Numerical simulation for ventilation and smoke extraction system in Wuhan Yangtse Tunnel

By the fire analysis software (fire dynamic simulator) of large eddy simulation (FDS), studies the impact of ventilation velocity on smoke flow and temperature distribution under different fire power magnitudes, which is expected to provide related operation control parameters for daily management. The research reveals that the ventilation velocity of 2.5 metres per second is desirable when the fire power is around 20 MW in magnitude.