Abstract
A 2D model of coflow filtration combustion in a slit-like reactor was suggested. When the gas permeability of product is higher than that of fuel powder, this leads to the onset of fluid-dynamic instability and the planar front of filtration combustion may loose its planarity and acquire the shape of finger. Since combustion at the finger tip is kinetically controlled, this may lead to thermal instability giving rise to a mode of pulsating combustion. Simultaneous manifestation of fluid-dynamic and thermal instability in the system under study is reported.
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