olb::collision::AdvectionDiffusionRLB::type< DESCRIPTOR, MOMENTA, EQUILIBRIUM > Struct Template Reference

#include <collision.h>

Collaboration diagram for olb::collision::AdvectionDiffusionRLB::type< DESCRIPTOR, MOMENTA, EQUILIBRIUM >:

Public Types
using	MomentaF = typename MOMENTA::template type<DESCRIPTOR>
using	EquilibriumF = typename EQUILIBRIUM::template type<DESCRIPTOR,MOMENTA>

Public Member Functions
template<CONCEPT(MinimalCell) CELL, typename PARAMETERS , typename V = typename CELL::value_t>
CellStatistic< V >	apply (CELL &cell, PARAMETERS &parameters) any_platform

Detailed Description

template<typename DESCRIPTOR, typename MOMENTA, typename EQUILIBRIUM>
struct olb::collision::AdvectionDiffusionRLB::type< DESCRIPTOR, MOMENTA, EQUILIBRIUM >

Definition at line 118 of file collision.h.

Member Typedef Documentation

EquilibriumF

template<typename DESCRIPTOR , typename MOMENTA , typename EQUILIBRIUM >

using olb::collision::AdvectionDiffusionRLB::type< DESCRIPTOR, MOMENTA, EQUILIBRIUM >::EquilibriumF = typename EQUILIBRIUM::template type<DESCRIPTOR,MOMENTA>

Definition at line 120 of file collision.h.

MomentaF

template<typename DESCRIPTOR , typename MOMENTA , typename EQUILIBRIUM >

using olb::collision::AdvectionDiffusionRLB::type< DESCRIPTOR, MOMENTA, EQUILIBRIUM >::MomentaF = typename MOMENTA::template type<DESCRIPTOR>

Definition at line 119 of file collision.h.

Member Function Documentation

apply()

template<typename DESCRIPTOR , typename MOMENTA , typename EQUILIBRIUM >

template<CONCEPT(MinimalCell) CELL, typename PARAMETERS , typename V = typename CELL::value_t>

CellStatistic< V > olb::collision::AdvectionDiffusionRLB::type< DESCRIPTOR, MOMENTA, EQUILIBRIUM >::apply ( CELL & cell, PARAMETERS & parameters )

inline

Definition at line 123 of file collision.h.

                                                                            {
      V fEq[DESCRIPTOR::q] { };
      const auto statistic = EquilibriumF().compute(cell, parameters, fEq);
      V j1[DESCRIPTOR::d] { };
      for (int iPop=0; iPop < DESCRIPTOR::q; ++iPop ) {
        for (int iD=0; iD < DESCRIPTOR::d; ++iD ) {
          j1[iD] += descriptors::c<DESCRIPTOR>(iPop,iD) * (cell[iPop] - fEq[iPop]);
        }
      }
      const V omega = parameters.template get<descriptors::OMEGA>();
      for (int iPop=0; iPop < DESCRIPTOR::q; ++iPop ) {
        V fNeq{};
        for (int iD=0; iD < DESCRIPTOR::d; ++iD) {
          fNeq += descriptors::c<DESCRIPTOR>(iPop,iD) * j1[iD];
        }
        fNeq *= descriptors::t<V,DESCRIPTOR>(iPop) * descriptors::invCs2<V,DESCRIPTOR>();
        cell[iPop] = fEq[iPop] + (V{1} - omega) * fNeq;
      }
      return statistic;
    };

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The documentation for this struct was generated from the following file:

• src/dynamics/collision.h