This article is cited in 23 papers

Calculation of detonation wave propagation in a gas suspension of aluminum and inert particles

A. V. Fedorov, Yu. V. Kratova

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia

Abstract: Propagation of a detonation wave in a plane channel filled by a gas suspension of fine aluminum particles and inert particles in oxygen is studied. Heterogeneous detonation of aluminum particles in oxygen propagates in the Chapman–Jouguet regime. Two types of the flow resulting from detonation interaction with a cloud of particles are found: continuous propagation with a smaller detonation velocity and flow with detonation failure. The influence of physical and spatial parameters of the inert component of the cloud on these regimes is found, including the mechanism of suppression of heterogeneous detonation, which means separation of the ignition and combustion wave from the leading shock front. Dependences of the velocity deficit on the mass fraction and size of inert particles are determined.

Keywords: gas suspension, heterogeneous detonation, detonation suppression by inert particles, numerical simulation.

UDC: 532.529+541.126

Received: 20.05.2012

 English version: Combustion, Explosion and Shock Waves, 2013, 49:3, 335–347

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