Numerical Simulation on Underwater Shock Wave Focusing

被引：1

作者：

Zhang, Zhen Fu ^{[1
]}

Zeng, Xin Wu ^{[2
]}

Cai, Qing Yu ^{[2
]}

Han, Kai Feng ^{[2
]}

机构：

[1] Natl Univ Def Technol, Coll Sci, Changsha 410073, Hunan, Peoples R China

[2] Natl Univ Def Technol, Coll Opt Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

VIBRATION, STRUCTURAL ENGINEERING AND MEASUREMENT I, PTS 1-3 | 2012年 / 105-107卷

基金：

中国国家自然科学基金;

关键词：

underwater shock wave focusing; dynamic focus; factual focus; EOS; WATER;

D O I：

10.4028/www.scientific.net/AMM.105-107.121

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Shock wave focusing by an ellipsoidal reflector can produce higher pressure in the focal region. The focusing process of shock wave was studied by theory analyses and numerical results. Base on the experimental observation the shock wave source is equivalent to the explosion of an underwater explosive. A finite element model was set up to investigate the shock wave focusing behaviors. Both the pressure-time history and the peak pressure along the axial position were presented. The shock wave focusing process was shown. The interactions of waves in the focal region are shown. A modified EOS of water was applied, which can be used to analyze the negative pressure observed; the numerical results based on the modified EOS agree well with the experimental data.

引用

页码：121 / +

页数：2

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