Periodic puffing instabilities of buoyant large-scale pool fires in a confined compartment

被引：12
|
作者：
Pretrel, Hugues [1 ]
Audouin, Laurent [1 ]
机构：
[1] IRSN, LEF, SA2I, PSN RES, St Paul Les Durance, France
来源：
JOURNAL OF FIRE SCIENCES | 2013年 / 31卷 / 03期
关键词：
Compartment; pool fire; puffing; instabilities; buoyancy; PLUMES; MOTION;
D O I：
10.1177/0734904112462361
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This article presents an experimental study of the pulsating period of pool fires in a confined and ventilated compartment. Based on large-scale pool fire experiments, two modes of flame pulsation are identified. The first one is the common mode of flame puffing observed in an open atmosphere, and the second one is a perturbed pulsation mode induced by a hot vitiated environment. A description of these modes and their spectral analysis based on image processing are described. The second new mode differs from the common mode by a lower puffing frequency of the reacting gas phase. The effect of the pool diameter is analysed for the two modes.
引用
收藏
页码：197 / 210
页数：14
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