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Assessments of spectral narrow band and weighted-sum-of-gray-gases models for computational fluid dynamics simulations of pool fires

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Dembele, S., Zhang, J. and Wen, Jennifer X. (2005) Assessments of spectral narrow band and weighted-sum-of-gray-gases models for computational fluid dynamics simulations of pool fires. Numerical Heat Transfer, Part B : Fundamentals, Volume 48 (Number 3). pp. 257-276. doi:10.1080/10407790590959780

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Official URL: http://dx.doi.org/10.1080/10407790590959780

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Abstract

The statistical narrow band (SNB), correlated-k (CK), and weighted-sum-of-gray-gases (WSGG) models have been incorporated into a computational fluid dynamics (CFD) code. Their accuracy and computing times are evaluated for three pool fires scenarios. CFD_CK and CFD_SNB yield similar predictions, and the former is three times more CPU demanding than the latter. CFD_CK is unrealistic for practical fire applications. Temperature and velocity predictions with CFD_WSGG and CFD_SNB agree better in the persistent and plume regions, but significant discrepancies are found in the intermittent region. The overall predictions of the two approaches show reasonable agreement. The WSGG model should not be discarded for CFD fire simulations.

Item Type: Journal Article
Divisions: Faculty of Science > Engineering
Journal or Publication Title: Numerical Heat Transfer, Part B : Fundamentals
Publisher: Taylor & Francis Inc.
ISSN: 1040-7790
Official Date: 2005
Dates:
DateEvent
2005Published
Volume: Volume 48
Number: Number 3
Page Range: pp. 257-276
DOI: 10.1080/10407790590959780
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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