冰腔池火边沿高度对冰壁侧腔形成的影响  

Influence of Ullage Height on the Formation of Lateral Cavities of Ice Walls in a Pool Fire in Ice Cavities

作　　者：何旭[1] 孔得朋[1] 赵虓仝 王梓天 HE Xu;KONG De-Peng;ZHAO Xiao-Tong;WANG Zi-Tian(Center for Offshore Engineering and Safety Technology,China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)海洋油气与装备安全研究中心,青岛266580

出　　处：《工程热物理学报》2021年第8期2175-2180,共6页Journal of Engineering Thermophysics

基　　金：国家自然基金面上项目(No.51874344)。

摘　　要：本文利用透明的石英玻璃油池,研究了冰区池火中初始油池边沿高度对冰壁侧腔长度的影响。实验发现随着初始油池边沿高度的增加,侧腔长度呈现出先增加后减小的趋势。分析结果表明,这主要由于油池边沿高度会影响氧气和燃料蒸汽的分布,进而改变边界层厚度,而在边界层厚度的变化改变了燃烧速率,进一步导致燃烧时长发生变化。借助瞬态能量方程和能量守恒方程,发现侧腔长度和燃烧时长存在一定的线性关系。In this paper,the influence of the initial ullage height on the lateral cavity length of the ice wall was studied by the experiments conducted in the transparent quartz glass pool.It was found that the lateral cavity length increases first and then decreases with the increase of the initial ullage height.The analysis results show that this is because the ullage height will affect the distribution of oxygen and fuel vapor,thus changing the boundary layer thickness,and the change of boundary layer thickness will change the burning rate and further lead to the change of combustion duration.By means of the transient energy equation and the energy conservation equation,it was found that there is a linear relationship between the lateral cavity length and the combustion duration.

关 键 词：就地燃烧法 油池边沿高度 燃烧速率 侧腔 

分 类 号：TK123[动力工程及工程热物理—工程热物理]