[1]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(05):538.[doi:10.14177/j.cnki.32-1397n.2016.40.05.006]
 Zhou Peng,Cao Congyong,Dong Hao.Study on muzzle flow field performance of pulsed gas cannon[J].Journal of Nanjing University of Science and Technology,2016,40(05):538.[doi:10.14177/j.cnki.32-1397n.2016.40.05.006]
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脉冲气体炮膛口流场特性研究
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
40卷
期数:
2016年05期
页码:
538
栏目:
出版日期:
2016-10-30

文章信息/Info

Title:
Study on muzzle flow field performance of pulsed gas cannon
文章编号:
1005-9830(2016)05-0538-06
作者:
周 鹏曹从咏董 浩
南京理工大学 自动化学院,江苏 南京 210094
Author(s):
Zhou PengCao CongyongDong Hao
School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China
关键词:
脉冲气体炮 动态分层 膛口流场 计算流体力学
Keywords:
pulsed gas cannons dynamic layering muzzle flow field computational fluid dynamics
分类号:
TJ32
DOI:
10.14177/j.cnki.32-1397n.2016.40.05.006
摘要:
为了研究脉冲气体炮的膛口流场结构,建立了二维轴对称非定常黏性可压方程和Spalart-Allmaras湍流模型。采用动态分层网格技术,对弹丸在5.0 MPa气室初压作用下产生的膛口流场进行了数值模拟,给出了不同时刻马赫数等值线的变化图。详细分析了膛口流场发展规律及弹丸运动规律。结果表明,膛口流场结构主要由膛口冲击波、弹底激波、瓶状激波等复杂波系构成。受复杂的膛口流场影响,弹丸在管外的运动速度具有较弱的波动性。
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.

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备注/Memo

备注/Memo:
收稿日期:2016-03-01 修回日期:2016-06-26
作者简介:周鹏(1992-),男,硕士生,主要研究方向:兵器发射理论与技术,E-mail:522130743@qq.com; 通讯作者:曹从咏(1964-),男,博士,教授,主要研究方向:兵器发射理论与技术,E-mail:jy108@njust.edu.cn。
引文格式: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,2016,40(5):538-543.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2016-10-30