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http://dx.doi.org/10.5762/KAIS.2019.20.9.204

Effect of Re-ventilated Fan Capacity on Road Tunnel Fire  

Kim, Kang-Hee (Graduate school of Mechanical Engineering Keimyung University)
Cho, Mok-Lyang (Graduate school of Mechanical Engineering Keimyung University)
Kim, Tae-Kwon (Department of Mechanical Automotive Keimyung University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.9, 2019 , pp. 204-210 More about this Journal
Abstract
In case of a fire inside a tunnel, unlike ordinary roads, it is very difficult for a driver to obtain visibility, and a large accident is highly likely to occur. In this study, the smoke behavior, visible distance, and CO concentration of a jet fan were analyzed using the NIST fire simulation (FDS). All analyses were set to HRRPUA (Heat Release Rate Per Area) 3.6MW/m and all the analysis times were set to 600s. In all analyses by CFD, the results were confirmed at y=30m and y=110m, and smoke behavior analysis, visible range analysis, and carbon monoxide concentration were confirmed according to the diameter and flow rate. As the size and flow rate of the jet fan increased, the visibility distance was high at y=30m, and the concentration of carbon monoxide was also confirmed to be 0 ppm. Therefore, proper setting of the jet fan diameter and flow rate will be an excellent solution for fires in tunnels, and taking refuge at upstream area of a re-ventilated fan can reduce the number of casualties.
Keywords
FDS; Tunnel; CO Concentration; Visible Distance; Jet Fan; Smoke Behavior;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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