Development of an In house Computer Code for the Simulation of Detonation Shock Dynamics in Underwater Explosion Scenario

Detonation Shock Dynamics (DSD), involved in an underwater explosion scenario is numerically simulated by in-house computer code, ‘DSSDYN’. The simulation based on Chapman-Jouguet (CJ) theory, formulated Arbitrary Lagrangian Eulerian frame work. Specifically, the propagation of detonation front with‘Burn Fraction Model’. classical burn fraction model improved for achieving better computational efficiency. capability DSS-DYN demonstrated through a case study PETN charge under deep-water medium.Through this study, salient features DSD with insight have been brought out. Besides, physical parameters, such as work potential PETN, are predicted efficiently.The apportionment energy distributions indicates that about 70 % chemical explosive transmitted to surrounding water major contribution damage explosive. predictions peak velocity and pressure values LS-DYNA show satisfactory comparison.DSS-DYN consumes lesser time (~1h), compared (~3h).