舰船机舱火灾烟气自然充填特性模拟实验  

Experimental study on the natural filling of smoke in a small-scale ship engine room

作　　者：吴晓伟[1] 张博思[2] 张凤香[1] 陆守香[2] 

机构地区：[1]海军装备研究院,北京100161 [2]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：《舰船科学技术》2014年第10期106-110,共5页Ship Science and Technology

摘　　要：在舰船机舱缩尺模型中开展一系列油池火实验,对3种尺寸柴油池火产生的烟气自然充填特性进行研究。为了解无通风条件下舰船机舱内的烟气运动过程,实验中对舱室内的温度分布、气体浓度以及能见度等关键参数进行测量。实验结果表明:舱室内的温度较低,且在竖直方向上不存在分层现象;舱室顶部区域烟气中的氧气浓度很低;舱室内能见度随着火源直径的增大而降低,当油池直径为0.3 m时,能见度迅速下降至2 m左右。A series of pool fire experiments was carried out in a small-scale ship engine room,to study the smoke natural filling processes for diesel oil pool fires of three diameters. In order to understand the smoke movement process in ship engine room under no ventilation condition,the critical elements,like the gas temperature profile,the concentrations of O2,CO2,and CO,and the visibility in the compartment,were measured during the experiments. Experimental results show that the temperature in the compartment is relative low and the two-zone model is not observed. The oxygen concentration decreases to a very low value. The visibility decreases with the increase of fire size,and approaches rapidly about 2m when the pool diameter is 0. 3m.

关 键 词：舰船 机舱 火灾 烟气 自然充填 

分 类 号：U698.4[交通运输工程—港口、海岸及近海工程]