南京理工大学学报（自然科学版）2016，Vol.40Issue(5)：538-543,548,7.DOI:10.14177/j.cnki.32-1397n.2016.40.05.006
脉冲气体炮膛口流场特性研究
Study on muzzle flow field performance of pulsed gas cannon
周鹏 1曹从咏 1董浩1
作者信息
- 1. 南京理工大学 自动化学院，江苏 南京210094
- 折叠
摘要
Abstract
In order to study the muzzle flow field structure of the pulsed gas cannon,the unsteady viscous compressible two dimensional axisymmetrical equation and the Spalart-Allmaras turbulence model are established. Combined with the dynamic layering meshing technique,the muzzle flow field produced by the projectile motion in the chamber is numerically simulated under the 0 . 5 MPa initial pressure, and the variation charts of mach number contours at different times are given. The development law of the muzzle flow field is studied in detail and the change law of projectile motion is analyzed further. The results show that the structure of muzzle flow field is mainly composed of some complex waves such as the muzzle shock wave,the projectile base shock wave,and the bottle shape shock wave. Affected by the complex muzzle flow field,the projectile motion velocity outside the barrel is weakly fluctuant.关键词
脉冲气体炮/动态分层/膛口流场/计算流体力学Key words
pulsed gas cannons/dynamic layering/muzzle flow field/computational fluid dynamics分类
军事科技引用本文复制引用
周鹏,曹从咏,董浩..脉冲气体炮膛口流场特性研究[J].南京理工大学学报（自然科学版）,2016,40(5):538-543,548,7.
