CHSplitFlux Class Reference

CHSplitFlux computes flux as non-linear variable via residual = flux + mobility * gradient(chemical potential) Kernel is associated with a component (direction) that needs to be specified in the input file. More...

#include <CHSplitFlux.h>

Inheritance diagram for CHSplitFlux:

Public Member Functions
	CHSplitFlux (const InputParameters &parameters)

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

Protected Attributes
const unsigned int	_component
const unsigned int	_mu_var
const VariableGradient &	_grad_mu
const MaterialProperty< RealTensorValue > &	_mobility
const bool	_has_coupled_c
const unsigned int	_c_var
const MaterialProperty< RealTensorValue > *	_dmobility_dc

Detailed Description

CHSplitFlux computes flux as non-linear variable via residual = flux + mobility * gradient(chemical potential) Kernel is associated with a component (direction) that needs to be specified in the input file.

Definition at line 26 of file CHSplitFlux.h.

Constructor & Destructor Documentation

CHSplitFlux()

CHSplitFlux::CHSplitFlux

(

const InputParameters &

parameters

)

Definition at line 27 of file CHSplitFlux.C.

  : DerivativeMaterialInterface<Kernel>(parameters),
    _component(getParam<unsigned int>("component")),
    _mu_var(coupled("mu")),
    _grad_mu(coupledGradient("mu")),
    _mobility(getMaterialProperty<RealTensorValue>("mobility_name")),
    _has_coupled_c(isCoupled("c")),
    _c_var(_has_coupled_c ? coupled("c") : 0),
    _dmobility_dc(_has_coupled_c
                      ? &getMaterialPropertyDerivative<RealTensorValue>("mobility_name",
                                                                        getVar("c", 0)->name())
                      : NULL)
{
}

Member Function Documentation

computeQpJacobian()

Real CHSplitFlux::computeQpJacobian ( )

protectedvirtual

Definition at line 49 of file CHSplitFlux.C.

{
  return _test[_i][_qp] * _phi[_j][_qp];
}

computeQpOffDiagJacobian()

Real CHSplitFlux::computeQpOffDiagJacobian ( unsigned int  jvar )

protectedvirtual

Definition at line 55 of file CHSplitFlux.C.

{
  if (jvar == _mu_var)
    return _test[_i][_qp] * _mobility[_qp].row(_component) * _grad_phi[_j][_qp];
  else if (_has_coupled_c && jvar == _c_var)
    return _test[_i][_qp] * (*_dmobility_dc)[_qp].row(_component) * _grad_mu[_qp] * _phi[_j][_qp];
  else
    return 0.0;
}

computeQpResidual()

Real CHSplitFlux::computeQpResidual ( )

protectedvirtual

Definition at line 43 of file CHSplitFlux.C.

{
  return _test[_i][_qp] * (_u[_qp] + _mobility[_qp].row(_component) * _grad_mu[_qp]);
}

Member Data Documentation

_c_var

const unsigned int CHSplitFlux::_c_var

protected

Definition at line 42 of file CHSplitFlux.h.

Referenced by computeQpOffDiagJacobian().

_component

const unsigned int CHSplitFlux::_component

protected

Definition at line 36 of file CHSplitFlux.h.

Referenced by computeQpOffDiagJacobian(), and computeQpResidual().

_dmobility_dc

const MaterialProperty<RealTensorValue>* CHSplitFlux::_dmobility_dc

protected

Definition at line 44 of file CHSplitFlux.h.

_grad_mu

const VariableGradient& CHSplitFlux::_grad_mu

protected

Definition at line 38 of file CHSplitFlux.h.

Referenced by computeQpOffDiagJacobian(), and computeQpResidual().

_has_coupled_c

const bool CHSplitFlux::_has_coupled_c

protected

Definition at line 41 of file CHSplitFlux.h.

Referenced by computeQpOffDiagJacobian().

_mobility

const MaterialProperty<RealTensorValue>& CHSplitFlux::_mobility

protected

Definition at line 39 of file CHSplitFlux.h.

Referenced by computeQpOffDiagJacobian(), and computeQpResidual().

_mu_var

const unsigned int CHSplitFlux::_mu_var

protected

Definition at line 37 of file CHSplitFlux.h.

Referenced by computeQpOffDiagJacobian().

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

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