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采用全三维数值方法研究了轴向倾斜缝机匣处理对某单级跨声轴流压气机性能的影响.数值结果表明:机匣处理不仅扩宽压气机稳定工作范围,而且还略微提高了单级跨声轴流压气机峰值效率.通过详细分析压气机转子内部流场,揭示了该机匣处理对该单级跨声轴流压气机性能及流场影响的机理,在倾斜缝中形成的回流作用下,使叶顶吸力面气流分离的起始位置向下游推移,并削弱了分离流与叶顶间隙泄漏流相互作用造成的恶劣影响,提高了叶顶通道的流通能力,进而推迟压气机失速的发生.
The full three-dimensional numerical method was used to study the effect of axial inclined slotted casing treatment on the performance of a single-stage transonic axial compressor.The numerical results show that the casing treatment not only expands the stable working range of the compressor, but also slightly increases the single Level transonic axial compressor.A detailed analysis of the flow field inside the compressor rotor reveals the mechanism of the casing treatment on the performance and flow field of the single-stage transonic axial compressor. The formation of Under the action of backflow, the starting position of the air flow separation on the suction side of the tip is pushed downstream, and the adverse influence caused by the interaction between the split flow and the tip leakage flow is weakened, and the flow capacity of the tip passage is increased, Stall occurred.