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 "SCMHTCDittusBoelter.h"
      11             : 
      12             : registerMooseObject("SubChannelApp", SCMHTCDittusBoelter);
      13             : 
      14             : InputParameters
      15         313 : SCMHTCDittusBoelter::validParams()
      16             : {
      17             :   // Enumerations
      18         626 :   MooseEnum factors("Presser Weisman none", "Presser");
      19         313 :   InputParameters params = SCMHTCClosureBase::validParams();
      20         313 :   params.addClassDescription(
      21             :       "Class that computes the convective heat transfer coefficient using the "
      22             :       "Dittus Boelter correlation.");
      23         626 :   params.addParam<MooseEnum>(
      24             :       "correction_factor",
      25             :       factors,
      26             :       "Correction factor modeling the effect of the fuel-pin bundle. Default is Presser");
      27         313 :   return params;
      28         313 : }
      29             : 
      30         166 : SCMHTCDittusBoelter::SCMHTCDittusBoelter(const InputParameters & parameters)
      31             :   : SCMHTCClosureBase(parameters),
      32         166 :     _is_tri_lattice(dynamic_cast<const TriSubChannelMesh *>(&_subchannel_mesh) != nullptr),
      33         498 :     _correction_factor(getParam<MooseEnum>("correction_factor"))
      34             : {
      35         166 : }
      36             : 
      37             : Real
      38      268208 : SCMHTCDittusBoelter::computeNusseltNumber(const FrictionStruct & /*friction_args*/,
      39             :                                           const NusseltStruct & nusselt_args) const
      40             : {
      41      268208 :   const auto pre = computeNusseltNumberPreInfo(nusselt_args);
      42             : 
      43      268208 :   if (pre.Pr < 0.7 || pre.Pr > 1.6e2)
      44           0 :     flagSolutionWarning("Prandtl number (Pr) out of range for the Dittus-Boelter correlation.");
      45             : 
      46      268208 :   const auto corr = computeCorrectionFactor(pre.poD);
      47      268208 :   const Real psi = corr.psi;
      48      268208 :   const Real b = corr.b;
      49      268208 :   auto NuT = 0.023 * std::pow(pre.Re, 0.8) * std::pow(pre.Pr, b);
      50      268208 :   NuT *= psi;
      51             : 
      52      268208 :   return blendTurbulentNusseltNumber(pre, NuT);
      53             : }
      54             : 
      55             : SCMHTCDittusBoelter::CorrectionResult
      56      268208 : SCMHTCDittusBoelter::computeCorrectionFactor(const Real poD) const
      57             : {
      58             :   CorrectionResult result;
      59             : 
      60      268208 :   switch (_correction_factor)
      61             :   {
      62      130752 :     case 0: // Presser
      63             :     {
      64             :       result.b = 0.4;
      65             : 
      66      130752 :       if (_is_tri_lattice)
      67             :       {
      68       59976 :         if (poD < 1.05 || poD > 2.2)
      69           0 :           flagSolutionWarning("P/D out of range for Presser correction factor (triangular).");
      70             : 
      71       59976 :         result.psi = 0.9090 + 0.0783 * poD - 0.1283 * std::exp(-2.4 * (poD - 1.0));
      72             :       }
      73             :       else
      74             :       {
      75       70776 :         if (poD < 1.05 || poD > 1.9)
      76        4490 :           flagSolutionWarning("P/D out of range for Presser correction factor (square).");
      77             : 
      78       70776 :         result.psi = 0.9217 + 0.1478 * poD - 0.1130 * std::exp(-7.0 * (poD - 1.0));
      79             :       }
      80      130752 :       return result;
      81             :     }
      82             : 
      83       59976 :     case 1: // Weisman
      84             :     {
      85             :       result.b = 0.333;
      86             : 
      87       59976 :       if (_is_tri_lattice)
      88             :       {
      89       59976 :         if (poD < 1.1 || poD > 1.5)
      90           0 :           flagSolutionWarning("P/D out of range for Weisman correction factor (triangular).");
      91             : 
      92       59976 :         result.psi = 1.130 * poD - 0.2609;
      93             :       }
      94             :       else
      95             :       {
      96           0 :         if (poD < 1.1 || poD > 1.3)
      97           0 :           flagSolutionWarning("P/D out of range for Weisman correction factor (square).");
      98             : 
      99           0 :         result.psi = 1.826 * poD - 1.0430;
     100             :       }
     101       59976 :       return result;
     102             :     }
     103             : 
     104       77480 :     case 2: // "none": no bundle correction, keep classical Dittus-Boelter exponent (b = 0.4)
     105             :     default:
     106             :     {
     107             :       result.psi = 1.0;
     108             :       result.b = 0.4;
     109       77480 :       return result;
     110             :     }
     111             :   }
     112             : }