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采用三维定常 N-S方程 ,对带有轴向斜槽和圆弧斜槽轮毂处理结构的压气机叶栅通道内湍流流场进行了数值模拟 ,计算中首次采用网格分区的方法 ,解决了因处理槽结构复杂而带来的网格系统难以建立的问题。通过对两种不同形式的处理槽内复杂的流动以及与叶栅通道端部气流相互作用的流场的分析 ,进一步揭示了传统的轴向斜槽处理轮毂和新型的圆弧斜槽处理轮毂的扩稳机理的联系与差别 ,为轴流压气机扩稳方法提供理论依据
The three-dimensional steady-state Navier-Stokes equations are used to simulate the turbulent flow field in the compressor cascade with axial chute and circular chute hub. The grid partitioning method is adopted for the first time in the calculation, Slot structure is complex and bring the grid system is difficult to establish the problem. Through the analysis of the complicated flow in two different types of treatment tanks and the flow field interacting with the airflow at the end of the cascade passageway, it further reveals that the traditional axial chute handling hub and the new type of circular chute handling hub Stabilization mechanism of the contact and differences for the expansion of axial flow compressor to provide a theoretical basis