Influence of Different Number of the Open Exhaust Outlets in Tunnel Lateral Exhaust System on Smoke Exhaust Effect. Issue 1 (February 2021)

• Record Type: Journal Article
• Authors: Huang, Yang; Zhang, Li; Han, Xuefeng
• Is Part Of: IOP conference series. Volume 676:Issue 1(2021)
• Publication Date: 2021-02
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/676/1/012084
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: In this paper, firstly, the parameters of the tunnel fire model are set up, the tunnel model is established, the reasonable grid is divided, and the appropriate fire power is selected. Secondly, the data of exhaust mode, layout position, exhaust power and wind speed of exhaust outlet of lateral exhaust system are selected reasonably. Finally, by using the FDS simulation software, the motion, visibility, smoke spreading distance and temperature of the tunnel fire smoke are simulated by changing the number of smoke vents opened in the lateral exhaust system under the same fire environment. The result of the simulation shows the number of open smoke outlets is 4 groups(upstream 1 group, downstream 3 groups), the smoke control effect is the best.