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http://dx.doi.org/10.3795/KSME-B.2002.26.7.976

A Study of Smoke Movement in Tunnel Fire with Natural Ventilation  

Kim, Sung-Chan (중앙대학교 대학원)
Lee, Sung-Ryong (중앙대학교 대학원)
Kim, Choong-Ik (중앙대학교 기계공학부)
Ryou, Hong-Sun (중앙대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.26, no.7, 2002 , pp. 976-982 More about this Journal
Abstract
In this study, smoke movement in tunnel fire with natural ventilation shaft has been investigated with various size of fire source. Gasoline pool fire with different size of diameter - 73mm, 100mm, 125mm and 154mm - was used to describe fire source. Experimental data is obtained with 1/20 model tunnel test and its results are compared with numerical results. The computation were carried out using FDS 1.0 which is a field model of fire-driven now. Temperature profiles between measured and predicted data are compared along ceiling and near the ventilation shaft. Both results are in good agreement with each other. In order to evaluating a safe egress time in tunnel fire, horizontal smoke front velocity was measured in model tunnel fire tests and those are compared with numerical results. According to the presence or absence of natural ventilation shaft, ventilation effect are estimated quantitatively. Finally, this paper shows that computational fluid dynamics(CFD) is applicable to predict fire-induced flow in tunnel.
Keywords
Tunnel Fire; Natural Ventilation; Smoke Movement; Pool Fire; LES;
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