PseudoTimestep.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 "GeneralPostprocessor.h"
 
class PseudoTimestep : public GeneralPostprocessor
{
public:
  static InputParameters validParams();
  PseudoTimestep(const InputParameters & parameters);
 
  virtual void execute() override;
  virtual void initialize() override;
  using Postprocessor::getValue;
  virtual Real getValue() const override;
 
  enum class PseudotimeMethod
  {
    SER,
    RDM,
    EXP
  };
 
protected:
  const PseudotimeMethod _method;
 
  const Real _initial_dt;
  const Real _alpha;
 
  unsigned int _iterations_window;
 
  bool _bound;
 
  Real _max_dt;
 
  Real _dt;
 
  std::vector<Real> & _residual_norms_sequence;
  std::vector<Real> & _iterations_step_sequence;
 
  Real currentResidualNorm() const;
 
  Real timestepSER() const;
 
  Real timestepEXP() const;
 
  Real timestepRDM() const;
 
  void outputPseudoTimestep(Real curr_dt) const;
};