考虑风剪切效应,提出一种高斯形状的三维尾流模型（3DG-k）。该模型定义尾流半径rw等于两倍的高斯特征参数σ,并与物理尾流边界的扩展系数k建立联系,来描述风轮后尾流边界的演变规律。通过GH风洞实验数据、Nibe风电场实测数据、Vestas V80-2 MW风力机大涡模拟数据,对3DG-k模型、Jensen模型、三维高斯模型（3DG）及三维椭圆高斯模型（3DEG）进行对比分析。研究结果显示,3DG-k模型在3种案例中均显示出最佳的预测精度,更适用于工程实际应用。
Abstract
A Gaussian shape three-dimensional wake model（3DG-k） is proposed considering the wind shear effect. The model defines the wake radius rw equal to twice the Gaussian characteristic parameter σ of the physical wake boundary to describe the evolution law of the wake boundary after the wind turbine. The 3DG-k model, Jensen model, three-dimensional Gaussian model （3DG） and three-dimensional elliptical Gaussian model （3DEG） are compared and analyzed by GH wind tunnel experiment data, actual measurement data from Nibe wind farm and large eddy simulation data from Vestas V80-2 MW wind turbine. The results show that the 3DG-k model shows the best prediction accuracy in all three cases and is more suitable for practical engineering applications.
关键词
风力机 /
三维尾流模型 /
风剪切效应 /
尾流效应
Key words
wind turbine /
three-dimensional wake model /
wind shear effect /
wake effect
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基金
国家自然科学基金（51876054; 11502070）; 南通市民生科技重点项目（MS22019018）
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