학술논문

Analytical and numerical insights into wildfire dynamics: Exploring the advection-diffusion-reaction model
Document Type
Working Paper
Source
Subject
Mathematics - Dynamical Systems
35K57, 35Q80, 65M12, 92F05
Language
Abstract
Understanding the dynamics of wildfire is crucial for developing management and intervention strategies. Mathematical and computational models can be used to improve our understanding of wildfire processes and dynamics. This paper presents a systematic study of a widely used advection-diffusion-reaction wildfire model with non-linear coupling. The importance of single mechanisms is discovered by analysing hierarchical sub-models. Numerical simulations provide further insight into the dynamics. As a result, the influence of wind and model parameters such as the bulk density or the heating value on the wildfire propagation speed and the remaining biomass after the burn are assessed. Linearisation techniques for a reduced model provide surprisingly good estimates for the propagation speed in the full model.