The flow speedup generated by windbreaks can be used to increase the power production of wind turbines. However, due to the increased drag imposed by the windbreaks, their use in large wind turbine arrays has been questioned. We use large eddy simulations to show that windbreaks can increase the power production of large wind farms. A crucial finding is that windbreaks in a wind farm should be much lower than in the single-turbine case. In fact, the optimal windbreak for an isolated turbine can reduce wind-farm performance. The optimal windbreak height in a wind farm namely depends on the right balance between the flow speedup over the windbreak and the drag imposed by all windbreaks in the farm. The increased performance is a result of the favorable total pressure flux created by the windbreaks.

中文翻译：

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使用防风林提高风电场性能

防风林产生的流量加速可用于增加风力涡轮机的发电量。然而，由于防风林施加的阻力增加，它们在大型风力涡轮机阵列中的使用受到质疑。我们使用大涡模拟来表明防风林可以增加大型风电场的发电量。一个重要的发现是风电场中的防风林应该比单涡轮机情况下的要低得多。事实上，孤立涡轮机的最佳防风林会降低风电场的性能。风电场中的最佳防风林高度取决于防风林上的流速加速与风电场中所有防风林施加的阻力之间的适当平衡。性能的提高是防风林产生的有利总压力通量的结果。