[1]陈新,曹从咏,周翠平.膨胀波火炮后喷冲击波流场数值模拟[J].南京理工大学学报(自然科学版),2010,(03):333-336.
 CHEN Xin,CAO Cong-yong,ZHOU Cui-ping.Numerical Simulation of Back Blast Flow Field for Rarefaction Wave Gun[J].Journal of Nanjing University of Science and Technology,2010,(03):333-336.
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膨胀波火炮后喷冲击波流场数值模拟
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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:
期数:
2010年03期
页码:
333-336
栏目:
出版日期:
2010-06-30

文章信息/Info

Title:
Numerical Simulation of Back Blast Flow Field for Rarefaction Wave Gun
作者:
陈新 曹从咏 周翠平
南京理工大学机械工程学院, 江苏南京210094
Author(s):
CHEN XinCAO Cong-yongZHOU Cui-ping
School of Mechanical Engineering,NUST,Nanjing 210094,China
关键词:
膨胀波火炮 后喷冲击波 流场计算 自适应网格
Keywords:
rarefaction wave guns back blast field calculation adaptive mesh
分类号:
TJ399
摘要:
为研究后喷冲击波流场特性,以确定其危险区域,针对膨胀波火炮排气方式以及后喷冲击波流场的复杂波系特性,建立了三维可压缩Navier-Stokes方程。采用一阶精度的迎风总差分变小格式及自适应网格技术,对某口径膛底排气膨胀波火炮的后喷冲击波流场进行了数值模拟,获得了后喷冲击波的流动规律。结果表明:尽管差分格式的精度为一阶,通过采用自适应网格技术,同样可以获得较高的激波分辨率;同时可以确定冲击波超压的大小,以此确定膨胀波火炮后喷冲击波的安全范围。
Abstract:
To research the characteristics of the back blast flow field and determine the dangerous area,the 3D compressible Navier-Stokes equations are established according to the exhaust mode of rarefaction wave gun and the complex wave system characteristics of the back blast flow field.Based on a first order accuracy upwind total variation diminishing(TVD) scheme and adaptive mesh,the back blast flow field is numerically simulated for one rarefaction wave gun with exhaust vent in the back of breech,and the flowing disciplinarian of back blast is obtained.The result shows that though the accuracy of difference scheme is first order,the higher resolution of shock wave can also be gained by the adaptive mesh technique.The overpressure of shock waves is carried out to determine the safe range of back blast flow field of the rarefaction wave gun.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 陈新( 1970- ), 男, 副教授, 主要研究方向: 火炮发射理论与技术, E-mail: zxx cx@ mail. njust. edu. cn。
更新日期/Last Update: 2010-06-30