双火源隧道火灾的临界风速变化规律研究OA北大核心CSCDCSTPCD
Study on Variation Rules of Critical Ventilation Velocity for Double-source Tunnel Fires
使用FDS数值模拟的方法研究了双火源隧道火灾的临界风速变化规律,重点研究了纵向风下游火源功率及火源间距对临界风速的影响,并从烟气的能量转化过程分析了临界风速的变化原因.结果表明:在上游火源功率及火源间距确定的条件下,临界风速随下游火源功率增加的变化趋势近似呈线性增长;当火源间距为0时,临界风速均等同于与两个火源总功率相同的单火源情形;对于功率确定的上游火源及下游火源,临界风速随火源间距增加的变化趋势近似于二次方递减;对于功率确定的上游火源,每种功…查看全部>>
In this paper,the FDS simulation method is used to study the variation of critical ventilation velocity for double-source tunnel fires.The influence of HRR of downstream fire and the distance between the fires on critical ventilation velocity is mainly investigated.By analyzing the process of energy conversion,the reason for this changes is also investigated.The results show that under certain HRR of upstream fire and distance between the fires,the critical …查看全部>>
刘琼;郑烽
中南大学资源与安全工程学院,湖南长沙410083中南大学资源与安全工程学院,湖南长沙410083
资源环境
隧道火灾临界风速双火源数值模拟
tunnel firescritical ventilation velocitydouble-source firenumerical simulation
《防灾减灾工程学报》 2018 (1)
137-143,152,8
高等学校博士学科点专项科研基金项目(20120162120013)资助
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