A dimensional analysis of forest fuel layer ignition model: Application to the ignition of pine needle litters

Abstract : This paper deals with the physical modelling of forest fuel layer ignition. A model based on momentum, fluid and solid phase energy equations is written for a fuel layer and a dimensional analysis is performed. This analysis allows to enlighten two relevant dimensionless groups regarding the dimensionless time to ignition of a fuel layer and also provides a suited scaling for the fluid velocity inside the fuel layer during ignition. A correlation for the time to ignition is then fitted on experimental data obtained using a FM-Global Fire Propagation Apparatus (FPA) for different pine species with a closed basket. A good agreement is found, emphasizing the relevance of the dimensionless groups and the thermally thick behaviour of the solid particles during the ignition process under incident radiant heat flux as low as 8 − 12kW.m −2 .
Type de document :
Article dans une revue
Journal of Fire Sciences, SAGE Publications, 2015, pp.NC. 〈10.1177/ToBeAssigned〉
Liste complète des métadonnées

Littérature citée [32 références]  Voir  Masquer  Télécharger

https://hal.archives-ouvertes.fr/hal-01157866
Contributeur : Aymeric Lamorlette <>
Soumis le : lundi 1 juin 2015 - 11:51:42
Dernière modification le : jeudi 18 janvier 2018 - 02:21:16
Document(s) archivé(s) le : mardi 15 septembre 2015 - 07:58:10

Fichier

Dim_litter_ig_V_HAL.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Aymeric Lamorlette, Mohamad El Houssami, Jan C. Thomas, Albert Simeoni, Dominique Morvan. A dimensional analysis of forest fuel layer ignition model: Application to the ignition of pine needle litters. Journal of Fire Sciences, SAGE Publications, 2015, pp.NC. 〈10.1177/ToBeAssigned〉. 〈hal-01157866〉

Partager

Métriques

Consultations de la notice

358

Téléchargements de fichiers

302