Darcy multi-domain approach for integrated surface/subsurface hydrologic models

Sylvain WEILL, Emmanuel MOUCHE & Sylvain WEILL
A Darcy multi-domain approach for modeling surface and subsurface hydrologic processes is presented. The diffusive wave approximation is used to model runoff. The resulting equation is formulated as a Darcy nonlinear one. Therefore, the water dynamics in the three physical domains, ground surface, vadose zone and saturated zone, is described through a single Darcy nonlinear equation with domain-dependent parameters. This multi-domain Darcy equation is solved with Mixed Hybrid Finite Element formulation. The time discretisation is...
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