实验流体力学2011，Vol.25Issue(4)：9-14,6.
介质阻挡放电等离子体对翼型流动分离控制的实验研究
Investigation of flow separation control on an airfoil using DBD plasma actuators
王勋年 1王万波 2黄勇 2张鑫 2黄宗波2
作者信息
- 1. 西北工业大学航空学院,西安710072
- 2. 中国空气动力研究与发展中心,四川绵阳621000
- 折叠
摘要
Abstract
Influence of plasma actuators on the flow separation control of NACA 0015 airfoil was investigated in an open-circuit low-speed wind tunnel.Particle Image Velocimetry(PIV)technology was applied to visualize the modification of the flow structure over the airfoil by the plasma actuators.Lift and drag were measured by a five-component strain gauge balance to investigate the separation control effect of the actuator voltage and excitation frequency.The results show that the leading-edge plasma actuators are effective in controlling the flow separation over the airfoil at low wind speeds.The maximum lift coefficient and stall angle are increased by 11%and 6 deg respectively at the free-stream velocity of 20m/s.However,at a given flow state,there exists threshold values for both the actuator voltage and excitation frequency on the actuators.The threshold values are different with the changing attack angles.At the higher attack angles,the plasma actuator's authority must be increased due to the much stronger flow separation on the airfoil.关键词
等离子体/流动控制/激励器/流动分离Key words
plasma/ flow control / actuator/ flow separation分类
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王勋年,王万波,黄勇,张鑫,黄宗波..介质阻挡放电等离子体对翼型流动分离控制的实验研究[J].实验流体力学,2011,25(4):9-14,6.
