amrex::FFT::Poisson< MF > Class Template Reference

Poisson solver for periodic, Dirichlet & Neumann boundaries using FFT. More...

#include <AMReX_FFT_Poisson.H>

Public Member Functions
	Poisson (Geometry const &geom, Array< std::pair< Boundary, Boundary >, 3 > const &bc, Info const &info=Info{})
	Construct a Poisson solver with explicit boundary types.
	Poisson (Geometry const &geom, Info const &info=Info{})
	Construct a purely periodic Poisson solver.
void	solve (MF &a_soln, MF const &a_rhs)
	Solve del dot grad soln = rhs.

Detailed Description

template<typename MF = MultiFab>
class amrex::FFT::Poisson< MF >

Poisson solver for periodic, Dirichlet & Neumann boundaries using FFT.

Constructor & Destructor Documentation

Poisson() [1/2]

template<typename MF = MultiFab>

amrex::FFT::Poisson< MF >::Poisson ( Geometry const & geom, Array< std::pair< Boundary, Boundary >, 3 > const & bc, Info const & info = Info{} )

inline

Construct a Poisson solver with explicit boundary types.

Parameters

geom	Geometry describing the domain and metric information.
bc	Pair of boundary descriptors (low/high) per coordinate direction.
info	Only the communication strategy is used.

Poisson() [2/2]

template<typename MF = MultiFab>

amrex::FFT::Poisson< MF >::Poisson ( Geometry const & geom, Info const & info = Info{} )

inlineexplicit

Construct a purely periodic Poisson solver.

Parameters

geom	Periodic geometry (all directions must be periodic).
info	Only the communication strategy is used.

Member Function Documentation

solve()

template<typename MF>

void amrex::FFT::Poisson< MF >::solve	(	MF &	a_soln,
		MF const &	a_rhs )

Solve del dot grad soln = rhs.

If soln has ghost cells, one layer of ghost cells will be filled except for the corners of the physical domain where they are not used in the cross stencil of the operator. The two MFs could be the same MF.

Parameters

a_soln	Solution MultiFab (updated in place).
a_rhs	Right-hand side MultiFab.

---

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

• /home/runner/work/amrex/amrex/Src/FFT/AMReX_FFT_Poisson.H