[1]陈时通,于 勇.超声速流场中子母弹分离与子弹姿态变化规律的数值模拟[J].弹道学报,2019,(01):29.[doi:10.12115/j.issn.1004-499X(2019)01-006]
 CHEN Shitong,YU Yong.Numerical Simulation of Attitude Motion of Submunition DuringDispensing in Supersonic Flow Field[J].Journal Of Ballistics,2019,(01):29.[doi:10.12115/j.issn.1004-499X(2019)01-006]
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超声速流场中子母弹分离与子弹姿态变化规律的数值模拟()
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《弹道学报》[ISSN:1004-499x/CN:32-1343/TJ]

卷:
期数:
2019年01期
页码:
29
栏目:
出版日期:
2019-03-30

文章信息/Info

Title:
Numerical Simulation of Attitude Motion of Submunition DuringDispensing in Supersonic Flow Field
文章编号:
1004-499X(2019)01-0029-07
作者:
陈时通于 勇
北京理工大学 宇航学院,北京 100081
Author(s):
CHEN ShitongYU Yong
School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China
关键词:
子母弹 姿态运动 嵌套网格 数值模拟
Keywords:
cluster munition attitude motion chimera grid scheme numerical simulation
分类号:
V211.3
DOI:
10.12115/j.issn.1004-499X(2019)01-006
文献标志码:
A
摘要:
为研究超声速流场中子母弹在抛撒子弹的过程中子弹的姿态运动,在用动网格技术模拟子弹的运动过程中,利用嵌套网格连接背景网格和运动的部件网格,求解k-ω湍流输运方程,同时耦合了6DOF运动方程。对弹舱靠前和弹舱靠后2种子母弹结构进行了数值模拟,结果表明:弹舱位于前部,子弹在弹射过程中受到母弹激波的影响,姿态变化较大; 弹舱位于后部,中间位置对称分布的子弹在抛撒过程中由于受到子弹激波和不对称压力场的作用,姿态会发生不对称的变化。
Abstract:
In order to research motion attitude of submunitions dispensed from carrier in supersonic flow field,the dynamic mesh technology was used to simulate the motion process of submunitions. Background and component meshes were connected by chimera grid scheme,and the k-ω turbulent transport equation was solved,and the 6DOF equation was coupled. The structures of cluster munition with submunition container at the front and at the back were numerically simulated. The results show that the attitude of submunitions is influenced by the shock wave of missile while the location of cavity is at the front. The change of attitude angle of submunitions at the back is less than that of submunitions at the front. While the location of cavity is at the back,the attitude angle of submunitions symmetrically distributed at the middle is interfered by the shock wave of surround submunitions and asymmetrical pressure field. The change of attitude angle of submunitions in the middle is asymmetrical.

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备注/Memo

备注/Memo:
收稿日期:2018-07-19
基金项目:国防基础基金项目(B2620110006)
作者简介:陈时通(1992- ),男,硕士研究生,研究方向为流体力学。E-mail:cst19920219@sina.com。
通信作者:于勇(1976- ),男,副教授,工学博士,研究方向为流体力学。E-mail:yuyong@bit.edu.cn。
更新日期/Last Update: 2019-03-10