FVInfiniteCylinderRadiativeBC.C

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#include "FVInfiniteCylinderRadiativeBC.h"
#include "MathUtils.h"

registerMooseObject("HeatTransferApp", FVInfiniteCylinderRadiativeBC);

InputParameters
FVInfiniteCylinderRadiativeBC::validParams()
{
  InputParameters params = FVRadiativeHeatFluxBCBase::validParams();
  params.addRequiredParam<Real>("boundary_emissivity", "Emissivity of the boundary.");
  params.addParam<Real>("cylinder_emissivity",
                        1,
                        "Emissivity of the cylinder in radiative heat transfer with the boundary.");
  params.addRequiredParam<Real>("boundary_radius",
                                "Radius of the boundary approximated as cylinder.");
  params.addRequiredParam<Real>("cylinder_radius",
                                "Radius of the cylinder on the outside of the boundary.");
  params.addClassDescription("Boundary condition for radiative heat exchange with a cylinder "
                             "where the boundary is approximated as a cylinder as well.");
  return params;
}

FVInfiniteCylinderRadiativeBC::FVInfiniteCylinderRadiativeBC(const InputParameters & parameters)
  : FVRadiativeHeatFluxBCBase(parameters),
    _eps_boundary(getParam<Real>("boundary_emissivity")),
    _eps_cylinder(getParam<Real>("cylinder_emissivity")),
    _boundary_radius(getParam<Real>("boundary_radius")),
    _cylinder_radius(getParam<Real>("cylinder_radius"))
{
  _coefficient =
      _eps_boundary * _eps_cylinder * _cylinder_radius /
      (_eps_cylinder * _cylinder_radius + _eps_boundary * _boundary_radius * (1 - _eps_cylinder));
}

Real
FVInfiniteCylinderRadiativeBC::coefficient() const
{
  return _coefficient;
}