沙尘颗粒影响翼型气动特性的实验研究

马高生; 王旭哲; 王燕; 孔令埵; 骆冯洋

doi:10.19912/j.0254-0096.tynxb.2025-0445

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沙尘颗粒影响翼型气动特性的实验研究

更新时间：2026-10-15

- 沙尘颗粒影响翼型气动特性的实验研究
- Vol. 47, Issue 9, Pages: 662-671(2026)
- 作者机构：
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- DOI：10.19912/j.0254-0096.tynxb.2025-0445
  CLC： TK83
- Online First：10 October 2026，
  
  Published：2026
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马高生, 王旭哲, 王燕, et al. 沙尘颗粒影响翼型气动特性的实验研究[J]. 2026, 47(9): 662-671.
DOI：

马高生, 王旭哲, 王燕, et al. 沙尘颗粒影响翼型气动特性的实验研究[J]. 2026, 47(9): 662-671. DOI： 10.19912/j.0254-0096.tynxb.2025-0445.

摘要

依托风洞实验针对风沙环境中风力机翼型S809的气动性能展开研究

分析不同颗粒粒径斯托克斯数（St）和沙尘浓度条件下的升/阻力系数变化、流场特征及沙尘颗粒的动力学行为。实验结果表明：1）不同St工况下升力系数随St的增大呈先增大后减小的趋势

阻力系数缓慢上升;20°与24°攻角下随St的增大速度分布逐步增强

涡结构发生改变

且分离点随St的增大向尾缘迁移;2）不同沙尘浓度条件下在攻角20°~28°范围中升力系数随沙尘浓度的增大而增大。沙尘浓度的增大使得吸力面速度降低

20°与24°攻角下分离点随浓度的增大向前缘移动;3）沙尘浓度的增大导致颗粒聚集现象逐渐向翼型尾缘区域转移;St增大导致沙尘颗粒在翼型分离涡区域数量减小;对比不同攻角下的颗粒分布特征

攻角增大使得沙尘颗粒逐渐在翼型前缘聚集。

Abstract

The study of aerodynamic characteristics for airfoils in sand-laden environments predominantly employs numerical simulation methods

yet inconsistencies in models and assumptions during simulations have led to divergent conclusions regarding sand particle effects on airfoil performance. This paper experimentally investigates the aerodynamic behavior of the S809 wind turbine airfoil in sandy conditions through wind tunnel testing

focusing on lift/drag coefficient variations

flow field patterns

and particle dynamics under different sand particle sizes （characterized by Stokes number

） and concentration levels. Key experimental findings reveal： 1） Under varying St conditions

the lift coefficient initially increases then decreases with rising values while the drag coefficient shows gradual growth; at 20° and 24° angles of attack

enhanced velocity distribution emerges with increasing

accompanied by modified vortex structures and downstream migration of separation points toward the trailing edge. 2） Within the 20°-28° angle of attack range

lift coefficients exhibit a positive correlation with dust concentration under varied concentration conditions

while elevated concentrations reduce suction surface velocity and drive upstream displacement of separation points toward the leading edge at 20° and 24° angles of attack. 3） Higher dust concentrations shift particle accumulation toward the airfoil’s trailing edge region

whereas increased values reduce particle density within vortex separation zones; comparative analysis of particle distribution across attack angles demonstrates that steeper angles progressively concentrate sand particles near the airfoil’s leading edge.

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