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 "SCMTriPowerIC.h"
      11             : #include "Function.h"
      12             : #include "TriSubChannelMesh.h"
      13             : 
      14             : registerMooseObject("SubChannelApp", SCMTriPowerIC);
      15             : 
      16             : InputParameters
      17         310 : SCMTriPowerIC::validParams()
      18             : {
      19         310 :   InputParameters params = TriSubChannelBaseIC::validParams();
      20         310 :   params.addClassDescription(
      21             :       "Computes axial power rate (W/m) that goes into the subchannel cells "
      22             :       "or is assigned to the fuel pins, in a triangular lattice arrangement");
      23         620 :   params.addRequiredParam<PostprocessorName>(
      24             :       "power", "The postprocessor or Real to use for the total power of the subassembly [W]");
      25         620 :   params.addRequiredParam<std::string>(
      26             :       "filename", "name of radial power profile .txt file (should be a single column) [UnitLess].");
      27         620 :   params.addParam<FunctionName>("axial_heat_rate",
      28             :                                 "1.0",
      29             :                                 "user provided normalized function of axial heat rate [Unitless]. "
      30             :                                 "The integral over pin length should equal the heated length");
      31         310 :   return params;
      32           0 : }
      33             : 
      34         166 : SCMTriPowerIC::SCMTriPowerIC(const InputParameters & params)
      35             :   : TriSubChannelBaseIC(params),
      36         166 :     _power(getPostprocessorValue("power")),
      37         166 :     _numberoflines(0),
      38         498 :     _filename(getParam<std::string>("filename")),
      39         332 :     _axial_heat_rate(getFunction("axial_heat_rate"))
      40             : {
      41         166 :   if (processor_id() > 0)
      42          32 :     return;
      43             : 
      44         134 :   auto n_pins = _mesh.getNumOfPins();
      45         134 :   auto heated_length = _mesh.getHeatedLength();
      46             : 
      47         134 :   _power_dis.resize(n_pins, 1);
      48         134 :   _power_dis.setZero();
      49         134 :   _pin_power_correction.resize(n_pins, 1);
      50         134 :   _pin_power_correction.setOnes();
      51             : 
      52             :   Real vin;
      53         134 :   std::ifstream inFile;
      54             : 
      55         134 :   inFile.open(_filename);
      56         134 :   if (!inFile)
      57           0 :     mooseError(name(), ": Unable to open file: ", _filename);
      58             : 
      59        5920 :   while (inFile >> vin)
      60        5786 :     _numberoflines += 1;
      61             : 
      62         134 :   if (inFile.fail() && !inFile.eof())
      63           0 :     mooseError(name(), ": Non numerical input at line: ", _numberoflines);
      64             : 
      65         134 :   if (_numberoflines != n_pins)
      66           0 :     mooseError(name(), ": Radial profile file doesn't have correct size: ", n_pins);
      67         134 :   inFile.close();
      68             : 
      69         134 :   inFile.open(_filename);
      70             :   int i = 0;
      71        5920 :   while (inFile >> vin)
      72             :   {
      73        5786 :     _power_dis(i, 0) = vin;
      74        5786 :     i++;
      75             :   }
      76         134 :   inFile.close();
      77             : 
      78         134 :   auto sum = _power_dis.sum();
      79             :   // full (100%) power of one pin [W]
      80         134 :   auto fpin_power = _power / sum;
      81             :   // actual pin power [W]
      82         134 :   _ref_power = _power_dis * fpin_power;
      83             :   // Convert the actual pin power to a linear heat rate [W/m]
      84         134 :   _ref_qprime = _ref_power / heated_length;
      85         134 : }
      86             : 
      87             : void
      88         166 : SCMTriPowerIC::initialSetup()
      89             : {
      90         166 :   if (processor_id() > 0)
      91          32 :     return;
      92         134 :   auto n_pins = _mesh.getNumOfPins();
      93         134 :   auto nz = _mesh.getNumOfAxialCells();
      94         134 :   auto z_grid = _mesh.getZGrid();
      95         134 :   auto heated_length = _mesh.getHeatedLength();
      96         134 :   auto unheated_length_entry = _mesh.getHeatedLengthEntry();
      97             : 
      98         134 :   _estimate_power.resize(n_pins, 1);
      99         134 :   _estimate_power.setZero();
     100        3632 :   for (unsigned int iz = 1; iz < nz + 1; iz++)
     101             :   {
     102             :     // Compute axial location of nodes.
     103        3498 :     auto z2 = z_grid[iz];
     104        3498 :     auto z1 = z_grid[iz - 1];
     105        3498 :     Point p1(0, 0, z1 - unheated_length_entry);
     106        3498 :     Point p2(0, 0, z2 - unheated_length_entry);
     107        3498 :     auto heat1 = _axial_heat_rate.value(_t, p1);
     108        3498 :     auto heat2 = _axial_heat_rate.value(_t, p2);
     109        3498 :     if (MooseUtils::absoluteFuzzyGreaterThan(z2, unheated_length_entry) &&
     110        2888 :         MooseUtils::absoluteFuzzyLessThan(z1, unheated_length_entry + heated_length))
     111             :     {
     112             :       // cycle through pins
     113       80828 :       for (unsigned int i_pin = 0; i_pin < n_pins; i_pin++)
     114             :       {
     115             :         // Compute the height of this element.
