弹道学报2024，Vol.36Issue(4)：104-110,7.DOI:10.12115/j.issn.1004-499X(2024)04-013
潜射导弹出筒过程流场与运动特性分析
Flow Field and Motion Characteristics Analysis of Ejection Process of Submarine-launched Missile
李海龙 1张军 1黄达 1宋志超 1丁琪 1王玺琛1
作者信息
- 1. 南京航空航天大学航空学院,江苏南京 210016
- 折叠
摘要
Abstract
Submarine-launched missile is an important component of a nation's strategic deterrent force.As the initial launch stage,the ejection process of submarine-launched missile involves complex fluid dynamics problems such as the huge impact of high-pressure gas on the bottom of the missile and the strong interaction between gas and water,which is of great significance to research.Based on the three-dimensional unsteady compressible numerical simulation method,VOF multiphase flow model and overlapping grid technology were utilized to study the acceleration during the process of wedge entry and the flow field and motion characteristics under different conditions during the ejection process of submarine launched missiles.The simulation results show that the higher bottom pressure leads to the larger exit velocity,the greater axial force,the faster attenuation of the velocity,the larger the lateral displacement of the projectile,and the greater lateral load.The incoming flow gives rise to a decrement in gas on the upstream side and an increment in gas on the downstream side.The asymmetry of the flow fields on both sides creates lateral forces and rotational moments with respect to the center of mass,causing the projectile to deflect in the direction of the incoming flow.The higher inflow velocity leads to the greater lateral acceleration of the projectile and the larger possibility to deviate.The research results can provide technical support for the ballistic design of submarine launched missiles.关键词
潜射导弹/出筒/可压缩/VOF多相流/重叠网格/模拟仿真Key words
submarine-launched missile/ejection process/compressible/VOF multiphase flow/overlapping grid/simulation analysis分类
军事科技引用本文复制引用
李海龙,张军,黄达,宋志超,丁琪,王玺琛..潜射导弹出筒过程流场与运动特性分析[J].弹道学报,2024,36(4):104-110,7.
