Browse

The paper presents the pattern of variation of critical velocity during longitudinal downward ventilation in an inclined road tunnel with its slope varying within 0-8 degrees. The results of both full-scale numerical modelling and laboratory experiments for a 1:10 scale tunnel models are presented. The effect of fire on the critical velocity and gradient factor was studied on the models. During the numerical modelling, the seat of fire, fans and tunnel portals were modelled with 0.1*0.1*0.1 m cells, while the cell...