Multicomponent diffusion and convection in capillary structures

Journal Article · Fri Dec 01 04:00:00 EST 1989 · AIChE Journal (American Institute of Chemical Engineers); (United States)

DOI:https://doi.org/10.1002/aic.690351206· OSTI ID:7071413

Sotirchos, S V ^[1]

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1. Univ. of Rochester, NY (United States)

A previously developed method (Sotirchos and Burganos, 1988) for studying isobaric multicomponent diffusion in a class of capillary networks is extended for application to the problem of convection and diffusion of gaseous mixtures in porous media. The method is used to develop flux models for nonisobaric transport in capillary structures, which are then compared with corresponding [open quotes]three-parameter[close quotes] dusty-gas models. Results for discrete and continuous pore size distributions show that the predictions of the developed flux models depend strongly, both qualitatively, and quantitatively, on the procedure used to average the dusty-gas model equations for a single pore over the pore-size distribution.

• OSTI ID: 7071413
• Journal Information: AIChE Journal (American Institute of Chemical Engineers); (United States), Journal Name: AIChE Journal (American Institute of Chemical Engineers); (United States) Vol. 35:12; ISSN AICEAC; ISSN 0001-1541
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
54 ENVIRONMENTAL SCIENCES
540210* -- Environment
Terrestrial-- Basic Studies-- (1990-)
CAPILLARY FLOW
CONVECTION
DIFFUSION
DISPERSIONS
ENERGY TRANSFER
FLUID FLOW
HEAT TRANSFER
MASS TRANSFER
MATERIALS
MIXTURES
POROUS MATERIALS