不同范围进口畸变对亚声轴流压气机的影响  

Influence of inlet distortion of different ranges on subsonic axial-flow compressor

作　　者：张皓光[1] 安康[1] 谭锋[1] 楚武利[1,2] 吴艳辉 ZHANG Haoguang;AN Kang;TAN Feng;CHU Wuli;WU Yanhui(School of Power and Energy, Northwestern Polytechnical University, Xi＇an 710072, China;Collaborative Innovation Center for Advanced Aero-Engine, Beijing 100191, China)

机构地区：[1]西北工业大学动力与能源学院,西安710072 [2]先进航空发动机协同创新中心,北京100191

出　　处：《航空动力学报》2018年第4期776-784,共9页Journal of Aerospace Power

基　　金：国家自然科学基金重点项目(51536006);国家自然科学基金(51006084);航空科学基金(2014ZB53014);陕西省自然科学基金(2015JM5202)

摘　　要：借助于计算流体动力学商用软件NUMECA,通过使用10通道非定常数值模拟的方法,研究了不同范围的进口气流畸变对亚声速轴流压气机性能、稳定性和流场的影响。研究对象是西北工业大学单级轴流亚声压气机转子。不同范围的进口畸变是通过在进口径向段设置不同范围栏杆的方法产生的。结果表明:进口畸变不但降低了压气机转子的性能,而且使转子的稳定工作范围减少。畸变范围越大,上述现象越明显。通过详细分析内部流场表明:畸变后,由于部分通道叶顶间隙泄漏流溢流和附面层分离的影响,造成通道内严重的堵塞,进而诱发转子失速。畸变范围越大,影响也越大。By means of computational fluid dynamics commercial software NUMECA,the effects of inlet distortion of different range on the performance,stability and flow-field in a subsonic axial-flow compressor were investigated with ten-annulus unsteady numerical method.The research object was the single-stage subsonic axial-flow compressor rotor of Northwestern Polytechnical University.The inlet distortion of different range was generated by setting some barriers on the inlet ring surface.Results showed that inlet distortion didn＇t only degrade the performance of the compressor rotor,but also decreased the stability of the rotor.And the larger distortion range indicated the more obvious phenomenon mentioned above.The fundamental flow mechanism was obtained by detailed analysis of the flow-field in rotor passage.Inlet distortion led to serious blockage in tip blade passage and further induced rotor stall because of the influence of the tip clearance leakage flow and the separation of boundary layer in some tip blade suction.Like above,the larger distortion range meantthe more serious influence.

关 键 词：不同范围 进口畸变 轴流压气机 非定常 栏杆 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]