文献类型：期刊文献

中文题名：基于CFAST模拟研究通风开口比例对室内火灾的影响

英文题名：The Study on Influences of Ventilation Opening Fraction on Compartment Fires Based on CFAST Simulation

作者：王致嫣

第一作者：王致嫣

机构：[1]贵州理工学院矿业工程学院

第一机构：贵州理工学院矿业工程学院

年份：2016

卷号：0

期号：4

起止页码：23-25

中文期刊名：六盘水师范学院学报

外文期刊名：Journal of Liupanshui Normal University

收录：国家哲学社会科学学术期刊数据库

语种：中文

中文关键词：CFAST模拟;室内火灾;通风开口比例;火灾危险性

外文关键词：CFAST simulation;;compartment fire;;ventilation opening fraction;;fire hazard

摘要：为研究通风对室内火灾的影响,利用CFAST软件进行模拟。通过研究不同通风开口比例下的烟气层温度、烟气层界面高度、烟气层O_2体积分数和地面受到的热辐射变化规律,得出当通风开口全部关闭时,烟气导致的危险性最高;当通风开口全部开启时,火势和烟气导致的危险性最小;存在一个通风开口比例使火势最剧烈,高温和热辐射导致的危险性最高,但烟气导致的危险性不大。
In order to study the influences of ventilation on compartment fire,CFAST simulation software was used to have numerical simulation.By analysing the variations of upper layer temperature、layer height、volume fraction of 02 in upper layer and heat flux at floor,it is indicated that the fire grows quickly to self-extinguish with the highest smoke hazard level under the condition of fully close vent.While in the case of fully open vent,the fire will grow slowly with the lowest smoke hazard level.It also shows that the worst condition occurs at a specific opening fraction,where the hazard level from temperature and heat flux is the highest,though the smoke hazard level is not high.