Description

template<class Scalar>
class Dumux::DiffusivityMillingtonQuirk< Scalar >

Relation for the saturation-dependent effective diffusion coefficient.

The material law is:

\[ D_\text{eff,pm} = \phi * S_w * \tau * D \]

with

\[ \tau = \frac{1}{\phi^2} * \left(\phi S_w\right)^{7/3} \]

after Millington and Quirk 1961: Permeability of porous solids [40] and Helmig 1997: Multiphase Flow and Transport Processes in the Subsurface: A Contribution to the Modeling of Hydrosystems, page 129 [27]

Static Public Member Functions
static Scalar	effectiveDiffusivity (const Scalar porosity, const Scalar saturation, const Scalar diffCoeff)
	Returns the effective diffusion coefficient \(\mathrm{[m^2/s]}\) after Millington Quirk.
template<class VolumeVariables>
static Scalar	effectiveDiffusionCoefficient (const VolumeVariables &volVars, const int phaseIdx, const int compIdxI, const int compIdxJ)
	Returns the effective diffusion coefficient \(\mathrm{[m^2/s]}\) after Millington Quirk.

Member Function Documentation

◆ effectiveDiffusionCoefficient()

template<class Scalar>

template<class VolumeVariables>

Scalar Dumux::DiffusivityMillingtonQuirk< Scalar >::effectiveDiffusionCoefficient	(	const VolumeVariables &	volVars,
		const int	phaseIdx,
		const int	compIdxI,
		const int	compIdxJ )

inlinestatic

Returns the effective diffusion coefficient \(\mathrm{[m^2/s]}\) after Millington Quirk.

Parameters

volVars	The Volume Variables
phaseIdx	the index of the phase
compIdxI	the component index i
compIdxJ	the component index j

◆ effectiveDiffusivity()