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 "INSCourant.h"
      11             : #include "MooseMesh.h"
      12             : 
      13             : registerMooseObject("NavierStokesApp", INSCourant);
      14             : 
      15             : InputParameters
      16           0 : INSCourant::validParams()
      17             : {
      18           0 :   InputParameters params = AuxKernel::validParams();
      19             : 
      20           0 :   params.addClassDescription("Computes h_min / |u|.");
      21             :   // Coupled variables
      22           0 :   params.addRequiredCoupledVar("u", "x-velocity");
      23           0 :   params.addCoupledVar("v", "y-velocity"); // only required in 2D and 3D
      24           0 :   params.addCoupledVar("w", "z-velocity"); // only required in 3D
      25             : 
      26           0 :   return params;
      27           0 : }
      28             : 
      29           0 : INSCourant::INSCourant(const InputParameters & parameters)
      30             :   : AuxKernel(parameters),
      31           0 :     _u_vel(coupledValue("u")),
      32           0 :     _v_vel(_mesh.dimension() >= 2 ? coupledValue("v") : _zero),
      33           0 :     _w_vel(_mesh.dimension() == 3 ? coupledValue("w") : _zero)
      34             : {
      35           0 :   if (isNodal())
      36           0 :     mooseError("This AuxKernel only supports Elemental fields");
      37           0 : }
      38             : 
      39             : Real
      40           0 : INSCourant::computeValue()
      41             : {
      42           0 :   const RealVectorValue U(_u_vel[_qp], _v_vel[_qp], _w_vel[_qp]);
      43           0 :   Real vel_mag = U.norm();
      44             : 
      45             :   // Don't divide by zero...
      46           0 :   vel_mag = std::max(vel_mag, std::numeric_limits<Real>::epsilon());
      47             : 
      48           0 :   return _current_elem->hmin() / vel_mag;
      49             : }