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Buoyancy-driven turbulent diffusion flames

โœ Scribed by Vedat S. Arpaci; Ahmet Selamet

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
793 KB
Volume
86
Category
Article
ISSN
0010-2180

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โœฆ Synopsis

A fundamental dimensionless number for pool fires, is proposed. Here o n and Ra~ denote a flame Schmidt number and a flame Rayleigh number. The sublayer thickness of a turbulent pool fire, 7ยข, is shown in terms of II~ to be where / is an integral scale, The fuel consumption in a turbulent pool fire expressed in terms of r/~ (H~) and correlated by the experimental data leads to m' 0.15B

where p is the density, D the mass diffusivity, Ra the usual Rayleigh number, and B the transfer number. The model agrees well with a previous model based on the stagnant film hypothesis.

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