KocksMeckingFlowViscosity.h

// Copyright 2024, UChicago Argonne, LLC
// All Rights Reserved
// Software Name: NEML2 -- the New Engineering material Model Library, version 2
// By: Argonne National Laboratory
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#pragma once
 
#include "neml2/models/Model.h"
 
namespace neml2
{
class Scalar;
 
class KocksMeckingFlowViscosity : public Model
{
public:
  static OptionSet expected_options();
 
  KocksMeckingFlowViscosity(const OptionSet & options);
 
protected:
  void set_value(bool out, bool dout_din, bool d2out_din2) override;
 
  const Scalar & _A;
 
  const Scalar & _B;
 
  const Scalar & _mu;
 
  const double _eps0;
 
  const double _k;
 
  const double _b3;
 
  const Variable<Scalar> & _T;
 
  Variable<Scalar> & _eta;
};
}