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Thermophysics and Aeromechanics

2010 year, number 1

Mathematical modelling of thermophysical processes at peat firing and smoldering

A.M. Grishin, A.S. Yakimov
Keywords: thermophysics, peat, drying, pyrolysis, smoldering, water
Pages: 151-167

Abstract

A new statement and the numerical solution of the problem of the peat layer firing as a result of the effect of the surface fire is given on the basis of a mathematical model of a porous reacting medium. The original reagent smoldering at moderate temperatures (Т1 ≤ 750 K) is found to be determined by the processes of heat and mass exchange with the forest fire source, peat drying and pyrolysis, reaction of the carbon oxide oxidation, thermophysical characteristics, and the peat height as well as by the thickness of the water layer under the peat layer.