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为了解在处理机匣作用下的压气机转子失速点流动,采用非定常模拟方法对跨声轴流压气机转子在带气室斜槽处理机匣情形下的流动进行了模拟研究,获得了高、低转速下的转子特性,并针对近失速点流场进行了分析.结果表明,在处理机匣的作用下,转子失速的主要产生原因与实壁情形不同.在失速点,处理机匣有效地抑制了叶尖泄漏流的负面作用,但由于不能更多地吸纳叶尖的低能流体,使得叶片吸力面附面层中向叶尖迁移的低流向动量流体堆积于叶尖吸力面尾缘处,形成严重的流动堵塞,从而导致转子叶尖失速.
In order to understand the flow at stall point of the compressor rotor under the action of the receiver, the unsteady simulation method was used to simulate the flow of the transonic axial compressor rotor under the condition of the casing with air chamber chute. , The rotor characteristics at low rotation speed are analyzed and the flow field at near stall point is analyzed.The results show that the main cause of rotor stall is different from the solid wall under the action of casing.Through the stall point, The negative effect of tip leakage flow is restrained. However, since the low energy fluid at the tip can not be absorbed more, the low flow momentum fluid migrating toward the tip in the blade suction surface coating accumulates on the trailing edge of the tip suction surface , Creating a serious flow blockage, resulting in stalling rotor tip.