olb::fd::DiffusionScheme< D, T, tag::CENTRAL_WITH_ANTIDIFFUSIVITY > Struct Template Reference

#include <centralWithAntidiffusivity.h>

Inheritance diagram for olb::fd::DiffusionScheme< D, T, tag::CENTRAL_WITH_ANTIDIFFUSIVITY >:

Collaboration diagram for olb::fd::DiffusionScheme< D, T, tag::CENTRAL_WITH_ANTIDIFFUSIVITY >:

Public Member Functions
	DiffusionScheme ()=delete

Static Public Member Functions
template<typename PARAMETERS >
static T	apply (T &f0, T f[], T F[], T u[], PARAMETERS &params)
Static Public Member Functions inherited from olb::fd::FdScheme< tag::CENTRAL_WITH_ANTIDIFFUSIVITY >
static constexpr int	extent ()

Detailed Description

template<unsigned D, typename T>
struct olb::fd::DiffusionScheme< D, T, tag::CENTRAL_WITH_ANTIDIFFUSIVITY >

Definition at line 45 of file centralWithAntidiffusivity.h.

Constructor & Destructor Documentation

DiffusionScheme()

template<unsigned D, typename T >

olb::fd::DiffusionScheme< D, T, tag::CENTRAL_WITH_ANTIDIFFUSIVITY >::DiffusionScheme ( )

delete

Member Function Documentation

apply()

template<unsigned D, typename T >

template<typename PARAMETERS >

T olb::fd::DiffusionScheme< D, T, tag::CENTRAL_WITH_ANTIDIFFUSIVITY >::apply ( T & f0, T f[], T F[], T u[], PARAMETERS & params )

static

Definition at line 37 of file centralWithAntidiffusivity.hh.

{
  T fNew  = 0.;
  T fCorr = 0.; // Negative-diffusivity correction to counterbalance upwind schemes' numerical diffusivity
  for (unsigned iD=0; iD<D; ++iD) {
    fNew  +=  F[getArrayPos<1>(0,iD)] + f[getArrayPos<1>(0,iD)];
    fCorr += (F[getArrayPos<1>(0,iD)] + f[getArrayPos<1>(0,iD)] - 2.*f0) * abs(u[iD]);
  }
  fNew -= 2.*D*f0;
  return fNew * params.template get<fdParams::Diffusivity>()
         - 0.5 * fCorr * params.template get<fdParams::AntiDiffusivityTuning>();
}

References olb::abs().

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

• src/reaction/explicitFiniteDifference/fdSchemeSpecs/centralWithAntidiffusivity.h
• src/reaction/explicitFiniteDifference/fdSchemeSpecs/centralWithAntidiffusivity.hh