PorousFlowCapillaryPressureVG.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 "PorousFlowCapillaryPressure.h"

class PorousFlowCapillaryPressureVG : public PorousFlowCapillaryPressure
{
public:
  static InputParameters validParams();

  PorousFlowCapillaryPressureVG(const InputParameters & parameters);

  virtual Real capillaryPressureCurve(Real saturation, unsigned qp = 0) const override;
  virtual Real dCapillaryPressureCurve(Real saturation, unsigned qp = 0) const override;
  virtual Real d2CapillaryPressureCurve(Real saturation, unsigned qp = 0) const override;

  virtual Real effectiveSaturation(Real pc, unsigned qp = 0) const override;
  virtual Real dEffectiveSaturation(Real pc, unsigned qp = 0) const override;
  virtual Real d2EffectiveSaturation(Real pc, unsigned qp = 0) const override;

protected:
  const Real _m;
  const Real _alpha;
  const Real _s_scale;
  const Real _pc_sscale;
};