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A Numerical Study on Characteristics of Smoke Exhaust in Road Tunnel Fires for Different Ventilation System  

Kim, Jong-Yoon (한국소방안전협회)
Yoo, Ji-Oh (신흥대학 건축설비디자인과)
Publication Information
Fire Science and Engineering / v.22, no.3, 2008 , pp. 201-207 More about this Journal
Abstract
In this study, three Dimensional CFD simulations were carried out to investigate the effective smoke extraction system in bi-directional road tunnel fires using FLUENT. Characteristics of transverse system with big size extraction port or with uniform extraction port, semi-transverse system and longitudinal system for smoke extraction system were analyzed. Air velocity, port size, and operating method were used with variable. Distributions of smoke spread, CO was analyzed. As a result, the transverse ventilation system with big size port was found to be more effective than the uniform ports for bi-directional road tunnel.
Keywords
Bi-directional Road tunnel; Smoke extraction; Transverse; Semi-transverse; Longitudinal; CFD;
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