国防科技大学学报2025，Vol.47Issue(3)：213-221,9.DOI:10.11887/j.cn.202503022
杆式射流水中运动特性影响因素分析
Research on the influences of motion characteristics of rod jet under water
摘要
Abstract
To thoroughly investigate the underwater motion characteristics of rod jets,the effects of liner thickness,material,and charge length-to-diameter ratio on the underwater motion characteristics of rod jets were systematically explored by combining experimental methods with numerical simulations.The results show that after entering the water,the rod jet undergoes head upsetting and experiences mass erosion effects.The effective length of the jet initially increases and then decreases during its motion,while its average velocity decays exponentially.Further analysis indicates that increasing the liner thickness and charge length-to-diameter ratio can significantly enhance the jet's resistance to erosion and its ability to maintain velocity.The optimal range for liner thickness is 0.036Dk to 0.055Dk.When the charge length-to-diameter ratio exceeds 1.25,the influence of charge structure on the underwater motion characteristics of the rod-shaped jet gradually diminishes.Additionally,material density has a significant impact on the velocity decay law of the rod jets during underwater penetration:the higher the density,the stronger the jet's ability to maintain velocity;when material densities are similar,the velocity decay laws of the jets tend to be consistent.The study also demonstrates that liners made of copper,tantalum,and tungsten are all suitable for underwater shaped-charge warheads.This research provides important theoretical support and reference for the design optimization of underwater shaped-charge warheads.关键词
杆式射流/运动特性/水下侵彻/数值模拟Key words
rod jet/movement characteristics/underwater penetration/numerical simulation分类
军事科技引用本文复制引用
陈兴,卢永刚,张存旺..杆式射流水中运动特性影响因素分析[J].国防科技大学学报,2025,47(3):213-221,9.基金项目
国家自然科学基金资助项目(11672278) （11672278）
