The effect of model parameters on the simulation of fire dynamics

Jahn, Wolfram, Rein, Guillermo and Torero, Jose L. (2008). The effect of model parameters on the simulation of fire dynamics. In: Bjorn Karlsson, Fire Safety Science - Proceedings of the 9th International Symposium. 9th International Symposium on Fire Safety Science, Karlsruhe, Germany, (1341-1352). 21 - 26 September 2008. doi:10.3801/IAFSS.FSS.9-1341

Author Jahn, Wolfram
Rein, Guillermo
Torero, Jose L.
Title of paper The effect of model parameters on the simulation of fire dynamics
Conference name 9th International Symposium on Fire Safety Science
Conference location Karlsruhe, Germany
Conference dates 21 - 26 September 2008
Proceedings title Fire Safety Science - Proceedings of the 9th International Symposium
Series Fire Safety Science
Place of Publication London, United Kingdom
Publisher International Association for Fire Safety Science
Publication Year 2008
Year available 2008
Sub-type Fully published paper
DOI 10.3801/IAFSS.FSS.9-1341
Open Access Status
ISSN 1817-4299
Editor Bjorn Karlsson
Start page 1341
End page 1352
Total pages 12
Collection year 2008
Language eng
Abstract/Summary The sensitivity of computer fire modelling using results from NIST's Fire Dynamics Simulator (FDS) to a set of input parameters related to fire growth has been analyzed. The scenario simulated is the real-scale Dalmarnock Fire Test One and the modelling results are compared to the measurements. Fire size and location, convection, radiation and combustion parameters were varied in order to determine the associated degree of sensitivity. Emphasis is put in the prediction of secondary ignition and time to flashover. In this context and while keeping the HRR constant, simulations of fire growth are significantly sensitive to location of the heat release rate (HRR), fire area, flame radiative fraction, and material thermal and ignition properties. The simulations are relatively insensitive to the heat of combustion (while keeping the HRR constant), the soot yield and the heating from the smoke layer. The results indicate that the future development of successful fire forecast methodologies of fire growth using CFD must focus on the global HRR as well as the important parameters identified here. Copyright
Subjects 2213 Safety, Risk, Reliability and Quality
2215 Building and Construction
Keyword Dalmarnock
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Conference Paper
Collection: School of Civil Engineering Publications
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Created: Fri, 08 Aug 2014, 09:55:03 EST by Julie Hunter on behalf of School of Civil Engineering