A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Smoke Diffusion Characteristics of Continuous Tunnel Fire
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.
Smoke Diffusion Characteristics of Continuous Tunnel Fire
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.
Smoke Diffusion Characteristics of Continuous Tunnel Fire
Advances in Engineering res
Zhao, Gaofeng (editor) / Satyanaga, Alfrendo (editor) / Ramani, Sujatha Evangelin (editor) / Abdel Raheem, Shehata E. (editor) / Tang, Sha (author) / Han, Xiaoyang (author) / Zhi, Yansheng (author)
International Symposium on Traffic Transportation and Civil Architecture ; 2024 ; Tianjin, China
2024-09-24
8 pages
Article/Chapter (Book)
Electronic Resource
English
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