DarcyFlux Class Reference

Kernel = grad(permeability*(grad(pressure) - weight)) This is mass flow according to the Darcy equation. More...

#include <DarcyFlux.h>

Inheritance diagram for DarcyFlux:

Public Member Functions
	DarcyFlux (const InputParameters &parameters)

Protected Member Functions
virtual Real	computeQpResidual ()
virtual Real	computeQpJacobian ()

Protected Attributes
RealVectorValue	_fluid_weight
	fluid weight (gravity*density) as a vector pointing downwards, eg '0 0 -10000' More...
Real	_fluid_viscosity
	fluid dynamic viscosity More...
const MaterialProperty< RealTensorValue > &	_permeability
	Material permeability. More...

Detailed Description

Kernel = grad(permeability*(grad(pressure) - weight)) This is mass flow according to the Darcy equation.

Definition at line 24 of file DarcyFlux.h.

Constructor & Destructor Documentation

DarcyFlux()

DarcyFlux::DarcyFlux

(

const InputParameters &

parameters

)

Definition at line 32 of file DarcyFlux.C.

  : Kernel(parameters),
    _fluid_weight(getParam<RealVectorValue>("fluid_weight")),
    _fluid_viscosity(getParam<Real>("fluid_viscosity")),
    _permeability(getMaterialProperty<RealTensorValue>("permeability"))
{
}

Member Function Documentation

computeQpJacobian()

Real DarcyFlux::computeQpJacobian ( )

protectedvirtual

Definition at line 48 of file DarcyFlux.C.

{
  return _grad_test[_i][_qp] * (_permeability[_qp] * _grad_phi[_j][_qp]) / _fluid_viscosity;
}

computeQpResidual()

Real DarcyFlux::computeQpResidual ( )

protectedvirtual

Definition at line 41 of file DarcyFlux.C.

{
  return _grad_test[_i][_qp] * (_permeability[_qp] * (_grad_u[_qp] - _fluid_weight)) /
         _fluid_viscosity;
}

Member Data Documentation

_fluid_viscosity

Real DarcyFlux::_fluid_viscosity

protected

fluid dynamic viscosity

Definition at line 38 of file DarcyFlux.h.

Referenced by computeQpJacobian(), and computeQpResidual().

_fluid_weight

RealVectorValue DarcyFlux::_fluid_weight

protected

fluid weight (gravity*density) as a vector pointing downwards, eg '0 0 -10000'

Definition at line 35 of file DarcyFlux.h.

Referenced by computeQpResidual().

_permeability

const MaterialProperty<RealTensorValue>& DarcyFlux::_permeability

protected

Material permeability.

Definition at line 41 of file DarcyFlux.h.

Referenced by computeQpJacobian(), and computeQpResidual().

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

• richards/include/kernels/DarcyFlux.h
• richards/src/kernels/DarcyFlux.C