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RECORD NUMBER: 48 OF 94

OLS Field Name OLS Field Data
Main Title Measurement and Prediction of Saturation-Pressure Relationships in Three-Phase Porous Media Systems.
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-87/352;
Stock Number PB88-218334
Additional Subjects Capillary pressure ; Porous materials ; Sands ; Saturated soils ; Fluid boundaries ; Air-water interactions ; Interfacial tension ; Liquid interfaces ; Reprints ; Brooks-Corey retention function ; Van Genuchter retention function ; Organic loadings
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB88-218334 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/29/1988
Collation 20p
Abstract
Scaled multiphase versions of the Brooks-Corey and van Genuchten retention functions were used to describe saturation-capillary pressure curves measured in air-water, air-organic liquid and organic liquid-water systems in a sandy porous medium for four organic liquids during monotonic wetting phase drainage. Scaling was achieved by a linear transformation of capillary pressures using scaling coefficients which are shown to be closely predicted by ratios of measured interfacial tensions, providing that the latter are measured on fluids having contacted the porous media system. The multiphase version for the van Genuchten function described the experimental data with slightly greater precision than the Brooks-Corey function for all four organic liquid systems. A technique is introduced to ensure that when two-phase saturation-capillary pressure measurements are used to predict fluid behavior in three-phase systems, the estimated parameters imply an invariate pore geometry pertinent to the description of a rigid porous medium. (Copyright (c) 1987 Elsevier Science Publishers B.V.)