Numerical Studies of Wave Generation Using Spiral Detonating Cord

The control of underwater explosions is an industrial concern. In this paper, a comparison of experimental and numerical results of high-pressure generation using underwater explosion of spiral detonating cord is presented. To demonstrate that the converging process of underwater shock wave yields high pressure near the spiral center, the experimental investigation aims to compare underwater shock wave pressures obtained with several detonating cord geometrical configurations and study the wave converging process for a spiral cord. Because the experimental approach of these fast transient events is expensive and time-consuming, numerical simulations of experimental cases by using multi-material Eulerian formulation are carried out. The multi-material Eulerian, which is a particular multi-material ALE (Arbitrary Lagrangian Eulerian) formulation was successfully used in many industrial applications involving computational fluid dynamic problems. By using an explicit finite element method, a good agreement between numerical and experimental results will valid multi-material Eulerian formulation abilities to solve accurately underwater shock wave problems for spiral detonating cord in various shapes.