Cellular Filtration Combustion of Porous Layers

摘要

Translated from Fizika Goreniya i Vzryva, Vol. 48, No. 1, pp. 3-13, January-February, 2012. Original article submitted January 24, 2011; revision submitted May 10, 2011. Abstract: The cellular filtration combustion of porous energetic compositions that interact with an active gas reagent and form condensed reaction products is studied for titanium powder combustion as an example. A simple and visually accessible quasi-experimental analysis of the nonlinear propagation of the combustion front with adjustable filtration transport of gas is proposed. Under conditions of a deficiency of the gas reagent and instability, the flat front of filtration combustion is divided into isolated cells of exothermic chemical reaction propagating in a pulsating mode. The results obtained are interpreted within a model of thermal filtration stability of the filtration combustion front.