Forced convection fire spread along wooden dowel array

Giovanni Di Cristina, Shijin Kozhumal, Albert Simeoni, Nicholas Skowronski, Ali Rangwala, Seong kyun Im

Research output: Contribution to journalArticle

Abstract

The effects of freestream flow on fire spread behaviors of a discrete wooden fuel array were studied. The spacing between fuel elements was varied, and the flame spread behavior under 1, 2, and 3 m/s forced flow velocities was investigated. The fastest spread rate was not observed for the smallest spacing. Furthermore, increasing spacing did not necessarily lead to a slower spread, as seen with the flame spread along the 0.75 cm spaced array which was as fast or faster than the 0.5 cm spacing condition. At a spacing of 1 cm, fragmented flames were observed at wind speeds of 3 m/s that coincided with a slower spread rate than the 2 m/s wind conditions. The anomalies were explained using flame visualization and pitot probe measurements to determine the effects of flow speed at different spacing conditions. It seems that a coupling between the combustion and fluid dynamics of flow around the dowel cylinders under certain conditions strongly affects the fire spread behaviors.

Original languageEnglish
Article number103090
JournalFire Safety Journal
DOIs
Publication statusAccepted/In press - 2020 Jan 1

Keywords

  • Discrete fuels
  • Flame spread
  • Fluid dynamics
  • Wood combustion

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Safety, Risk, Reliability and Quality
  • Physics and Astronomy(all)

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  • Cite this

    Di Cristina, G., Kozhumal, S., Simeoni, A., Skowronski, N., Rangwala, A., & Im, S. K. (Accepted/In press). Forced convection fire spread along wooden dowel array. Fire Safety Journal, [103090]. https://doi.org/10.1016/j.firesaf.2020.103090