高高原受限空间内小尺度油池火燃烧特性试验研究  

Experimental study on the combustion characteristics of small size oil pool fires in confined spaces in high plateaus

作　　者：代尚沛 贾旭宏[1,2] 丁思婕 朱新华 Dai Shangpei;Jia Xuhong;Ding Sijie;Zhu Xinhua(Sichuan Key Laboratory of Civil Aircraft Fire Science and Safety Engineering,Civil Aviation Flight College of China,Sichuan Guanghan 618307,China;High Plateau Aviation Safety Laboratory,Kangding Airport,Sichuan Kangding 626000,China)

机构地区：[1]中国民用航空飞行学院民机火灾科学与安全工程四川省重点实验室,四川广汉618307 [2]康定机场高高原航空安全实验室,四川康定626000

出　　处：《消防科学与技术》2024年第2期161-167,共7页Fire Science and Technology

基　　金：四川省自然科学基金项目(2022NSFSC0302)。

摘　　要：为研究我国高高原地区的受限空间内液体燃料小尺度油池火燃烧特性,在高高原康定机场自主搭建受限空间内油池火的试验平台。共选取3类典型液体燃料(航空煤油、航空汽油、正庚烷)进行燃烧试验,测量火焰高度、火焰温度和烟气成分等变化规律,研究了高高原受限空间内小尺度油池火行为。研究发现:在高高原地区,正庚烷稳定燃烧阶段的平均火焰高度可以通过模型L/D=k+0.254Q^(2/5)/D表示,其中,火焰高度与压力之间的关系式为L/D~p^(-2/9)。3种燃料的火焰最高温度均超过600℃,而羽流轴线温升与火焰高度呈现-5/3的指数关系。产烟速率则表现出对环境压力的依赖性,其关系可表示为:v~p^(-1/3)。To study the combustion characteristics of small-scale oil pool fires of liquid fuels in confined spaces in high plateau areas of China,a test platform for oil pool fires in confined spaces was built under high plateau conditions at Kangding Airport.Three types of typical liquid fuels(aviation paraffin,aviation gasoline and n-heptane)were selected for combustion tests,and the changes in flame height,flame temperature and smoke composi-tion were measured to study the behaviour of small-scale oil pool fires in confined spaces on high plateaus.The results show that:the average flame height model for the stable stage of n-heptane in the plateau region is derived:L/D=k+0.254Q25/D,the rela-tionship between flame height and pressure is L/D~p^(-2/9);the maximum flame temperature of all three fuels exceeds 600℃,the plume axis temperature rise and flame height is-5/3 exponential relationship;the ambient pressure dependence of smoke produc-tion rate is:v~p^(-1/3).

关 键 词：高高原受限空间 油池火 火焰高度 火焰温度 烟气成分 

分 类 号：X932[环境科学与工程—安全科学] TK16[动力工程及工程热物理—热能工程]