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Assessment of Fire Dynamics Simulator for Heat Flux and Flame Heights Predictions from Fires in SBI Tests

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Abstract

This paper presents an experimental and numerical study of heat flux and flame heights from fires generated in single burning item (SBI) tests. Thin steel plate probes were developed, as an inexpensive and reliable alternative to heat flux gauges, to measure the surface heat flux, whilst flame heights were determined by analyzing the instantaneous images extracted from the videos of the experiments by a CCD camera. Experimental results obtained at different heat release rates were subsequently used to assess the accuracy of the computational fluid dynamics (CFD) code, Fire dynamics simulator (FDS, V4.07). Simulation results indicated that though predicting reasonably flame heights FDS underpredicts significantly the surface heat flux at higher heat release rates. Consequently, a sensitivity study of the parameters used in the radiation and soot models in FDS was conducted.

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Acknowledgements

The authors acknowledge the EU for financially supporting the PREDFIRE-NANO project under Grant number 013998 in the sixth Framework Program. The authors thank Mr M. McKee and Mr W. Veighey for helping with the experiments.

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Authors and Affiliations

  1. FireSERT, Research Institute of Built Environment, University of Ulster at Jordanstown, Newtownabbey, BT37 0QB, UK

    Jianping Zhang, Michael Delichatsios & Matthieu Colobert

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  1. Jianping Zhang
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  2. Michael Delichatsios
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  3. Matthieu Colobert
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Correspondence to Jianping Zhang.

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Zhang, J., Delichatsios, M. & Colobert, M. Assessment of Fire Dynamics Simulator for Heat Flux and Flame Heights Predictions from Fires in SBI Tests. Fire Technol 46, 291–306 (2010). https://doi.org/10.1007/s10694-008-0072-6

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  • DOI: https://doi.org/10.1007/s10694-008-0072-6

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