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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 -- generic implementation.
*/
#ifndef ADVECTION_DIFFUSION_DYNAMICS_HH
#define ADVECTION_DIFFUSION_DYNAMICS_HH
#include <algorithm>
#include <limits>
#include "advectionDiffusionDynamics.h"
#include "dynamics/lbHelpers.h"
namespace olb {
////////////////////// Class AdvectionDiffusionRLBdynamics //////////////////////////
/** \param omega_ relaxation parameter, related to the dynamic viscosity
* \param momenta_ a Momenta object to know how to compute velocity momenta
*/
//==================================================================//
//============= Regularized Model for Advection diffusion===========//
//==================================================================//
template<typename T, typename DESCRIPTOR>
AdvectionDiffusionRLBdynamics<T, DESCRIPTOR>::AdvectionDiffusionRLBdynamics (
T omega_, Momenta<T, DESCRIPTOR>& momenta_ )
: BasicDynamics<T, DESCRIPTOR>( momenta_ ),
omega( omega_ )
{ }
template<typename T, typename DESCRIPTOR>
T AdvectionDiffusionRLBdynamics<T, DESCRIPTOR>::computeEquilibrium( int iPop, T rho,
const T u[DESCRIPTOR::d], T uSqr ) const
{
return lbHelpers<T, DESCRIPTOR>::equilibriumFirstOrder( iPop, rho, u );
}
template<typename T, typename DESCRIPTOR>
void AdvectionDiffusionRLBdynamics<T, DESCRIPTOR>::collide( Cell<T, DESCRIPTOR>& cell,
LatticeStatistics<T>& statistics )
{
T temperature = this->_momenta.computeRho( cell );
const T* u = cell.template getFieldPointer<descriptors::VELOCITY>();
T uSqr = lbHelpers<T, DESCRIPTOR>::
rlbCollision( cell, temperature, u, omega );
statistics.incrementStats( temperature, uSqr );
}
template<typename T, typename DESCRIPTOR>
T AdvectionDiffusionRLBdynamics<T, DESCRIPTOR>::getOmega() const
{
return omega;
}
template<typename T, typename DESCRIPTOR>
void AdvectionDiffusionRLBdynamics<T, DESCRIPTOR>::setOmega( T omega_ )
{
omega = omega_;
}
////////////////////// Class CombinedAdvectionDiffusionRLBdynamics /////////////////////////
template<typename T, typename DESCRIPTOR, typename Dynamics>
CombinedAdvectionDiffusionRLBdynamics<T,DESCRIPTOR,Dynamics>::CombinedAdvectionDiffusionRLBdynamics (
T omega, Momenta<T,DESCRIPTOR>& momenta )
: BasicDynamics<T,DESCRIPTOR>(momenta),
_boundaryDynamics(omega, momenta)
{ }
template<typename T, typename DESCRIPTOR, typename Dynamics>
T CombinedAdvectionDiffusionRLBdynamics<T,DESCRIPTOR,Dynamics>::
computeEquilibrium(int iPop, T rho, const T u[DESCRIPTOR::d], T uSqr) const
{
return lbHelpers<T, DESCRIPTOR>::equilibriumFirstOrder( iPop, rho, u );
}
template<typename T, typename DESCRIPTOR, typename Dynamics>
void CombinedAdvectionDiffusionRLBdynamics<T,DESCRIPTOR,Dynamics>::collide (
Cell<T,DESCRIPTOR>& cell,
LatticeStatistics<T>& statistics )
{
typedef DESCRIPTOR L;
T temperature = this->_momenta.computeRho( cell );
const T* u = cell.template getFieldPointer<descriptors::VELOCITY>();
T jNeq[DESCRIPTOR::d];
// this->_momenta.computeJ( cell, jNeq );
dynamic_cast<AdvectionDiffusionBoundaryMomenta<T,DESCRIPTOR>&>(this->_momenta).computeJneq( cell, jNeq );
// cout << jNeq[0] << " " << jNeq[1] << " " << u[0] << " " << u[1] << endl;
// stripe of equilibrium part u * T
// for ( int iD = 0; iD < DESCRIPTOR::d; ++iD ) {
// jNeq[iD] -= u[iD] * temperature;
// }
// cout << jNeq[0] << " " << jNeq[1] << " " << u[0] << " " << u[1] << endl;
for (int iPop = 0; iPop < L::q; ++iPop) {
cell[iPop] = lbHelpers<T, DESCRIPTOR>::equilibriumFirstOrder( iPop, temperature, u )
