Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://mooseframework.inl.gov
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #include "AntitrappingCurrent.h"
      11             : 
      12             : registerMooseObject("PhaseFieldApp", AntitrappingCurrent);
      13             : 
      14             : InputParameters
      15          63 : AntitrappingCurrent::validParams()
      16             : {
      17          63 :   InputParameters params = CoupledSusceptibilityTimeDerivative::validParams();
      18          63 :   params.addClassDescription(
      19             :       "Kernel that provides antitrapping current at the interface for alloy solidification");
      20          63 :   return params;
      21           0 : }
      22             : 
      23          33 : AntitrappingCurrent::AntitrappingCurrent(const InputParameters & parameters)
      24          33 :   : CoupledSusceptibilityTimeDerivative(parameters), _grad_v(coupledGradient("v"))
      25             : {
      26          33 : }
      27             : 
      28             : Real
      29     1533600 : AntitrappingCurrent::computeQpResidual()
      30             : {
      31     1533600 :   const Real norm_sq = _grad_v[_qp].norm_sq();
      32     1533600 :   if (norm_sq < libMesh::TOLERANCE)
      33             :     return 0.0;
      34             : 
      35      883104 :   return _F[_qp] * _v_dot[_qp] * _grad_v[_qp] * _grad_test[_i][_qp] / std::sqrt(norm_sq);
      36             : }
      37             : 
      38             : Real
      39     1641600 : AntitrappingCurrent::computeQpJacobian()
      40             : {
      41     1641600 :   const Real norm_sq = _grad_v[_qp].norm_sq();
      42     1641600 :   if (norm_sq < libMesh::TOLERANCE)
      43             :     return 0.0;
      44             : 
      45      939904 :   return _dFdu[_qp] * _v_dot[_qp] * _grad_v[_qp] * _grad_test[_i][_qp] * _phi[_j][_qp] /
      46      939904 :          std::sqrt(norm_sq);
      47             : }
      48             : 
      49             : Real
      50     1641600 : AntitrappingCurrent::computeQpOffDiagJacobian(unsigned int jvar)
      51             : {
      52     1641600 :   const Real norm_sq = _grad_v[_qp].norm_sq();
      53     1641600 :   if (norm_sq < libMesh::TOLERANCE)
      54             :     return 0.0;
      55             : 
      56             :   // get the coupled variable jvar is referring to
      57             :   const unsigned int cvar = mapJvarToCvar(jvar);
      58             : 
      59      939904 :   if (jvar == _v_var)
      60      939904 :     return (_F[_qp] * _dv_dot[_qp] * _grad_v[_qp] * _grad_test[_i][_qp] * _phi[_j][_qp] +
      61      939904 :             _F[_qp] * _v_dot[_qp] * _grad_test[_i][_qp] * _grad_phi[_j][_qp] -
      62             :             _F[_qp] * _v_dot[_qp] * _grad_v[_qp] * _grad_test[_i][_qp] * _grad_v[_qp] *
      63      939904 :                 _grad_phi[_j][_qp] / norm_sq +
      64      939904 :             _v_dot[_qp] * _grad_v[_qp] * _grad_test[_i][_qp] * _phi[_j][_qp] *
      65      939904 :                 (*_dFdarg[cvar])[_qp]) /
      66      939904 :            std::sqrt(norm_sq);
      67             : 
      68           0 :   return _v_dot[_qp] * _grad_v[_qp] * _grad_test[_i][_qp] * _phi[_j][_qp] * (*_dFdarg[cvar])[_qp] /
      69           0 :          std::sqrt(norm_sq);
      70             : }