Simulation Analysis of Tunnel Diesel Oil Explosion Based on FLACS

[摘要] The tunnel explosion model was established by using Gexcon Flacs to simulate the explosion of 3 m3 diesel oil in a tunnel. The temperature, O2, fuel concentration and pressure field distribution during the explosion in the tunnel were analysed. The simulation results show that the temperature of the initial explosion point varies most dramatically during the explosion, and the maximum temperature can reach 1093°C. The pressure pulse can reach 25Pas. When t is equal to 1.135s, the diesel oil doesn't burn completely. In the section Y=7.4m along the length direction of the tunnel, the area 1.5m above the ground is the most dangerous area.

[发布机构] Mechanical Engineering College, Jilin University, Changchun, Jilin; 130021, China^1;Mechanical Engineering College, Beihua University, Jilin, Jilin; 132021, China^2

[效力级别] 计算机科学

[关键词] Dangerous area;Diesel oil;Explosion models;Fuel concentration;Maximum temperature;Pressure field distributions;Pressure pulse;Simulation analysis