| Main Title |
Model for Hysteretic Constitutive Relations Governing Multiphase Flow. 2. Permeability-Saturation Relations. |
| Author |
Lenhard, R. J. ;
Parker, J. C. ;
|
| CORP Author |
Virginia Polytechnic Inst. and State Univ., Blacksburg.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
| Year Published |
1987 |
| Report Number |
EPA/600/J-87/358; |
| Stock Number |
PB88-219845 |
| Additional Subjects |
Ground water ;
Hydrodynamics ;
Soil mechanics ;
Multiphase flow ;
Fluid flow ;
Subsurface investigations ;
Permeability ;
Hysteresis ;
Liquid saturation ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB88-219845 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12p |
| Abstract |
A theoretical model is described for the prediction of relative permeability-saturation (k-S) relations in two-phase (air-water) and three phase (air-oil-water) porous media systems subject to arbitrary saturation paths. Integral expressions for air, water, and oil relative permeabilities are presented. The parametric model for saturation-pressure relations and fluid entrapment is employed in the integral equations to enable derivation of closed-form expressions for air, water, and oil relative permeabilities as functions of current fluid saturations and saturation history. Three-phase k-S relations are calculated for main drainage and imbibition paths for a hypothetical soil to illustrate usage of the model and to evaluate the magnitude of fluid entrapment effects on relative permeabilities. Water permeability-saturation relations are predicted to exhibit mild hysteretic effects except at high saturations, while hysteresis in air permeability-saturation relations is much more pronounced. Predictions of k-S-P relations for a hypothetical NAPL contamination scenario are presented using model parameters determined for a sandy soil by two methods. The results indicate that hysteresis and nonwetting fluid entrapment effects on k-S-P relations may be substantial. Sensitivity to calibration method is found to be small. (Copyright (c) American Geophysical Union, 1987.) |
| Supplementary Notes |
Pub. in Water Resources Research, v23 n12 p2197-2206 Dec 87. See also PB88-219837. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Model for Hysteretic Constitutive Relations Governing Multiphase Flow. 2. Permeability-Saturation Relations. |
| PUB Date Free Form |
c1987 |
| Category Codes |
48F; 48G; 46B |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/15 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
826014850 |
| Origin |
NTIS |
| Type |
CAT |
