Study on the numerical model of 2-dimensional surface flame spread due to wind and slope in forest fire

Kim, D. ORCID: https://orcid.org/0000-0001-7626-4238 (2012). Study on the numerical model of 2-dimensional surface flame spread due to wind and slope in forest fire. In: Proceedings of the 4th Asian Joint Workshop on Thermophysics and Fluid Science, 14-17 October 2012.

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Abstract

The characteristics of the spread of a forest fire are generally related to combustibles, geographical features, and metrological conditions such as wind. Analysis of heat energy transmission by the stages is commonly used to create a prediction model. Numerical values in this analysis are generated in each stage when forest fire is developing. With this methodology, the purpose of this study is to develop a 2-dimensinal velocity model of flame spread on surface fire in forest. Variable values were produced in numeric by testing fuel combustion and flame characteristics. An algorithm was developed to be able to perform computational analysis of flame spread via heat transfer analysis of the flame-forms. In this study, algorithm of 2-dimensional flame spread was developed base on heat transfer mechanism in concerning of flame tilt by wind and slope. The experimental and numerically analyzed values for surface fuel beds of P. densiflora were compared. The result showed that the mean error rate of their velocities was approximately 12.15%. Thus, the proposed equation and velocity model of 2-dimensional flame spread are expected to be effective in calculating the flame properties and in predicting velocity of surface flame spread.

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