郑州大学学报（工学版）2017，Vol.38Issue(1)：27-31,5.DOI:10.13705/j.issn.1671-6833.2016.04.023
火源横向位置对隧道火灾烟气分岔流动影响
Numerical Investigation into the Influence of Different Transverse Fire Locations on Smoke Bifurcation Flow in Tunnel Fire
摘要
Abstract
When a fire occurd in tunnel,the longitudinal ventilation was used for personnel evacuation and smoke extraction.The stratification of smoke layer would be destroyed under high ventilation velocity,and would lead to smoke bifurcation flow,which was harmful to evacuation.The numerical simulations were conducted to investigate the influence of transverse fire locations on smoke bifurcation flow.The phenomena of smoke bifurcation flow with different transverse fire locations were studied.The results showed that the bifurcation flow was symmetric when fire located in the central line of tunnel;and a S-shaped flow occursed in a near wall fire situation.The critical velocity of smoke bifurcation flow increased exponentially when fire source moved to the sidewall.关键词
隧道火灾/数值模拟/分岔流动/横向位置/临界风速Key words
tunnel fire/numerical simulation/bifurcation flow/transverse fire locations/critical velocity分类
交通工程引用本文复制引用
钟委,端木维可,李华琳,梁天水..火源横向位置对隧道火灾烟气分岔流动影响[J].郑州大学学报（工学版）,2017,38(1):27-31,5.基金项目
国家自然科学基金资助项目(51404215) （51404215）
国家博士后基金特别资助项目(2015T80781) （2015T80781）
建筑安全与环境国家重点实验室开放课题(BSBE2015-02) （BSBE2015-02）
