摘要
提出了一种用于计算射击过程中火药燃气对身管传热的方法，它是借助在火炮膛内建立的包括气流与身管间传热的不稳定准一维气－固两相流动，还借助在膛壁边界层建立非稳定流而得的有关动量位移厚度的偏微分方程，采用随弹丸运动的半可延伸手风琴式网格，以ＭａｃＣｏｒｍａｃｋ格式进行有限差分计算，由此引起的膛壁温度分布．
This paper presents a method for computing the heat transfer from gas to gun tube. An unsteady quasionedimensional gassolid twophase flow model is developed. A partial differential equation on momentum displacement thickness is derived from unsteady flow in boundary layer. An halfextendible accordion grid followed by projectile is coupled with MacCormack′s finite difference scheme to compute the tube wall temperature profiles.
出处
《弹道学报》
CSCD
北大核心
1997年第4期66-69,共4页
Journal of Ballistics
关键词
内弹道学
传热
边界层
火炮
身管传热
二相流
interior ballistics, heat transfer, boundary layer, accordion grid, finite difference
