高压细水雾系统在高速列车上的数值模拟及验证

Numerical simulation and verification of high pressure water mist system on high speed train

目前国内高速列车上尚未配备一套完整灭火系统,且车厢内部相对封闭且人员密集,着火隐患较多,一旦发生火灾后果严重。高压细水雾灭火系统以其高效、经济、绿色等特点已成功应用于各种场合。前期在高压细水雾灭火系统应用于CRH380D的可行性研究基础之上,针对两种方案的典型参数进行FDS数值模拟分析其烟水耦合全过程。对比两种方案确定其技术参数为喷头高度h=2.1 m,流量系数k=5.0 L/(min·m^(2)),压力系数p=15 MPa,能够在115 s内将明火扑灭,具有较高的适用性。

At present,domestic high-speed trains are not equipped with a complete fire extinguishing system,and the interior of the compartment is relatively closed,crowded with people,and there are many fire hazards.Once the fire occurs,the consequences are serious.High pressure water mist fire extinguishing system has been successfully applied in various occasions because of its high efficiency,economy and green characteristics.In the early stage,Based on the feasibility study of the high-pressure fine water mist fire extinguishing system applied to CRH380D,FDS numerical simulation was conducted to analyze the whole process of smoke and water coupling for the typical parameters of the two schemes.comparison of the two programs to determine the technical parameters of the nozzle height h=2.1 m,flow coefficient k=5.0 L(/min·m^(2)),pressure coefficient p=15 MPa,able to extinguish the open fire in 115 s,with high applicability.