Investigation of the shock wave propagation characteristics and cavitation effects of underwater explosion near boundaries

Abstract The shock wave propagation characteristics of underwater explosion have been of great interest to researchers. While the physical processes during an underwater explosion near boundaries are extremely complex, which involve lots of complex issues such as the explosion, shock wave propagation, water–air or water–structure interaction, etc. After the underwater detonation of an explosive, the shock wave may approach two main types of boundaries: the free surface of the water and the fluid–structure interface. The presence of these boundaries will significantly affect the wave propagation phenomena, and lead to bulk cavitation near the free surface or the structure surface. This paper deals with the behavior of shock wave propagation and cavitation from underwater explosion near different boundaries. A coupled numerical approach with combined Lagrangian and Eulerian methods is used to simulate the water–air interface and shock wave–structure interaction. A numerical model of free-field explosion in water is established, and the results have been compared with the published empirical formulas to verify the results of numerical solutions. The shock wave propagation characteristics from explosions in water near different boundaries are simulated and compared. In addition, the unsteady cavitations just near the free surface and the structure surface are described and captured. The water–air and water–structure interaction effects are examined. The results show that the free surface and structure surface boundaries have significant influence on the shock wave propagation characteristics.

[1]  A. Zhang,et al.  Influences of initial and boundary conditions on underwater explosion bubble dynamics , 2013 .

[2]  Chen-Yen Hung,et al.  Experimental study of the behaviour of mini-charge underwater explosion bubbles near different boundaries , 2010, Journal of Fluid Mechanics.

[3]  James E. Chisum,et al.  Modeling and Simulation of Underwater Shock Problems Using a Coupled Lagrangian-Eulerian Analysis Approach , 1997 .

[4]  D. Benson.  Computational methods in Lagrangian and Eulerian hydrocodes , 1992 .

[5]  Jian Li,et al.  Bubble and free surface dynamics in shallow underwater explosion , 2011 .

[6]  K. Narasimhan,et al.  Linear elastic shock response of plane plates subjected to underwater explosion , 2001 .

[7]  V. K. Kedrinskii,et al.  Negative pressure profile in cavitation zone at underwater explosion near free surface , 1976 .

[8]  Jae-Myung Lee,et al.  Blast loaded plates , 2009 .

[9]  Tiegang Liu,et al.  Application of a one-fluid model for large scale homogeneous unsteady cavitation: The modified Schmidt model , 2006 .

[10]  Tiegang Liu,et al.  The simulation of cavitating flows induced by underwater shock and free surface interaction , 2007 .

[11]  S. R. Otto,et al.  Bubble interactions near a free surface , 2004 .

[12]  Michael A. Sprague,et al.  Spectral elements and field separation for an acoustic fluid subject to cavitation , 2003 .

[13]  C. F. Hung,et al.  Elastic shock response of an air-backed plate to underwater explosion , 2005 .

[14]  Evert Klaseboer,et al.  Experimental and numerical investigation of the dynamics of an underwater explosion bubble near a resilient/rigid structure , 2005, Journal of Fluid Mechanics.

[15]  L. Librescu,et al.  Dynamic response of anisotropic sandwich flat panels to underwater and in-air explosions , 2006 .

[16]  Michael Stahl,et al.  Hydrocode simulations of air and water shocks for facility vulnerability assessments. , 2004, Journal of hazardous materials.

[17]  John M. Brett,et al.  Time-resolved measurement of the deformation of submerged cylinders subjected to loading from a nearby explosion , 2000 .

[18]  Hans U. Mair,et al.  Review: Hydrocodes for Structural Response to Underwater Explosions , 1999 .

[19]  Q. Jiao,et al.  Numerical Modeling of Underwater Explosion by One-Dimensional ANSYS-AUTODYN , 2011 .

[20]  Leif Bjørnø,et al.  Underwater explosion research using small amounts of chemical explosives , 1976 .

[21]  Tiegang Liu,et al.  Underwater shock‐free surface–structure interaction , 2003 .

[22]  C. Vendhan,et al.  Deformation and rupture of thin rectangular plates subjected to underwater shock , 2004 .

[23]  Hrvoje Jasak,et al.  A pressure-based, compressible, two-phase flow finite volume method for underwater explosions , 2013 .

[24]  C. T. Sun,et al.  Fluid-structure interaction analysis of a thick-section composite cylinder subjected to underwater blast loading , 1997 .

[25]  Licheng Sun,et al.  Computational investigation of the mitigation of an underwater explosion , 2013 .

[26]  Y. Chen,et al.  Exploration of water jet generated by Q-switched laser induced water breakdown with different depths beneath a flat free surface. , 2013, Optics express.

[27]  Rok Petkovšek,et al.  Investigation of a cavitation bubble between a rigid boundary and a free surface , 2007 .

[28]  R. Rajendran.  Reloading effects on plane plates subjected to non-contact underwater explosion , 2008 .

[29]  Boo Cheong Khoo,et al.  The simulation of compressible multi-medium flow: II. Applications to 2D underwater shock refraction , 2001 .

[30]  Evert Klaseboer,et al.  Dynamics of an oscillating bubble near a floating structure , 2005 .

[31]  Zhang A-Man,et al.  Numerical simulation of underwater contact explosion , 2012 .