PressureGradient.C

Go to the documentation of this file.

//* This file is part of the MOOSE framework
//* https://www.mooseframework.org
//*
//* 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 "PressureGradient.h"
 
registerMooseObject("NavierStokesApp", PressureGradient);
 
template <>
InputParameters
validParams<PressureGradient>()
{
  InputParameters params = validParams<Kernel>();
  params.addRequiredCoupledVar("pressure", "pressure");
  params.addRequiredParam<unsigned int>("component", "number of component (0 = x, 1 = y, 2 = z)");
  return params;
}
 
PressureGradient::PressureGradient(const InputParameters & parameters)
  : Kernel(parameters),
    _component(getParam<unsigned int>("component")),
    _pressure(coupledValue("pressure"))
{
}
 
Real
PressureGradient::computeQpResidual()
{
  return -_pressure[_qp] * _grad_test[_i][_qp](_component);
}
 
Real
PressureGradient::computeQpJacobian()
{
  return 0.;
}