Research on the motion of three-dimensional underwater explosion bubble with dytran software

The underwater explosion bubble motion under the gravitation was simulated and analyzed using MSC. DYTRAN finite element analysis software. The bubble impulse process was numerically calculated by the introduced technique of processing flow field boundary at different TNT charges with same depth and different depths with same TNT charge. The radial displacement histories of the bubble were acquired by analyzing and sumarizing the radius and the impulse period of the bubble at the above operating conditions. The computational results of the radius and the impulse period were compared with the experimental results. The compared results show that the former is consistent with the latter, the finite element model is correct and effective. The research has value to correlative theory research and engineering calculation.