Dispersion in groundwater flow systems
A fundamental flow equation for a mixture of miscible fluids was derived by combining the law of conservation of mass, Darcy's law, and an equation of state describing the pressure-volume-temperature- concentration relationship. The result is an equation involving two dependent variables, pressure and concentration. A relationship for determining concentration was derived by expressing a continuity equation for the dispersed tracer. The problem was formulated on a microscopic basis and averaged over a cross-sectional area of the porous medium to give a macroscopic convective-dispersion equation. ...
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