目前模型未充分考虑大气稳定度的影响,针对该问题,在不同大气稳定度下,通过建立风电场边界层的动量平衡关系和揭示风电场的流动不均匀性,提出一种适用于不同大气稳定度的风电场等效粗糙度模型。采用大涡模拟方法对所提模型进行验证,结果显示该方法能有效评估大气稳定度对风电场流动不均匀性以及等效粗糙度的影响,所得等效粗糙度平均误差约10%。
Abstract
Current wind farm effective roughness models do not fully consider the influence of atmospheric stabilities. To address this problem, an effective roughness model for wind farms with different atmospheric stabilities is proposed by establishing the momentum balance relationship in the wind farm boundary layer and revealing the flow inhomogeneity of wind farms under different atmospheric stabilities. The proposed model is validated by using the large eddy simulation method, and the results show that the proposed model can effectively evaluate the effect of atmospheric stabilities on the flow inhomogeneity and the wind farm effective roughness, and the average error of the obtained effective roughness is about 10%.
关键词
风电场 /
大气边界层 /
尾流 /
大涡数值模拟 /
等效粗糙度模型
Key words
wind farm /
atmospheric boundary layer /
wakes /
large eddy simulation /
effective roughness model
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基金
国家自然科学基金（12172128）; 中国长江三峡集团有限公司科研项目（202103368）
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