Combined Convective and Conductive Effects within an Upstream Flow Along a Vertical Fuel Surface

  • B. Porterie
  • R. Saurel
  • J-C. Loraud
  • M. Larini
Conference paper
Part of the EUROTHERM Seminars book series (EUROTHERM, volume 17)

Abstract

A numerical model is developed to study the flame spread processes occuring when a high temperature material is placed in contact with a solid fuel. Gas phase processes including mass, momentum and heat transfer are coupled with solid phase processes, heat conduction and thermal degradation, through conditions at the interface solid-gas. For the gas phase, the unsteady two-dimensional Navier-Stokes equations are written, under Boussinesq approximation, in Stream Function Vorticity formulation. Solid phase processes are described by an energy balance equation. A semi-implicit method, taking coupling conductive-convective effects into account, is used to obtain the numerical solution.

This numerical model is tested assuming the solid product is dry or wet wood. The sensitivity of the flame structure to the moisture content and various parameters is examined.

Keywords

Biomass Combustion Cellulose Migration Steam 

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Copyright information

© Springer-Verlag Berlin, Heidelberg 1991

Authors and Affiliations

  • B. Porterie
    • 1
  • R. Saurel
    • 1
  • J-C. Loraud
    • 1
  • M. Larini
    • 1
  1. 1.Laboratoire des Systèmes Energétiques et Transferts ThermiquesUniversité de Provence — Centre de Saint-Jérôme. Case 321Marseille Cedex 13France

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