+ firstOrderLbHelpers<T,DESCRIPTOR>::fromJneqToFneq(iPop, jNeq);
// cout << firstOrderLbHelpers<T,DESCRIPTOR>::fromJneqToFneq(iPop,jNeq) << " ";
}
// cout << endl;
// lbHelpers<T,DESCRIPTOR>::computeJ(cell, jNeq);
// cout << jNeq[0] << " " << jNeq[1] << " " << u[0] << " " << u[1] << endl;
_boundaryDynamics.collide(cell, statistics);
// lbHelpers<T,DESCRIPTOR>::computeJ(cell, jNeq);
// cout << jNeq[0] << " " << jNeq[1] << " " << u[0] << " " << u[1] << endl;
}
template<typename T, typename DESCRIPTOR, typename Dynamics>
T CombinedAdvectionDiffusionRLBdynamics<T,DESCRIPTOR,Dynamics>::getOmega() const
{
return _boundaryDynamics.getOmega();
}
template<typename T, typename DESCRIPTOR, typename Dynamics>
void CombinedAdvectionDiffusionRLBdynamics<T,DESCRIPTOR,Dynamics>::setOmega(T omega)
{
_boundaryDynamics.setOmega(omega);
}
//==================================================================//
//============= BGK Model for Advection diffusion===========//
//==================================================================//
template<typename T, typename DESCRIPTOR>
AdvectionDiffusionBGKdynamics<T, DESCRIPTOR>::AdvectionDiffusionBGKdynamics (
T omega, Momenta<T, DESCRIPTOR>& momenta )
: BasicDynamics<T, DESCRIPTOR>( momenta ),
_omega(omega)
{ }
template<typename T, typename DESCRIPTOR>
AdvectionDiffusionBGKdynamics<T, DESCRIPTOR>::AdvectionDiffusionBGKdynamics (
const UnitConverter<T,DESCRIPTOR>& converter, Momenta<T, DESCRIPTOR>& momenta )
: BasicDynamics<T, DESCRIPTOR>( momenta ),
_omega(converter.getLatticeRelaxationFrequency())
{ }
template<typename T, typename DESCRIPTOR>
T AdvectionDiffusionBGKdynamics<T, DESCRIPTOR>::computeEquilibrium( int iPop, T rho,
const T u[DESCRIPTOR::d], T uSqr ) const
{
return lbHelpers<T, DESCRIPTOR>::equilibriumFirstOrder( iPop, rho, u );
}
template<typename T, typename DESCRIPTOR>
void AdvectionDiffusionBGKdynamics<T, DESCRIPTOR>::collide( Cell<T, DESCRIPTOR>& cell,
LatticeStatistics<T>& statistics )
{
T temperature = this->_momenta.computeRho( cell );
const T* u = cell.template getFieldPointer<descriptors::VELOCITY>();
T uSqr = lbHelpers<T, DESCRIPTOR>::
bgkCollision( cell, temperature, u, _omega );
statistics.incrementStats( temperature, uSqr );
}
template<typename T, typename DESCRIPTOR>
T AdvectionDiffusionBGKdynamics<T, DESCRIPTOR>::getOmega() const
{
return _omega;
}
template<typename T, typename DESCRIPTOR>
void AdvectionDiffusionBGKdynamics<T, DESCRIPTOR>::setOmega( T omega )
{
_omega = omega;
}
//==================================================================//
//============= TRT Model for Advection diffusion===========//
//==================================================================//
template<typename T, typename DESCRIPTOR>
AdvectionDiffusionTRTdynamics<T, DESCRIPTOR>::AdvectionDiffusionTRTdynamics (
T omega, Momenta<T, DESCRIPTOR>& momenta, T magicParameter )
: AdvectionDiffusionBGKdynamics<T, DESCRIPTOR>( omega, momenta ),
_omega2(1/(magicParameter/(1/omega-0.5)+0.5)), _magicParameter(magicParameter)
{ }
template<typename T, typename DESCRIPTOR>
void AdvectionDiffusionTRTdynamics<T, DESCRIPTOR>::collide( Cell<T, DESCRIPTOR>& cell,
LatticeStatistics<T>& statistics )
{
T temperature = this->_momenta.computeRho( cell );
const T* u = cell.template getFieldPointer<descriptors::VELOCITY>();
T fPlus[DESCRIPTOR::q], fMinus[DESCRIPTOR::q];
T fEq[DESCRIPTOR::q], fEqPlus[DESCRIPTOR::q], fEqMinus[DESCRIPTOR::q];</
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