A Study of Three-Dimensional Preferential Flow Using a Web-Based Simulation System
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Results of computational experiments using a web-based three-dimensional multi-reaction transport simulation model, modified to include macroporosity, are presented. Two types of soil column experiments are simulated: one in which the soil matrix is devoid of macropores and the other in which preferential flow occurs through randomly positioned cells that simulate preferential paths. The advection-dispersion equation is solved in both environments for two different input load concentration cases at the top of the simulated soil column: one-point-source and two-point-source. It is found that the vertical Darcy fluxes in the simulated soil matrix with macropores are up to four times as high as those in the corresponding homogeneous soil column.
KeywordsPorous Medium Soil Column Preferential Flow Preferential Path Source Case
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