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

Poisson solve for Open BC using FFT. More...

#include <AMReX_FFT_Poisson.H>

Public Member Functions
template<typename FA = MF> requires (IsFabArray_v<FA>)
	PoissonOpenBC (Geometry const &geom, IndexType ixtype=IndexType::TheCellType(), IntVect const &ngrow=IntVect(0), Info const &info=Info{})
	Build an open-boundary FFT solver over the grown domain.
void	solve (MF &soln, MF const &rhs)
	Solve the open-boundary Poisson problem.
void	define_doit ()
	Initialize the discretized Green's function cache (public for CUDA kernels).
IntVect const &	PaddedLength () const
	Access the one-sided padded length used by the internal OpenBC solver.

Detailed Description

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

Poisson solve for Open BC using FFT.

Constructor & Destructor Documentation

PoissonOpenBC()

template<typename MF >
requires (IsFabArray_v<FA>)

template<typename FA >
requires (IsFabArray_v<FA>)

amrex::FFT::PoissonOpenBC< MF >::PoissonOpenBC ( Geometry const &  geom, IndexType  ixtype = IndexType::TheCellType(), IntVect const &  ngrow = IntVect(0), Info const &  info = Info{}  )

explicit

Build an open-boundary FFT solver over the grown domain.

Parameters

geom	Geometry describing the problem domain.
ixtype	Index type (cell vs. node) for the working arrays.
ngrow	Number of grow cells applied prior to solving.
info	OpenBC solver options.

Member Function Documentation

define_doit()

template<typename MF >

void amrex::FFT::PoissonOpenBC< MF >::define_doit

(

)

Initialize the discretized Green's function cache (public for CUDA kernels).

PaddedLength()

template<typename MF = MultiFab>

IntVect const & amrex::FFT::PoissonOpenBC< MF >::PaddedLength ( ) const

inline

Access the one-sided padded length used by the internal OpenBC solver.

Returns

Padded length before the open-boundary convolution domain is doubled.

solve()

template<typename MF >

void amrex::FFT::PoissonOpenBC< MF >::solve	(	MF &	soln,
		MF const &	rhs
	)

Solve the open-boundary Poisson problem.

Parameters

soln	Solution MultiFab (cell- or node-centered to match constructor).
rhs	Right-hand-side MultiFab.

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

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