Oscillation-Free Methods for Modeling Fluid-Porous Interfaces Using Segregated Solvers on Unstructured Grids

M. Staniç, M. Nordlund, Arkadiusz K. Kuczaj, E.M.A. Frederix, Bernardus J. Geurts

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

    Abstract

    Porous media flows can be found in a large number of fields ranging from engineering to medical applications. A volume-averaged approach to simulating porous media is often used because of its practicality and computational efficiency. Derivation of the volume-averaged porous flow equations introduces additional porous resistance terms to the momentum equation. When discretized these porous resistance terms create a body force discontinuity at the porous-fluid interface, which may lead to spurious oscillations if not accounted for properly. A variety of numerical techniques has been proposed to solve this problem, but few of them have concentrated on collocated grids and segregated solvers, which have wide applications in academia and industry. In this work we discuss the source of the spurious oscillations, quantify their amplitude and apply interface treatments methods that successfully remove the oscillations. The interface treatment methods are tested in a variety of realistic scenarios, including the porous plug and Beaver-Joseph test cases and show excellent results, minimizing or entirely removing the spurious oscillations at the porous-fluid interface.
    Original languageUndefined
    Title of host publicationProceedings of the 67th APS-DFD Meeting
    Place of PublicationMaryland
    PublisherAmerican Physical Society
    Pages-
    Publication statusPublished - 28 Nov 2014
    Event67th Annual Meeting of the APS Division of Fluid Dynamics, APS-DFD 2014 - San Francisco, United States
    Duration: 23 Nov 201425 Nov 2014
    Conference number: 67

    Publication series

    Name
    ISSN (Print)0003-0503

    Conference

    Conference67th Annual Meeting of the APS Division of Fluid Dynamics, APS-DFD 2014
    Abbreviated titleAPS-DFD
    CountryUnited States
    CitySan Francisco
    Period23/11/1425/11/14

    Keywords

    • METIS-309822
    • EWI-25582

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