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Study of Fire Smoke Flow of Tunnel at Different Longitudinal Ventilation

Yang, Pei-Pei / Shi, Xiao-Lu / Shi, Bi-Ming

Once the tunnel fires happened, it will cause a major accident. And the smoke control of the runnel is important to fire prevention. A numerical simulation of the fire smoke flow in the tunnel model is presented by using FDS. The influence of different longitudinal ventilation on fire smoke flow of tunnel is obtained. And providing theory basis for tunnel ventilation system design, smoke spread control and safety evacuation. The results shown that in order to avoid reverse-flow and extend the time of smoke at the top of tunnel, the longitudinal speed should be controlled in 3.4 m/s; because of the role of longitudinal ventilation, smoke flow resistance and longitudinal ventilation generated by the effect of smoke flow resistance make the gas temperature first rise and then down.

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Study of Fire Smoke Flow of Tunnel at Different Longitudinal Ventilation

Yang, Pei-Pei / Shi, Xiao-Lu / Shi, Bi-Ming

Once the tunnel fires happened, it will cause a major accident. And the smoke control of the runnel is important to fire prevention. A numerical simulation of the fire smoke flow in the tunnel model is presented by using FDS. The influence of different longitudinal ventilation on fire smoke flow of tunnel is obtained. And providing theory basis for tunnel ventilation system design, smoke spread control and safety evacuation. The results shown that in order to avoid reverse-flow and extend the time of smoke at the top of tunnel, the longitudinal speed should be controlled in 3.4 m/s; because of the role of longitudinal ventilation, smoke flow resistance and longitudinal ventilation generated by the effect of smoke flow resistance make the gas temperature first rise and then down.

Study of Fire Smoke Flow of Tunnel at Different Longitudinal Ventilation

Yang, Pei-Pei / Shi, Xiao-Lu / Shi, Bi-Ming

Once the tunnel fires happened, it will cause a major accident. And the smoke control of the runnel is important to fire prevention. A numerical simulation of the fire smoke flow in the tunnel model is presented by using FDS. The influence of different longitudinal ventilation on fire smoke flow of tunnel is obtained. And providing theory basis for tunnel ventilation system design, smoke spread control and safety evacuation. The results shown that in order to avoid reverse-flow and extend the time of smoke at the top of tunnel, the longitudinal speed should be controlled in 3.4 m/s; because of the role of longitudinal ventilation, smoke flow resistance and longitudinal ventilation generated by the effect of smoke flow resistance make the gas temperature first rise and then down.

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Title:

Study of Fire Smoke Flow of Tunnel at Different Longitudinal Ventilation

Contributors:

Yang, Pei-Pei (author) / Shi, Xiao-Lu (author) / Shi, Bi-Ming (author)

Published in:

Vibration, Structural Engineering and Measurement II, ICVSEM, International Conference on Vibration, Structural Engineering and Measurement, 2012 ; 1472-1475

Applied Mechanics and Materials ; 226-228

Publication date:

2012

Size:

4 Seiten

ISSN:

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.226-228.1472

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

numerische Simulation , Strömung , Systemdesign , Brandrauch , Brandverhütung , Rauchdichtigkeit , Gastemperatur

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