Effect of property variation and modelling on convection in a fluid overlying a porous layer
Author:
- 28 November 2001
- journal article
- research article
- Published by Wiley in International Journal for Numerical and Analytical Methods in Geomechanics
- Vol. 26 (1) , 75-97
Abstract
An accurate computational analysis is presented for the onset of thermal convection in a two‐layer system which is comprised of a saturated layer of porous material described by Darcy's law, over which lies a layer of the same saturating fluid. The two‐layer system is heated from below and the upper (fluid) surface is allowed to be fixed or stress free. The onset of convection may have a bi‐modal nature in which convection may be dominated by the porous medium or by the fluid depending on the depths of the relative layers, but this is strongly controlled by material parameters. The effect of variation of relevant fluid and porous material properties is investigated in detail, as is the effect of the interface boundary condition between the fluid and the porous medium. Copyright © 2001 John Wiley & Sons, Ltd.Keywords
This publication has 32 references indexed in Scilit:
- Models for convection in thawing porous media in support for the subsea permafrost equationsJournal of Geophysical Research: Solid Earth, 1999
- Convection in Porous Media1999
- Modelling the Effect of Surface Tension on the Onset of Natural Convection in a Saturated Porous MediumTransport in Porous Media, 1998
- Onset of bouyancy-driven convection in superposed reacting fluid and porous layersJournal of Engineering Mathematics, 1998
- The limitations of the Brinkman-Forchheimer equation in modeling flow in a saturated porous medium and at an interfaceInternational Journal of Heat and Fluid Flow, 1991
- Onset of Finger Convection in a Horizontal Porous Layer Underlying a Fluid LayerJournal of Heat Transfer, 1988
- Multiphase Flow in Porous Media1988
- Collocation Techniques for Modeling Compositional Flows in Oil Reservoirs1984
- The boundary correction for the Rayleigh-Darcy problem: limitations of the Brinkman equationJournal of Fluid Mechanics, 1983
- Onset of convection in a fluid layer overlying a layer of a porous mediumJournal of Fluid Mechanics, 1977