Численное решение задачи о распространении верхового лесного пожара в сопряженной постановке

Abstract

This paper presents the conjugate formulation of the problem of the crown forest fire spread. It is taken into account the mutual influence of the combustion zone and the atmospheric boundary layer. The turbulent flows as well as physical and chemical processes of the forest canopy are considered. Discrete analogue obtained by finite volume method. The using of method of splitting into physical processes reduces the computing time for solving the problem. The distributions of the key functions in the area under consideration at different times allow to explore the spread of crown forest fire depending on the meteorological conditions and the characteristics of the forest (forest bulk and the moisture content of combustible materials, the presence of heterogeneities -roads, glades, etc.).