子母弹结构特征对分离特性影响分析

doi:10.3969/j.issn.1009-086x.2021.02.006

现代防御技术 ›› 2021, Vol. 49 ›› Issue (2): 35-42.DOI: 10.3969/j.issn.1009-086x.2021.02.006

子母弹结构特征对分离特性影响分析

黄阳阳¹, 姜毅¹, 李玉龙^1,2, 张曼曼¹, 杨昌志¹

1.北京理工大学宇航学院,北京 100081;
2.中国人民解放军96901部队,北京 100094

收稿日期:2020-09-08 修回日期:2020-12-17 出版日期:2021-04-20 发布日期:2021-04-30
作者简介:黄阳阳(1994-),男,河南周口人。硕士生,主要从事计算流体力学相关研究。通信地址:100081 北京理工大学宇航学院 E-mail:huangyangyang1015@foxmail.com

Impact Analysis of Structure Characteristics of Cluster Bombs on Separation Characteristics

HUANG Yang-yang¹, JIANG Yi¹, LI Yu-long^1,2, ZHANG Man-man¹, YANG Chang-zhi¹

1. Beijing Institute of Technology,School of Astronautics,Beijing 100081,China;
2. PLA,No. 96901 Troop,Beijing100094,China

Received:2020-09-08 Revised:2020-12-17 Online:2021-04-20 Published:2021-04-30

摘要/Abstract

摘要： 超声速下子母弹的分离过程是一种包括多体运动边界与复杂气动流场干扰的多体分离问题。采用嵌套网格技术,对流体力学方程组及六自由度刚体动力学方程组进行了耦合求解,重点研究了子母弹的结构特征(包括子弹的数目、有无弹翼及排列方式等)对分离过程中流场特性的影响。结果表明:嵌套网格技术能较好地模拟超声速子母弹分离过程中的复杂扰动流场;子弹体数目越多,弹体间的气动耦合效应越强;尾翼的存在能够极大提高弹体的静稳定性;相较于“圆周型”分布,“中心圆周型”分布趋于加快弹体间的分离。

关键词: 子母弹, 多体分离, 嵌套网格, 计算流体力学, 数值模拟, 气动耦合

Abstract: The separation process of submunitions under supersonic velocity is a typical multi-body separation problem including multi-body motion boundary and complex aerodynamic flow field interference.Based on the nested grid technique,the equations of convection physics and the equations of 6 degrees of freedom of rigid body dynamics are coupled,influence of the structure characteristics (such as number,missile wings,arrangement,etc.) of the submunition on the flow field characteristics in the separation process is emphatically studied.Results show that the method of overset grids can well simulate the complex aerodynamics flow condition of multiple missiles.Under certain circumstances,more bullets will bring stronger aerodynamic coupling effect in;Missile wings can greatly improve the static stability of bullets;Compared with “circular” distribution,“central circular” distribution tends to accelerate the separation of projectile bodies.

Key words: submunition, multi-bodies separation, overset grids, computational fluid dynamics, simulation, aerodynamic coupling

中图分类号:

黄阳阳, 姜毅, 李玉龙, 张曼曼, 杨昌志. 子母弹结构特征对分离特性影响分析[J]. 现代防御技术, 2021, 49(2): 35-42.

HUANG Yang-yang, JIANG Yi, LI Yu-long, ZHANG Man-man, YANG Chang-zhi. Impact Analysis of Structure Characteristics of Cluster Bombs on Separation Characteristics[J]. Modern Defense Technology, 2021, 49(2): 35-42.

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子母弹结构特征对分离特性影响分析

Impact Analysis of Structure Characteristics of Cluster Bombs on Separation Characteristics

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