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/* This file is part of the OpenLB library
*
* Copyright (C) 2015 Peter Weisbrod
* E-mail contact: info@openlb.net
* The most recent release of OpenLB can be downloaded at
* <http://www.openlb.net/>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef INTERACTION_POTENTIAL_H
#define INTERACTION_POTENTIAL_H
/**
* The functor dimensions are given by F: S^m -> T^n (S=source, T=target)
* and are implemented via GenericF(n,m).
* Don't get confused by the flipped order of source and target.
*/
namespace olb {
// established -- original for both single- and multicomponent flow
template <typename T, typename S>
class ShanChen93 : public AnalyticalF1D<T,S> {
private:
T _rhoZero;
public:
ShanChen93(T rhoZero=1.);
bool operator() (T psi[], const S rho[]);
};
// established -- only multicomponent flow
template <typename T, typename S>
class PsiEqualsRho : public AnalyticalF1D<T,S> {
private:
public:
PsiEqualsRho();
bool operator() (T psi[], const S rho[]) override;
};
// established -- only singlecomponent flow
template <typename T, typename S>
class ShanChen94 : public AnalyticalF1D<T,S> {
private:
T _rhoZero;
T _psiZero;
public:
ShanChen94(T rhoZero=200., T psiZero=4.);
bool operator() (T psi[], const S rho[]) override;
};
template <typename T, typename S>
class PengRobinson : public AnalyticalF1D<T,S> {
private:
T _G;
T _acentricFactor;
T _a;
T _b;
T _R;
T _alpha;
T _t;
T _tc;
public:
PengRobinson(T G, T acentricFactor=0.334, T a=2./49., T b=2./21., T tr=.8);
bool operator() (T psi[], const S rho[]);
// second operator allows to incorporate temperature changes
bool operator() (T psi[], const S rho[], const S t[]);
};
template <typename T, typename S>
class CarnahanStarling : public AnalyticalF1D<T,S> {
private:
T _G;
T _a;
T _b;
T _R;
T _t;
public:
CarnahanStarling(T G, T a=1., T b=4., T tr=.7);
bool operator() (T psi[], const S rho[]) override;
// second operator allows to incorporate temperature changes
bool operator() (T psi[], const S rho[], const S t[]);
};
// under development -- for singlecomponent flow
// 0.5 -> psiZero=0.65
// 1 -> psiZero=1.9
// 1.5 -> psiZero=3.5
// 2. -> psiZero=5,45
template <typename T, typename S>
class Krause : public AnalyticalF1D<T,S> {
private:
T _rhoZero;
T _psiZero;
public:
Krause(T rhoZero=1., T psiZero=1.9);
bool operator() (T psi[], const S rho[]);
};
template <typename T, typename S> // density of liquid phase always equals rhoZero for G=-1
class WeisbrodKrause : public AnalyticalF1D<T,S> {
private:
T _rhoZero;
T _sigmu;
public:
WeisbrodKrause(T rhoZero=1., T sigmu=1.);
bool operator() (T psi[], const S rho[]);
};
template <typename T, typename S> // not very good
class Normal : public AnalyticalF1D<T,S> {
private:
T _sigma;
T _mu;
public:
Normal(T sigma=1., T mu=1.);
bool operator() (T psi[], const S rho[]);
};
} // end namespace olb
#endif
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