On the Nusselt number correlations of tandem surrogate firebrands on a flat surface

IF 3.4 3区 工程技术 Q2 ENGINEERING, CIVIL Fire Safety Journal Pub Date : 2024-06-28 DOI:10.1016/j.firesaf.2024.104207
Savannah S. Wessies, Jiann C. Yang
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Abstract

Through the heat-mass transfer analogy, naphthalene sublimation experiments were conducted in a heated-air wind tunnel to study the effects of aspect ratio and dimensionless separation distance on the convective heat transfer coefficients of three tandem naphthalene cylinders. Nusselt number correlations were presented for the individual naphthalene cylinders and the full configuration of three cylinders. In all the cases studied, the Reynolds number had the strongest effect on the Nusselt number followed by the aspect ratio and the dimensionless separation distance. Nusselt numbers were higher for the smaller aspect ratios. For a given Reynolds number and aspect ratio, the Nusselt number increases with the dimensionless separation distance.

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关于平面上串联替代火带的努塞尔特数相关性
通过热质传递类比,在加热空气风洞中进行了萘升华实验,研究了高宽比和无量纲分离距离对三个串联萘圆柱体对流传热系数的影响。研究给出了单个萘气缸和三个气缸完整配置的努塞尔特数相关性。在所有研究案例中,雷诺数对努塞尔特数的影响最大,其次是长宽比和无量纲分离距离。纵横比越小,努塞尔特数越高。对于给定的雷诺数和纵横比,努塞尔特数随无量纲分离距离的增加而增加。
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来源期刊
Fire Safety Journal
Fire Safety Journal 工程技术-材料科学:综合
CiteScore
5.70
自引率
9.70%
发文量
153
审稿时长
60 days
期刊介绍: Fire Safety Journal is the leading publication dealing with all aspects of fire safety engineering. Its scope is purposefully wide, as it is deemed important to encourage papers from all sources within this multidisciplinary subject, thus providing a forum for its further development as a distinct engineering discipline. This is an essential step towards gaining a status equal to that enjoyed by the other engineering disciplines.
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