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 。
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.
出处
《火灾科学》
CSCD
2000年第3期28-34,共7页
Fire Safety Science
基金
国家自然科学基金资助项目!(59876039)
