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/* Copyright 2020 Remi Lehe
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#include "WarpXAlgorithmSelection.H"
#ifdef WARPX_DIM_RZ
# include "FiniteDifferenceAlgorithms/CylindricalYeeAlgorithm.H"
#else
# include "FiniteDifferenceAlgorithms/CartesianYeeAlgorithm.H"
# include "FiniteDifferenceAlgorithms/CartesianCKCAlgorithm.H"
# include "FiniteDifferenceAlgorithms/CartesianNodalAlgorithm.H"
#endif
#include "FiniteDifferenceSolver.H"
#include "WarpX.H"
/* \brief Initialize the finite-difference Maxwell solver (for a given refinement level)
*
* This function initializes the stencil coefficients for the chosen finite-difference algorithm
*
* \param fdtd_algo Identifies the chosen algorithm, as defined in WarpXAlgorithmSelection.H
* \param cell_size Cell size along each dimension, for the chosen refinement level
* \param do_nodal Whether the solver is applied to a nodal or staggered grid
*/
FiniteDifferenceSolver::FiniteDifferenceSolver (
int const fdtd_algo,
std::array<amrex::Real,3> cell_size,
bool do_nodal ) {
// Register the type of finite-difference algorithm
m_fdtd_algo = fdtd_algo;
m_do_nodal = do_nodal;
// Calculate coefficients of finite-difference stencil
#ifdef WARPX_DIM_RZ
m_dr = cell_size[0];
m_nmodes = WarpX::GetInstance().n_rz_azimuthal_modes;
m_rmin = WarpX::GetInstance().Geom(0).ProbLo(0);
if (fdtd_algo == MaxwellSolverAlgo::Yee) {
CylindricalYeeAlgorithm::InitializeStencilCoefficients( cell_size,
stencil_coefs_r, stencil_coefs_z );
#else
if (do_nodal) {
CartesianNodalAlgorithm::InitializeStencilCoefficients( cell_size,
stencil_coefs_x, stencil_coefs_y, stencil_coefs_z );
} else if (fdtd_algo == MaxwellSolverAlgo::Yee) {
CartesianYeeAlgorithm::InitializeStencilCoefficients( cell_size,
stencil_coefs_x, stencil_coefs_y, stencil_coefs_z );
} else if (fdtd_algo == MaxwellSolverAlgo::CKC) {
CartesianCKCAlgorithm::InitializeStencilCoefficients( cell_size,
stencil_coefs_x, stencil_coefs_y, stencil_coefs_z );
#endif
} else {
amrex::Abort("Unknown algorithm");
}
};
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