I. Benabdelaziz, M. Bouterra, Afif El Cafsi, A. Belghith, Evaluation of Natural Ventilation on Temperature and Pressure Distribution in a Road Tunnel Fire with Vertical Shaft, ILCPA Volume 55, International Letters of Chemistry, Physics and Astronomy (Volume 55)
    This paper has analysed the influence of plug-holing on thermal and pressure field evolution in urban road tunnel fires with vertical shaft by Large Eddy Simulation (LES). Results show that the temperature reduction rate is about 70 % at the tunnel half and it increases about 80 % at the ceiling level. The pressure field is characterized by a pseudo-periodic behavior which reaches a maximum reduction rate (78 %) in case of natural ventilation. The numerical tool used is FDS (version 5).
    FDS, Natural Ventilation, Plug-Holing, Tunnel