进口边界层吸入对S弯进气道流场影响的数值研究  

Numerical study on the influence of boundary layer suction on S-shaped inlet flowfield

作　　者：常心悦 闵浩 田园 李康 王飞飞 CHANG Xin-yue;MIN Hao;TIAN Yuan;LI Kang;WANG Fei-fei(AECC Sichuan Gas Turbine Establishment,Mianyang 621000,China)

机构地区：[1]中国航发四川燃气涡轮研究院,四川绵阳621000

出　　处：《燃气涡轮试验与研究》2020年第6期22-27,60,共7页Gas Turbine Experiment and Research

摘　　要：采用三维数值模拟方法对S弯进气道流场特性进行了研究。通过对比S弯进气道有无进口边界层吸入的不同条件,分析了进口边界层吸入时进气道内部流场结构的变化。结果表明,无边界层吸入时,进气道流场均匀,底部无分离现象;有边界层吸入时,进气道进口出现了马蹄涡,底部存在较大的低压区,并在出口位置形成典型的对涡结构。进一步研究发现,改变进气道出口马赫数,将导致进气道进口流场结构、内部流场以及出口对涡结构变化。The 3D viscous flow simulation has been conducted for an S-shaped inlet.The simulation com⁃pared the inlet conditions with or without boundary layer suction to analyze the flow filed change in S-shaped inlet.The result of simulation showed when without boundary layer suction,there was uniform flow field in S-shaped inlet and nearly without separation on bottom.But with boundary layer suction,horse⁃shoe vortex existed in entrance and the total pressure on bottom of inlet was lower than other area,in the same time a double-structure vortex was found in the exit of the inlet.The further study to change the exit Mach number shows the change of the flow field structure at entrance,inside and the change of the dou⁃ble-vortex at exit.

关 键 词：S弯进气道 边界层吸入 对涡 马蹄涡 流场结构 数值模拟 

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]