The requirements for the occurrence of travelling fires and their distinction from previously recognized stages fire development are not well understood. Here we present a CFD method that couples fuel-area correction to single-step wood pyrolysis model. model was validated using SP medium-scale tunnel, demonstrating 19% under-prediction in peak HRR, BST/FRS large-scale compartment where predict...

Abstract Based on an actual project in Beijing, this article investigates the effect of smoke control strategies extraction efficiency under different fire source locations point system extra-long tunnels using Airpak software. The results show that when a occurs tunnel, tunnel varies greatly depending location and adoption strategies. Due to suction exhaust shaft fan, relative distance between...

The paper presents the aerodynamic performance of an axial reversible fan for high air temperatures, obtained by applying similarity theory and numerical flow simulations. This analysis was performed possibility installing existing structure impeller a in jet longitudinal ventilation tunnel. direction forced tunnels changes, it is always towards low atmospheric pressure, i.e. natural flow. Thes...