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Predicting toxic gas concentrations resulting from enclosure fires using local equivalence ratio concept linked to fire field models
Author(s) -
Wang Z.,
Jia F.,
Galea E. R.
Publication year - 2006
Publication title -
fire and materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 58
eISSN - 1099-1018
pISSN - 0308-0501
DOI - 10.1002/fam.924
Subject(s) - enclosure , equivalence ratio , combustion , soot , environmental science , mechanics , fire dynamics simulator , carbon monoxide , large eddy simulation , carbon dioxide , computational fluid dynamics , nuclear engineering , chemistry , engineering , combustor , physics , turbulence , catalysis , biochemistry , telecommunications , organic chemistry
A practical CFD method is presented in this study to predict the generation of toxic gases in enclosure fires. The model makes use of local combustion conditions to determine the yield of carbon monoxide, carbon dioxide, hydrocarbon, soot and oxygen. The local conditions used in the determination of these species are the local equivalence ratio (LER) and the local temperature. The heat released from combustion is calculated using the volumetric heat source model or the eddy dissipation model (EDM). The model is then used to simulate a range of reduced‐scale and full‐scale fire experiments. The model predictions for most of the predicted species are then shown to be in good agreement with the test results. Copyright © 2006 John Wiley & Sons, Ltd.