FixedPointIterationAdaptiveDT.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

#include "TimeStepper.h"

class FixedPointIterationAdaptiveDT : public TimeStepper
{
public:
  static InputParameters validParams();

  FixedPointIterationAdaptiveDT(const InputParameters & parameters);

  virtual void init() override;
  virtual void acceptStep() override;

protected:
  virtual Real computeInitialDT() override;
  virtual Real computeDT() override;

  const Real _dt_initial;

  const unsigned int _target_center;
  const unsigned int _target_window;
  const unsigned int _target_min;
  const unsigned int _target_max;

  const Real _increase_factor;
  const Real _decrease_factor;

  Real & _dt_old;
  unsigned int & _fp_its;
};