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             : // Navier-Stokes includes
      11             : #include "NSThermalBC.h"
      12             : #include "NS.h"
      13             : 
      14             : // FluidProperties includes
      15             : #include "IdealGasFluidProperties.h"
      16             : 
      17             : registerMooseObject("NavierStokesApp", NSThermalBC);
      18             : 
      19             : InputParameters
      20           0 : NSThermalBC::validParams()
      21             : {
      22           0 :   InputParameters params = NodalBC::validParams();
      23           0 :   params.addClassDescription("NS thermal BC.");
      24           0 :   params.addRequiredCoupledVar(NS::density, "density");
      25           0 :   params.addRequiredParam<Real>("initial", "Initial temperature");
      26           0 :   params.addRequiredParam<Real>("final", "Final temperature");
      27           0 :   params.addRequiredParam<Real>("duration",
      28             :                                 "Time over which temperature ramps up from initial to final");
      29           0 :   params.addRequiredParam<UserObjectName>("fluid_properties",
      30             :                                           "The name of the user object for fluid properties");
      31           0 :   return params;
      32           0 : }
      33             : 
      34           0 : NSThermalBC::NSThermalBC(const InputParameters & parameters)
      35             :   : NodalBC(parameters),
      36           0 :     _rho_var(coupled(NS::density)),
      37           0 :     _rho(coupledValue(NS::density)),
      38           0 :     _initial(getParam<Real>("initial")),
      39           0 :     _final(getParam<Real>("final")),
      40           0 :     _duration(getParam<Real>("duration")),
      41           0 :     _fp(getUserObject<IdealGasFluidProperties>("fluid_properties"))
      42             : {
      43           0 : }
      44             : 
      45             : Real
      46           0 : NSThermalBC::computeQpResidual()
      47             : {
      48             :   Real value;
      49             : 
      50             :   // For constant temperature, set _initial = _final, or set _duration=0 and set _final.
      51             :   //
      52             :   // T(t) = T_i + (T_f - T_i) * sin (pi/2 * t/t_d)
      53           0 :   if (_t < _duration)
      54           0 :     value = _initial + (_final - _initial) * std::sin((0.5 * libMesh::pi) * _t / _duration);
      55             :   else
      56           0 :     value = _final;
      57             : 
      58             :   // For the total energy, the essential BC is:
      59             :   // rho*E = rho*(c_v*T + |u|^2/2)
      60             :   //
      61             :   // or, in residual form, (In general, this BC is coupled to the velocity variables.)
      62             :   // rho*E - rho*(c_v*T + |u|^2/2) = 0
      63             :   //
      64             :   // ***at a no-slip wall*** this further reduces to (no coupling to velocity variables):
      65             :   // rho*E - rho*cv*T = 0
      66             : 
      67             :   // std::ios_base::fmtflags flags = Moose::out.flags();
      68             :   // Moose::out << std::scientific << std::setprecision(16);
      69             :   // Moose::out << "rho*E                        =" << _u[_qp] << std::endl;
      70             :   // Moose::out << "(_p[_qp] * _c_v[_qp] * value)=" << (_p[_qp] * _c_v[_qp] * value) << std::endl;
      71             :   // //Moose::out << "_c_v[_qp]                    =" << _c_v[_qp] << std::endl;
      72             :   // Moose::out.flags(flags);
      73           0 :   return _u[_qp] - (_rho[_qp] * _fp.cv() * value);
      74             : }