Theoretical and experimental study of cellular structures in restricted filtration combustion of porous media

Infiltration-mediated combustion of a thin porous cylinder in reactive gas was studied by mathematical modeling. Gas reagent is infiltrated through an annular gap left of the side surface. In conditions of instability, the self-sustained propagation of individual cellular spots of exothermic combust...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 558; no. 1; pp. 12018 - 12021
Main Authors Krishenik, P M, Kostin, S V, Ozerkovskaya, N I, Shkadinsky, K G
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2019
Subjects
Annular gaps
Cellular structure
Combustion
Exothermic reactions
Heat release rate
Porous media
Pressure gradients
Reagents
Surface stability
Temperature profiles
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Summary:Infiltration-mediated combustion of a thin porous cylinder in reactive gas was studied by mathematical modeling. Gas reagent is infiltrated through an annular gap left of the side surface. In conditions of instability, the self-sustained propagation of individual cellular spots of exothermic combustion was observed. The structure of cellular waves, their dynamics, and travel direction are defined by such factors as temperature profile, pressure gradients, heat release rate, porous structure, and heat losses. Cellular combustion of Ti powder in dish was also explored experimentally and the results were compared with theoretical predictions.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/558/1/012018