Influence of the Positive Slope of the Fire Source on Smoke Control of Tunnel Lateral Smoke Exhaust System

Abstract In order to study the influence of the positive slope of the fire source on the smoke control effect of the lateral smoke exhaust system of the tunnel, this paper established a tunnel fire model, reasonably divided the grid, and controlled variables such as the scale of the fire source, the amount of smoke, and the smoke outlet. Using FDS simulation software, by changing the forward slope of the fire source, study the temperature distribution, CO concentration, and smoke settlement height of the tunnel fire. The simulation shows that the effect of the tunnel lateral smoke exhaust system is different when the fire source is located on different slopes.