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为提高流动控制能力,基于高负荷压气机叶栅的流场特性和等离子体气动激励特性,对等离子体流动控制的激励布局进行优化,通过选取典型激励布局,实验揭示了不同因素对等离子体气动激励抑制叶栅流动分离的影响.结果表明:吸力面激励布局中,靠近前缘流向激励的作用效果强于展向激励和尾缘激励,沿流向分布多组电极的激励效果最佳;端壁激励布局中,横向激励的作用效果明显强于流向激励;组合激励布局中,基于端壁横向激励和吸力面流向激励的组合布局的激励效果最佳.等离子体气动激励的作用效果随着激励电压的增大而增强,随着攻角的增大其作用效果先增强后变弱;变定常激励为非定常激励,通过耦合流动的不稳定性,可以提高等离子体气动激励流动控制效果.
In order to improve the flow control ability, the excitation layout of the plasma flow control is optimized based on the flow field characteristics of the high-load compressor cascade and the plasma aerodynamic excitation characteristics. By selecting the typical excitation layout, the experiment reveals that different factors affect the plasma aerodynamic The results show that the effect of excitation near the leading edge is stronger than that of the directional excitation and trailing edge excitation in the suction surface excitation layout, and the excitation effect of multiple groups of electrodes distributed along the flow direction is the best. In the excitation layout, the effect of lateral excitation is obviously stronger than that of the flow excitation.In the combined excitation layout, the combination of the lateral excitation of the end wall and the suction-side excitation has the best excitation effect.The effect of the plasma aerodynamic excitation increases with the excitation voltage , And the effect becomes weaker at first with the increase of angle of attack. Variable constant excitation is unsteady excitation. By controlling the instability of coupled flow, the control effect of plasma aerodynamic excitation flow can be improved.