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Karman vortex and turbulent wake generation by wind park piles

机译：风力发电堆产生的卡门涡和湍流尾流

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摘要

Observational evidence of turbulent wakes behind wind parks' piles motivated a series of numerical experiments, aiming to identify the dynamic regimes associated with wakes' generation in tidal basins. We demonstrate that the obstacles such as piles of wind parks give rise to vortices similar to the known Karman vortices which affect substantially the turbulent kinetic energy. The latter can be considered as the agent enhancing sediment remobilization from the ocean bottom, thus making wakes well visible in satellite data. The temporal and spatial variability of studied processes is analyzed under stationary and nonstationary conditions. The dependence of a vortex generation and evolution upon the environmental conditions is also studied, which demonstrates a large variety of appearances of turbulent wakes. The comparison between simulations using a suspended sediment model and satellite images demonstrated that the model is capable to realistically simulate sediment wakes observed in remote sensing data.
机译：风电场堆后的湍流尾流的观测证据推动了一系列数值实验，旨在识别与潮汐盆地中的尾流产生相关的动态状态。我们证明，障碍物（如风电场堆）会产生类似于已知的卡曼涡流的涡流，这些涡流实质上会影响湍流动能。后者可以被认为是促进从海底进行沉积物迁移的媒介，因此在卫星数据中很容易看到苏醒。在平稳和非平稳条件下，对所研究过程的时间和空间变异性进行了分析。还研究了涡流的产生和演化对环境条件的依赖性，这证明了湍流尾流的各种出现。使用悬浮泥沙模型和卫星图像进行的模拟之间的比较表明，该模型能够真实地模拟在遥感数据中观察到的泥沙唤醒。

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