Titre :
|
Modelling water flow and solute transport in heterogeneous soils: A review of recent approaches
|
Auteurs :
|
J. Feyen ;
D. Jacques ;
A. Timmerman ;
J. Vanderborght
|
Type de document :
|
article/chapitre/communication
|
Année de publication :
|
1998
|
Format :
|
p. 231-256
|
Langues:
|
= Anglais
|
Catégories :
|
HYDROLOGIE ET HYDRAULIQUE
|
Mots-clés:
|
SOL
;
SOLUTE
;
TRANSPORT DE CONTAMINANT
;
MILIEU NON SATURE
;
MODELISATION
;
MACROPOROSITE
;
HYDRODYNAMIQUE
|
Résumé :
|
A quantitative description of water flow and solute transport in the unsaturated zone of the soil is required to predict the impact of human influences on the environment. This paper starts with the basic concepts of the mathematical descriptions of transport processes in homogeneous media. However, water flow and solute transport in natural soils are significantly influenced by the occurrence of (1) macropores and structured elements (micro-heterogeneity), (2) spatial variability of soil properties (macro-heterogeneity) or (3) a combination of (1) and (2). In these cases,, the classical representations of water flow and solute transport are not adequate. The paper presents an overview of some recent modelling concepts dealing with water flow and solute transport in heterogeneous media. For each model, we first introduce the underlying physical concept, and then translate the concept into a mathematical model. Each model is illustrated for a specific water flow and solute transport problem. Finally, some applications of the models are discussed.
|
Source :
|
Journal of Agricultural Engineering Research, vol.70
|