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 "INSCompressibilityPenalty.h"
      11             : 
      12             : registerMooseObject("NavierStokesApp", INSCompressibilityPenalty);
      13             : 
      14             : InputParameters
      15           0 : INSCompressibilityPenalty::validParams()
      16             : {
      17           0 :   InputParameters params = Kernel::validParams();
      18             : 
      19           0 :   params.addClassDescription("The penalty term may be used when Dirichlet boundary condition is "
      20             :                              "applied to the entire boundary.");
      21           0 :   params.addParam<Real>("penalty", 1e-4, "Penalty value is used to relax the incompressibility");
      22             : 
      23           0 :   return params;
      24           0 : }
      25             : 
      26           0 : INSCompressibilityPenalty::INSCompressibilityPenalty(const InputParameters & parameters)
      27             :   : Kernel(parameters),
      28             :     // penalty value
      29           0 :     _penalty(getParam<Real>("penalty"))
      30             : 
      31             : {
      32           0 : }
      33             : 
      34             : Real
      35           0 : INSCompressibilityPenalty::computeQpResidual()
      36             : {
      37             :   // penalty*p*q
      38           0 :   return _penalty * _u[_qp] * _test[_i][_qp];
      39             : }
      40             : 
      41             : Real
      42           0 : INSCompressibilityPenalty::computeQpOffDiagJacobian(unsigned /* jvar */)
      43             : {
      44             :   // does not couple any variables
      45           0 :   return 0;
      46             : }
      47             : 
      48             : Real
      49           0 : INSCompressibilityPenalty::computeQpJacobian()
      50             : {
      51             :   // Derivative wrt to p
      52           0 :   return _penalty * _phi[_j][_qp] * _test[_i][_qp];
      53             : }