风力机叶型增升及叶尖流动控制研究

白亚磊; 马兴宇; 明晓

doi:10.3879/j.issn.1000-0887.2011.07.002

风力机叶型增升及叶尖流动控制研究

doi: 10.3879/j.issn.1000-0887.2011.07.002

南京航空航天大学空气动力学系, 南京 210016

基金项目: 国家“973”基金资助项目(2007CB714600)

详细信息

作者简介:
白亚磊(1982- ),男,河南南阳人,博士(E-mail:by@lnuaa.edu.cn);明晓(1944- ),男,武汉人,教授,博士生导师(联系人.Tel:+86-25-84892651;E-mail:mingam@nuaa.edu.cn).

中图分类号: O354.1
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出版历程
- 收稿日期: 2011-02-21
- 修回日期: 2011-05-16
- 刊出日期: 2011-07-15

Lift Enhancement of the Airfoil and Tip Flow Control for Wind Turbine

Department of Aerodynamics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China

摘要

摘要: 研究了两种改善风力机叶型气动性能的流动控制技术，分别对风力机专用S809翼型和较大升阻比的FX 60-100翼型进行应用研究．首先，通过在叶型前缘加装流动偏转器，研究流动偏转器对叶型流动分离的控制效果．并采用多岛基因算法，对流动偏转器进行多参数优化．结果表明：流动偏转器可以有效控制叶型的失速特性，推迟失速攻角和增加升力；基因优化算法能更大地提升流动偏转器的控制效果．其次，基于对风力机叶尖旋涡和尾涡特征以及叶片表面压力分布的分析，在叶片尖部加装不同倾斜角的旋涡扩散器控制叶尖涡．结果表明：涡扩散器能够提高叶尖涡涡核的总压，削弱其旋涡强度，使风力机尾流旋涡耗散更快，从而可以减小噪声，提高叶片效率．
- 流动控制 /
- 流动分离 /
- 流动偏转器 /
- 多岛基因算法 /
- 叶尖涡 /
- 涡扩散器
Abstract: Two techniques that miprove the aerodynamic performance of wind turbine airfoils were described. The airfoil S809, often used forwind turbine design, and the airfoil FX60-100, having higher lift-dragratio, were selected to verify the flow control techniques. The flow deflector, fixed at the leadingedge, was employed to control the boundary layer separation on the a irfoil at high angle of attack. The multiisland genetic algorithm was used to optimize the parameters of the flow deflector. The results indicate that the flow deflector can suppress the flow separation, delay stall and enhance the lift. In the second part of this paper, the characteristics o f the blade tipvortex, wake vortex and the surface pressured istributions of blades are analyzed. The vortex diffuser, set up at the blade tip, was employed to control the blade tipvortex. The results show that the vortex diffuser can increase the total pressure coefficient of the core of the vortex, decrease the strength of blade tipvortex, lower the noise and improve the efficiency of the blade.
- flow control /
- flow separation /
- flow deflector /
- multi-is land genetic algorithm /
- blade tipvortex /
- vortex diffuser

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参考文献(14)

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