RichardsSeff2waterRSC Class Reference

Rogers-Stallybrass-Clements version of effective saturation of water phase as a function of (Pwater, Pgas), and its derivs wrt to those pressures. More...

#include <RichardsSeff2waterRSC.h>

Inheritance diagram for RichardsSeff2waterRSC:

Public Member Functions
	RichardsSeff2waterRSC (const InputParameters &parameters)
Real	seff (std::vector< const VariableValue * > p, unsigned int qp) const
	water effective saturation More...
void	dseff (std::vector< const VariableValue * > p, unsigned int qp, std::vector< Real > &result) const
	derivative of effective saturation as a function of porepressure More...
void	d2seff (std::vector< const VariableValue * > p, unsigned int qp, std::vector< std::vector< Real >> &result) const
	second derivative of effective saturation as a function of porepressure More...
void	initialize ()
void	execute ()
void	finalize ()

Protected Attributes
Real	_oil_viscosity
	oil viscosity More...
Real	_scale_ratio
	RSC scale ratio. More...
Real	_shift
	RSC shift. More...
Real	_scale
	RSC scale. More...

Detailed Description

Rogers-Stallybrass-Clements version of effective saturation of water phase as a function of (Pwater, Pgas), and its derivs wrt to those pressures.

Note that the water pressure appears first in the tuple (Pwater, Pgas). valid for residual saturations = 0, and viscosityOil = 2*viscosityWater. (the "2" is important here!). C Rogers, MP Stallybrass and DL Clements "On two phase filtration under gravity and with boundary infiltration: application of a Backlund transformation" Nonlinear Analysis Theory Methods and Applications 7 (1983) 785–799.

Definition at line 30 of file RichardsSeff2waterRSC.h.

Constructor & Destructor Documentation

RichardsSeff2waterRSC()

RichardsSeff2waterRSC::RichardsSeff2waterRSC

(

const InputParameters &

parameters

)

Definition at line 42 of file RichardsSeff2waterRSC.C.

  : RichardsSeff(parameters),
    _oil_viscosity(getParam<Real>("oil_viscosity")),
    _scale_ratio(getParam<Real>("scale_ratio")),
    _shift(getParam<Real>("shift")),
    _scale(0.25 * _scale_ratio * _oil_viscosity)
{
}

Member Function Documentation

d2seff()

void RichardsSeff2waterRSC::d2seff ( std::vector< const VariableValue * >  p, unsigned int  qp, std::vector< std::vector< Real >> &  result  ) const

virtual

second derivative of effective saturation as a function of porepressure

Parameters

p	porepressure in the element. Note that (*p[0])[qp] is the porepressure at quadpoint qp
qp	the quad point to evaluate effective saturation at
result	the derivtives will be placed in this array

Implements RichardsSeff.

Definition at line 69 of file RichardsSeff2waterRSC.C.

{
  Real pc = (*p[1])[qp] - (*p[0])[qp];
  result[1][1] = RichardsSeffRSC::d2seff(pc, _shift, _scale);
  result[0][1] = -result[1][1];
  result[1][0] = -result[1][1];
  result[0][0] = result[1][1];
}

dseff()

void RichardsSeff2waterRSC::dseff ( std::vector< const VariableValue * >  p, unsigned int  qp, std::vector< Real > &  result  ) const

virtual

derivative of effective saturation as a function of porepressure

Parameters

p	porepressure in the element. Note that (*p[0])[qp] is the porepressure at quadpoint qp
qp	the quad point to evaluate effective saturation at
result	the derivtives will be placed in this array

Implements RichardsSeff.

Definition at line 59 of file RichardsSeff2waterRSC.C.

{
  Real pc = (*p[1])[qp] - (*p[0])[qp];
  result[1] = RichardsSeffRSC::dseff(pc, _shift, _scale);
  result[0] = -result[1];
}

execute()

void RichardsSeff::execute ( )

inherited

Definition at line 32 of file RichardsSeff.C.

{
}

finalize()

void RichardsSeff::finalize ( )

inherited

Definition at line 37 of file RichardsSeff.C.

{
}

initialize()

void RichardsSeff::initialize ( )

inherited

Definition at line 27 of file RichardsSeff.C.

{
}

seff()

Real RichardsSeff2waterRSC::seff ( std::vector< const VariableValue * >  p, unsigned int  qp  ) const

virtual

water effective saturation

Parameters

p	porepressures. Here (*p[0])[qp] is the water pressure at quadpoint qp, and (*p[1])[qp] is the gas porepressure
qp	the quadpoint to evaluate effective saturation at

Implements RichardsSeff.

Definition at line 52 of file RichardsSeff2waterRSC.C.

{
  Real pc = (*p[1])[qp] - (*p[0])[qp];
  return RichardsSeffRSC::seff(pc, _shift, _scale);
}

Member Data Documentation

_oil_viscosity

Real RichardsSeff2waterRSC::_oil_viscosity

protected

oil viscosity

Definition at line 66 of file RichardsSeff2waterRSC.h.

_scale

Real RichardsSeff2waterRSC::_scale

protected

RSC scale.

Definition at line 75 of file RichardsSeff2waterRSC.h.

Referenced by d2seff(), dseff(), and seff().

_scale_ratio

Real RichardsSeff2waterRSC::_scale_ratio

protected

RSC scale ratio.

Definition at line 69 of file RichardsSeff2waterRSC.h.

_shift

Real RichardsSeff2waterRSC::_shift

protected

RSC shift.

Definition at line 72 of file RichardsSeff2waterRSC.h.

Referenced by d2seff(), dseff(), and seff().

---

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

• richards/include/userobjects/RichardsSeff2waterRSC.h
• richards/src/userobjects/RichardsSeff2waterRSC.C