K-1037 Interference of Ventilation between Two Tunnels connected by Snow Shed

Abstract

If fire smoke is generated in the upstream successive tunnel by a traffic accident, the exhausted smoke flows into the downstream tunnel, which may destroy the evacuate environment in the downstream tunnel. It is, therefore, important to discuss the interference rate of successive tunnels. In this paper, the effect of variouse parameters on the interference rate is investigated by large eddy simulation. The reliability of numerical code is verified by comparing with the real scale tunnel experiment. Consequently, the interference rate is expressed by a new equation.