2-D numerical simulation of characteristics of underwater explosions

The characteristics of underwater explosions, especially the distributions and the time histories of shock wave overpressures, which are generated by the underwater explosions of cylindrical charges initiated in one-end-point, are numerically simulated by using a two-dimensional multi-fluid hydrodynamic fortran code named MFIC. The cylindrical charges of four different explosives are TNT, RS-211, T/Γ(35/65) and ROT901. For each explosive four TNT equivalents, 1 kg, 3 kg, 5 kg, and 8 kg, are considered with a 3 mm thick Fe case or Al case, and the length to diameter is L/D=1.5. The spacial distributions of peak overpressure of underwater shock wave and overpressure time histories are obtained. Some overpressure time histories of different points and different explosives for both Al case and Fe case are presented.