Hydrocodes » Underwater Explosions
We have also considered in some detail the results of explosions under water and next to obstacles. A major topic of interest here is the development of the gas bubble which is formed from the detonation of an explosive mixture.
As in the case of an explosion in air, a fireball is formed which expands and oscillates about a radius where pressure equilibrium occurs between th products and the ambient medium. In the case of underwater explosions the timescales of oscillations are much longer since the water is much denser than air.
We show two movies which identify how a bubble dynamically behaves in the presence of an obstacle. In this case we have a circular plate with a hole in it and we show the difference in dynamics as we move the charge further from the obstacle.
