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  • Saturated and unsaturated water flow in inclines porous media

    Author(s)
    Weeks, SW
    Sander, GC
    Braddock, RD
    Matthews, CJ
    Griffith University Author(s)
    Braddock, Roger D.
    Year published
    2004
    Metadata
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    Abstract
    This paper considers the two-dimensional saturated and unsaturated flow of water through inclined porous media, namely a waste dump or hill slope. Since the partial differential equation governing this water flow transforms from being parabolic to elliptic as the water flow varies from unsaturated to saturated, an iterative, finite differencing scheme is used to develop a numerical solution. The model can be used to investigate the effects that hill slope angle, depth of soil cover and hilltop width have on water accumulation in the dump and the time required for saturation to occur at different areas in the dump domain. The ...
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    This paper considers the two-dimensional saturated and unsaturated flow of water through inclined porous media, namely a waste dump or hill slope. Since the partial differential equation governing this water flow transforms from being parabolic to elliptic as the water flow varies from unsaturated to saturated, an iterative, finite differencing scheme is used to develop a numerical solution. The model can be used to investigate the effects that hill slope angle, depth of soil cover and hilltop width have on water accumulation in the dump and the time required for saturation to occur at different areas in the dump domain. The accuracy and reliability of the computer based solution is tested for two different boundary conditions - (1) no flow on all boundaries (i.e., the internal redistribution of soil moisture to steady state) and (2) a constant rainfall flux on the dump surface. Numerical studies then show the effects of changing the hill slope angle, depth of layer, and dump geometry on the flow characteristics in the dump.
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    Journal Title
    Environmental Modeling and Assessment
    Volume
    9
    DOI
    https://doi.org/10.1023/B:ENMO.0000032095.32056.e2
    Publication URI
    http://hdl.handle.net/10072/5294
    Collection
    • Journal articles

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