/* Copyright 2019 * * This file is part of WarpX. * * License: BSD-3-Clause-LBNL */ #ifndef WARPX_PSATD_ALGORITHM_H_ #define WARPX_PSATD_ALGORITHM_H_ #include "FieldSolver/SpectralSolver/SpectralFieldData.H" #include "FieldSolver/SpectralSolver/SpectralKSpace.H" #include "SpectralBaseAlgorithm.H" #include #include #include #include #include #include #if WARPX_USE_PSATD /* \brief Class that updates the field in spectral space * and stores the coefficients of the corresponding update equation. */ class PsatdAlgorithm : public SpectralBaseAlgorithm { public: /** * \brief Constructor of the class PsatdAlgorithm * * \param[in] spectral_kspace spectral space * \param[in] dm distribution mapping * \param[in] spectral_index object containing indices to access data in spectral space * \param[in] norder_x order of the spectral solver along x * \param[in] norder_y order of the spectral solver along y * \param[in] norder_z order of the spectral solver along z * \param[in] nodal whether the E and B fields are defined on a fully nodal grid or a Yee grid * \param[in] v_galilean Galilean velocity (three-dimensional array) * \param[in] dt time step of the simulation * \param[in] update_with_rho whether the update equation for E uses rho or not * \param[in] time_averaging whether to use time averaging for large time steps * \param[in] J_linear_in_time whether to use two currents computed at the beginning and the end * of the time interval (instead of using one current computed at half time) */ PsatdAlgorithm ( const SpectralKSpace& spectral_kspace, const amrex::DistributionMapping& dm, const SpectralFieldIndex& spectral_index, const int norder_x, const int norder_y, const int norder_z, const bool nodal, const amrex::IntVect& fill_guards, const amrex::Array& v_galilean, const amrex::Real dt, const bool update_with_rho, const bool time_averaging, const bool J_linear_in_time, const bool dive_cleaning, const bool divb_cleaning); /** * \brief Updates the E and B fields in spectral space, according to the relevant PSATD equations * * \param[in,out] f all the fields in spectral space */ virtual void pushSpectralFields (SpectralFieldData& f) const override final; /** * \brief Initializes the coefficients used in \c pushSpectralFields to update the E and B fields * * \param[in] spectral_kspace spectral space * \param[in] dm distribution mapping * \param[in] dt time step of the simulation */ void InitializeSpectralCoefficients ( const SpectralKSpace& spectral_kspace, const amrex::DistributionMapping& dm, const amrex::Real dt); /** * \brief Initialize additional coefficients used in \c pushSpectralFields to update E,B, * required only when using time averaging with the assumption that J is linear in time * * \param[in] spectral_kspace spectral space * \param[in] dm distribution mapping * \param[in] dt time step of the simulation */ void InitializeSpectralCoefficientsAvgLin ( const SpectralKSpace& spectral_kspace, const amrex::DistributionMapping& dm, const amrex::Real dt); /** * \brief Initializes additional coefficients used in \c pushSpectralFields to update the E and B fields, * required only when using time averaging with large time steps * * \param[in] spectral_kspace spectral space * \param[in] dm distribution mapping * \param[in] dt time step of the simulation */ void InitializeSpectralCoefficientsAveraging ( const SpectralKSpace& spectral_kspace, const amrex::DistributionMapping& dm, const amrex::Real dt); /** * \brief Virtual function for current correction in Fourier space * ( Vay et al, 2013). * This function overrides the virtual function \c CurrentCorrection in the * base class \c SpectralBaseAlgorithm and cannot be overridden by further * derived classes. * * \param[in,out] field_data All fields in Fourier space * \param[in,out] current Array of unique pointers to \c MultiFab storing * the three components of the current density * \param[in] rho Unique pointer to \c MultiFab storing the charge density */ virtual void CurrentCorrection ( const int lev, SpectralFieldData& field_data, std::array,3>& current, const std::unique_ptr& rho) override final; /** * \brief Virtual function for Vay current deposition in Fourier space * ( Vay et al, 2013). * This function overrides the virtual function \c VayDeposition in the * base class \c SpectralBaseAlgorithm and cannot be overridden by further * derived classes. * * \param[in,out] field_data All fields in Fourier space * \param[in,out] current Array of unique pointers to \c MultiFab storing * the three components of the current density */ virtual void VayDeposition ( const int lev, SpectralFieldData& field_data, std::array,3>& current) override final; private: // These real and complex coefficients are always allocated SpectralRealCoefficients C_coef, S_ck_coef; SpectralComplexCoefficients T2_coef, X1_coef, X2_coef, X3_coef, X4_coef; SpectralComplexCoefficients X5_coef, X6_coef; // These real and complex coefficients are allocated only with averaged Galilean PSATD SpectralComplexCoefficients Psi1_coef, Psi2_coef, Y1_coef, Y2_coef, Y3_coef, Y4_coef; SpectralFieldIndex m_spectral_index; // Centered modified finite-order k vectors KVectorComponent modified_kx_vec_centered; #if (AMREX_SPACEDIM==3) KVectorComponent modified_ky_vec_centered; #endif KVectorComponent modified_kz_vec_centered; // Other member variables amrex::Array m_v_galilean; amrex::Real m_dt; bool m_update_with_rho; bool m_time_averaging; bool m_J_linear_in_time; bool m_dive_cleaning; bool m_divb_cleaning; bool m_is_galilean; }; #endif // WARPX_USE_PSATD #endif // WARPX_PSATD_ALGORITHM_H_ lient-directives'>feat/dynamic-client-directives Unnamed repository; edit this file 'description' to name the repository.
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