K-1039 Pressure drop at tunnel fire

Abstract

When tunnel fire occurs, pressure drops at the fire source by the expansion of the air. The strict pressure drop has not been estimated in the discussion of the tunnel ventilation in the emergency fires as yet. In this research, tunnel fires are simulated in one and three dimensionaly and the pressure drop is investigated. The effects of the fire scale and the ventilation velocity on the pressure drop by the fire is clarified.