The role of extinction on the re-ignition potential of wood-based embers in bushfires

B. Moghtaderi; T. Poespowati; E.M. Kennedy; B.Z. Dlugogorski

doi:10.1071/WF06029

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The role of extinction on the re-ignition potential of wood-based embers in bushfires

Journal article

Peer reviewed

The role of extinction on the re-ignition potential of wood-based embers in bushfires

B. Moghtaderi, T. Poespowati, E.M. Kennedy and B.Z. Dlugogorski

International Journal of Wildland Fire, Vol.16(5), pp.547-555

2007

DOI: https://doi.org/10.1071/WF06029

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Abstract

The re-ignition potential of partially burnt wood-based embers was investigated theoretically by studying their extinction characteristics. An adaptation of Semenov's thermal explosion theory was used in conjunction with a linear stability analysis to determine the critical particle size at which extinction occurs. Particles of various shapes were studied and the analysis was carried out for both thermally thin and thermally thick particles. The results of our analysis indicate that thermally thick embers are less susceptible to extinction than thermally thin ones and, as such, are more prone to re-ignition. The results also show that the extinction of wood embers is strongly affected by the particle temperature, particle shape, and reaction kinetics. The effects of ambient conditions were found to be less pronounced than particle properties.

Details

Title: The role of extinction on the re-ignition potential of wood-based embers in bushfires
Authors/Creators: B. Moghtaderi (Author/Creator) - University of Newcastle Australia
T. Poespowati (Author/Creator) - University of Newcastle Australia
E.M. Kennedy (Author/Creator) - University of Newcastle Australia
B.Z. Dlugogorski (Author/Creator) - University of Newcastle Australia
Publication Details: International Journal of Wildland Fire, Vol.16(5), pp.547-555
Publisher: CSIRO Publishing
Identifiers: 991005541956507891
Copyright: © IAWF 2007.
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Citation topics: 3 Agriculture, Environment & Ecology; 3.40 Forestry; 3.40.1598 Wildfire Dynamics
Web Of Science research areas: Forestry
ESI research areas: Plant & Animal Science