| Abstract: | Underwater explosion properties of an aluminized explosive, DXD-03, were numerically modeled by two burn techniques; a programmed-burn technique and a rate equation calibrated from two-dimensional steady-state detonation experiments based on the detonation shock dynamics. The modeling by using the programmed-burn technique did not reproduce experimental data well; 12% to 34% error in peak pressure and 20% error in bubble period. The modeling by using the rate equation reproduced the experimental observations very well. Although there was some difference in peak pressure, the shock profile agreed very well with experimental observation. The calculated bubble period agreed with the experimental data within 1%. This result demonstrates that the underwater explosion properties for aluminized explosives can be calculated only when the slow energy release of aluminium is modeled properly. |
