A discrete dynamical model for flame spread over combustible flat solid surfaces subject to pyrolysis with charring

An application example to upward flame spread

Djebar Baroudi (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

A discrete dynamical approach for modelling the early phase of the spread of a flame over a pyrolysing surface of a charring solid is developed. The discrete dynamical model (DDM) consists of a two-dimensional upward spread model coupled with a one-dimensional pyrolysis submodel. One numerical example of applying the DDM to the upward flame spread on a wooden board is provided. The goal of this numerical simulation was to investigate the possibility that the model could describe the transient behaviour of the spread. A qualitative comparison with one test from the literature is performed. In the numerical example, the following features are qualitatively captured: evolution of the pyrolysing area on the surface, transient pyrolysis depth, transient ‘flame spread patterns’ (two-dimensional contour maps of mass flux of gasified fuel, of surface temperature and of pyrolysis depth) and the total mass loss rate.
Original languageEnglish
Pages (from-to)53-84
Number of pages32
JournalFire Safety Journal
Volume38
Issue number1
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

charring
solid surfaces
pyrolysis
flames
Pyrolysis
surface temperature
Mass transfer
Computer simulation
simulation
Temperature

Keywords

  • pyrolysis with charring
  • upward flame spread
  • discrete dynamical model
  • mass loss rate

Cite this

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title = "A discrete dynamical model for flame spread over combustible flat solid surfaces subject to pyrolysis with charring: An application example to upward flame spread",
abstract = "A discrete dynamical approach for modelling the early phase of the spread of a flame over a pyrolysing surface of a charring solid is developed. The discrete dynamical model (DDM) consists of a two-dimensional upward spread model coupled with a one-dimensional pyrolysis submodel. One numerical example of applying the DDM to the upward flame spread on a wooden board is provided. The goal of this numerical simulation was to investigate the possibility that the model could describe the transient behaviour of the spread. A qualitative comparison with one test from the literature is performed. In the numerical example, the following features are qualitatively captured: evolution of the pyrolysing area on the surface, transient pyrolysis depth, transient ‘flame spread patterns’ (two-dimensional contour maps of mass flux of gasified fuel, of surface temperature and of pyrolysis depth) and the total mass loss rate.",
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A discrete dynamical model for flame spread over combustible flat solid surfaces subject to pyrolysis with charring : An application example to upward flame spread. / Baroudi, Djebar (Corresponding Author).

In: Fire Safety Journal, Vol. 38, No. 1, 2003, p. 53-84.

Research output: Contribution to journalArticleScientificpeer-review

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