基于k-ω SST湍流模型,对安装不同间距z和安装角αvg涡流发生器（VGs）的DU91-W2-250风力机翼段的动态失速过程进行数值研究。翼段做典型的正弦俯仰振荡运动,探究该过程中VGs安装参数对风力机翼段流动控制效果的影响。研究结果表明：改变z对气动影响非常小,改变αvg的影响较大;当z=6~8mm,αvg=13.4°~16.4°时VGs改善翼段气动性能的效果较好;流向涡强度是影响VGs流动控制效果的一个主要因素。
Abstract
Based on the k-ω SST turbulence model, the dynamic stall process of DU91-W2-250 airfoil segment with vortex generators（VGs） installedat different spacing（z） and installation angle（αvg） is numerically studied. The airfoil segment performs a typical sinusoidal pitch oscillation motion, and the influence of the VGs installation parameters on the flow control effect of the airfoil segment is investigated. It is found that changing the z has little effect on the aerodynamic performance, while changing the αvg has great effect; when z is from 6 to 8 mm,and αvg is from 13.4° to 16.4°, the VGs have a good effect on improving the aerodynamic performance of the airfoil segment. The strength of streamwise vortices is a major factor affecting the flow control effect of VGs.
关键词
风力机 /
数值模拟 /
流动控制 /
涡流发生器 /
安装间距 /
安装角
Key words
wind turbines /
numerical simulation /
flow control /
vortex generators /
installation spacing /
installation angle
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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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