| 张林鹤,刘乃安,周建军,路长.竖形槽道模型中火旋风的发生与旋转规律研究[J].火灾科学,2006,15(4):200-205. |
| 竖形槽道模型中火旋风的发生与旋转规律研究 |
| Fire Whirl Occurrence and Rotation in a Vertical Square Channel Modeling |
| 投稿时间：2006-08-06 修订日期：2006-09-13 |
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| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目:国家自然科学基金重点项目(50536030);获新世纪优秀人才支持计划资助 |
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| 中文关键词: 森林火灾 火旋风 竖形槽道模型 旋转规律 |
| 英文关键词:Forest fire Fire whirl Vertical square channel modeling Rotation regulation |
| 摘要点击次数: 526 |
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| 中文摘要: |
| 火旋风是森林火灾中经常发生的一种特殊火行为。作为一种复杂的包含化学反应的有旋流动,火旋风在不同的可燃物种类和物理条件,以及不同的环境流场条件下,会表现出复杂的动力学特征。本文设计了一个在边角对称开有缝隙的六棱柱体火旋风发生装置,探讨了火旋风特征参数的测量方法,实验模拟了火旋风的发生与发展,对火旋风的温度分布、速度和燃烧时间随燃料和环境条件的变化规律进行了比较分析。 |
| 英文摘要: |
| Fire whirl is a kind of special fire behavior that usually occurs in forest fires.As a kind of complicated rotational flow with chemical reaction,fire whirl has complex dynamical behaviors under different conditions of fuel species,physical parameters,and environmental flow.This work proposed a new physical model of inducing fire whirl by six symmetrical comer caps.The experimental equipment was designed and the measurement method of determining the major characteristics of fire whirl was discussed.The occurrence and development of fire whirl were experimentally observed.The temperature distribution,velocity field, and the burning time were examined for different fuel and environmental conditions. |
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