摘要
为了研究在隧道端部布置多台风机的方式提供纵向风的可行性,利用FDS模拟该种情况下的隧道横截面的纵向风速分布,并引入了标准偏差系数作为风速分布均匀性判据。计算结果表明:随着不断远离风机,横断面纵向风速逐渐接近;风机分布越平均、数量越多,断面风速越均匀,而风机风量对其影响不明显。
In order to study the feasibility of installing several fans at one end of tunnel as longitudinal ventilation system, FDS was used to simulated the longitudinal velocities in such situation. The transverse-sectional uniformity of the longitudinal velocity was discussed with employing the standard deviation coefficient. The results showed that the longitudinal velocity on the transverse section turns to be uniform with the distance to the fans increasing;The more average the distribution of the fans, and the more the fans, the more uniform the transverse-sectional distribution of longitudinal velocity while the changes of volume rate of each fan hasn’t big influence.
作者
王骏横
方正
马天佑
WANG Jun-heng;FANG Zheng;MA Tian-you(School of Civil Engineering, Wuhan University, Hubei Wuhan 430072, China;China Power Construction Engineering Consulting Central Southern Co., Ltd., Hubei Wuhan 430071, China)
出处
《消防科学与技术》
CAS
北大核心
2019年第6期817-819,共3页
Fire Science and Technology
基金
国家自然科学基金资助项目(51576144)
关键词
隧道火灾
机械排风
纵向风
横断面平均风速
FDS
tunnel fire
mechanical ventilation
longitudinal wind
average transverse-sectional velocity
FDS
