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DUNE for Multi-{Phase, Component, Scale, Physics, ...} flow and transport in porous media
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Dumux::DiffusivityConstantTortuosity< Scalar > Class Template Reference

Relation for the saturation-dependent effective diffusion coefficient. More...

#include <dumux/material/fluidmatrixinteractions/diffusivityconstanttortuosity.hh>

Description

template<class Scalar>
class Dumux::DiffusivityConstantTortuosity< Scalar >

Relation for the saturation-dependent effective diffusion coefficient.

The material law is:

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

with a constant tau.

The default value is 0.5, empirically obtained in Carman 1937: Fluid flow through granular beds [12] Additionally, Bear 1972 [9] mentions values 0.4 and in the range of 0.56 to 0.8.

Static Public Member Functions

template<class VolumeVariables >
static Scalar effectiveDiffusionCoefficient (const VolumeVariables &volVars, const int phaseIdx, const int compIdxI, const int compIdxJ)
 Returns the effective diffusion coefficient \(\mathrm{[m^2/s]}\) based on a constant tortuosity value. More...
 

Member Function Documentation

◆ effectiveDiffusionCoefficient()

template<class Scalar >
template<class VolumeVariables >
static Scalar Dumux::DiffusivityConstantTortuosity< Scalar >::effectiveDiffusionCoefficient ( const VolumeVariables &  volVars,
const int  phaseIdx,
const int  compIdxI,
const int  compIdxJ 
)
inlinestatic

Returns the effective diffusion coefficient \(\mathrm{[m^2/s]}\) based on a constant tortuosity value.

Parameters
volVarsThe Volume Variables
phaseIdxthe index of the phase
compIdxIthe component index i
compIdxJthe component index j

The documentation for this class was generated from the following file: