南京航空航天大学学报2012，Vol.44Issue(2)：146-151,6.
矩形转圆形进气道马赫5正8°攻角启动性能分析
Start Characteristics of Hypersonic Inlets with Rectangular to Circular Shape Transition at Ma5 with Attack Angle 8°
摘要
Abstract
A hypersonic inward turning inlet with rectangular to circular shape transition integrated to a wedge fore body, whose total contraction ratio is 6.9, is investigated at Ma5, attack angle 8°with numerical simulation and wind tunnel experiment. The starting performance is studied with and without bleed on top wall in the internal compression section. The results indicate that the inlet can not start without bleed. There is large separation bubble on the top wall of the external compression section. When the inlet unstarts, the total pressure recovery, the compression ratio and the Mach number of isolator exit are 0.378, 54.1 and 1.48, respectively. When the bleed slots in the shock wave and the boundary layer interact zone of top wall are open, the inlet starts in the experiment. Then the total pressure recovery, the compression ratio and the Mach number of isolator exit are 0. 558, 44, 9 and 1. 84, respectively, with about 1. 2% of the flow entering the cowl closure section lost. The test turns out that the inlet can start with small amount of gas lost and has good performance if it starts.关键词
内收缩进气道/启动特性/数值模拟/风洞试验Key words
inward turning inlet/ start characteristics/ numerical simulation/ wind tunnel test分类
航空航天引用本文复制引用
南向军,张堃元,金志光,李永洲..矩形转圆形进气道马赫5正8°攻角启动性能分析[J].南京航空航天大学学报,2012,44(2):146-151,6.基金项目
国家自然科学基金(90916029)资助项目. （90916029）
