CHSplitConcentration Class Reference

Solves Cahn-Hilliard equation using chemical potential as non-linear variable. More...

#include <CHSplitConcentration.h>

Inheritance diagram for CHSplitConcentration:

Public Member Functions
	CHSplitConcentration (const InputParameters &parameters)

Protected Member Functions
virtual Real	computeQpResidual ()
virtual Real	computeQpJacobian ()
virtual Real	computeQpOffDiagJacobian (unsigned int)

Protected Attributes
MaterialPropertyName	_mobility_name
	Mobility property name. More...
const MaterialProperty< RealTensorValue > &	_mobility
const MaterialProperty< RealTensorValue > &	_dmobility_dc
const unsigned int	_mu_var
	Chemical potential variable. More...
const VariableGradient &	_grad_mu

Detailed Description

Solves Cahn-Hilliard equation using chemical potential as non-linear variable.

Definition at line 25 of file CHSplitConcentration.h.

Constructor & Destructor Documentation

CHSplitConcentration()

CHSplitConcentration::CHSplitConcentration

(

const InputParameters &

parameters

)

Definition at line 26 of file CHSplitConcentration.C.

  : DerivativeMaterialInterface<Kernel>(parameters),
    _mobility_name(getParam<MaterialPropertyName>("mobility")),
    _mobility(getMaterialProperty<RealTensorValue>(_mobility_name)),
    _dmobility_dc(getMaterialPropertyDerivative<RealTensorValue>(_mobility_name, name())),
    _mu_var(coupled("chemical_potential_var")),
    _grad_mu(coupledGradient("chemical_potential_var"))
{
}

Member Function Documentation

computeQpJacobian()

Real CHSplitConcentration::computeQpJacobian ( )

protectedvirtual

Definition at line 44 of file CHSplitConcentration.C.

{
  const RealVectorValue a = _dmobility_dc[_qp] * _grad_mu[_qp];
  return _grad_test[_i][_qp] * a * _phi[_j][_qp];
}

computeQpOffDiagJacobian()

Real CHSplitConcentration::computeQpOffDiagJacobian ( unsigned int  jvar )

protectedvirtual

Definition at line 51 of file CHSplitConcentration.C.

{
  if (jvar == _mu_var)
  {
    const RealVectorValue a = _mobility[_qp] * _grad_phi[_j][_qp];
    return _grad_test[_i][_qp] * a;
  }
  else
    return 0.0;
}

computeQpResidual()

Real CHSplitConcentration::computeQpResidual ( )

protectedvirtual

Definition at line 37 of file CHSplitConcentration.C.

{
  const RealVectorValue a = _mobility[_qp] * _grad_mu[_qp];
  return _grad_test[_i][_qp] * a;
}

Member Data Documentation

_dmobility_dc

const MaterialProperty<RealTensorValue>& CHSplitConcentration::_dmobility_dc

protected

Definition at line 39 of file CHSplitConcentration.h.

Referenced by computeQpJacobian().

_grad_mu

const VariableGradient& CHSplitConcentration::_grad_mu

protected

Definition at line 43 of file CHSplitConcentration.h.

Referenced by computeQpJacobian(), and computeQpResidual().

_mobility

const MaterialProperty<RealTensorValue>& CHSplitConcentration::_mobility

protected

Definition at line 38 of file CHSplitConcentration.h.

Referenced by computeQpOffDiagJacobian(), and computeQpResidual().

_mobility_name

MaterialPropertyName CHSplitConcentration::_mobility_name

protected

Mobility property name.

Definition at line 36 of file CHSplitConcentration.h.

_mu_var

const unsigned int CHSplitConcentration::_mu_var

protected

Chemical potential variable.

Definition at line 42 of file CHSplitConcentration.h.

Referenced by computeQpOffDiagJacobian().

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

• phase_field/include/kernels/CHSplitConcentration.h
• phase_field/src/kernels/CHSplitConcentration.C