Research on factors affecting bus fire based on numerical simulation

^a College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China ;
^b Key Laboratory of Ministry of Education for Mine Disaster Prevention and Control, Shandong University of Science and Technology Shandong, Qingdao, Shandong 266590, China ;
^c Taipu Kuangye Engineering Co., Ltd., Ordos City, Inner Mongolia 017205, China

^* Corresponding author: Lin Xin, xinlinsdust@sdust.edu.cn

Abstract

With the rapid development of economy, the number of buses and bus fire increases. This paper takes bus as the research object and uses software FDS to explore the fire smoke spread under different fire power conditions. The results show that: with the increase in fire power, the smoke in the compartment rapidly accumulates, and the heating rate is also accelerated. The visibility decreases with the diffusion of smoke in the compartment. The CO concentration increases with time. The greater the fire power, the higher the temperature which will eventually stabilize. Only the concentration of smoke near the entrance will be slightly reduced. This is also conducive to the escape of people inside the car.