|
Titre :
|
Simulation of organic liquid flow in porous media using estimated and measured transport properties
|
|
Auteurs :
|
A. Demond ;
K. Rathfelder ;
L. Abriola
|
|
Type de document :
|
article/chapitre/communication
|
|
Année de publication :
|
1996
|
|
Format :
|
P.223-239
|
|
Langues:
|
= Anglais
|
|
Catégories :
|
DECHETS
|
|
Mots-clés:
|
DECHET ORGANIQUE
;
ECOULEMENT EN MILIEU POREUX
;
ECOULEMENT DIPHASIQUE
;
SIMULATION
;
TRANSPORT DE CONTAMINANT
|
|
Résumé :
|
Many numerical models which describe the movement of a separate organic liquid phase in the subsurface require information about the relationships between capillary pressure and saturation, and between relative permeability and saturation. An evaluation of the information available for these relationships suggests that substantial discrepancies may be introduced into simulations if estimated, rather than measured, data are employed. The purpose of this study was to quantify these deviations. Two-phase displacement simulations were performed in one and two dimensions for several organic liquid-water systems. Both constant-head and constant-flux boundary conditions were employed at a variety of flow rates and time scales, using both measurements and estimates of capillary pressure and relative permeability for a sandy aquifer material. The results demonstrate that the use of estimated transport relationships produces significantly different predictions of organic liquid migration.
|
|
Source :
|
Journal of Contaminant Hydrology, vol Vol 22,
|
