Vertical temperature profile of a buoyant plume in an atrium

L. H. Hu; S. Zhu; Wan Ki Chow; R. Huo; Z. B. Chen; F. Tang

doi:10.1080/08916152.2010.502050

Vertical temperature profile of a buoyant plume in an atrium

L. H. Hu, S. Zhu, Wan Ki Chow, R. Huo, Z. B. Chen, F. Tang

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

4 Citations (Scopus)

Abstract

The temperatures of buoyant fire plumes were measured vertically and compared with the Zukoski model, the Heskestad model, and the McCaffrey model. Predictions by the Heskestad and McCaffrey models were closer to the measured value with average deviation of 18.4% and 18.6%, respectively, while those by the Zukoski model were much lower than the measured value with average deviation of 36.7%. The power law decay index of z was found to increase slightly with fire size, rather than being constant in the models. The coefficient for the variation of ΔT with Q2/3z-5/3it was found to be 20.9 experimentally, near to that of the Heskestad and McCaffrey models.

Original language	English
Pages (from-to)	15-33
Number of pages	19
Journal	Experimental Heat Transfer
Volume	24
Issue number	1
DOIs	https://doi.org/10.1080/08916152.2010.502050
Publication status	Published - 1 Jan 2011

Keywords

axis-symmetric fire plume
centerline temperature
gasoline pool fire
power law decay index

ASJC Scopus subject areas

Control and Systems Engineering
Instrumentation
Electrical and Electronic Engineering

More information

10.1080/08916152.2010.502050

Cite this

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abstract = "The temperatures of buoyant fire plumes were measured vertically and compared with the Zukoski model, the Heskestad model, and the McCaffrey model. Predictions by the Heskestad and McCaffrey models were closer to the measured value with average deviation of 18.4% and 18.6%, respectively, while those by the Zukoski model were much lower than the measured value with average deviation of 36.7%. The power law decay index of z was found to increase slightly with fire size, rather than being constant in the models. The coefficient for the variation of ΔT with Q2/3z-5/3it was found to be 20.9 experimentally, near to that of the Heskestad and McCaffrey models.",

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AU - Hu, L. H.

AU - Zhu, S.

AU - Chow, Wan Ki

AU - Huo, R.

AU - Chen, Z. B.

AU - Tang, F.

PY - 2011/1/1

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N2 - The temperatures of buoyant fire plumes were measured vertically and compared with the Zukoski model, the Heskestad model, and the McCaffrey model. Predictions by the Heskestad and McCaffrey models were closer to the measured value with average deviation of 18.4% and 18.6%, respectively, while those by the Zukoski model were much lower than the measured value with average deviation of 36.7%. The power law decay index of z was found to increase slightly with fire size, rather than being constant in the models. The coefficient for the variation of ΔT with Q2/3z-5/3it was found to be 20.9 experimentally, near to that of the Heskestad and McCaffrey models.

AB - The temperatures of buoyant fire plumes were measured vertically and compared with the Zukoski model, the Heskestad model, and the McCaffrey model. Predictions by the Heskestad and McCaffrey models were closer to the measured value with average deviation of 18.4% and 18.6%, respectively, while those by the Zukoski model were much lower than the measured value with average deviation of 36.7%. The power law decay index of z was found to increase slightly with fire size, rather than being constant in the models. The coefficient for the variation of ΔT with Q2/3z-5/3it was found to be 20.9 experimentally, near to that of the Heskestad and McCaffrey models.

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KW - power law decay index

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Vertical temperature profile of a buoyant plume in an atrium

Abstract

Keywords

ASJC Scopus subject areas

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