Research

Linear and nonlinear convection in porous media between coaxial cylinders


Reference:

Bringedal, C., Berre, I., Nordbotten, J. M. and Rees, D. A. S., 2011. Linear and nonlinear convection in porous media between coaxial cylinders. Physics of Fluids, 23 (9), 094109.

Related documents:

[img]
Preview
PDF (Rees_Phys-Fluids_2011.pdf) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (4MB) | Preview

    Official URL:

    http://dx.doi.org/10.1063/1.3637642

    Abstract

    We uncover novel features of three-dimensional natural convection in porous media by investigating convection in an annular porous cavity contained between two vertical coaxial cylinders. The investigations are made using a linear stability analysis, together with high-order numerical simulations using pseudospectral methods to model the nonlinear regime. The onset of convection cells and their preferred planform are studiedthe stability of the modes with respect to different types of perturbation is investigated. We also examine how variations in the Rayleigh number affect the convection modes and their stability regimes. Compared with previously published data, we show how the problem inherits an increased complexity regarding which modes will be obtained. Some stable secondary modes or mixed modes have been identified and some overlapping stability regions for different convective modes are determined.

    Details

    Item Type Articles
    CreatorsBringedal, C., Berre, I., Nordbotten, J. M. and Rees, D. A. S.
    DOI10.1063/1.3637642
    DepartmentsFaculty of Engineering & Design > Mechanical Engineering
    Research CentresAerospace Engineering Research Centre
    Publisher StatementRees_Phys-Fluids_2011.pdf: Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Bringedal, C., Berre, I., Nordbotten, J. M. and Rees, D. A. S., 2011. Linear and nonlinear convection in porous media between coaxial cylinders. Physics of Fluids, 23 (9), 094109 and may be found at http://dx.doi.org/10.1063/1.3637642
    RefereedYes
    StatusPublished
    ID Code26589

    Export

    Actions (login required)

    View Item

    Document Downloads

    More statistics for this item...