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    Evaluation of the applicability of the dual-domain mass transfer model in porous media containing connected high-conductivity channels

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    Issue Date
    2007-12-20
    Author
    Liu, Gaisheng
    Zheng, Chunmiao
    Gorelick, Steven M.
    Publisher
    American Geophysical Union
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    [1] This paper evaluates the dual-domain mass transfer (DDMT) model to represent transport processes when small-scale high-conductivity (K) preferential flow paths (PFPs) are present in a homogenous porous media matrix. The effects of PFPs upon solute transport were examined through detailed numerical experiments involving different realizations of PFP networks, PFP/matrix conductivity contrasts varying from 10:1 to 200:1, different magnitudes of effective conductivities, and a range of molecular diffusion coefficients. Results suggest that the DDMT model can reproduce both the near-source peak and the downstream low-concentration spreading observed in the embedded dendritic network when there are large conductivity contrasts between high-K PFPs and the low-K matrix. The accuracy of the DDMT model is also affected by the geometry of PFP networks and by the relative significance of the diffusion process in the networkmatrix system.
    Description
    This is the published version. Copyright American Geophysical Union
    URI
    http://hdl.handle.net/1808/19270
    DOI
    https://doi.org/10.1029/2007WR005965
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    • Kansas Geological Survey Scholarly Works [39]
    Citation
    Liu, Gaisheng, Chunmiao Zheng, and Steven M. Gorelick. "Evaluation of the Applicability of the Dual-domain Mass Transfer Model in Porous Media Containing Connected High-conductivity Channels." Water Resources Research Water Resour. Res. 43.12 (2007): n. pag. DOI:10.1029/2007WR005965

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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