火源位置对深井火灾烟气流动影响的数值模拟  

Numerical Simulation of the Influence of Fire Source Location on Fires Smoke Flow in Deep Well

作　　者：冯子良 冯世豪 雷鹏 刘毅[3] FENG Ziliang;FENG Shihao;LEI Peng;LIU Yi(School of Safety Science and Emergency Management,Wuhan University of Technology,Wuhan 430070,China;不详)

机构地区：[1]武汉理工大学安全科学与应急管理学院,湖北武汉430070 [2]河南省瓦斯地质与瓦斯治理重点实验室省部共建国家重点实验室培育基地,河南焦作454000 [3]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《武汉理工大学学报（信息与管理工程版）》2024年第4期551-556,共6页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：湖北省自然科学基金项目(2024AFB249);国家大学生创新创业训练计划资助项目(S202410497253)。

摘　　要：探究深井立式空间中不同火源位置对火灾严重程度的影响,构建深井立式空间模型,通过数值模拟法分析火源的热释放速率、火源与墙壁距离对深井立式空间火灾烟气流动、烟气温度和速度的影响。结果表明:在深井立式空间中,火羽流易受到墙壁限制。当火源向单侧墙壁靠近时,火羽流向近壁面倾斜。在同等条件下,火源越靠近单侧墙壁,火源正上方的烟气高度和温度越高,烟气向上流动速度越快。在模拟结果基础上使用公式拟合得到羽流温度与深度、火源距与墙壁距离的关系式。This paper explored the influence of different fire source locations on the severity of fire in deep well vertical space,and constructed a deep well vertical space model.Through numerical simulation,the heat release rate of the fire source and the distance between the fire source and the wall on the smoke flow,smoke temperature,and velocity in deep well vertical spaces were analyzed.The results indicated that in vertical deep well spaces,the fire plume flow is easily restricted by walls.When the fire source approaches a single wall,the flame plume will tilt towards the near wall surface.Under the same time conditions,the closer the fire source is to a single wall,the higher the height and temperature of the smoke directly above the fire source,and the faster the upward flow speed of the smoke.Based on the simulation results,a formula is used to fit the relationship between plume temperature and depth,as well as the distance between the fire source and the wall.

关 键 词：深井立式空间 近壁火灾 火羽流 火灾烟气流动 数值模拟 

分 类 号：X932[环境科学与工程—安全科学]