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 "MassFreeBC.h"
      11             : #include "MooseMesh.h"
      12             : 
      13             : registerMooseObject("NavierStokesApp", MassFreeBC);
      14             : 
      15             : InputParameters
      16           0 : MassFreeBC::validParams()
      17             : {
      18           0 :   InputParameters params = IntegratedBC::validParams();
      19           0 :   params.addRequiredCoupledVar("vel_x", "x-component of velocity");
      20           0 :   params.addCoupledVar("vel_y", "y-component of velocity");
      21           0 :   params.addCoupledVar("vel_z", "z-component of velocity");
      22           0 :   params.addClassDescription(
      23             :       "Implements free advective flow boundary conditions for the mass equation.");
      24           0 :   return params;
      25           0 : }
      26             : 
      27           0 : MassFreeBC::MassFreeBC(const InputParameters & parameters)
      28             :   : IntegratedBC(parameters),
      29           0 :     _vel_x(coupledValue("vel_x")),
      30           0 :     _vel_y(_mesh.dimension() >= 2 ? coupledValue("vel_y") : _zero),
      31           0 :     _vel_z(_mesh.dimension() >= 3 ? coupledValue("vel_z") : _zero)
      32             : {
      33           0 : }
      34             : 
      35             : Real
      36           0 : MassFreeBC::computeQpResidual()
      37             : {
      38           0 :   RealVectorValue vel_vec(_vel_x[_qp], _vel_y[_qp], _vel_z[_qp]);
      39           0 :   return _u[_qp] * vel_vec * _normals[_qp] * _test[_i][_qp];
      40             : }