This article is cited in 5 papers

Numerical study of dispersion of a rough dense layer of particles under the action of an expanding shock wave

T. A. Khmel, A. V. Fedorov

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

Abstract: Interaction of an expanding shock wave with a layer of particles having a rough surface is considered within the framework of the collisional model of a gas suspension. The influence of roughness on the shape of the contact boundaries in the gas phase and on the boundaries of the cloud of particles is analyzed. The development of the Richtmyer–Meshkov instability is demonstrated. Factors of particle dispersion are determined. Instability evolution is found to increase the amplitude of surface disturbances, and the development of collision dynamics favors smearing of finger-type structures. If the particle motion is essentially random, the pattern of cloud spreading is similar to that observed in experiments.

Keywords: gas suspensions, shock waves, collision dynamics, dispersion, numerical simulation.

UDC: 532.529+532.5:544.3

Received: 01.02.2017

DOI: 10.15372/FGV20170610

 English version: Combustion, Explosion and Shock Waves, 2017, 53:6, 696–704

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