Capillary Flow in the Geotechnical Centrifuge

    Volume 22, Issue 4 (December 1999)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Page Count: 9


    Lord, AE
    Drexel University, Philadelphia, PA

    (Received 24 September 1997; accepted 4 June 1999)

    Abstract

    A “bundle of capillaries” approach is used to model unsaturated soils. Movement of fluid is approximated by employing a simple Poiseuille's capillary flow mathematical model. It is found that the centrifuge model flow time is 1/n2 times that for the pertinent prototype flow time. Here model acceleration = n × acceleration of gravity (i.e., a = ng). This result applies for: 1. Capillary rise at an arbitrary angle to the horizontal. 2. Horizontal capillary flow. 3. Downward capillary flow (infiltration) at an arbitrary angle. 4. Vertical drainage at an arbitrary angle.

    This is the same centrifuge model scale factor as for advection, diffusion, and dispersion.


    Paper ID: GTJ11241J

    DOI: 10.1520/GTJ11241J

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    Author
    Title Capillary Flow in the Geotechnical Centrifuge
    Symposium , 0000-00-00
    Committee D18