Numerical simulations of convection cells in sedimentary basins with application to geothermal energy

C. Detouraay, Bruce Hobbs

    Research output: Chapter in Book/Conference paperConference paperpeer-review

    Abstract

    Copyright (2014) ARMA, American Rock Mechanics Association This paper presents a numerical implementation of the coupled hydro-thermal-mechanical logic in the commercial code FLAC3D. The numerical model uses the Boussinesq approximation in which fluid density variations are neglected in all but the body force term of the equation of motion. The numerical solution is compared to an analytical solution (obtained using stability analysis) for a convection cell in a confined layer heated from below. Numerical simulation examples are presented to illustrate the development of various cell configurations in a layered system heated from below. The numerical model can be applied to the analysis of geothermal groundwater convection in sedimentary basins. The study of the convection mechanism is important because it provides a natural heat exchanger that can be accessed without engineered hydraulic fracturing because of high natural permeability.
    Original languageEnglish
    Title of host publication48th US Rock Mechanics/Geomechanics Symposium
    Place of PublicationMinneapolis, USA
    PublisherAmerican Rock Mechanics Association
    Pages518-524
    Volume1
    ISBN (Print)9781634395236
    Publication statusPublished - 2014
    Event48th U.S. Rock Mechanics/Geomechanics Symposium - Minneapolis, United States
    Duration: 1 Jun 20144 Jun 2014
    Conference number: 48

    Conference

    Conference48th U.S. Rock Mechanics/Geomechanics Symposium
    Country/TerritoryUnited States
    CityMinneapolis
    Period1/06/144/06/14

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