RichardsDensityVDW.h

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//* This file is part of the MOOSE framework
//* https://www.mooseframework.org
//*
//* 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 "RichardsDensity.h"
 
class RichardsDensityVDW;
 
template <>
InputParameters validParams<RichardsDensityVDW>();
 
class RichardsDensityVDW : public RichardsDensity
{
public:
  RichardsDensityVDW(const InputParameters & parameters);
 
  Real density(Real p) const;
 
  Real ddensity(Real p) const;
 
  Real d2density(Real p) const;
 
protected:
  Real _a;
 
  Real _b;
 
  Real _rt;
 
  Real _molar_mass;
 
  Real _infinity_ratio;
 
  Real _rhs;
 
  Real _b2oa;
 
  Real _vdw0;
 
  Real _slope0;
 
  Real densityVDW(Real p) const;
};