scholarly journals On the feasibility of using smoothed particle Hydrodynamics for underwater explosion calculations

1995 ◽  
Vol 17 (3) ◽  
pp. 151-168 ◽  
Author(s):  
J. W. Swegle ◽  
S. W. Attaway
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Underwater Explosion ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

Shock Analysis of Underwater Explosion Using Smoothed Particle Hydrodynamics

2004 ◽  
Author(s):  
S. Matsumoto ◽  
S. Itoh
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Underwater Explosion ◽  
Experimental Result ◽  
Governing Equations ◽  
Detonation Products ◽  
Sph Method ◽  
Equation Of States ◽  
Cylindrical Coordinate ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

A blasting process includes large deformations and inhomogeneities caused by shock waves as well as the detonation gases generated by explosives. Smoothed Particle Hydrodynamics (SPH) is a meshless and complete Lagrangian method. The properties of SPH method can overcome the difficulty of a simulation in a blasting process. In this study, the simulation of an underwater explosion using SEP (Safety Explosives) as a cylindrical high explosive is carried out to confirm the advantage of SPH method for the analysis in a blasting process. The Euler equations are used for the governing equations of both water and the detonation products of the explosive. The Jones-Wilkins-Lee (JWL) equation and the Mie-Gru¨neisen equation are used as the equation of states for the detonation products and water, respectively. The two-dimensional and axisymmetrical simulation in cylindrical coordinate system is adopted to analyze the underwater explosion. The simulation result is compared with the experimental result and shows that SPH method can well simulate the underwater explosion.

scholarly journals Application of Smoothed Particle Hydrodynamics in analysis of shaped-charge jet penetration caused by underwater explosion

2017 ◽  
Vol 145 ◽  
pp. 177-187 ◽  
Author(s):  
Zhifan Zhang ◽  
Longkan Wang ◽  
Furen Ming ◽  
Vadim V. Silberschmidt ◽  
Hailong Chen
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Underwater Explosion ◽  
Shaped Charge ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Jet Penetration ◽  
Shaped Charge Jet

scholarly journals Upon Bulk Cavitation Appearing in Underwater Explosions

2017 ◽  
Vol 23 (3) ◽  
pp. 71-78
Author(s):  
Vasile Năstăsescu ◽  
Ghiță Bârsan
Keyword(s):  
Numerical Model ◽  
Numerical Modelling ◽  
Smoothed Particle Hydrodynamics ◽  
Underwater Explosion ◽  
Characteristic Parameters ◽  
Sph Method ◽  
Underwater Explosions ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Smoothed Particle Hydrodynamics Method

Abstract This paper presents some results of the author’s researching in connection with SPH (smoothed particle hydrodynamics) method and underwater explosion numerical modelling. All about cavitation fundamentals are considered known and about cavitation effects upon the structures. The authors, deeply preoccupied in using of SPH method, as well in modelling of the underwater explosion effects upon structures, had to take into consideration the bulk cavitation. A main issue in this study was the knowing of the bulk cavitation domain and its characteristic parameters. Such researching was possible to be successfully carried out, only by using of the SPH method. Finally, the paper presents the relations and the working way for knowing of the bulk cavitation domain and also a numerical model using SPH method is presented. The numerical example regarding shape and dimensions of the bulk cavitation is presented together putting in evidence of some parameters which can make damages upon a structure that is in the bulk cavitation area.

Simulations of slug impact with smoothed particle hydrodynamics: Some remarks on frequently asked questions

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-427-Pr9-432
Author(s):  
P. Galon ◽  
H. Bung ◽  
M. Lepareux ◽  
T. Grünenwald
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Particle Hydrodynamics ◽  
Smoothed Particle
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