内压缩段构型对高超声速进气道自起动性能的影响  

Influence of internal contraction section configurations on self-starting ability of hypersonic inlets

作　　者：葛严[1] 谢文忠[1] 靖建朋[2] 林宇[1] 

机构地区：[1]南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室,南京210016 [2]中国人民解放军驻西安飞机工业(集团)有限责任公司军事代表室,西安710089

出　　处：《航空动力学报》2017年第5期1148-1159,共12页Journal of Aerospace Power

摘　　要：为了探寻内压缩段构型对高超声速进气道自起动性能的影响,对二元高超声速进气道折角型和曲线型两种内压缩段的自起动过程进行准定常数值仿真研究.对比了这两种构型进气道在不同唇罩起始压缩角下的自起动性能和自起动过程中分离区的变化规律,并分析了内通道压缩强度沿程分布对进气道自起动性能的影响.研究表明:(1)即使进气道内收缩段的内收缩比相同,不同的内压缩段构型和唇罩起始压缩角对高超声速进气道的自起动性能影响显著,曲线型内压缩段构型的自起动性能明显优于折角型;(2)内压缩段的总压缩强度及其沿流向分布都是影响高超声速进气道自起动性能的关键因素,并且压缩强度沿流向分布决定着进气道在自起动过程中处于临界状态下主分离包所停留的位置.To explore the influence of different internal contraction section configurations on self-starting ability of hypersonic inlets,the self-starting processes of two-dimensional hypersonic inlets with angulated and curved internal contraction sections were investigated using quasi-steady numerical simulations.The self-starting ability and the variation of separation zone in the self-starting process of two inlet configurations with different initial cowl compression angles were compared.And influences of compression strength distributions along internal contraction section on self-starting ability were also analyzed.Results show：（1） for the same internal contraction ratio,different internal contraction section configurations and initial cowl compression angles influence the self-starting ability of hypersonic inlets greatly.And the self-starting ability of the curved internal contraction section configuration is much better than that of the angulated one.（2） Both the total compression strength of the internal contraction section and the compression strength distributions along internal contraction section have major influences on the self-starting ability of hypersonic inlets.Also,the compression strength distribution determines the position of the massive separation zone under the critical condition.

关 键 词：高超声速进气道 内压缩段构型 自起动性能 自起动过程 主分离包 

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]