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 "INSQCriterionAux.h"
      11             : 
      12             : registerMooseObject("NavierStokesApp", INSQCriterionAux);
      13             : 
      14             : InputParameters
      15           0 : INSQCriterionAux::validParams()
      16             : {
      17           0 :   InputParameters params = AuxKernel::validParams();
      18             : 
      19           0 :   params.addClassDescription("This class computes the Q criterion, a scalar which"
      20             :                              "aids in vortex identification in turbulent flows");
      21           0 :   params.addCoupledVar("velocity", "The velocity component");
      22           0 :   return params;
      23           0 : }
      24             : 
      25           0 : INSQCriterionAux::INSQCriterionAux(const InputParameters & parameters)
      26           0 :   : AuxKernel(parameters), _grad_velocity(coupledVectorGradient("velocity"))
      27             : {
      28           0 : }
      29             : 
      30             : Real
      31           0 : INSQCriterionAux::computeValue()
      32             : {
      33           0 :   const Real symm_part = 2.0 * Utility::pow<2>(_grad_velocity[_qp](0, 0)) +
      34           0 :                          2.0 * Utility::pow<2>(_grad_velocity[_qp](1, 1)) +
      35           0 :                          2.0 * Utility::pow<2>(_grad_velocity[_qp](2, 2)) +
      36           0 :                          Utility::pow<2>(_grad_velocity[_qp](0, 2) + _grad_velocity[_qp](2, 0)) +
      37           0 :                          Utility::pow<2>(_grad_velocity[_qp](0, 1) + _grad_velocity[_qp](1, 0)) +
      38           0 :                          Utility::pow<2>(_grad_velocity[_qp](1, 2) + _grad_velocity[_qp](2, 1));
      39             :   const Real antisymm_part =
      40           0 :       Utility::pow<2>(_grad_velocity[_qp](0, 2) - _grad_velocity[_qp](2, 0)) +
      41           0 :       Utility::pow<2>(_grad_velocity[_qp](0, 1) - _grad_velocity[_qp](1, 0)) +
      42           0 :       Utility::pow<2>(_grad_velocity[_qp](1, 2) - _grad_velocity[_qp](2, 1));
      43           0 :   return 0.5 * (antisymm_part - symm_part);
      44             : }