AB2PredictorCorrector.h

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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
 
#pragma once
 
// MOOSE includes
#include "TimeStepper.h"
 
// C++ includes
#include <fstream>
 
namespace libMesh
{
template <typename T>
class NumericVector;
}
 
class AB2PredictorCorrector : public TimeStepper
{
public:
  static InputParameters validParams();
 
  AB2PredictorCorrector(const InputParameters & parameters);
 
  virtual void step() override;
  virtual void preExecute() override;
  virtual void preSolve() override;
  virtual void postSolve() override;
  virtual bool converged() const override;
 
protected:
  virtual Real computeDT() override;
  virtual Real computeInitialDT() override;
 
  virtual Real estimateTimeError(NumericVector<Number> & sol);
 
  NumericVector<Number> & _u1;
  NumericVector<Number> & _aux1;
  NumericVector<Number> & _pred1;
 
  Real & _dt_full;
 
  Real & _error;
  Real _e_tol;
  Real _e_max;
  Real _max_increase;
  int _steps_between_increase;
  int & _dt_steps_taken;
  int _start_adapting;
  Real & _my_dt_old;
  Real & _infnorm;
  Real _scaling_parameter;
  std::ofstream myfile;
};