K-1035 Influence of Obstacle on Backlayering Characteristic of Thermal Plume in Model Tunnel

Abstract

When a tunnel fire happens, the accident vehicle and other vehicles often exist around the fire source. These obstacles influence are exerted on the critical ventilation velocity of the thermal plume from backlaryering and the characteristics of the backlayering distance etc. Then, we install the obstacle in the 1/15 scale model tunnel, and the influence of the obstacle on the backlayering characteristic of the thermal plume was investigated experimentally and numerically