Shock Wave Propagation and Bubble Pulsation of TNT Underwater Explosion

摘要

Shock wave and bubbles are basic forms of energy spread and conversion processes for underwater explosion, which is also the fundamental energy for destructive effect on targets. In this paper, the flow-out boundary and variable step-size multi-material Euler algorithm were utilized to analyze numerically the whole process of shock wave generation and propagation, as well as the bubble formation and impulse of underwater explosion. The computed results present the energy output characteristics of underwater explosion by TNT charge, which provide an important scientific basis for formulation design of charge and improvement of damage effects on underwater target.