Thermal and fluid dynamic structures of a laboratory-scale fixed-frame fire-whirl

机译：实验室规模固定框架火焰旋转的热和流体动力学结构

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Fire whirl is one of the most destructive phenomena in mass fires. To study thermal and fluid dynamic structures of a fire whirl in a laboratory a fire whirl generator consisting of two vertically oriented split-cylinders were placed in an asymmetric position to form a compartment leaving two open slits in each end. A 5-cm diameter liquid pool fire was placed at the center of the compartment floor, the fire generated buoyancy flow moved upwardly, and fresh air entered to the compartment creating swirl motion. The visible flame height of the generated fire whirl was measured by a video camera, 2-D azimuthal velocity profiles at several different heights by particle image velocimetry (PIV), and the average heat flux input to the fuel surface by a Gardon gauge type heat flux meter.

机译：火旋转是大规模火灾中最具破坏性的现象之一。为了研究实验室中的火焰旋光的热和流体动力学结构，将由两个垂直定向的分流缸组成的火焰旋转发生器被放置在不对称位置，以形成留在每个端部的两个开口狭缝的隔室。将5厘米直径的液体池火放置在隔室地板的中心，火产生的浮力流向向上移动，并进入隔室的新鲜空气，从而产生旋流运动。通过粒子图像VELOCIMETRY（PIV）在几个不同高度下通过摄像机，2-D方位角速度分布测量所产生的火旋转的可见火焰高度，并通过GORDON CAUGE型热量输入到燃料表面的平均热通量通量计。

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《ASME international mechanical engineering congress and exposition》|2001年||共4页
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Mohamed I. Hassan; A. Helali; Kozo Saito;
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中图分类电热;
关键词
Fire-whirl; Fire-dynamic; PIV; And forest-fire;

机译：火旋转;火动力;PIV;和森林火灾;

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Thermal and fluid dynamic structures of a laboratory-scale fixed-frame fire-whirl

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