摘要
不起动/再起动是高超声速进气道重要的流动现象,其影响进气道的工作范围和再起动能力。针对这一问题,对一系列不同楔面转折角的混压式进气道进行了二维流场数值模拟,从流体运动稳定性的角度分析了高超声速再起动过程的流动特征,给出了以流量系数表征的不起动/再起动特性。分析了楔面转折角变化对高超声速进气道不起动/再起动特性的影响,得到了来流起动马赫数、再起动马赫数和滞环宽度随楔面转折角的变化规律。
The inlet unstart/restart phenomenon is one of the most important issues to hypersonic inlets and the characteristic reflects the operation ranges and the restarting capacity of hypersonic inlets. A series of mixed-compression hypersonic inlets with different turning angles of the wedge are simulated under different freestream conditions in this paper. The reasons why the process of inlet unstart/restart is formed is discussed from the viewpoint of hydrodynamic stability. The unstart/restart characteristics of hypersonic inlets with different turning angles are given, and the variations of the starting Mach number, restarting Mach number and backlash width with the turning angle of the wedge presented.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2009年第2期135-140,共6页
Journal of Solid Rocket Technology
