Numerical Investigation of Critical Velocity in Reduced Scale Tunnel Fire with Constant Heat Release Rate
Joint Authors
Mouangue, Ruben
Tégawendé Zaida, Justin
Ekobena Fouda, Henri
Onguene, Philippe M.
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-01-18
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
When a fire occurs in a tunnel in the absence of sufficient air supply, large quantities of smoke are generated, filling the vehicles and any space available around them.
Hot gases and smoke produced by fire form layers flowing towards extremities of the tunnel which may interfere with person’s evacuation and firefighter’s intervention.
This paper carries out a numerical simulation of an unexpected fire occurring in a one-way tunnel in order to investigate for the critical velocity of the ventilation airflow; this one is defined as the minimum velocity able to maintain the combustion products in the downstream side of tunnel.
The computation is performed successively with two types of fuels representing a large and a small heat release rate, owing to an open source CFD code called ISIS, which is specific to fires in confined and nonconfined environments.
It is indicated that, after several computations of full-scale fires of 43.103 and 19.103 kJ/kg as heat release rate, the velocities satisfying the criterion of healthy environment in the upstream side of the tunnel are 1.34 m/s and 1.12 m/s, respectively.
American Psychological Association (APA)
Mouangue, Ruben& Onguene, Philippe M.& Tégawendé Zaida, Justin& Ekobena Fouda, Henri. 2017. Numerical Investigation of Critical Velocity in Reduced Scale Tunnel Fire with Constant Heat Release Rate. Journal of Combustion،Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1171186
Modern Language Association (MLA)
Mouangue, Ruben…[et al.]. Numerical Investigation of Critical Velocity in Reduced Scale Tunnel Fire with Constant Heat Release Rate. Journal of Combustion No. 2017 (2017), pp.1-12.
https://search.emarefa.net/detail/BIM-1171186
American Medical Association (AMA)
Mouangue, Ruben& Onguene, Philippe M.& Tégawendé Zaida, Justin& Ekobena Fouda, Henri. Numerical Investigation of Critical Velocity in Reduced Scale Tunnel Fire with Constant Heat Release Rate. Journal of Combustion. 2017. Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1171186
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1171186