Numerical simulation of the interaction of heterogeneous detonation with an inhomogeneous porous insert

Abstract

Numerical simulation of interaction of heterogeneous detonation wave (DW) with a porous insert occupied whole channel and part of channel was carried out. Main regimes and critical conditions of detonation attenuation and failure in porous zones were obtained for micron and submicron aluminum particles. The main difference of regimes of detonation propagation for micron and submicron aluminum particles was found. It was found that for micron and submicron particles exists a critical height of porous free region, which leads to detonation failure. The critical width of the open space between porous bodies at which detonation failure occeurs was found. For porous zones with two open spaces critical width of the open space is the same that is obtained for one open space. Critical conditions of porous inserts with open space area should be greater than for porous zone that occupies whole width of the channel.