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| 水雾粒径及初速度对壁面材料火灾灭火效果的影响 | |
| 引用本文： | 杨健鹏,张和平,钟委.水雾粒径及初速度对壁面材料火灾灭火效果的影响[J].燃烧科学与技术,2010,16(1). |
| 作者姓名： | 杨健鹏 张和平 钟委 |
| 作者单位： | 1. 中国科学技术大学火灾科学国家重点实验室,合肥,230027;河南省消防总队南阳支队,南阳,473000 2. 中国科学技术大学火灾科学国家重点实验室,合肥,230027 3. 郑州大学化工学院,郑州,450001 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 从理论上分析了雾滴粒径与初速度对水平运动的影响,得到了不同粒径与初速度时的雾滴在水平方向上能达到的极限距离,分析了雾滴在水平穿越火焰区时蒸发量与火焰厚度以及雾滴速度之间的关系.从理论上分析了水雾水平作用于火焰与垂直作用于火焰的区别,提出了当水雾抑制竖直壁面火蔓延时,其灭火机理以表面相灭火为主,采用较小的雾滴粒径并不能达到更好的灭火效果.在标准燃烧室内开展了全尺寸实验,对理论分析结果进行了验证. |
| 关 键 词： | 水雾 胶合板 灭火机理 粒径 |
Effect of Droplet Size and Velocity of Water Spray on a Vertial Fire |
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| YANG Jian-peng,ZHANG He-ping,ZHONG Wei.Effect of Droplet Size and Velocity of Water Spray on a Vertial Fire[J].Journal of Combustion Science and Technology,2010,16(1). | |
| Authors: | YANG Jian-peng ZHANG He-ping ZHONG Wei |
| Affiliation: | YANG Jian-peng1,2,ZHANG He-ping1,ZHONG Wei3 (1. State Key Laboratory of Fire Science,University of Science , Technology of China,Hefei 230027,China,2. Nanyang Fire Detachment,Fire Bureau of Henan Province,Nanyang 473000,3. School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China) |
| Abstract: | Water droplet cannot reach the wall unless it has enough muzzle velocity when it reaches the front of flame plane because of flow resistance in fire zone. Motion of water droplet varying in droplet size and original velocitiy is discussed and extreme length of droplet is gained. Relationships between droplet size and time and distance when water droplet passes through flame zone are analyzed. Considering different droplet sizes and velocities,fire suppression mechanisms can be divided into surface and gaseo... |
| Keywords: | water spray lining material fire suppression mechanisms droplet size |
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