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http://dx.doi.org/10.7731/KIFSE.2018.32.3.042

Comparison of the Flame Height of Pool Fire according to Combustion Models in the FDS  

Han, Ho-Sik (Department of Fire and Disaster Prevention, Daejeon University)
Hwang, Cheol-Hong (Department of Fire and Disaster Prevention, Daejeon University)
Oh, Chang Bo (Department of Safety Engineering, Pukyong National University)
Choi, Dongwon (Department of Reactor System, Korea Institute of Nuclear Safety)
Lee, Sangkyu (Department of Reactor System, Korea Institute of Nuclear Safety)
Publication Information
Fire Science and Engineering / v.32, no.3, 2018 , pp. 42-50 More about this Journal
Abstract
The effect of sub-grid turbulence and combustion models on the mean flame height in a heptane pool fire according to the Fire Dynamics Simulator (FDS) version (5 and 6) based on Large Eddy Simulation (LES) was examined. The heat release rate for the fire simulation was provided through experiments performed under identical conditions and the predictive performance of the mean flame height according to FDS version was evaluated by a comparison with the existing correlation. As a result, the Smagorinsky and Deardorff turbulence models applied to FDS 5 and 6, respectively, had no significant effects on the mean flow field, flame shape and flame height. On the other hand, the difference in pool fire characteristics including the mean flame height was due mainly to the difference in the mixture fraction and Eddy Dissipation Concept (EDC) combustion models applied to FDS 5 and 6, respectively. Finally, compared to FDS 6, FDS 5 provided the predictive result of a significantly longer flame height and more consistent mean flame height than the existing correlation.
Keywords
Fire Dynamics Simulator (FDS); Flame height; Pool fire; Combustion model; Turbulence model;
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Times Cited By KSCI : 1  (Citation Analysis)
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