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http://dx.doi.org/10.7731/KIFSE.2019.33.3.112

Study on the Available Safe Egress Time (ASET) Considering the Input Parameters and Model Uncertainties in Fire Simulation  

Han, Ho-Sik (Dept. of Disaster Prevention, Daejeon University)
Hwang, Cheol-Hong (Department of Fire and Disaster Prevention, Daejeon University)
Publication Information
Fire Science and Engineering / v.33, no.3, 2019 , pp. 112-120 More about this Journal
Abstract
To improve the reliability of a safety assessment using a fire simulation in domestic PBD, the evaluation method of ASET considering the uncertainties of the input parameters and numerical model of fire simulation was carried out. To this end, a cinema and officetel were selected as the representative fire spaces. The main results were as follows. Considering the uncertainty of the heat release rate, which has the greatest effect on the major physical quantities presented in the life safety standard, significant changes in temperature, CO, and visibility occurred. In addition, when the bias factors reflecting the uncertainty of the numerical model were applied, there were no significant changes in temperature and CO concentration. On the other hand, the visibility was increased considerably due to the low prediction performance of smoke concentration in FDS. Finally, the reason why the physical quantity determining the ASET in domestic PBD is mainly visibility was discussed, and the application of uncertainty of the input parameters and numerical model in a fire simulation was suggested for an accurate ASET evaluation.
Keywords
Performance-based design (PBD); Available safe egress time (ASET); Model uncertainty; Fire simulation;
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Times Cited By KSCI : 2  (Citation Analysis)
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