边界层吸入对S形进气道流场畸变影响的数值研究  

Numerical study of the effect of boundary layer ingestion on the flow field distortion of S-shaped intake

作　　者：傅文广 肖磊 孙鹏 FU Wenguang;XIAO Lei;SUN Peng(College of Safety Science and Engineering,CAUC,Tianjin 300300,China)

机构地区：[1]中国民航大学安全科学与工程学院,天津300300

出　　处：《中国民航大学学报》2025年第1期33-40,共8页Journal of Civil Aviation University of China

基　　金：天津市教委科研计划项目(21JCQNJC00930)。

摘　　要：为研究边界层吸入(BLI,boundarylayeringestion)对S形进气道流场畸变的影响,本文设计了短扩压、小偏距的S形进气道,分析了边界层吸入对S形进气道流场特性的影响,进一步研究了吸入不同厚度边界层对出口流场的影响。结果表明,边界层吸入时,进气道内流体的三维分离流动产生对涡旋流畸变区,使低能流体在进气道底部堆积,在出口位置形成特有的下凹形状总压畸变区。随着吸入边界层厚度的增加,进气道流通能力下降,出口截面处总压畸变强度和范围都增大,而旋流畸变范围小幅增加,旋流强度无显著变化。In order to study the effect of boundary layer ingestion(BLI)on the flow field distortion of the S-Shaped intake,a short spread pressure and small offset S-shaped intake is designed in this paper,the effect of BLI on the flow field characteristic of S-shaped intake is analyzed,and the effect of inhaling boundary layers of different thicknesses on the outlet flow field is further researched.The results show that when the boundary layer is inhaling,the three-di-mensional separation flow of the fluid inside the inlet forms a twin swirl distortion zone,low-energy fluid accumu-lated at the bottom of the intake tract,and forms a unique concave shape total pressure distortion zone at the exit position.With the increase of the thickness of the suction boundary layer,the flow capacity of the inlet tract de-creases,and the total pressure distortion intensity and range at the outlet section increase.However,the range of swirl distortion slightly increases,and there is no significant change in swirl intensity.

关 键 词：边界层吸入S形进气道 总压畸变 旋流畸变 

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]