Abstract
Explosive dispersal of particles is a complex multiphase phenomenon that has yet to be fully understood. As the particle cloud disperses at high speed, it experiences multiphase instabilities related to Richtmyer-Meshkov (RM) and Rayleigh-Taylor (RT) instabilities when interacting with the blast-wave structure. This paper reports the results of a numerical experiment where the effect of bimodal perturbations in the initial particle volume fraction is studied. Results indicate that a signature of the initial perturbation profile remains in the particle cloud throughout the observed time, and that adding a bimodal perturbation increases the width of the cloud when compared to a uniform volume fraction distribution.
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