对转压气机内叶排干涉效应的数值分析  

Further Study on Blade Interactions in Counter-Rotating Axial Flow Compressor

作　　者：高丽敏[1,2] 苗芳[1,2] 李瑞宇[1,2] 刘波[1,2] 

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：《工程热物理学报》2015年第1期46-49,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51076132)

摘　　要：本文数值模拟了设计工况下对转压气机内部非定常流场,分析了对转压气机内导叶与转子之间以及转子与转子之间的干涉效应对整机的非定常影响。结果表明,两排转子交界面上的非定常流量波动最剧烈,说明两排转子之间动/动干涉的强度大于导叶与转子之间的动/静以及静/动干涉强度;通过典型叶高处的非定常流场分析,结合不同叶排进口处的非定常脉动强度分析,对转压气机内部的设计和流动机理有了深入认识,各排转子进口处的非定常脉动强度沿着流向增强,由于出口导叶与上游转子间的轴向间隙特别小,出口导叶进口处非定常脉动最为强烈。The unsteady flow field of the counter-rotating axial flow compressor(CRAC) under design condition was time accurately simulated,the unsteady effects between every rotor and guide vane were analyzed,which contains the guide vane/rotor interaction and rotor/rotor interaction.The results indicate that the unsteady mass flow on the interface of two rotors fluctuates stronger than the other two interfaces,so the unsteady interaction between two rotors is the strongest in the CRAC.The unsteady flow field at typical height was analyzed;combined with the unsteady fluctuation intensity,the further design and mechanism of the CRAC was investigated.The unsteady fluctuation intensity increases with the flow direction,the axial distance between the second rotor and the outlet guide vane(OGV) is so short that the unsteady fluctuation intensity at the inlet of the OGV is the strongest.

关 键 词：对转压气机 转子/转子干涉 导叶/转子干涉 非定常模拟 

分 类 号：TH45[机械工程—机械制造及自动化]