Author(s)

C. Di Blasi

Abstract

Smolder spread through thin horizontal fuel layers C. Di Blasi Dipartimento di Ingegneria Chimica, Universitd degli Studi di Napoli Federico II, PmzWe 7. Tecc/wo, (90^^5 Mzpo/z, 7(a/?/ ABSTRACT Two-dimensional smoldering combustion of a thin layer of cellulosic par- ticles, in quiescent air, is numerically simulated. The mathematical model describes pressure and velocity variations through the Darcy law. Mass and energy balance equations are used to describe convective and diffusive trans- port of chemical species and convective, radiative and conductive heat trans- fer. In conjuction with transport phenomena, chemical processes are also taken into account to describe endothermic pyrolytic and exothermic oxida- tive degradation of the solid to volatiles and char and further exothermic oxidation of char. The solution is computed numerically through a finite dif- ference formulation of the model equations, based on the hybrid scheme. The splitting of the operators

Keywords