Air Flow through the Door Opening Induced by a Room Fire under Different Ventilation Factors

摘要：

　　Air flow through the door opening induced by a room fire was studied by Computational Fluid Dynamics (CFD) model Fire Dynamics Simulator (FDS) version 5 in this paper.There are two key problems in applying CFD.The first one is on design fwe boundaries,and the second one the computing grid size.Consequently,many arguments were raised in fire hazard assessment for projects applying performance-based design in providing fire safe design.Prescribed input heating rate based on the experimental results was used in FDS.Three fire scenarios based on different ventilation conditions were simulated.Different boundary conditions were investigated to evaluate free open boundary conditions in applying CFD to predict heat release rate (HRR) and the air flow through the opening.The effects of open boundary conditions on HRR and pressure distribution at the opening plan under different ventilation factors were analyzed.

关键词： CFD Air flow rate Ventilation factor Free boundary

作者: N.Cai W.K.Chow

作者单位: Research Centre for Fire Engineering,Department of Building Services Engineering,The Hong Kong Polytechnic University,Hong Kong, China

会议类型: 国际会议

会议名称: 2012 International Symposium on Safety Science and Engineering in China (2012安全科学与工程国际会议)

会议地点: 北京

会议语种:英文

页码: 125-131

在线出版日期: 2012-11-07（万方平台首次上网日期，不代表论文的发表时间）