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/* Copyright 2019-2020 David Grote
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#ifndef WARPX_SPECTRAL_FIELD_DATA_RZ_H_
#define WARPX_SPECTRAL_FIELD_DATA_RZ_H_
#include "SpectralKSpaceRZ.H"
#include "SpectralFieldData.H"
#include "SpectralHankelTransform/SpectralHankelTransformer.H"
#include <AMReX_MultiFab.H>
/* \brief Class that stores the fields in spectral space, and performs the
* Fourier transforms between real space and spectral space
*/
class SpectralFieldDataRZ
{
public:
// Define the FFTplans type, which holds one fft plan per box
// (plans are only initialized for the boxes that are owned by
// the local MPI rank)
#ifdef AMREX_USE_GPU
using FFTplans = amrex::LayoutData<cufftHandle>;
#else
using FFTplans = amrex::LayoutData<fftw_plan>;
#endif
// Similarly, define the Hankel transformers for each box.
using MultiSpectralHankelTransformer = amrex::LayoutData<SpectralHankelTransformer>;
SpectralFieldDataRZ(const amrex::BoxArray& realspace_ba,
const SpectralKSpaceRZ& k_space,
const amrex::DistributionMapping& dm,
const int n_field_required,
const int n_modes,
const int lev);
SpectralFieldDataRZ() = default; // Default constructor
SpectralFieldDataRZ& operator=(SpectralFieldDataRZ&& field_data) = default;
~SpectralFieldDataRZ();
void ForwardTransform(const amrex::MultiFab& mf,
const int field_index, const int i_comp);
void ForwardTransform(const amrex::MultiFab& mf_r, const int field_index_r,
const amrex::MultiFab& mf_t, const int field_index_t);
void BackwardTransform(amrex::MultiFab& mf,
const int field_index, const int i_comp);
void BackwardTransform(amrex::MultiFab& mf_r, const int field_index_r,
amrex::MultiFab& mf_t, const int field_index_t);
void FABZForwardTransform(amrex::MFIter const & mfi,
amrex::MultiFab const & tempHTransformedSplit,
int field_index, const bool is_nodal_z);
void FABZBackwardTransform(amrex::MFIter const & mfi, const int field_index,
amrex::MultiFab & tempHTransformedSplit,
const bool is_nodal_z);
// Returns an array that holds the kr for all of the modes
HankelTransform::RealVector const & getKrArray(amrex::MFIter const & mfi) const {
return multi_spectral_hankel_transformer[mfi].getKrArray();
}
// `fields` stores fields in spectral space, as multicomponent FabArray
SpectralField fields;
int n_rz_azimuthal_modes;
private:
// tempHTransformed and tmpSpectralField store fields
// right before/after the z Fourier transform
SpectralField tempHTransformed; // contains Complexes
SpectralField tmpSpectralField; // contains Complexes
FFTplans forward_plan, backward_plan;
// Correcting "shift" factors when performing FFT from/to
// a cell-centered grid in real space, instead of a nodal grid
SpectralShiftFactor zshift_FFTfromCell, zshift_FFTtoCell;
MultiSpectralHankelTransformer multi_spectral_hankel_transformer;
};
#endif // WARPX_SPECTRAL_FIELD_DATA_RZ_H_
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