Influence of moisture content and heat and mass exchange with the surrounding medium on the critical conditions of initiation of surface fire

A. I. Zvyagils'kaya, A. N. Subbotin

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Ignition of a layer of combustible forest materials (CFM) by a cylindrical heat source is considered. Critical values of the radius of a brand at which the brand can cause a surface fire are determined on the basis of numerical calculations. Dependences of the critical radius on moisture content and on conditions of heat and mass exchange between the CFM layer and the surrounding medium are determined. An assessment is made of how neglect of both the internal structure of the brand and the processes occurring in it influence the critical size. It is found that initially heterogeneous ignition of the brand occurs, and then it is followed by ignition of litter.

Original languageEnglish
Pages (from-to)558-564
Number of pages7
JournalCombustion, Explosion and Shock Waves
Volume32
Issue number5
Publication statusPublished - Sep 1996
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Engineering (miscellaneous)
  • Materials Science(all)

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