EnthalpyAux.C

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#include "EnthalpyAux.h"
#include "NS.h"

registerMooseObject("NavierStokesApp", EnthalpyAux);

InputParameters
EnthalpyAux::validParams()
{
  InputParameters params = AuxKernel::validParams();
  params.addRequiredCoupledVar("rho", "Density");
  params.addRequiredCoupledVar("rho_et", "Total energy");
  params.addCoupledVar(NS::pressure, "Coupled value pressure");
  params.addClassDescription("This AuxKernel computes the specific enthalpy of the fluid"
                             "from the total energy and the pressure.");

  return params;
}

EnthalpyAux::EnthalpyAux(const InputParameters & parameters)
  : AuxKernel(parameters),
    _rho(coupledValue("rho")),
    _rho_et(coupledValue("rho_et")),
    _pressure(coupledValue(NS::pressure))
{
}

Real
EnthalpyAux::computeValue()
{
  return (_rho_et[_qp] + _pressure[_qp]) / _rho[_qp];
}