Smoke Diffusion Characteristics of Continuous Tunnel Fire

DOI

10.2991/978-94-6463-514-0_10How to use a DOI?

Keywords

Continuous tunnel; Smoke infiltration; Numerical computation; Fire

Abstract

To investigate the phenomenon of smoke spread between consecutive tunnel openings, this study employs STAR-CCM+ to establish a numerical simulation model of continuous tunnel fires. Various factors, including fire origin location, fire size, and longitudinal wind speed, are analyzed for their impact on smoke intrusion. The findings indicate that smaller fire sizes and larger distances between openings result in lower temperatures of smoke reaching the upstream tunnel exit. This leads to reduced buoyancy, causing the smoke to propagate longitudinally downstream further under the influence of horizontal inertial forces, thereby enhancing smoke intrusion. Additionally, lateral natural wind alters the trajectory of smoke flow, with higher lateral wind speeds corresponding to a more pronounced weakening of smoke intrusion. The objective of this research is to propose effective measures for the ventilation safety of continuous tunnel operation, ensuring the secure operation of vehicles and personnel in downstream tunnels.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Sha Tang
AU  - Xiaoyang Han
AU  - Yansheng Zhi
PY  - 2024
DA  - 2024/09/28
TI  - Smoke Diffusion Characteristics of Continuous Tunnel Fire
BT  - Proceedings of the 2024 7th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA 2024)
PB  - Atlantis Press
SP  - 75
EP  - 82
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-514-0_10
DO  - 10.2991/978-94-6463-514-0_10
ID  - Tang2024
ER  -