Material to calculate Brooks-Corey relative permeability of an arbitrary phase given the effective saturation and exponent of that phase. More...

#include <PorousFlowRelativePermeabilityBC.h>

Inheritance diagram for PorousFlowRelativePermeabilityBC:

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Public Member Functions
	PorousFlowRelativePermeabilityBC (const InputParameters &parameters)

Protected Member Functions
virtual Real	relativePermeability (Real seff) const override
	Relative permeability equation (must be overriden in derived class) More...

virtual Real	dRelativePermeability (Real seff) const override
	Derivative of relative permeability with respect to effective saturation. More...

virtual void	computeQpProperties () override

virtual Real	effectiveSaturation (Real saturation) const
	Effective saturation of fluid phase. More...

Protected Attributes
const Real	_lambda
	Brooks-Corey exponent lambda. More...

const bool	_is_nonwetting
	Flag that is set to true if this is the non-wetting (gas) phase. More...

const Real	_scaling
	Relative permeability is multiplied by this quantity. More...

const MaterialProperty< std::vector< Real > > &	_saturation
	Saturation material property. More...

MaterialProperty< Real > &	_relative_permeability
	Relative permeability material property. More...

MaterialProperty< Real > &	_drelative_permeability_ds
	Derivative of relative permeability wrt phase saturation. More...

const Real	_s_res
	Residual saturation of specified phase. More...

const Real	_sum_s_res
	Sum of residual saturations over all phases. More...

const Real	_dseff_ds
	Derivative of effective saturation with respect to saturation. More...

const unsigned int	_phase_num
	Phase number of fluid. More...

const std::string	_phase
	Stringified fluid phase number. More...

Detailed Description

Material to calculate Brooks-Corey relative permeability of an arbitrary phase given the effective saturation and exponent of that phase.

From Brooks, R. H. and A. T. Corey (1966), Properties of porous media affecting fluid flow, J. Irrig. Drain. Div., 6, 61

Definition at line 26 of file PorousFlowRelativePermeabilityBC.h.

Constructor & Destructor Documentation

◆ PorousFlowRelativePermeabilityBC()

PorousFlowRelativePermeabilityBC::PorousFlowRelativePermeabilityBC ( const InputParameters & parameters )

Definition at line 26 of file PorousFlowRelativePermeabilityBC.C.

   : PorousFlowRelativePermeabilityBase(parameters),
     _lambda(getParam<Real>("lambda")),
     _is_nonwetting(getParam<bool>("nw_phase"))
 {
 }

Member Function Documentation

◆ computeQpProperties()

void PorousFlowRelativePermeabilityBase::computeQpProperties ( )

overrideprotectedvirtualinherited

Definition at line 59 of file PorousFlowRelativePermeabilityBase.C.

 {
   // Effective saturation
   Real seff = effectiveSaturation(_saturation[_qp][_phase_num]);
   Real relperm, drelperm;
  
   if (seff < 0.0)
   {
     // Relative permeability is 0 for saturation less than residual
     relperm = 0.0;
     drelperm = 0.0;
   }
   else if (seff >= 0.0 && seff <= 1)
   {
     relperm = relativePermeability(seff);
     drelperm = dRelativePermeability(seff);
   }
   else // seff > 1
   {
     // Relative permeability is 1 when fully saturated
     relperm = 1.0;
     drelperm = 0.0;
   }
  
   _relative_permeability[_qp] = relperm * _scaling;
   _drelative_permeability_ds[_qp] = drelperm * _dseff_ds * _scaling;
 }

◆ dRelativePermeability()

Real PorousFlowRelativePermeabilityBC::dRelativePermeability ( Real seff ) const

overrideprotectedvirtual

Derivative of relative permeability with respect to effective saturation.

Parameters

seff	effective saturation

Returns: derivative of relative permeability wrt effective saturation

Implements PorousFlowRelativePermeabilityBase.

Definition at line 44 of file PorousFlowRelativePermeabilityBC.C.

 {
   if (_is_nonwetting)
     return PorousFlowBrooksCorey::dRelativePermeabilityNW(seff, _lambda);
   else
     return PorousFlowBrooksCorey::dRelativePermeabilityW(seff, _lambda);
 }

◆ effectiveSaturation()

Real PorousFlowRelativePermeabilityBase::effectiveSaturation ( Real saturation ) const

protectedvirtualinherited

Effective saturation of fluid phase.

Parameters

saturation true saturation

Returns: effective saturation

Definition at line 88 of file PorousFlowRelativePermeabilityBase.C.

 {
   return (saturation - _s_res) / (1.0 - _sum_s_res);
 }

Referenced by PorousFlowRelativePermeabilityBase::computeQpProperties().

◆ relativePermeability()

Real PorousFlowRelativePermeabilityBC::relativePermeability ( Real seff ) const

overrideprotectedvirtual

Relative permeability equation (must be overriden in derived class)

Parameters

seff	effective saturation

Returns: relative permeability

Implements PorousFlowRelativePermeabilityBase.

Definition at line 35 of file PorousFlowRelativePermeabilityBC.C.

 {
   if (_is_nonwetting)
     return PorousFlowBrooksCorey::relativePermeabilityNW(seff, _lambda);
   else
     return PorousFlowBrooksCorey::relativePermeabilityW(seff, _lambda);
 }