Numerical Simulation on Underwater Shock Wave Focusing
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.
underwater shock wave focusing dynamic focus factual focus EOS
Zhen Fu ZHANG Xin Wu ZENG Qing Yu CAI Kai Feng HAN
College of Science, National University of Defense Technology, Changsha 410073,China College of Optical-electronic Science and Engineering, National University of Defense Technology, Ch
国际会议
上海
英文
121-126
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）