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 "TimeDerivative.h"
      11             : 
      12             : // MOOSE includes
      13             : #include "Assembly.h"
      14             : #include "MooseVariableFE.h"
      15             : 
      16             : #include "libmesh/quadrature.h"
      17             : 
      18             : registerMooseObject("MooseApp", TimeDerivative);
      19             : 
      20             : InputParameters
      21       59571 : TimeDerivative::validParams()
      22             : {
      23       59571 :   InputParameters params = TimeKernel::validParams();
      24       59571 :   params.addClassDescription("The time derivative operator with the weak form of $(\\psi_i, "
      25             :                              "\\frac{\\partial u_h}{\\partial t})$.");
      26       59571 :   params.addParam<bool>("lumping", false, "True for mass matrix lumping, false otherwise");
      27             : 
      28       59571 :   return params;
      29           0 : }
      30             : 
      31       16029 : TimeDerivative::TimeDerivative(const InputParameters & parameters)
      32       16029 :   : TimeKernel(parameters), _lumping(getParam<bool>("lumping"))
      33             : {
      34       16009 : }
      35             : 
      36             : Real
      37  4537727380 : TimeDerivative::computeQpResidual()
      38             : {
      39  4537727380 :   return _test[_i][_qp] * _u_dot[_qp];
      40             : }
      41             : 
      42             : Real
      43  3737441022 : TimeDerivative::computeQpJacobian()
      44             : {
      45  3737441022 :   return _test[_i][_qp] * _phi[_j][_qp] * _du_dot_du[_qp];
      46             : }
      47             : 
      48             : void
      49    39215803 : TimeDerivative::computeJacobian()
      50             : {
      51    39215803 :   if (_lumping)
      52             :   {
      53       44924 :     prepareMatrixTag(_assembly, _var.number(), _var.number());
      54             : 
      55       44924 :     precalculateJacobian();
      56      148220 :     for (_i = 0; _i < _test.size(); _i++)
      57      363680 :       for (_j = 0; _j < _phi.size(); _j++)
      58      996320 :         for (_qp = 0; _qp < _qrule->n_points(); _qp++)
      59      735936 :           _local_ke(_i, _i) += _JxW[_qp] * _coord[_qp] * computeQpJacobian();
      60             : 
      61       44924 :     accumulateTaggedLocalMatrix();
      62             :   }
      63             :   else
      64    39170879 :     TimeKernel::computeJacobian();
      65    39215803 : }