基于空气涡旋结构特性的舰船通道空气涡塞隔烟方法  

Smoke isolating of air vortex in ship tunnels based on vortex structure characters

作　　者：仲晨华[1] 朱小俊[1] 杨志青[1] 刘文思[1] 

机构地区：[1]海军工程大学舰船工程系,武汉430033

出　　处：《海军工程大学学报》2013年第4期74-78,共5页Journal of Naval University of Engineering

基　　金：海军工程大学自然科学基金资助项目(HGDYDJJ12007)

摘　　要：根据稳定的空气涡旋结构特性,提出了通道内空气涡塞隔烟的原理及通道内稳定涡旋运动的生成方法。通过理论与仿真模拟,分析了通道涡旋的流场结构特性、空气喷射流的特点,得到通道内涡旋流场的三种典型状态,即部分的空气射流流向烟区、或无烟区、或基本不向两侧喷射,并证明这三种状态均能隔烟,但前两种存在给火灾区增加新鲜空气或增加吸气道空气过滤量的不利情况,第三种状态为最好。由于通道内涡旋的流场是由人工确定的,因此通过控制空气射流参数总可以使流动接近于第三种状态。仿真实验与比例实验证明:该方法隔烟能力强,而且兼顾了消、防(含不助燃特性)两种矛盾之间的要求。Based on the stable air vortex structure, this paper proposes the principle and method of a new kind of air vortex to isolate the smoke in tunnels. The characters of tunnel air vortex structure and air jet flow were analyzed by theories and numeric simulation. Three different typical flow distri- bution and parameter settings which can produce stable air vortex and make the jet flow move to the fire area or safe area or neither side were investigated to prove their isolating ability. The third distri- bution was proved to be the best because there was no fresh air in the fire area or increased filtration. As the flow field of air vortex in the tunnel was man-made, the third type of flow distribution could be achieved by modifying air jet flow parameters. The numeric simulation and scale experiment show that the air vortex can isolate the smoke effectively and deal with the contradiction between eliminating fire and isolating fire （including less fresh air）.

关 键 词：舰船火灾 舰船消防 隔烟 空气涡旋 烟气蔓延 烟气仿真 

分 类 号：TU998.1[建筑科学—市政工程]