Hello, I hope this email finds you well.
I'm trying to use DuMux to perform single and multiphase flow-based upscaling (Darcy scale). This involves running two-phase flow simulations until steady-state is reached, then using the steady-state saturation field to compute effective permeabilities for different fractional flow levels. I managed to implement cell-wise relative permeability and capillary pressures, as well as heterogeneous permeability and porosity fields. However, I'm still struggling to compute boundary fluxes for pressure dirichlet boundary faces. These boundary fluxes will determine the effective permeability for the whole model. Could you point me to an example or code excerpt that computes the total volumetric fluxes for the inlet and outlet boundaries? Thank you, Rafael March.
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