Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://www.mooseframework.org
       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 "DivDivField.h"
      11             : #include "Assembly.h"
      12             : 
      13             : registerMooseObject("MooseApp", DivDivField);
      14             : 
      15             : InputParameters
      16        3211 : DivDivField::validParams()
      17             : {
      18        3211 :   InputParameters params = VectorKernel::validParams();
      19        6422 :   params.addClassDescription(
      20             :       "The grad-div operator optionally scaled by a constant scalar coefficient."
      21             :       "Weak form: $(\\nabla \\cdot \\vec{\\psi_i}, k \\nabla \\cdot \\vec{u})$.");
      22        9633 :   params.addParam<Real>("coeff", 1.0, "The constant coefficient");
      23        3211 :   return params;
      24           0 : }
      25             : 
      26          78 : DivDivField::DivDivField(const InputParameters & parameters)
      27             :   : VectorKernel(parameters),
      28         156 :     _div_test(_var.divPhi()),
      29          78 :     _div_phi(_assembly.divPhi(_var)),
      30          78 :     _div_u(_is_implicit ? _var.divSln() : _var.divSlnOld()),
      31         234 :     _coeff(getParam<Real>("coeff"))
      32             : {
      33          78 : }
      34             : 
      35             : Real
      36      285696 : DivDivField::computeQpResidual()
      37             : {
      38      285696 :   return _coeff * _div_u[_qp] * _div_test[_i][_qp];
      39             : }
      40             : 
      41             : Real
      42     1198080 : DivDivField::computeQpJacobian()
      43             : {
      44     1198080 :   return _coeff * _div_phi[_j][_qp] * _div_test[_i][_qp];
      45             : }