5.3 – Advective-Dispersion Equation (ADE) Approach: Conservation of mass in a control volume (just like Richard’s Eqn) Mechanisms: convection, diffusion,

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Presentation transcript:

5.3 – Advective-Dispersion Equation (ADE) Approach: Conservation of mass in a control volume (just like Richard’s Eqn) Mechanisms: convection, diffusion, dispersion Steps in derivation: 1.Mass balance on REV – solute mass conservation 2.Look at flux terms (macro and micro), and add transport processes into solute mass cons’ 3.Add in rxns – decay and adsorpotion

Note: D = Diffusion Coefficient can vary as a function of moisture content