Estimation of moisture transport coefficients in porous materials using experimental drying kinetics

Abstract : From experimental drying kinetics, an inverse technique is used to evaluate the moisture transport coefficients in building hygroscopic porous materials. Based on the macroscopic approach developed by Whitaker, a one-dimensional mathematical model is developed to predict heat and mass transfers in porous material. The parameters identification is made by the minimisation of the square deviation between numerical and experimental values of the surface temperature and the average moisture content. Two parameters of an exponential function describing the liquid phase transfer and one parameter relative to the diffusion of the vapour phase are identified. To ensure the feasibility of the estimation method, it is initially validated with cellular concrete and applied to lime paste.
Type de document :
Article dans une revue
Heat and Mass Transfer, Springer Verlag, 2012, vol. 48 (no2), pp. 205-215
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-00718131
Contributeur : Noluenn Chauvin <>
Soumis le : lundi 16 juillet 2012 - 12:12:09
Dernière modification le : jeudi 7 février 2019 - 16:22:43

Identifiants

  • HAL Id : hal-00718131, version 1

Citation

A. Zaknoune, Patrick Glouannec, P. Salagnac. Estimation of moisture transport coefficients in porous materials using experimental drying kinetics. Heat and Mass Transfer, Springer Verlag, 2012, vol. 48 (no2), pp. 205-215. 〈hal-00718131〉

Partager

Métriques

Consultations de la notice

142