Enhancement effect of casing on underwater explosion shock wave and bubble

IF 4.3 2区工程技术 Q1 ENGINEERING, OCEAN

Applied Ocean Research Pub Date : 2025-05-01 DOI:10.1016/j.apor.2025.104592

Zhifan Zhang , Jingyuan Zhang , Hailong Li , Gangwei Liu , Longkan Wang , Guiyong Zhang

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引用次数: 0

Abstract

The casing is a critical design factor for underwater weapons, significantly influencing the energy output of underwater explosion (UNDEX) charges. In this study, a numerical model for cased charge UNDEX was developed using the coupled Eulerian-Lagrangian (CEL) method. To optimize the shock wave and bubble energy outputs, the effects of the thickness ratio n and casing material on load characteristics were systematically investigated, and optimal parameters were derived. First, the enhancement effects of the thickness ratio n on shock wave and bubble loads were examined at varying distance parameters δ. Subsequently, the influence of n on the spatial distribution of shock wave and bubble loads was analyzed using a two-way analysis of variance (ANOVA) model. Four typical underwater weapon casing materials - Ti6%Al4%V, Cu-OFHC, Al 6061-T6, Q235 - were selected. Their impacts on key parameters, including peak shock wave overpressure, bubble radius, bubble period, bubble shape, and pulsation pressure, were thoroughly evaluated. This study aims to elucidate the spatial and temporal evolution laws of shock wave and bubble loads for different types of cased charges, providing insights into the design and optimization of underwater weapons.

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机匣对水下爆炸冲击波和气泡的增强作用

机匣是水下武器的关键设计因素，对水下爆炸（UNDEX）装药的能量输出有重要影响。本文采用耦合欧拉-拉格朗日（CEL）方法建立了壳体电荷UNDEX的数值模型。为了优化激波和气泡能量输出，系统研究了壁厚比n和套管材料对载荷特性的影响，并推导出最优参数。首先，在不同的距离参数δ下，研究了厚度比n对激波和气泡载荷的增强效应。随后，采用双向方差分析（ANOVA）模型分析了n对激波和气泡载荷空间分布的影响。选取了Ti6%Al4%V、Cu-OFHC、Al 6061-T6、Q235四种典型的水下武器机匣材料。全面评估了其对峰值冲击波超压、气泡半径、气泡周期、气泡形状和脉动压力等关键参数的影响。本研究旨在阐明不同类型装药的冲击波和气泡载荷的时空演化规律，为水下武器的设计与优化提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Ocean Research 地学-工程：大洋

CiteScore

8.70

自引率

7.00%

发文量

316

审稿时长

59 days

期刊介绍： The aim of Applied Ocean Research is to encourage the submission of papers that advance the state of knowledge in a range of topics relevant to ocean engineering.