数值模拟对起火点处物体燃烧特性研究的作用  

Computer numerical simulation on combustion characteristics of the fire point

作　　者：汪珂吉 周妍静 何伟[3] 周德闯[4] 

机构地区：[1]岳阳市消防支队,湖南岳阳414000 [2]株洲市消防支队,湖南株洲412000 [3]九江市消防支队,江西九江332000 [4]中国科学技术大学火灾科学国家重点实验室,安徽合肥230027

出　　处：《消防科学与技术》2014年第11期1354-1357,共4页Fire Science and Technology

基　　金：高等学校博士学科点专项科研基金资助项目(20113402120007)

摘　　要：利用FDS对一起商住合用房火灾事故进行火灾数值模拟重构,通过模拟得出不同热释放速率增长速率下高斯热通量、辐射热通量等参数和烧损情况,与实际火灾场景烟熏痕迹和烧损情况进行对比,证明数值模拟的合理性,对起火点处引起火灾的起火物的燃烧特性进行更好的调查分析。并且通过模拟不同热释放增长速率下氧气浓度、二氧化碳和一氧化碳的变化,对人员死亡原因进行分析。FDS was used to simulate a fire accident that happened in an residential and commercial building, the combustion char- acteristics including Gauss heat flux, radiation heat flux and burning loss under different fire growth rate conditions were compared to the real fire scenario to verify the rationality of the numerical simulation, and the combustion characteristics of the fire point were analyzed better. The cause of death was ana- lyzed by means of simulating the concentration variation of the oxygen, carbon dioxide and carbon monoxide.

关 键 词：FDS 火灾调查 数值重构 商住建筑 

分 类 号：X928.7[环境科学与工程—安全科学] TU998.12[建筑科学—市政工程]