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 "ThermalConductivity.h"
      11             : 
      12             : registerMooseObject("HeatTransferApp", ThermalConductivity);
      13             : 
      14             : InputParameters
      15           0 : ThermalConductivity::validParams()
      16             : {
      17           0 :   InputParameters params = SideAverageValue::validParams();
      18           0 :   params.addRequiredParam<Real>("dx", "Length between sides of sample in length_scale");
      19           0 :   params.addRequiredParam<PostprocessorName>(
      20             :       "flux", "Heat flux out of 'cold' boundary in solution units, should always be positive");
      21           0 :   params.addRequiredParam<PostprocessorName>("T_hot", "Temperature on 'hot' boundary in K");
      22           0 :   params.addParam<Real>("length_scale", 1e-8, "Length scale of the solution, default is 1e-8");
      23           0 :   params.addParam<Real>("k0", 0.0, "Initial value of the thermal conductivity");
      24           0 :   params.addClassDescription("Computes the effective thermal conductivity averaged on a boundary.");
      25           0 :   return params;
      26           0 : }
      27             : 
      28           0 : ThermalConductivity::ThermalConductivity(const InputParameters & parameters)
      29             :   : SideAverageValue(parameters),
      30           0 :     _dx(getParam<Real>("dx")),
      31           0 :     _flux(getPostprocessorValue("flux")),
      32           0 :     _T_hot(getPostprocessorValue("T_hot")),
      33           0 :     _length_scale(getParam<Real>("length_scale")),
      34           0 :     _k0(getParam<Real>("k0")),
      35           0 :     _step_zero(declareRestartableData<bool>("step_zero", true)),
      36           0 :     _value(0.0)
      37             : {
      38           0 : }
      39             : 
      40             : void
      41           0 : ThermalConductivity::finalize()
      42             : {
      43           0 :   SideAverageValue::finalize();
      44             : 
      45           0 :   const Real T_cold = _integral_value / _volume;
      46             :   Real Th_cond = 0.0;
      47           0 :   if (_t_step >= 1)
      48           0 :     _step_zero = false;
      49             : 
      50             :   // Calculate effective thermal conductivity in W/(length_scale-K)
      51           0 :   if (std::abs(_T_hot - T_cold) > 1.0e-20)
      52           0 :     Th_cond = std::abs(_flux) * _dx / std::abs(_T_hot - T_cold);
      53             : 
      54           0 :   if (_step_zero)
      55           0 :     _value = _k0;
      56             :   else
      57           0 :     _value = Th_cond / _length_scale; // In W/(m-K)
      58           0 : }
      59             : 
      60             : Real
      61           0 : ThermalConductivity::getValue() const
      62             : {
      63           0 :   return _value;
      64             : }