Zhiri, A. B.Olayiwola, R. O.Somma Samuel Abu2025-04-152021-10-28http://repository.futminna.edu.ng:4000/handle/123456789/698fire is presented. The equations describing the fractional components of forest fire were carefully studied. The reaction before a forest can burn or before fire can spread must involves fuel, heat and oxygen. The coupled dimensionless equations describing the phenomenon have been decoupled using perturbation method and solved analytically using eigen function expansion technique. The results obtained were graphically discussed and analysed. The study revealed that varying Radiation number and Peclet energy number enhances volume fractions of dry organic substance and moisture while they reduced volume fraction of coke.enCombustioneigen function expansionfirefuelignitionArticle