| 水下爆炸冲击波的近场特性 |
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| 引用本文： | 师华强,宗智,贾敬蓓.水下爆炸冲击波的近场特性[J].爆炸与冲击,2009,29(2):125-130. |
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| 作者姓名： | 师华强 宗智 贾敬蓓 |
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| 作者单位： | 大连理工大学船舶与海洋工程学院,辽宁,大连,116024;大连理工大学船舶与海洋工程学院,辽宁,大连,116024;工业装备结构分析国家重点实验室,辽宁,大连,116024 |
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| 摘 要： | 通过求解球形一维流体动力学方程，模拟了水下爆炸冲击波的产生和传播过程。在数值模拟中，对TNT炸药采用标准的JWL状态方程，对水采用Two-phase状态方程。应用Level Set方法确定爆炸产物和水的交界面的位置。对裸药球在无限水域爆炸进行了数值计算，考察了网格大小对结果收敛性的影响，分析了水下爆炸冲击波压力和比冲量的近场特性。最后通过数值拟合得到了冲击波压力峰值、比冲量和时间衰减常数的近似回归公式。
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| 关 键 词： | 爆炸力学 近场特性 数值计算 冲击波 水下爆炸 |
Short-range characters of underwater blast waves |
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| SHI Hua-qiang,ZONG Zhi,JIA Jing-bei.Short-range characters of underwater blast waves[J].Explosion and Shock Waves,2009,29(2):125-130. |
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| Authors: | SHI Hua-qiang ZONG Zhi JIA Jing-bei |
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| Affiliation: | 1.Department of Naval Architecture, Dalian University of Technology, Dalian 116024, Liaoning, China;2.State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian 116024, Liaoning, China |
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| Abstract: | Blast wave produced by an outer-sphere charge exploding in water of infinite depth was numerically simulated by solving the one-dimensional hydrodynamic equations for an inviscid and non-heat-conducting flow.In the simulation calculation,a Jones-Wilkins-Lee equation of state for TNT and a two-phase equation of state for water were adopted.The interface between the explosion products and water was determined by using the level set method.Firstly,grid-size effects on the convergence of the calculated results ... |
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| Keywords: | mechanics of explosion short-range character numerical calculation shock wave underwater explosion |
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