西藏高原地区浮力羽流温升特性研究  

Studies on the characteristics of fire plume temperature in Tibet

作　　者：任彬彬[1] 李元洲[1] 阳东[1] 徐伯乐[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,安徽合肥230026

出　　处：《火灾科学》2009年第3期115-121,共7页Fire Safety Science

基　　金：国家"十一五"科技支撑计划(2006BAK06B07)

摘　　要：通过在拉萨对不同尺寸的三种油池火试样分别进行试验,获取了柴油在相当于平原地区64%大气压力和氧浓度条件下不同工况下不同位置处羽流中心线温度的实时变化情况等原始数据,计算了不同尺寸油池火的热释放速率,分析了低氧低压环境下的羽流中心温升特点及原因,并将实验值与经典羽流模型Heskestad模型的计算值进行了比较,分析了传统羽流模型在高原地区的适用性。Pool fire experiments with three different pool sizes were conducted in Lhasa. Under the atmospheric pressure and oxygen concentration in Lhasa, which are only 64% of those in plain area, the plume centerline temperatures at different position were measured. The heat release rates of different pools were calculated. The characteristics of plume centerline tempera- ture under lower pressure and oxygen concentration were analyzed. The measurement was compared with the calculation of Heskastad＇s plume model. It showed that the traditional plume model was not suitable in plateau area.

关 键 词：油池火 热释放速率 羽流中心温升 高原环境 

分 类 号：TK121[动力工程及工程热物理—工程热物理]