DirichletBCModifier.C

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//* This file is part of the MOOSE framework
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//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
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//* Licensed under LGPL 2.1, please see LICENSE for details
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#include "DirichletBCModifier.h"
 
registerMooseObject("StochasticToolsTestApp", DirichletBCModifier);
 
InputParameters
DirichletBCModifier::validParams()
{
  InputParameters params = DirichletBCBase::validParams();
  params.addRequiredParam<Real>("value", "Value of the BC.");
  params.declareControllable("value");
  params.addClassDescription("Subtracts a constant value from the residual at the "
                             "boundary nodes. It can be used as a modifier for the "
                             "DirichletBC, but cannot be used alone.");
  return params;
}
 
DirichletBCModifier::DirichletBCModifier(const InputParameters & parameters)
  : DirichletBCBase(parameters), _value(getParam<Real>("value"))
{
}
 
Real
DirichletBCModifier::computeQpValue()
{
  // Since the definition in DirichletBCBase is _u[qp] - computeQpValue() and
  // we want - _value only.
  return _u[_qp] + _value;
}