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为揭示叶栅等离子体流动控制的影响规律与作用机理,对等离子体气动激励前后高负荷压气机叶栅内部流动和拓扑结构进行了对比研究。结果表明:等离子体气动激励抑制叶栅流动分离的作用效果最明显的区域位于总压损失区域与主流区域的边界上;不同等离子体气动激励布局,对固壁面拓扑结构以及奇点总数的影响规律不同;吸力面流向激励通过增强附面层流体抵抗逆压梯度的能力,可以改善叶栅中间叶高流动特性;端壁横向激励通过抑制横向流动,抑制角区流动分离能力较强,并改变叶片展向的负荷分布;组合激励结合了吸力面流向激励和端壁横向激励的作用优势,因而提高叶栅气动性能、降低流动损失的效果最好。
In order to reveal the influence rule and action mechanism of cascade plasma flow control, the internal flow and topological structure of high load compressor cascade before and after plasma aerodynamic excitation were contrastively studied. The results show that plasma pneumatically excited cascade has the most obvious effect on the boundary between total pressure loss and the mainstream. The influence of plasma pneumatically excited layout on the topological structure of solid wall and the total number of singular points The lateral flow in the cascade can improve the high flow characteristics of the middle blade of the cascade by restraining the lateral flow and restraining the flow in the angular zone from being separated more strongly and the change of the blade The combination of the excitation and the lateral excitation of the end wall combines the advantages of the suction side and the lateral excitation of the end wall. Therefore, the aerodynamic performance of the cascade is improved and the flow loss is reduced.