Journal of Porous Media

ISSN for PRINT: 1091-028X

For Online Access

Best Paper Award Selection - Editorial Board Site

2003, Volume6

J. J. Valencia-Lopez
Division de Ciencias Basicas e Ingenieria, Universidad Autonoma, Metropolitana-Iztapalapa, Apartado Postal 55-534, 09340 Mexico D.F., Mexico and Instituto Mexicano del Petroleo, Eje Central Lazaro Cardenas 152, Mexico D.F. 07730 Mexico

G. Espinosa-Paredes
Division de Ciencias Basicas e Ingenieria, Universidad Autonoma, Metropolitana-Iztapalapa, Apartado Postal 55-534, 09340 Mexico D.F., Mexico

J. Alberto Ochoa-Tapia
División de Ciencias Básicas e Ingeniería, Universidad Autónoma, Metropolitana-Iztapalapa, Apartado Postal 55-534, 09340 México D.F., México

The mass transfer condition that applies at the boundary between a porous medium (the w region) and a homogeneous fluid (the h region) is developed as a jump condition based on the nonlocal form of the volume-averaged mass transport equation that is valid within the boundary region. Outside the boundary region this nonlocal form reduces to the classic volume-averaged transport equation in the w region and to the point equation in the h region, respectively. The jump condition takes the form of a surface transport equation that contains terms representing the excess surface accumulation, convection, diffusion, adsorption, and a nonequilibrium source term, in addition to a term representing the exchange with the surrounding regions. When the excess surface terms are represented using dimensionless adjustable parameters, the jump condition can be expressed as follows:

DOI: 10.1615/JPorMedia.v6.i1.20 Download article, 17 pages

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