FunctionDT.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"
#include "FunctionInterface.h"
#include "LinearInterpolation.h"
 
class Function;
 
class FunctionDT : public TimeStepper, public FunctionInterface
{
public:
  static InputParameters validParams();
 
  FunctionDT(const InputParameters & parameters);
 
  virtual void init() override;
 
  virtual void postStep() override;
 
protected:
  virtual Real computeInitialDT() override;
  virtual Real computeDT() override;
 
  void removeOldKnots();
 
  const std::vector<Real> & _time_t;
  const std::vector<Real> & _time_dt;
 
  bool _use_function;
  const Function * _function;
 
  std::unique_ptr<LinearInterpolation> _time_ipol;
 
  Real _growth_factor;
  Real _min_dt;
 
  bool _interpolate;
 
  std::vector<Real> _time_knots;
};