摘要
在分析了弹穴3类流动的基础上,利用风洞试验着重研究了弹穴的几何参数(L/D、W/D、cδ、δh)以及飞行参数(M)与弹穴内流场结构间的耦合关系,获得了亚跨超声速来流条件下弹穴底面中心线上的压力分布及弹穴流动特性。研究表明:弹穴长深比(L/D)是影响弹穴流动类型和流动特性的关键因素,W/D、cδ、δh和M对弹穴的流动类型和流动特性也有一定的影响;开式穴流动弹穴流场较稳定,压力分布较均匀,有利于内埋武器安全平稳地分离。
On the basis of analyzing three cavity flows, and through the comparison of pressure distributions on cavity flows, it can be seen that the flowfield structure features and the effect of crucial parameters（ L/ D, W/D,δc 、δh and M） on cavity flowfield structures. The interrelation of cavity flow with the type of cavity and freestream Mach number are all presented. The wind tunnel experimental results can be used as a useful means in geometrical parameters optimal design for the internal weapon cavity. There are the better flowfield structure and flow features in open type cavity and closed type cavity than in transitional type cavity, in a word, for the internal weapon safe separation, open type cavity flow is the most favorable.
出处
《实验流体力学》
EI
CAS
CSCD
北大核心
2006年第4期33-39,共7页
Journal of Experiments in Fluid Mechanics
基金
总装预研重点基金项目(6140516)
关键词
弹穴
风洞试验
压力分布
cavity flow
wind tunnel experiment
pressure distributions
