水下无人系统学报2026，Vol.34Issue(1)：120-128,9.DOI:10.11993/j.issn.2096-3920.2025-0129
发射深度对水下航行体出筒点火过程的影响
Influence of Launch Depth on Ejection and Ignition Process of Underwater Vehicles
摘要
Abstract
Underwater launch technology is a key development direction in the field of underwater vehicles.The ejection and ignition process is a coupled process involving two stages:ejection of the vehicle from the launch tube and ignition near the tube muzzle.During this process,the coupling effect between high-temperature and high-pressure gas flow and the water environment forms a complex multiphase flow field.Simultaneously,severe impacts occur between the vehicle and the launch tube wall,leading to dynamic load variations.Investigating the flow evolution mechanism of this process is significant for improving the theoretical system of underwater launch.To investigate the ejection and ignition characteristics of underwater vehicles in deep-water environments,this paper employed Fluent software combined with the overset grid technique and user-defined functions to systematically study the influence of launch depth on this process.The results indicate that launch depth significantly affects the evolution of the gas jet and thrust characteristics during the ejection and ignition process:With increasing launch depth,the radial expansion of the gas bubble at the tube exit is suppressed;the entrainment effect at the tube muzzle after the vehicle leaves the tube is markedly enhanced;the gas jet is more prone to breakup,and nozzle vortices lead to engine thrust loss.This paper can provide theoretical support for the optimal design of underwater vehicle launch systems.关键词
水下航行体/水下发射/多相流/重叠网格/发射深度/耦合Key words
underwater vehicle/underwater launch/multiphase flow/overset grid/launch depth/coupling分类
军事科技引用本文复制引用
刘尚,黄曦,王立航,刘平安,褚悦..发射深度对水下航行体出筒点火过程的影响[J].水下无人系统学报,2026,34(1):120-128,9.基金项目
中央高校基本科研业务费(3072025KX0201). （3072025KX0201）
