[1]郁伟,朱斌,张小兵,等.耦合内弹道过程的膛口流场数值模拟与分析[J].南京理工大学学报(自然科学版),2009,(03):335-338.
 YU Wei,ZHU Bin,ZHANG Xiao-bing.Numerical Simulation and Analysis of Muzzle Flow Field Coupling with Interior Ballistic Process[J].Journal of Nanjing University of Science and Technology,2009,(03):335-338.
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耦合内弹道过程的膛口流场数值模拟与分析
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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:
2009年03期
页码:
335-338
栏目:
出版日期:
2009-06-30

文章信息/Info

Title:
Numerical Simulation and Analysis of Muzzle Flow Field Coupling with Interior Ballistic Process
作者:
郁伟;朱斌;张小兵;
南京理工大学动力工程学院, 江苏南京210094
Author(s):
YU WeiZHU BinZHANG Xiao-bing
School of Power Engineering,NUST,Nanjing 210094,China
关键词:
膛口 流场 内弹道 非结构网格 耦合 弹丸
Keywords:
gun muzzles flow fields interior ballistics unstructured grids coupling projectiles
分类号:
TJ303.2
摘要:
为提高武器精度,模拟弹丸射入膛内后的膛口流场,耦合内弹道过程分析弹丸射出炮口前的初始流场和射出后的流场变化。采用内弹道经典模型计算膛内弹后气体流场,建立二维轴对称气体动力学模型计算弹前气体及膛口流场,通过弹前阻力将二者同步耦合计算。计算过程采用非结构网格方法,同时考虑运动弹丸的影响,计算结果与实验流场相吻合。计算结果捕捉到弹丸出炮口后在膛口形成清晰的瓶状波系。分析得到弹丸出炮口后1.5 ms时刻炮膛内外的马赫数轴向分布;此时火药气体在膛外膨胀的最大马赫数可以达到6.32;火药经过激波后气体速度迅速下降到声
Abstract:
The muzzle flow fields after projectiles are driven inside guns are simulated to enhance firing precision.Coupled with interior ballistics process,the initial flow field and the flow field change before and after the projectile shoots out are analyzed.The classical model of interior ballistics is established to simulate the gas in bore,and an aerodynamic model of two dimension and axially symmetry is established to simulate the muzzle flow field.The two models are coupled by the resistance of the pressure in front of the projectile.The influence of the moving projectiles is also considered in simulating process by use of the method of unstructured grids.The numerical results are in good agreement with the experimental ones.Shockwaves of muzzle flow fields are obtained cleanly.Conclusions are drawn through simulations as follows:axial mach number distribution at the time 1.5 ms after the projectile fly out of muzzle is obtained;the maximum mach number is 6.32 at that time;the velocity of powder gas decreases to the subsonic after shockwaves.The pressure simultaneously has step offsets when shockwaves operate.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 教育部优秀人才支持计划( NCET040509); 高校博士学科点基金( 20060288019 ); 江苏省自然科学基金 ( BK2007531)
作者简介: 郁伟( 1984- ), 男, 博士生, 主要研究方向: 现代内弹道理论及应用, E-ma il :yuw e i_nan jing@ yahoo. com. cn;
通讯作者: 张小兵( 1968- ), 男, 教授, 博士生导师, 主要研究方向: 现代内弹道理论及应用, Em a il :zhangxb680504@ 163. com。
更新日期/Last Update: 2012-11-19