利用CFD软件Fluent 16.0,对直叶片H-Darrieus型水轮机模拟计算叶片桨距角为4°、8°、12°、-4°、-8°、-12°的定桨距情况,以及叶片按正弦模式及半正弦模式主动变桨,变桨幅值为4°、8°、12°的情况,重点对比两种桨距策略下水轮机能量利用率。结果表明,与正弦模式变桨水轮机相比,定桨距水轮机在实际应用中更具优势。半正弦模式变桨水轮机能量利用率提升显著,应重视定桨距策略在实际中的应用。
Abstract
In this paper, the CFD software ANSYS Fluent 16.0 is used to simulate a straight-bladed H-Darrieus turbine with preset fixed pitch angle of 4°,8°,12°, -4°,-8° and -12°, respectively, as well as active pitched blades in sinusoidal mode and half-sinusoidal mode, with the pitch amplitude of 4°,8° and 12°, with a focus on comparing the energy efficiency of the turbine under the two pitch strategies. The results show that compared with the sinusoidal-pitch turbine, the fixed-pitch turbine has more advantages in practical applications; the half-sinusoidal-pitch turbine has a significant improvement in energy efficiency; and the application of the fixed-pitch strategy should be emphasized in practical.
关键词
潮流能 /
H-Darrieus水轮机 /
数值模拟 /
自启动 /
定桨距 /
主动变桨
Key words
tidal energy /
H-Darrieus turbine /
numerical simulation /
self-starting /
fixed pitch strategy /
active pitch strategy
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基金
中海石油（中国）有限公司科技课题“海洋能开发利用关键技术”（KJZX-2022-12-XNY-0900）
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