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/* This file is part of the OpenLB library
*
* Copyright (C) 2017 Albert Mink
* 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 RTLBM_BOUNDARY_DYNAMICS_H
#define RTLBM_BOUNDARY_DYNAMICS_H
#include "dynamics/dynamics.h"
namespace olb {
/** Defines incoming (axis parallel) directions on flat walls.
*
* \param directions takes values 0, 1, 2; which corresponds to x, y, z plane normal
* \param orientation takes values -1, 1; which is the sign of plane normal
*
* Note:
* Dynamics computes the arriving density on walls and redistributes it equally to
* all inward pointing directions.
*/
template<typename T, typename DESCRIPTOR, int direction, int orientation>
class RtlbmDiffuseBoundaryDynamics : public BasicDynamics<T,DESCRIPTOR> {
public:
/// Constructor
RtlbmDiffuseBoundaryDynamics(T omega_, Momenta<T,DESCRIPTOR>& momenta_);
/// Compute equilibrium distribution function
T computeEquilibrium(int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr) const override;
/// Collision step for flat boundary
void collide(Cell<T,DESCRIPTOR>& cell, LatticeStatistics<T>& statistics) override;
/// place holder
T getOmega() const override;
/// place holder
void setOmega(T omega_) override;
};
template<typename T, typename DESCRIPTOR, int plane, int normal1, int normal2>
class RtlbmDiffuseEdgeBoundaryDynamics : public BasicDynamics<T,DESCRIPTOR> {
public:
/// Constructor
RtlbmDiffuseEdgeBoundaryDynamics(T omega_, Momenta<T,DESCRIPTOR>& momenta_);
/// Compute equilibrium distribution function
T computeEquilibrium(int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr) const override;
/// Collision step for flat boundary
void collide(Cell<T,DESCRIPTOR>& cell, LatticeStatistics<T>& statistics) override;
/// place holder
T getOmega() const override;
/// place holder
void setOmega(T omega_) override;
};
template<typename T, typename DESCRIPTOR, int xNormal, int yNormal, int zNormal>
class RtlbmDiffuseCornerBoundaryDynamics : public BasicDynamics<T,DESCRIPTOR> {
public:
/// Constructor
RtlbmDiffuseCornerBoundaryDynamics(T omega_, Momenta<T,DESCRIPTOR>& momenta_);
/// Compute equilibrium distribution function
T computeEquilibrium(int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr) const override;
/// Collision step for corner
void collide(Cell<T,DESCRIPTOR>& cell, LatticeStatistics<T>& statistics) override;
/// place holder
T getOmega() const override;
/// place holder
void setOmega(T omega_) override;
};
/** Defines incoming directions on flat walls.
* Emposed dirichlet density is distributed equivalently to all incoming/unkown directions.
*
* \param directions takes values 0, 1, 2; which corresponds to x, y, z plane normal
* \param orientation takes values -1, 1; which is the sign of plane normal
*
* Note:
* Dynamics ensure that cell has constant 0th moment.
* To set the constant 0th moment defineRho() must be called.
*/
template<typename T, typename DESCRIPTOR, int direction, int orientation>
class RtlbmDiffuseConstBoundaryDynamics : public BasicDynamics<T,DESCRIPTOR> {
public:
/// Constructor
RtlbmDiffuseConstBoundaryDynamics(T omega_, Momenta<T,DESCRIPTOR>& momenta_);
/// Compute equilibrium distribution function
T computeEquilibrium(int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr) const override;
/// Collision step for flat boundary
void collide(Cell<T,DESCRIPTOR>& cell, LatticeStatistics<T>& statistics) override;
/// place holder
T getOmega() const override;
/// place holder
void setOmega(T omega_) override;
};
/** Defines incoming directions on edge boundaries.
* Emposed dirichlet density is distributed equivalently to all incoming/unkown directions.
*
* \param plane takes values 0, 1, 2; which denotes the alignment of edge either along x, y or z axis
* \param normal1 takes values -1 or 1; normal orientation of a surface side 'right'
* \param normal2 takes values -1 or 1; normal orientation of a surface side 'left'
*/
template<typename T, typename DESCRIPTOR, int plane, int normal1, int normal2>
class RtlbmDiffuseConstEdgeBoundaryDynamics : public BasicDynamics<T,DESCRIPTOR> {
public:
/// Constructor
RtlbmDiffuseConstEdgeBoundaryDynamics(T omega_, Momenta<T,DESCRIPTOR>& momenta_);
/// Compute equilibrium distribution function
T computeEquilibrium(int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr) const override;
/// Collision step for edges
void collide(Cell<T,DESCRIPTOR>& cell, LatticeStatistics<T>& statistics) override;
/// place holder
T getOmega() const override;
/// place holder
void setOmega(T omega_) override;
};
/** Defines incoming directions on corner boundaries.
* Emposed dirichlet density is distributed equivalently to all incoming/unkown directions.
*
* \param xNormal takes value -1 or 1
* \param yNormal takes value -1 or 1
* \param zNormal takes value -1 or 1
*/
template<typename T, typename DESCRIPTOR, int xNormal, int yNormal, int zNormal>
class RtlbmDiffuseConstCornerBoundaryDynamics : public BasicDynamics<T,DESCRIPTOR> {
public:
/// Constructor
RtlbmDiffuseConstCornerBoundaryDynamics(T omega_, Momenta<T,DESCRIPTOR>& momenta_);
/// Compute equilibrium distribution function
T computeEquilibrium(int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr) const override;
/// Collision step for corner
void collide(Cell<T,DESCRIPTOR>& cell, LatticeStatistics<T>& statistics) override;
/// place holder
T getOmega() const override;
/// place holder
void setOmega(T omega_) override;
};
template<typename T, typename DESCRIPTOR, int direction, int orientation>
class RtlbmDirectedBoundaryDynamics : public BasicDynamics<T,DESCRIPTOR> {
public:
/// Constructor
RtlbmDirectedBoundaryDynamics(T omega_, Momenta<T,DESCRIPTOR>& momenta_);
/// Compute equilibrium distribution function
T computeEquilibrium(int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr) const override;
/// Collision step for directed boundary walls
void collide(Cell<T,DESCRIPTOR>& cell, LatticeStatistics<T>& statistics) override;
/// place holder
T getOmega() const override;
/// place holder
void setOmega(T omega_) override;
};
} // namespace olb
#endif
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