Wind effects on smoke motion and temperature of ventilation-controlled fire in a two-vent compartment

Haixiang Chen, Naian Liu, Wan Ki Chow

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)

Abstract

High-rise building fire is often influenced by the ambient wind. Study concerning fire behavior in the compartment of high-rise buildings in wind environment is needed for exploring some effective methods used for evaluation of compartment fire smoke movement and control. In this paper, smoke flowing direction and temperature of ventilation-controlled fire in a two-vent compartment are studied when ambient wind blows to the vent at higher altitude. It is found that there is a critical wind speed, above which the direction of smoke movement is dominated by wind rather than by buoyancy. It is also found that ambient wind has a complex influence on smoke temperature in the compartment. When wind speed exceeds another critical value, only one steady state appears in the smoke temperature rising curve. Otherwise three steady states appear. Heat transfer through the compartment walls has great influence on the second critical wind speed.
Original languageEnglish
Pages (from-to)2521-2526
Number of pages6
JournalBuilding and Environment
Volume44
Issue number12
DOIs
Publication statusPublished - 1 Dec 2009

Keywords

  • Compartment fire
  • Post-flashover
  • Smoke
  • Wind

ASJC Scopus subject areas

  • Environmental Engineering
  • Geography, Planning and Development
  • Civil and Structural Engineering
  • Building and Construction

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