Palacios, A and Bradley, D (2022) Wildfires and the generation of fire whirls. Combustion and Flame, 239. 111664. ISSN 0010-2180
Abstract
The paper first reviews the mode of generation of fire whirls, their properties, and operational regimes, under well-controlled experimental conditions. The situation is different with wildfires. These are uncontrolled and less well understood. A modified analytical approach is described for these conditions. This is based on global energy levels, per unit ground area, for different fuels, and their associated rates of fire spread, under different conditions. These enable regimes of possible fire whirl generation in wildfires to be defined. The associated accuracy is not that of a laboratory flame, but it is probably practically sufficient. Only in two instances were atmospheric fires experimentally controlled. In the remainder, the rate of fire spread was a more meaningful parameter than a burning velocity, and the critical lateral velocity was seldom known accurately. Nevertheless, it was possible to relate it to the heat release rate, with both in dimensionless form.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 The Combustion Institute. Published by Elsevier Inc. This is an author produced version of a paper published in Combustion and Flame. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Fire storms; Fuel Froude number; Critical tangential velocity; Flow number; Fire spread rate; Fire plumes |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 02 Sep 2021 11:00 |
Last Modified: | 22 Aug 2022 00:13 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.combustflame.2021.111664 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:177710 |