近壁面水下爆炸气泡运动的数值计算研究

李健;林贤坤;荣吉利;项大林

振动与冲击 ›› 2014, Vol. 33 ›› Issue (15) : 200-205.

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PDF(1904 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (15) : 200-205.
论文

近壁面水下爆炸气泡运动的数值计算研究

  • 李健1,林贤坤1,荣吉利2,项大林2
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NUMERICAL STUDY OF DYNAMICS BEHAVIOR OF BUBBLE NEAR THE WALLIN UNDERWATER EXPLOSION

  • Lijian1, Lin Xiankun1, Rong Jili2, Xiang Dalin2
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摘要

基于MSC.DYTRAN非线性有限元软件建立炸药爆轰与冲击波传播的一维有限元模型,通过与冲击波压力峰值经验公式对比,验证模型的正确性。将一维数值计算结果映射到三维流场中以确定气泡运动的初始条件,开发定义流场初始条件与边界条件的子程序,对近刚性壁面气泡运动过程进行仿真分析,通过与实验结果的对比,验证三维数值计算模型的正确性。以此为基础,研究刚性面角度以及距离参数对气泡运动、射流角度、速度的影响规律,计算模型、方法及结果对相关的工程研究和计算具有一定参考价值。

Abstract

One-dimensional model of the detonation and propagation of shock wave for explosive was established and simulated using MSC.DYTRAN finite element analysis software. The computational results of the peak value pressure of shock wave compared with the experimental results. The compared results show that the former was consistent with the latter. The initial value of three-dimensional bubble was determined by the computational results based on one-dimensional model. Subroutines defined the initial value and boundary conditions of fluid field were developed. The dynamic behavior of bubble near rigid plate were simulated and analyzed. The interactions between bubble and rigid plate were studied systematically and summarized relative law that the dynamic behaviors of bubbles have close relation with distance parameter and initial angles. The research has value to correlative theory research and engineering calculation.

关键词

水下爆炸 / 气泡脉动 / 近刚性壁面 / 射流 / 数值模拟

Key words

underwater explosion / bubble pulse / near rigid plate / jet / numerical simulation

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导出引用
李健;林贤坤;荣吉利;项大林. 近壁面水下爆炸气泡运动的数值计算研究[J]. 振动与冲击, 2014, 33(15): 200-205
Lijian;Lin Xiankun;Rong Jili;Xiang Dalin. NUMERICAL STUDY OF DYNAMICS BEHAVIOR OF BUBBLE NEAR THE WALLIN UNDERWATER EXPLOSION[J]. Journal of Vibration and Shock, 2014, 33(15): 200-205

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