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/* This file is part of the OpenLB library
*
* Copyright (C) 2008 Orestis Malaspinas, Andrea Parmigiani
* 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.
*/
/** \file
* A collection of dynamics classes (e.g. BGK) with which a Cell object
* can be instantiated -- header file.
*/
#ifndef POROUS_ADVECTION_DIFFUSION_DYNAMICS_H
#define POROUS_ADVECTION_DIFFUSION_DYNAMICS_H
#include "dynamics/dynamics.h"
#include "core/cell.h"
namespace olb {
// ===== the porous BGK advection diffusion dynamics =====//
/// This approach contains a slight error in the diffusion term.
template<typename T, typename DESCRIPTOR>
class PorousAdvectionDiffusionBGKdynamics : public BasicDynamics<T, DESCRIPTOR> {
public:
/// Constructor
PorousAdvectionDiffusionBGKdynamics( T omega, Momenta<T, DESCRIPTOR>& momenta, T tSolid );
PorousAdvectionDiffusionBGKdynamics( const UnitConverter<T,DESCRIPTOR>& converter, Momenta<T, DESCRIPTOR>& momenta, T tSolid );
/// Compute equilibrium distribution function
T computeEquilibrium( int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr ) const override;
/// Collision step
void collide( Cell<T, DESCRIPTOR>& cell, LatticeStatistics<T>& statistics ) override;
/// Get local relaxation parameter of the dynamics
T getOmega() const override;
/// Set local relaxation parameter of the dynamics
void setOmega( T omega ) override;
/// Set local relaxation parameter of the dynamics
T computeRho( const Cell<T, DESCRIPTOR>& cell ) const override;
private:
T scaleTemp(const T rho, const T porosity) const; // scales temperature relative to porosity
T _omega; ///< relaxation parameter
T _tSolid; // temperature in lattice units of material with porosity 0;
};
} // namespace olb
#endif
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