NDLI: Experimental and Theoretical Study for Tunnel Fires with Natural Ventilation

Content Provider	Springer Nature Link
Author	Yuan, Zhongyuan Lei, Bo Kashef, Ahmed
Copyright Year	2013
Abstract	Natural ventilation mode is a ventilation strategy to control fire-induced hot smoke and provide safe and secure egress routes in subway tunnels. The study was carried out in a 1/15 reduced-scale tunnel using Froude modeling technique to investigate the fire-induced smoke temperature distribution and smoke exhaust through vertical shafts located at the ceiling of the scaled tunnel. A porous bed burner placed on the tunnel floor was used to simulate the fire source and propane was used as the fuel. The temperature distributions under the tunnel ceiling were measured using a series of K-type thermocouples to analyze smoke temperature distribution characteristics. The smoke temperature and velocity in the ventilation shafts were also monitored using hot wire anemometers. The effect of fire size, shaft distance, shaft geometry, train blockage on ceiling temperature distributions and smoke exhaust from shafts were studied. Based on the one-dimensional theory, the ceiling temperature decay characteristics were studied. Finally, empirical equations for predicting ceiling temperature distributions and smoke exhaust in tunnel fires with a natural ventilation mode were derived.
Starting Page	691
Ending Page	706
Page Count	16
File Format	PDF
ISSN	00152684
Journal	Fire Technology
Volume Number	51
Issue Number	3
e-ISSN	15728099
Language	English
Publisher	Springer US
Publisher Date	2013-12-18
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Reduced-scale experiment Natural ventilation Smoke temperature Smoke exhaust Theoretical analysis Civil Engineering Mechanics Characterization and Evaluation of Materials Physics
Content Type	Text
Resource Type	Article
Subject	Materials Science Safety, Risk, Reliability and Quality

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