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Characteristics of Smoke Propagation in Railway Tunnels with Rescue Station  

Jang, Won-Cheol (중앙대학교 기계공학부)
Kim, Dong-Woon (중앙대학교 기계공학부)
Lee, Seong-Hyuk (중앙대학교 기계공학부)
Ryou, Hong-Sun (중앙대학교 기계공학부)
Publication Information
Fire Science and Engineering / v.23, no.4, 2009 , pp. 13-18 More about this Journal
Abstract
The main objective of the present study is to investigate smoke propagation in railway tunnels with rescue stations. In particular, based on measurement of HRR (heat release rate) for pool fires formed at different locations, the influence of fire source location on smoke behavior is examined. The fuel is n-heptane and pool fires are generated with a square length 4cm. With the use of MVHS (Modified Volumetric Heat Source) model for fire source, extensive numerical simulations are performed by using the commercial code FLUENT (Ver.6.3) Predicted smoke temperatures and smoke propagation are discussed. From numerical predictions, it is found that ventilation systems may be necessary in the railway tunnels because the smoke moves along the tunnel, and consequently it enters the non-accident tunnel. It is also confirmed that the cross-passage and fire protection wall systems contribute to control the smoke.
Keywords
Modified VHS model; Rescue station; Tunnel fire; Smoke Propagation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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