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Abstract
The transitional structure of two-phase detonations initiated by strong blast waves in decane sprays in oxygen and in clouds of wheat and RDX particles in air is investigated numerically. A one-dimensional unsteady code based on the flux corrected transport algorithm is employed. Detailed profiles of mass velocity, particle velocity, sound velocity and Mach number are presented for the reaction zone both prior to and after the establishment of fully developed detonations. With heavy particle loading a broad region of near sonic flow is observed and under proper conditions weak secondary shock waves are generated within the reaction zone.