enhance the power of the downstream turbine if it is placed too far away from the upstream turbine.