| 回燃及其对腔室火灾过程的影响 |
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| 引用本文： | 宋卫国,范维澄.回燃及其对腔室火灾过程的影响[J].火灾科学,2000,9(3):28-34. |
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| 作者姓名： | 宋卫国 范维澄 |
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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,安徽,合肥,230027 |
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| 基金项目： | 国家自然科学基金资助项目(59876039) |
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| 摘 要： | 从火灾中的两种特殊火行为－轰燃和回燃的发生机理出发,着重讨论了回燃在整个火灾过程中的作用以及回燃对轰燃的影响。结果表明,由于回燃和轰燃同为火灾全过程中的分过程,并且由于二者发生机理的相似性,因而,它们可以建立联系。当具备合适的热解产物浓度时,回燃过程可以使火灾系统的状态突变到完全发展状态,即引发轰燃。
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| 关 键 词： | 火灾 特殊火行为 回燃 轰燃 腔室火灾过程 |
| 文章编号： | 1004-5309(2000)03-0028-07 |
| 收稿时间： | 5/1/2000 12:00:00 AM |
Backdraft Phenomenon and Its Effect on Compartment fire Development |
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| SONG Wei-guo and FAN Wei-cheng.Backdraft Phenomenon and Its Effect on Compartment fire Development[J].Fire Safety Science,2000,9(3):28-34. |
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| Authors: | SONG Wei-guo and FAN Wei-cheng |
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| Institution: | State Key Laboratory of Fire Science, USTC;State Key Laboratory of Fire Science, USTC |
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| Abstract: | Effect of backdraft on compartment fire is described in the paper. Existing studies to backdraft phenomenon focused on the phenomenon itself. Based on the qualitative model of compartment fire, the mechanics of the onset of backdraft phenomenon is discussed. The results indicate that under suitable pyrolyzate concentration, a backdraft can result in severe jump of compartment fire status, during which the fire can develops from a low density status to full developed fire. On the other words, a severe backdraft can result in a flashover. |
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| Keywords: | fire science special fire behavior backdraft flashover |
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