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http://dx.doi.org/10.7731/KIFSE.2019.33.1.050

Changes in Fire Characteristics according to the Distance Between the Fire Source and Sidewall in a Reduced-Scale Compartment  

Yun, Hong-Seok (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.1, 2019 , pp. 50-59 More about this Journal
Abstract
Experimental and numerical studies on the fire characteristics according to the distance between the fire source and sidewall under the over-ventilated fire conditions. A 1/3 reduced ISO 9705 room was constructed and spruce wood cribs were used as fuel. Fire Dynamics Simulator (FDS) was used for fire simulations to understand the phenomenon inside the compartment. As a result, the mass loss rate and heat release rate were increased due to the thermal feedback effect of the wall in the compartment fire compared to the open fire. As the distance between the fire source and sidewall was reduced, the major fire characteristics, such as maximum mass loss rate, heat release rate, fire growth rate, temperature, and heat flux, were increased despite the limitations of air entrainment into the flame. In particular, a significant change in these physical quantities was observed for the case of a fire source against the sidewall. In addition, the vertical distribution of temperature was changed considerably due to a change in the flow structure inside the compartment according to the distance between the fire source and sidewall.
Keywords
Compartment fire; Fire-wall interaction; Sidewall effect; Thermal feedback; Fire characteristics;
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Times Cited By KSCI : 2  (Citation Analysis)
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