Abstract
Heterogeneity is typically the result of space variability of soil parameters at different scales. Soil anisotropy may be defined as the spatial persistence in some direction only, across coarse-grid elements, of heterogeneous structures with different characteristic lengths in different directions. One can account for the effect of these structures by upscaling soil properties. Analyzing flow in a strongly anisotropic structured soil at different scales evidences how transverse dispersion reduces to a subscale process, leading to mixing within the conductive structures.
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Ursino, N. Modeling Media with Oriented Structures. Transport in Porous Media 55, 137–151 (2004). https://doi.org/10.1023/B:TIPM.0000010696.86778.91
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DOI: https://doi.org/10.1023/B:TIPM.0000010696.86778.91