摘要
模拟火旋风的实验研究 ,应用热成像方法获得了火旋风温度场的结构 ,测量得到火旋风火焰特有的大高度直径比的物理现象 ;火焰高度比相同燃料 ,油液面积的油池火高度高 ,直径比油池火直径小。火旋风的切向速度比油池火大 ,卷吸效果好 ,可用这一特点来研究熄灭火旋风的火灾。对火旋风火灾机理的研究提出了一种有效的实验方法。
Experimental study on the model fire whirlwind, the fire whirlwind temperature field and the physical phenomenon of the big height to diameter ratio of the fire whirlwind are obtained by the infrared thermography ;The height of the fire whirlwind is greater than while its diameter is smaller than that of pool fire with the same fuel and the same liquid surface area. The tangent velocity of the fire whirlwind is greater than pool fire and it has better entrainment effect under the same conditions, these can be used to study the extinguishments of the whirlwind. And an effective experiment method is raised for the study of the mechanism of the fire whirlwind.
出处
《火灾科学》
CSCD
2002年第2期79-83,共5页
Fire Safety Science
基金
国家自然科学基金资助项目 (5 9876 0 38)
