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Thermal Science 2022 Volume 26, Issue 4 Part B, Pages: 3587-3596
https://doi.org/10.2298/TSCI210909053S
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Some aspects of design ventilation system in road tunnels

Stašević Miljan M. (Nikola Tesla, School of Electrical Engeneering and Construction, Zrenjanin, Serbia)
Maksimović Mirko S. ORCID iD icon (PUC Waterworks and Sewerage, Belgrade, Serbia)
Vasović-Maksimović Ivana V. (Lola Institute, Belgrade, Serbia), ivanavvasovic@gmail.com
Maksimović Katarina S. ORCID iD icon (City Administration of the City of Belgrade, Serbia)
Stašević Milenko S. (High Technical School in Zrenjanin, Serbia)

In the base, working of ventilation system can be analyzed in regular and incidental modes of operation. This paper concerns the specification of the longitudinal ventilation necessary to prevent upstream movement of combustion products in a tunnel fire. In this work the objective of the study is to analyze the road way tunnel ventilation system using CFD software to create comfort ventilation system in the tunnel. The comfort ventilation concept refers to the situation when air quality within the tunnel is reduced due to presence of polluted air in the tunnel. This paper is focused on ventilation system in a road traffic tunnel in moment of accident situation as fire. In this investigation numerical simulation of fire was carried out and determination of a critical air velocity depending on the power of the fire was conducted. The output results of the software developed for this purpose, which is also used in the realization of practical projects, are shown.

Keywords: road tunnel, ventilation, CFD modelling, fire, smoke control


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