近自由液面聚能战斗部水下爆炸威力场  

Underwater Explosion Power Field of Near-Free Surface Shaped Charge Warhead

作　　者：王志凯 梁永辉 戴伯达 姜山 姚熊亮[1] WANG Zhikai;LIANG Yonghui;DAI Boda;JIANG Shan;YAO Xiongliang(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;College of Mechanical and Electrical Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001 [2]哈尔滨工程大学机电工程学院,哈尔滨150001

出　　处：《现代应用物理》2024年第2期174-183,190,共11页Modern Applied Physics

基　　金：国家科技重大专项基金资助项目(XX-J2019-I-0017-0016);黑龙江省重点研发计划基金资助项目(GZ20210210);黑龙江省优秀青年基金资助项目(YQ2021E009)。

摘　　要：聚能战斗部反舰武器因其高效毁伤能力而受到重视,然而现阶段对其在近自由液面的威力场研究较少。为此,结合聚能战斗部对水下靶板毁伤试验结果,建立与之相对应的数值仿真模型,利用任意拉格朗日欧拉(arbitrary Lagrange-Euler,ALE)算法模拟了金属射流形成和毁伤靶板全过程。同时,在验证模型算法有效性的基础上,通过系列工况设置,研究了小锥角聚能战斗部在近自由液面爆炸冲击波和射流特点。研究结果表明,近自由面聚能战斗部水下爆炸压力具有不对称性;自由液面对金属射流无明显影响,但受自由液面处反射的稀疏波影响,近自由液面冲击波压力下降,出现空化区域。In this paper,a damage test of the shaped charge warhead to underwater target plate is carried out,and the corresponding numerical simulation model is developed.The whole process of jet formation and damage plate is simulated by arbitrary Lagrange-Euler(ALE)algorithm,and the effectiveness of the algorithm is also verified.Then,the characteristics of shock wave and metal jet of the small cone angle shaped charge warhead in near free surface explosion are studied by a range of examples.The results show that the underwater explosion pressure of the shaped charge warhead is asymmetric.The free surface has no obvious effect on the metal jet.However,under the influence of the sparse wave reflected at the free surface,the pressure of shock wave near the free surface decreases and the cavitation area appears.

关 键 词：聚能射流 数值模拟 爆炸威力场 自由液面 

分 类 号：O384[理学—流体力学] TJ65[理学—力学]