Numerical Simulation on Underwater Shock Wave Focusing

Zhen Fu Zhang; Xin Wu Zeng; Qing Yu Cai; Kai Feng Han

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

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 105-107Numerical Simulation on Underwater Shock Wave...

Numerical Simulation on Underwater Shock Wave Focusing

Abstract:

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.

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Periodical:

Applied Mechanics and Materials (Volumes 105-107)

Pages:

121-126

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.105-107.121

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Online since:

September 2011

Authors:

Zhen Fu Zhang, Xin Wu Zeng, Qing Yu Cai, Kai Feng Han

Keywords:

Dynamic Focus, EOS, Factual Focus, Underwater Shock Wave Focusing

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