| 点火源引燃的上坡火蔓延实验研究 |
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| 引用本文： | 陶奇,谢小冬,张林鹤,李韩,袁协尚,华涵锌.点火源引燃的上坡火蔓延实验研究[J].火灾科学,2018,27(2):92-99. |
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| 作者姓名： | 陶奇 谢小冬 张林鹤 李韩 袁协尚 华涵锌 |
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| 作者单位： | 中国科学技术大学火灾科学国家重点实验室 |
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| 基金项目： | 国家重点研发计划项目（2016YFC0800100） |
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| 摘 要： | 开展了点火源引燃的上坡火蔓延实验,用刨花丝为燃料,研究不同坡度角对火蔓延速率、火线夹角、火焰长度、火焰倾斜角等的影响规律,并简要分析了火焰对火前未燃燃料的辐射传热。发现平坡条件下会形成圆形火线,而坡度条件下会形成泪滴状的火线。当坡度角高于20°时,上坡火蔓延速率随坡度的增大迅速上升。
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| 关 键 词： | 点火源 火蔓延速率 坡度 火线夹角 |
| 收稿时间： | 2017/5/23 0:00:00 |
| 修稿时间： | 2017/6/2 0:00:00 |
Experimental research on upslope fire spread with point ignition |
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| TAO Qi,XIE Xiaodong,ZHANG Linhe,LI Han,YUAN Xieshang and HUA Hanxin.Experimental research on upslope fire spread with point ignition[J].Fire Safety Science,2018,27(2):92-99. |
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| Authors: | TAO Qi XIE Xiaodong ZHANG Linhe LI Han YUAN Xieshang and HUA Hanxin |
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| Institution: | State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | A series of upslope fire spread experiments were performed with point ignition. The excelsior was used as the fuels. The effects of slope angle on rate of spread, fire line angle, flame length and flame tilt angle were studied. The flame radiation on unburnt fuel bed was discussed. It was observed that the fire line was circular for zero slope condition, while it was in tear shape for slope conditions. When slope angle exceeded 20°, the rate of spread rate accelerated quickly with increasing slope angle. |
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| Keywords: | Point ignition Rate of spread Slope Fire line angle |
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