     116       78724 :         auto dz = z2 - z1;
     117             : 
     118             :         // calculation of power for the first heated segment if nodes don't align
     119       78724 :         if (MooseUtils::absoluteFuzzyGreaterThan(z2, unheated_length_entry) &&
     120             :             MooseUtils::absoluteFuzzyLessThan(z1, unheated_length_entry))
     121             :         {
     122             :           heat1 = 0.0;
     123             :         }
     124             : 
     125             :         // calculation of power for the last heated segment if nodes don't align
     126       78724 :         if (MooseUtils::absoluteFuzzyGreaterThan(z2, unheated_length_entry + heated_length) &&
     127             :             MooseUtils::absoluteFuzzyLessThan(z1, unheated_length_entry + heated_length))
     128             :         {
     129             :           heat2 = 0.0;
     130             :         }
     131       78724 :         _estimate_power(i_pin) += _ref_qprime(i_pin) * (heat1 + heat2) * dz / 2.0;
     132             :       }
     133             :     }
     134             :   }
     135             : 
     136             :   // if a Pin has zero power (_ref_qprime(i_pin) = 0) then I need to avoid dividing by zero. I
     137             :   // divide by a wrong non-zero number which is not correct but this error doesn't mess things cause
     138             :   // _ref_qprime(i_pin) = 0.0
     139         134 :   auto total_power = 0.0;
     140        5920 :   for (unsigned int i_pin = 0; i_pin < n_pins; i_pin++)
     141             :   {
     142        5786 :     total_power += _estimate_power(i_pin);
     143        5786 :     if (_estimate_power(i_pin) == 0.0)
     144         258 :       _estimate_power(i_pin) = 1.0;
     145             :   }
     146             :   // We need to correct the linear power assigned to the nodes of each pin
     147             :   // so that the total power calculated  by the trapezoidal rule agrees with the power assigned by
     148             :   // the user.
     149         134 :   _pin_power_correction = _ref_power.cwiseQuotient(_estimate_power);
     150         134 :   _console << "###########################################" << std::endl;
     151         134 :   _console << "Total power estimation by IC kernel before correction: " << total_power << " [W] "
     152         134 :            << std::endl;
     153         134 :   _console << "IC Power correction vector :\n" << _pin_power_correction << " \n";
     154         134 : }
     155             : 
     156             : Real
     157      286450 : SCMTriPowerIC::value(const Point & p)
     158             : {
     159             :   auto heat_rate = 0.0;
     160      286450 :   auto heated_length = _mesh.getHeatedLength();
     161      286450 :   auto unheated_length_entry = _mesh.getHeatedLengthEntry();
     162             :   Point p1(0, 0, unheated_length_entry);
     163             :   Point P = p - p1;
     164      286450 :   auto pin_mesh_exist = _mesh.pinMeshExist();
     165             : 
     166             :   /// assign power to the nodes located inside the heated section
     167      286450 :   if (MooseUtils::absoluteFuzzyGreaterEqual(p(2), unheated_length_entry) &&
     168      249007 :       MooseUtils::absoluteFuzzyLessEqual(p(2), unheated_length_entry + heated_length))
     169             :   {
     170      178365 :     if (pin_mesh_exist)
     171             :     {
     172             :       // project axial heat rate on pins
     173       89193 :       auto i_pin = _mesh.getPinIndexFromPoint(p);
     174       89193 :       return _ref_qprime(i_pin) * _pin_power_correction(i_pin) * _axial_heat_rate.value(_t, P);
     175             :     }
     176             :     else
     177             :     {
     178             :       // Determine which subchannel this point is in.
     179       89172 :       auto i_ch = _mesh.getSubchannelIndexFromPoint(p);
     180       89172 :       auto subch_type = _mesh.getSubchannelType(i_ch);
     181             :       // project axial heat rate on subchannels
     182             :       {
     183             :         double factor;
     184       89172 :         switch (subch_type)
     185             :         {
     186             :           case EChannelType::CENTER:
     187             :             factor = 1.0 / 6.0;
     188             :             break;
     189       24792 :           case EChannelType::EDGE:
     190             :             factor = 1.0 / 4.0;
     191       24792 :             break;
     192             :           case EChannelType::CORNER:
     193             :             factor = 1.0 / 6.0;
     194             :             break;
     195             :           default:
     196             :             return 0.0; // handle invalid subch_type if needed
     197             :         }
     198      308064 :         for (auto i_pin : _mesh.getChannelPins(i_ch))
     199             :         {
     200      218892 :           heat_rate += factor * _ref_qprime(i_pin) * _pin_power_correction(i_pin) *
     201      218892 :                        _axial_heat_rate.value(_t, P);
     202             :         }
     203       89172 :         return heat_rate;
     204             :       }
     205             :     }
     206             :   }
     207             :   else
     208             :     return 0.0;
     209             : }