Study of smoke backlayering during suppression in tunnels

DOI	Resolve DOI: https://doi.org/10.1016/j.firesaf.2013.03.001
Author	Search for: Ko, Yoon J.ORCID identifier: https://orcid.org/0000-0001-9644-5108; Search for: Hadjisophocleous, George V.
Format	Text, Article
Subject	tunnel fires; smoke backlayering; WFFFS; fire suppression; ventilation system
Abstract	Full-scale suppression tests and Computational Fluid Dynamics (CFD) simulations were carried out to investigate the effect of Water-based Fixed Fire Fighting Systems (WFFFS) on the effectiveness of longitudinal ventilation systems in resisting smoke backlayering in tunnels. Test results show that WFFFS enables longitudinal ventilation systems to resist smoke backlayering with a lower velocity than the critical velocity for the same size of tunnel fire. Based on data obtained from the test program and the simulation program, a design method is proposed to estimate the velocity required to resist smoke backlayering in tunnels when WFFFS is active.
Publication date	2013-04-13
Publisher	Elsevier BV
In	Fire Safety Journal 58, no. C (May 2013): 240–247.
Language	English
Peer reviewed	Yes
NRC publication	This is a non-NRC publication "Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.
Identifier	S037971121300060X
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Record identifier	c7c62ed7-dfc0-45a1-8b37-1a477fa16926
Record created	2022-08-03
Record modified	2022-08-04