摘要
利用数值模拟方法研究了径向进气方式产生的微小进口畸变强度对轴流压气机气动性能的影响。结果表明:径向进气方式会造成轴流压气机进口最大产生1.50%的总压畸变强度,并使得轴流压气机的失速裕度和峰值效率分别降低1.64%和0.66%;随着转子节流过程的进行,进口总压畸变强度越来越小,但对轴流压气机气动性能的影响越来越大;径向进气方式所产生的进口微小畸变使得叶顶区域来流速度降低,削弱了叶顶来流对叶顶泄漏流的影响,从而使得叶顶泄漏涡在转子节流过程中提前发生螺旋式破碎,导致叶顶区域的流通能力恶化,且叶顶区域的流动损失增加,从而使得转子的气动性能下降。
A numerical simulation method was used to study the influence of small inlet distortion intensity caused by radial intake on the aerodynamic performance of axial flow compressor.Results show that the radial intake mode can cause a maximum total pressure distortion intensity of 1.50%at the inlet of the axial flow compressor,and reduce the stall margin and peak efficiency of the axial flow compressor by 1.64%and 0.66%respectively.During the rotor throttling process,the total pressure distortion intensity at the inlet becomes smaller,but the influence on the aerodynamic performance of the axial flow compressor becomes greater.The small inlet distortion caused by radial intake makes the inflow velocity in the blade tip region decrease,which weakens the influence of the inflow on the blade tip leakage flow,so that the tip leakage vortex spirally breaks in advance during the rotor throttling process,resulting in the deterioration of flow capacity in the tip region,and the flow loss in the tip region increases,thus reducing the aerodynamic performance of the rotor.
作者
晏松
卓亮
施道龙
兰小兵
楚武利
YAN Song;ZHUO Liang;SHI Daolong;LAN Xiaobing;CHU Wuli(National Engineering Research Center for Small and Special Precision Motors,Guizhou Aerospace Linquan Motor Co.,Ltd.,Guiyang 550081,Guizhou Province,China;School of Power and Energy,Northwestern Polytechnical University,Xi'an 710072,Shaanxi Province,China)
出处
《动力工程学报》
北大核心
2025年第7期968-976,共9页
Journal of Chinese Society of Power Engineering
基金
基础加强计划重大基础研究资助项目(2019-JCJQ-DA-001-099)
贵州省科技计划支持资助项目(黔科合基础MS(2025)005)。
关键词
压气机
进口畸变
失速裕度
气动性能
叶顶泄漏流
compressor
inlet distortion
stall margin
aerodynamic performance
tip leakage flow
作者简介
晏松(1998-),男,贵州贵阳人,博士,研究方向为叶轮机械气动热力学,E-mail:htlqys@163.com。
