Skip to Main Content
Simulation study of grass fire using a physics-based model: striving towards numerical rigour and the effect of grass height on the rate of spreadAuthor(s): K. A. M. Moinuddin; D. Sutherland; William Mell
Source: International Journal of Wildland Fire. 27(12): 800-814.
Publication Series: Scientific Journal (JRNL)
Station: Pacific Northwest Research Station
Download Publication (1.0 MB)
DescriptionGrid-independent rate of spread results from a physics-based simulation are presented. Previously, such a numerical benchmark has been elusive owing to computational restrictions. The grid-converged results are used to systematically construct correlations between the rate of spread (RoS) and both wind speed and grass height, separately. The RoS obtained from the physics-based model is found to be linear with wind speed in the parameter range considered. When wind speed is varied, the physics-based model predicts faster RoS than the Mk III and V (McArthur) models (Noble et al. 1980) but slower than the CSIRO model (Cheney et al. 1998). When the grass height is varied keeping the bulk density constant, the fire front changes from a boundary layer flame mode to plume flame mode as the grass height increases. Once the fires are in plume mode, a higher grass height results in a larger heat release rate of the fire but a slower RoS.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMoinuddin, K. A. M.; Sutherland, D.; Mell, W. 2018. Simulation study of grass fire using a physics-based model: striving towards numerical rigour and the effect of grass height on the rate of spread. International Journal of Wildland Fire. 27(12): 800-814. https://doi.org/10.1071/WF17126
KeywordsAtmospheric boundary layer, operational model, physics-based modelling, wildland fire, wind speed
- Which grass is best?
- Rainfall interception by annual grass and chaparral . . . losses compared
- Influence of livestock grazing on C sequestration in semi-arid mixed-grass and short-grass rangelands
XML: View XML