This model implements a variant of the extended Richards' equation for quasi-twophase flow (see e.g. Vanderborght et al. 2017). More...

#include <dune/common/fvector.hh>
#include <dumux/common/properties.hh>
#include <dumux/porousmediumflow/immiscible/localresidual.hh>
#include <dumux/porousmediumflow/compositional/switchableprimaryvariables.hh>
#include <dumux/material/fluidmatrixinteractions/diffusivitymillingtonquirk.hh>
#include <dumux/material/fluidmatrixinteractions/2p/thermalconductivity/somerton.hh>
#include <dumux/material/components/simpleh2o.hh>
#include <dumux/material/fluidsystems/h2oair.hh>
#include <dumux/material/fluidstates/immiscible.hh>
#include <dumux/porousmediumflow/properties.hh>
#include <dumux/porousmediumflow/nonisothermal/model.hh>
#include <dumux/porousmediumflow/nonisothermal/indices.hh>
#include <dumux/porousmediumflow/nonisothermal/iofields.hh>
#include <dumux/porousmediumflow/richards/balanceequationopts.hh>
#include <dumux/porousmediumflow/richards/model.hh>
#include <dumux/porousmediumflow/richards/velocityoutput.hh>
#include "indices.hh"
#include "volumevariables.hh"
#include "iofields.hh"
#include "localresidual.hh"

Description

The extended Richards' equation

\[ \frac{\partial (\phi S_w \varrho_w) }{\partial t} + \frac{\partial (\phi (1-S_w)\varrho_n X_n^w ) }{\partial t} - \nabla \cdot \left\lbrace \varrho_w \frac{k_{rw}}{\mu_w} \; \mathbf{K} \; \left( \text{\nabla} p_w - \varrho_w \textbf{g} \right) + {\bf D_{n, pm}^w} \varrho_n \nabla X^w_n \right\rbrace = q_w, \]

where:

\( \phi \) is the porosity of the porous medium,
\( S_w \) represents the saturation of the wetting-phase,
\( \varrho_w \) is the mass density of the wetting phase,
\( \varrho_n \) is the mass density of the non-wetting phase,
\( k_{rw} \) is the relative permeability of the wetting phase,
\( \mu_w \) is the dynamic viscosity of the wetting phase,
\( \mathbf{K} \) is the intrinsic permeability tensor,
\( p_w \) is the pressure of the wetting phase,
\( \mathbf{g} \) is the gravitational acceleration vector,
\( \bf D_{n,pm}^{w} \) is the effective diffusivity of water in the non-wetting phase,
\( X_n^w \) is the mass fraction of water in the non-wetting phase,
\( q_w \) is a source or sink term in the wetting phase,

additionally models water vapor diffusion in the gas phase. The model is derived based on the two-phase flow equations based on the assumption that the gas phase does not move but and remains at constant pressure.

Classes
struct	Dumux::ExtendedRichardsModelTraits
	Specifies a number properties of the extended Richards model. More...

struct	Dumux::ExtendedRichardsVolumeVariablesTraits< PV, FSY, FST, SSY, SST, PT, MT, DT, EDM >
	Traits class for the Richards model. More...

struct	Dumux::Properties::TTag::ExtendedRichards

struct	Dumux::Properties::TTag::ExtendedRichardsNI

struct	Dumux::Properties::LocalResidual< TypeTag, TTag::ExtendedRichards >
	The local residual operator. More...

struct	Dumux::Properties::IOFields< TypeTag, TTag::ExtendedRichards >
	Set the vtk output fields specific to this model. More...

struct	Dumux::Properties::ModelTraits< TypeTag, TTag::ExtendedRichards >
	The model traits. More...

struct	Dumux::Properties::VolumeVariables< TypeTag, TTag::ExtendedRichards >
	Set the volume variables property. More...

struct	Dumux::Properties::EffectiveDiffusivityModel< TypeTag, TTag::ExtendedRichards >
	Use the model after Millington (1961) for the effective diffusivity. More...

struct	Dumux::Properties::PrimaryVariables< TypeTag, TTag::ExtendedRichards >
	The primary variables vector for the richards model. More...

struct	Dumux::Properties::ModelTraits< TypeTag, TTag::ExtendedRichardsNI >
	set non-isothermal model traits More...

struct	Dumux::Properties::IOFields< TypeTag, TTag::ExtendedRichardsNI >
	Set the vtk output fields specific to th non-isothermal model. More...

struct	Dumux::Properties::VolumeVariables< TypeTag, TTag::ExtendedRichardsNI >
	Set the volume variables property. More...

struct	Dumux::Properties::ThermalConductivityModel< TypeTag, TTag::ExtendedRichardsNI >
	Somerton is used as default model to compute the effective thermal heat conductivity. More...

Namespaces
namespace	Dumux

namespace	Dumux::Properties
	The energy balance equation for a porous solid.

namespace	Dumux::Properties::TTag
	Type tag for numeric models.

Include dependency graph for porousmediumflow/richardsextended/model.hh:

Description

Classes

Namespaces