期刊论文

Numerical Simulation of Automatic Sprinkler in High Clearance Building

中文

中国给水排水

1000-4602

2020

36

17

6-12

10.19853/j.zgjsps.1000-4602.2020.17.002

国家重点研发计划项目（2018YFC0807605）；

本校为第一机构

基于实体灭火试验,利用FDS数值模拟软件探究了净空高度为18 m的高大空间建筑自动喷水灭火系统不同喷水强度和响应时间指数(RTI)对灭火效果的影响。结果表明,喷水强度为30 L/(min·m^2)时,自动喷水灭火系统能快速抑制火灾;喷水强度为20 L/(min·m^2)时,喷头及时动作或开放多个喷头可实现控火;喷水强度为15 L/(min·m^2)时,由于喷水强度较小,水滴直接送达燃料表面的量很少,但在开放更多的喷头情况下,水能有效湿润燃烧物周边的可燃物,从而有效控火。根据不同参数下的真实物品数值模拟,对喷头动作时间、启动个数、控火时间、过火面积、物品损失,以及系统的可靠性等多方面比较,提出了工程应用设计参数...

Based on the physical fire extinguishing experiment,the effect of different sprinkler density and response time index (RTI) on fire extinguishment in a high clearance building with the clearance of 18 m was explored by using FDS numerical simulation software. When the sprinkler density was 30 L/(min·m~2),the automatic sprinkler system could suppress the fire quickly and effectively. When the sprinkler density was 20 L/(min·m~2),the automatic sprinkler system could act in time or open multiple sprinklers to control the fire. When the sprinkler...