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 "GBEvolutionBase.h"
      11             : 
      12             : template <bool is_ad>
      13             : InputParameters
      14        2515 : GBEvolutionBaseTempl<is_ad>::validParams()
      15             : {
      16        2515 :   InputParameters params = Material::validParams();
      17        2515 :   params.addClassDescription(
      18             :       "Computes necessary material properties for the isotropic grain growth model");
      19        5030 :   params.addRequiredCoupledVar("T", "Temperature in Kelvin");
      20        5030 :   params.addParam<Real>("f0s", 0.125, "The GB energy constant ");
      21        5030 :   params.addRequiredParam<Real>("wGB", "Diffuse GB width in the length scale of the model");
      22        5030 :   params.addParam<Real>("length_scale", 1.0e-9, "Length scale in m, where default is nm");
      23        5030 :   params.addParam<Real>("time_scale", 1.0e-9, "Time scale in s, where default is ns");
      24        5030 :   params.addParam<Real>(
      25             :       "GBMobility",
      26        5030 :       -1,
      27             :       "GB mobility input in m^4/(J*s), that overrides the temperature dependent calculation");
      28        5030 :   params.addParam<Real>("GBmob0", 0, "Grain boundary mobility prefactor in m^4/(J*s)");
      29        5030 :   params.addParam<Real>("Q", 0, "Grain boundary migration activation energy in eV");
      30        5030 :   params.addParam<Real>("molar_volume",
      31        5030 :                         24.62e-6,
      32             :                         "Molar volume in m^3/mol, needed for temperature gradient driving force");
      33        2515 :   return params;
      34           0 : }
      35             : 
      36             : template <bool is_ad>
      37        1956 : GBEvolutionBaseTempl<is_ad>::GBEvolutionBaseTempl(const InputParameters & parameters)
      38             :   : DerivativeMaterialInterface<Material>(parameters),
      39        1956 :     _f0s(getParam<Real>("f0s")),
      40        3912 :     _wGB(getParam<Real>("wGB")),
      41        3912 :     _length_scale(getParam<Real>("length_scale")),
      42        3912 :     _time_scale(getParam<Real>("time_scale")),
      43        3912 :     _GBmob0(getParam<Real>("GBmob0")),
      44        3912 :     _Q(getParam<Real>("Q")),
      45        3912 :     _GBMobility(getParam<Real>("GBMobility")),
      46        3912 :     _molar_vol(getParam<Real>("molar_volume")),
      47        1956 :     _T(coupledValue("T")),
      48        3912 :     _sigma(declareGenericProperty<Real, is_ad>("sigma")),
      49        3912 :     _M_GB(declareGenericProperty<Real, is_ad>("M_GB")),
      50        3912 :     _kappa(declareGenericProperty<Real, is_ad>("kappa_op")),
      51        3912 :     _gamma(declareGenericProperty<Real, is_ad>("gamma_asymm")),
      52        3912 :     _L(declareGenericProperty<Real, is_ad>("L")),
      53        1956 :     _dLdT(parameters.hasDefaultCoupledValue("T")
      54        1956 :               ? nullptr
      55        2196 :               : &declarePropertyDerivative<Real>("L", coupledName("T", 0))),
      56        3912 :     _l_GB(declareGenericProperty<Real, is_ad>("l_GB")),
      57        3912 :     _mu(declareGenericProperty<Real, is_ad>("mu")),
      58        3912 :     _entropy_diff(declareGenericProperty<Real, is_ad>("entropy_diff")),
      59        3912 :     _molar_volume(declareGenericProperty<Real, is_ad>("molar_volume")),
      60        3912 :     _act_wGB(declareGenericProperty<Real, is_ad>("act_wGB")),
      61        1956 :     _kb(8.617343e-5),     // Boltzmann constant in eV/K
      62        1956 :     _JtoeV(6.24150974e18) // Joule to eV conversion
      63             : {
      64        1956 :   if (_GBMobility == -1 && _GBmob0 == 0)
      65           0 :     mooseError("Either a value for GBMobility or for GBmob0 and Q must be provided");
      66        1956 : }
      67             : 
      68             : template <bool is_ad>
      69             : void
      70   100691648 : GBEvolutionBaseTempl<is_ad>::computeQpProperties()
      71             : {
      72   100691648 :   const Real length_scale4 = _length_scale * _length_scale * _length_scale * _length_scale;
      73             : 
      74             :   // GB mobility Derivative
      75             :   Real dM_GBdT;
      76             : 
      77   100691648 :   if (_GBMobility < 0)
      78             :   {
      79             :     // Convert to lengthscale^4/(eV*timescale);
      80    99524448 :     const Real M0 = _GBmob0 * _time_scale / (_JtoeV * length_scale4);
      81             : 
      82    99524448 :     _M_GB[_qp] = M0 * std::exp(-_Q / (_kb * _T[_qp]));
      83   101433648 :     dM_GBdT = MetaPhysicL::raw_value(_M_GB[_qp] * _Q / (_kb * _T[_qp] * _T[_qp]));
      84             :   }
      85             :   else
      86             :   {
      87             :     // Convert to lengthscale^4/(eV*timescale)
      88     1167200 :     _M_GB[_qp] = _GBMobility * _time_scale / (_JtoeV * length_scale4);
      89             :     dM_GBdT = 0.0;
      90             :   }
      91             : 
      92             :   // in the length scale of the system
      93   100691648 :   _l_GB[_qp] = _wGB;
      94             : 
      95   102600848 :   _L[_qp] = 4.0 / 3.0 * _M_GB[_qp] / _l_GB[_qp];
      96   100691648 :   if (_dLdT)
      97     2540800 :     (*_dLdT)[_qp] = MetaPhysicL::raw_value(4.0 / 3.0 * dM_GBdT / _l_GB[_qp]);
      98   102600848 :   _kappa[_qp] = 3.0 / 4.0 * _sigma[_qp] * _l_GB[_qp];
      99   100691648 :   _gamma[_qp] = 1.5;
     100   102600848 :   _mu[_qp] = 3.0 / 4.0 * 1.0 / _f0s * _sigma[_qp] / _l_GB[_qp];
     101             : 
     102             :   // J/(K mol) converted to eV(K mol)
     103   100691648 :   _entropy_diff[_qp] = 8.0e3 * _JtoeV;
     104             : 
     105             :   // m^3/mol converted to ls^3/mol
     106   100691648 :   _molar_volume[_qp] = _molar_vol / (_length_scale * _length_scale * _length_scale);
     107   100691648 :   _act_wGB[_qp] = 0.5e-9 / _length_scale;
     108   100691648 : }
     109             : 
     110             : template class GBEvolutionBaseTempl<false>;
     111             : template class GBEvolutionBaseTempl<true>;