摘要
提出了一种在翼型前缘前设置微小平板来抑制翼型上流动分离的新方法,并通过自主研发的计算软件UCFD对微小平板的流动控制进行了数值模拟.首先研究了在攻角一定的情况下微小平板的长度、安装角、相对翼型的安装位置等对抑制翼型上流动分离效果的影响;然后,采用正交优化方法,以翼型最大升阻比为优化目标,得到了该小平板最佳的长度、安装角和安装位置等.研究结果表明,微小平板的设置对抑制叶片上的流动分离具有显著效果.
A flow control method using a small plate in front of the leading edge of a NACA0012 airfoil to achieve good aerodynamic performance is proposed.Effectiveness of the proposed method is numerically studied by using a self-developed CFD program called UCFD.At a certain angle of attack,including of parameters including length,initial installation angle and installation position of the plate on the control of flow separation over the airfoil are investigated.The optimal length,initial installation angle and installation position of the small plate are obtained with an orthogonal optimization method that aims at maximizing the lift-to-drag ratio.Numerical results suggest that this passive flow control method can efficiently suppress flow separation.
出处
《上海大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第3期364-369,共6页
Journal of Shanghai University:Natural Science Edition
基金
国家自然科学基金资助项目(50836006
11202123)
关键词
数值模拟
流动分离
流动控制
气动性能
numerical simulation
flow separation
flow control
aerodynamic characteristics
