FunctionDirichletBC.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 "FunctionDirichletBC.h"
#include "Function.h"

registerMooseObject("MooseApp", FunctionDirichletBC);

InputParameters
FunctionDirichletBC::validParams()
{
  InputParameters params = DirichletBCBase::validParams();
  params.addRequiredParam<FunctionName>("function", "The forcing function.");
  params.addClassDescription(
      "Imposes the essential boundary condition $u=g(t,\\vec{x})$, where $g$ "
      "is a (possibly) time and space-dependent MOOSE Function.");
  return params;
}

FunctionDirichletBC::FunctionDirichletBC(const InputParameters & parameters)
  : DirichletBCBase(parameters), _func(getFunction("function"))
{
}

Real
FunctionDirichletBC::computeQpValue()
{
  return _func.value(_t, *_current_node);
}