The turbulent nature of the atmospheric boundary layer and its impact on the wind energy conversion process
The turbulent nature of the atmospheric boundary layer and its impact on the wind energy conversion process
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DOI：
10.1080/14685248.2012.696118
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发表时间：
2012-07
影响因子：
1.9
通讯作者：
M. Wächter;H. Heisselmann;M. Hölling;Allan Morales;P. Milan;T. Mücke;J. Peinke;N. Reinke;P. Rinn
中科院分区：
文献类型：
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作者：
M. Wächter;H. Heisselmann;M. Hölling;Allan Morales;P. Milan;T. Mücke;J. Peinke;N. Reinke;P. Rinn
风力涡轮机在大气边界层中工作，在那里它们暴露于湍流的大气流动中。由于风力发电机的响应时间通常在秒级范围内，因此受到湍流小尺度间歇特性的影响。因此，已知的小尺度均匀各向同性湍流的基本特征，特别是众所周知的间歇性问题，对风能转换过程具有重要影响。本文报道了大气流动的小尺度间歇特性及其对风能转换过程影响的基础研究成果。对风数据的分析表明，风的波动具有很强的间歇性统计。为了实现数值模拟，提出了一种数据驱动的叠加模型。对于间歇性流动的实验再现和调整，提出了所谓的主动网格设置。它能够在较小的实验室尺度上产生可重复的大气流动特性……
Wind turbines operate in the atmospheric boundary layer, where they are exposed to turbulent atmospheric flows. As the response time of wind turbines is typically in the range of seconds, they are affected by the small-scale intermittent properties of turbulent wind. Consequently, basic features that are known for small-scale homogeneous isotropic turbulence, in particular the well-known intermittency problem, have an important impact on the wind energy conversion process. We report on basic research results concerning the small-scale intermittent properties of atmospheric flows and their impact on the wind energy conversion process. The analysis of wind data shows strong intermittent statistics of wind fluctuations. To achieve numerical modeling, a data-driven superposition model is proposed. For the experimental reproduction and adjustment of intermittent flows, the so-called active grid setup is presented. Its ability to generate reproducible properties of atmospheric flows on the smaller scales of lab...