Dumux::DiffusivityConstantTortuosity< Scalar > Class Template Reference

Relation for the effective diffusion coefficient with constant tortuosity. More...

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

Description

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

Constant Tortuosity

For DiffusivityConstantTortuosity, $\tau =\text{const.}$, with default value 0.5, empirically obtained by Carman [20]. The value can be changed at runtime by setting parameter "SpatialParams.Tortuosity". This will change the value of $\tau$, and therefore the effective diffusion coefficient wherever the function effectiveDiffusionCoefficient is used.

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 ( ${\mathrm{m}}^2/\mathrm{s}$) 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 ( ${\mathrm{m}}^2/\mathrm{s}$) of component $\kappa$ (index compIdxI) in phase $\alpha$ based on a constant tortuosity coefficient: $D_{\text{eff},\alpha }^{\kappa }=\varphi S_{\alpha }\tau D_{\alpha }^{\kappa }$.

Parameters

volVars	The volume variables
phaseIdx	the index of phase $\alpha$
compIdxI	the component index i (the component diffusing in phase $\alpha$)
compIdxJ	the component index j (the main component of phase $\alpha$)

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

• diffusivityconstanttortuosity.hh