The Effect of Strong Heterogeneity on the Onset of Convection in a Porous Medium: Periodic and Localized Variation

D Nield, A Kuznetsov, Craig Simmons

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    The effect of strong heterogeneity on the onset of convection induced by a vertical density gradient in a saturated porous medium governed by Darcy's law is investigated. The general case, where there is heterogeneity in both the vertical and horizontal directions, and where there is heterogeneity in permeability, thermal conductivity, and applied temperature gradient, is considered. A computer package has been developed to implement an algorithm giving a criterion for instability, and this is now employed to investigate the case where the variation is of a periodic or localized nature.

    Original languageEnglish
    Pages (from-to)123-139
    Number of pages17
    JournalTransport in Porous Media
    Volume81
    Issue number1
    DOIs
    Publication statusPublished - Jan 2010

    Keywords

    • Computer package
    • Heterogeneity
    • Localized variation
    • Natural convection
    • Periodic variation
    • Stability

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