Flame size, heat release, and smoke points in materials flammability
Flame size, heat release, and smoke points in materials flammability
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DOI：
10.1016/j.firesaf.2007.11.006
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发表时间：
2008-08-01
影响因子：
3.1
通讯作者：
Rafferty, I. P.
中科院分区：
文献类型：
--
作者：
Linteris, G. T.;Rafferty, I. P.
使用火焰尺寸作为热释放率（HRR）的替代品的概念已经被探索。提出了一种仅从视觉图像中同时获得火焰的HRR、火焰大小（高度和面积）和烟点的技术。该技术已经在气态火焰（甲烷、丙烷、乙烯和丙烯）上进行了演示，并探索了五种燃烧的固体聚合物。基于火焰CH化学发光区域的化学计量轮廓图像的火焰面积估计与测量的HRR具有良好的线性相关性，对于所有测试的气态和固体化合物，在烟点以上或以下的燃烧速率都有效。相比之下，火焰高度和发光图像（即来自烟尘排放）由于烟点上方和下方的不同行为而混淆。Elsevier Ltd.出版。
The concept of using the flame size as a surrogate for heat release rate (HRR) has been explored. A technique for simultaneously obtaining the HRR, flame size (height and area), and the smoke point of the flame solely from visual images has been developed. The technique has been demonstrated on gaseous flames (methane, propane, ethylene, and propylene) and explored for five burning solid polymers. Estimations of the flame area from images of the stoichiometric contour based on the CH chemiluminescent region of the flames yielded a good linear correlation with measured HRR, valid for all of the gaseous and solid compounds tested, for burning rates above or below the smoke point. In contrast, flame heights and luminous images (i.e., from soot emission) were confounded by differing behavior above and below the smoke point. Published by Elsevier Ltd.