OGS

The flow process is described by
\[ \phi \frac{\partial \rho_w}{\partial p} \frac{\partial p}{\partial t} S  \phi \rho_w \frac{\partial S}{\partial p_c} \frac{\partial p_c}{\partial t}  \nabla \cdot \left[\rho_w \frac{k_{\mathrm{rel}} \kappa}{\mu} \nabla \left( p + \rho_w g z \right)\right]  Q_p = 0, \]
where
Here it is assumed, that
The capillary pressure is given by
\[ p_c = \frac{\rho_w g}{\alpha} \left[S_{\mathrm{eff}}^{\frac{1}{m}}  1\right]^{\frac{1}{n}} \]
and the effective saturation by
\[ S_{\mathrm{eff}} = \frac{SS_r}{S_{\max}  S_r} \]
The mass transport process is described by
\[ \phi R \frac{\partial C}{\partial t} + \nabla \cdot \left(\vec{q} C  D \nabla C \right) + \phi R \vartheta C  Q_C = 0 \]
where
For the hydrodynamic dispersion tensor the relation
\[ D = (\phi D_d + \beta_T \\vec{q}\) I + (\beta_L  \beta_T) \frac{\vec{q} \vec{q}^T}{\\vec{q}\} \]
is implemented, where \(D_d\) is the molecular diffusion coefficient, \(\beta_L\) the longitudinal dispersivity of chemical species, and \(\beta_T\) the transverse dispersivity of chemical species.
The implementation uses a monolithic approach, i.e., both processes are assembled within one global system of equations.
The advective term of the concentration equation is given by the Richards flow process, i.e., the concentration distribution depends on darcy velocity of the Richards flow process. On the other hand the concentration dependencies of the viscosity and density in the groundwater flow couples the unsaturated H process to the C process.
Note: This list has been automatically extracted from OGS's benchmark tests (ctests). Therefore it might not be exhaustive, but it should give users a good overview about which properties they can/have to use with this process. Probably most of the properties occurring in this list are mandatory.
The list might contain different property <type>
s for some property <name>
to illustrate different possibilities the users have.
<type>
[case] AqueousLiquid<name>
decay_rate<type>
[case] Parameter<name>
pore_diffusion<type>
[case] Parameter<name>
retardation_factor<type>
[case] Parameter<name>
density<type>
[case] Constant<name>
viscosity<type>
[case] Constant<name>
capillary_pressure<type>
[case] CapillaryPressureVanGenuchten<name>
longitudinal_dispersivity<type>
[case] Parameter<name>
permeability<type>
[case] Parameter<name>
porosity<type>
[case] Parameter<name>
relative_permeability<type>
[case] RelativePermeabilityVanGenuchten<name>
saturation<type>
[case] SaturationVanGenuchten<name>
storage<type>
[case] Constant<name>
transversal_dispersivity<type>
[case] ParameterNo additional info.