Experimental Research on Burning Rate, Vertical Velocity and Radiation of Medium-Scale Fire Whirls
Experimental Research on Burning Rate, Vertical Velocity and Radiation of Medium-Scale Fire Whirls
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DOI：
10.3801/iaffs.fss.10-681
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
K. Zhou;Naian Liu;K. Satoh
中科院分区：
文献类型：
--
作者：
K. Zhou;Naian Liu;K. Satoh
在森林和城市火灾中经常报道火灾漩涡，对生命和财产造成毁灭性的损失。本文利用中等规模的实验设备，研究了火涡的起爆机理、垂直速度和辐射传热。实验中以庚烷为燃料。燃烧速率随时间的变化表明，火焰根部的阻力对火焰漩涡的产生和衰减起着重要作用。分析表明，压力差是由于旋转引起的，其特点是循环
Fire whirls are often reported in forest and urban fires with devastating damage to life and property. This work conducted experiments using a medium-scale facility to study the initiation mechanism, the vertical velocity and radiative heat transfer of fire whirls. Heptane was used as the fuel in the experiments. The variations of burning rates versus time indicate that the drag force on the root of the flame plays an important role in the initiation and decay of a fire whirl. Analyses show that the pressure difference due to whirling, characterized by the circulation