Large-eddy simulation of offshore wind farm
Large-eddy simulation of offshore wind farm
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DOI：
10.1063/1.4863096
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发表时间：
2014-02
影响因子：
4.6
通讯作者：
Di Yang;C. Meneveau;Lian Shen
中科院分区：
文献类型：
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作者：
Di Yang;C. Meneveau;Lian Shen
开发了一种用于海上风电场模拟的混合数值能力，其中对风湍流进行大涡模拟，并采用基于势流的方法对海洋波浪场进行模拟。风和波浪模拟是动态耦合的。风力涡轮机对风场的影响由致动器盘模型表示。本研究重点关注风海效应，涡轮机运动被视为可忽略不计。研究中考虑了各种完全开发和获取限制的风海条件和涡轮机间距。对模拟结果进行统计分析，重点关注平均风廓线、风场动能收支和风机功率提取率。结果表明，波浪对风电场性能有显着影响。风海充分发育条件下，风力发电机组获得比取力条件下更高的风电提取率。
A hybrid numerical capability is developed for the simulation of offshore wind farms, in which large-eddy simulation is performed for the wind turbulence, and a potential flow based method is used for the simulation of the ocean wave field. The wind and wave simulations are dynamically coupled. The effect of wind turbines on the wind field is represented by an actuator disk model. This study focuses on the effect of wind-seas, and the turbine motion is treated as negligibly small. A variety of fully-developed and fetch-limited wind-sea conditions and turbine spacings are considered in the study. Statistical analyses are performed for the simulation results, with a focus on the mean wind profile, kinetic energy budget in the wind field, and the wind turbine power extraction rate. The results indicate that the waves have appreciable effect on the wind farm performance. The wind turbines obtain a higher wind power extraction rate under the fully developed wind-sea condition compared with that under the fetch...