Wessies, S.
and Yang, J.
(2024),
On the Nusselt Number Correlations of Tandem Surrogate Firebrands on a Flat Surface, Fire Safety Journal, [online], https://doi.org/10.1016/j.firesaf.2024.104207, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=956495
(Accessed November 9, 2024)
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On the Nusselt Number Correlations of Tandem Surrogate Firebrands on a Flat Surface
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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.Citation
Fire Safety Journal
Volume
148
Pub Type
Journals
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Keywords
heat transfer, convection, naphthalene sublimation, tandem cylinders, firebrands, wildland fires
Citation
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Created June 28, 2024, Updated July 26, 2024