舰船火灾中舱壁冷却过程及最佳冷却方法研究  

Research on Cooling of Fire Shipboard Compartment Boundaries and Optimum Cooling Application

作　　者：浦金云[1] 晁小雨 李杰[1] 

机构地区：[1]海军工程大学动力工程学院 [2]91604部队

出　　处：《武汉理工大学学报（信息与管理工程版）》2017年第3期259-264,共6页Journal of Wuhan University of Technology：Information & Management Engineering

摘　　要：为了研究舰船火灾中喷淋对舱壁的冷却作用,利用FDS软件对喷淋过程进行了数值仿真,建立了喷淋对舱壁冷却效果的综合评估模型,然后采用层次分析法的思想计算了各个影响因子的权重,并对影响因子的指标进行了无量纲化处理。结果表明,喷头压力越大,冷却效果越明显,但当喷头压力超过0.1 MPa后,压力对冷却效果的影响减弱;当喷头与热壁面距离在0.3~1.0 m范围内时,距离对冷却效果影响较小;雾化夹角越大,冷却效果越好。综合考虑舱壁温度下降速度、舱壁最终温度、舱室气体温度、舱室内能见度、消防喷淋水流量5个因素,评估出最佳的冷却方案为喷头压力0.05 MPa、距离壁面0.6 m、喷头夹角0°~90°。In order to study the cooling effect of spray on bulkhead in shipboard fire, the spray process was numerically simu-lated by FDS. Then the comprehensive evaluation model of cooling effect is established, and the weight of each influencing factor is calculated by AHP method and the indicators of the impact factor were dimensionless. The results show that the cooling effect is more obvious when the nozzle pressure is higher, but when the nozzle pressure exceeds 0. IMPa, the effect of pressure on the cooling effect is weakened. When the distance between the nozzle and the hot wall is in the range of 0. 3m -1 .0m, the distance has little effect on the cooling effect. Larger atomization angle represents better cooling effect. Considering the five factors of bulkhead temperature descending speed, bulkhead final temperature, cabin air temperature, cabin visibility and water consump-tion, the best cooling scheme is when nozzle pressure is 0. 05MPa, located 0. 6m from the bulkhead, and atomization angle is 0° -90°.

关 键 词：舰船火灾 喷淋冷却 层次分析法 影响因素 数值模拟 

分 类 号：U673.4[交通运输工程—船舶及航道工程]