为优化水平轴潮流能水轮机的阵列布局，本文采用计算流体力学（CFD）方法，研究2个串联布置的水平轴水轮机的纵向间距和叶尖速比对功率系数、推力系数及尾流的影响。结果显示：随着叶尖速比的增加，下游水轮机的功率系数先增大后减小，推力系数单调增加，且功率系数和推力系数随着纵向间距的增加而增大。尾流速度分析表明，叶尖速比的增加有助于加速下游水轮机尾流速度和湍动能的恢复。建议在布置串联水轮机组时，纵向间距应大于10倍叶轮直径，这将有助于提高水轮机阵列的发电效率和稳定性。
In order to optimize the array layout of horizontal axis tidal energy turbines, this paper adopts the computational fluid dynamics (CFD) method to study the effects of longitudinal spacing and blade tip speed ratio on power coefficient, thrust coefficient and wake flow of two horizontal axis turbines arranged in series. The results show that the power coefficient of the downstream turbine increases and then decreases, the thrust coefficient increases monotonically, and the power coefficient and thrust coefficient increase with the increase of the longitudinal spacing as the blade tip speed ratio increases. The wake velocity analysis shows that the increase of the tip speed ratio helps to accelerate the recovery of wake velocity and turbulent kinetic energy of the downstream turbine. It is recommended that the longitudinal spacing should be greater than 10 times the impeller diameter when arranging a tandem turbine set, which will help improve the power generation efficiency and stability of the turbine array.
2025,47(13): 132-137 收稿日期：2024-9-4
DOI：10.3404/j.issn.1672-7649.2025.13.023
分类号：TM73
基金项目：北京市教育委员会科研计划项目资助（KZ20231001720）
作者简介：李思睿(1999-),女,硕士研究生,研究方向为潮流能
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