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/* Copyright 2019 David Grote, Luca Fedeli, Remi Lehe
* Yinjian Zhao
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#ifndef UTILS_WARPXALGORITHMSELECTION_H_
#define UTILS_WARPXALGORITHMSELECTION_H_
#include <AMReX_BaseFwd.H>
#include <string>
/**
* \brief struct to determine the computational medium, i.e., vacuum or material/macroscopic
default is vacuum.
*/
struct MediumForEM {
enum {
Vacuum = 0,
Macroscopic = 1
};
};
/**
* \brief struct to select algorithm for macroscopic Maxwell solver
LaxWendroff (semi-implicit) represents sigma*E = sigma*0.5*(E^(n) + E^(n+1))
Backward Euler (fully-implicit) represents sigma*E = sigma*E^(n+1)
default is Backward Euler as it is more robust.
*/
struct MacroscopicSolverAlgo {
enum {
BackwardEuler = 0,
LaxWendroff = 1
};
};
struct ElectromagneticSolverAlgo {
enum {
None = 0,
Yee = 1,
CKC = 2,
PSATD = 3,
ECT = 4
};
};
struct ElectrostaticSolverAlgo {
enum {
None = 0,
Relativistic = 1,
LabFrameElectroMagnetostatic = 2,
LabFrame = 3 // Non relativistic
};
};
struct ParticlePusherAlgo {
enum {
Boris = 0,
Vay = 1,
HigueraCary = 2
};
};
struct CurrentDepositionAlgo {
enum {
Esirkepov = 0,
Direct = 1,
Vay = 2
};
};
struct ChargeDepositionAlgo {
// Only the Standard algorithm is implemented
enum {
Standard = 0
};
};
struct GatheringAlgo {
enum {
EnergyConserving = 0,
MomentumConserving
};
};
struct PSATDSolutionType {
enum {
FirstOrder = 0,
SecondOrder = 1
};
};
struct JInTime {
enum {
Constant = 0,
Linear = 1
};
};
struct RhoInTime {
enum {
Constant = 0,
Linear = 1
};
};
/** Strategy to compute weights for use in load balance.
*/
struct LoadBalanceCostsUpdateAlgo {
enum {
Timers = 0, //!< load balance according to in-code timer-based weights (i.e., with `costs`)
Heuristic = 1, /**< load balance according to weights computed from number of cells
and number of particles per box (i.e., with `costs_heuristic`)*/
GpuClock = 2
};
};
/** Field boundary conditions at the domain boundary
*/
struct FieldBoundaryType {
enum {
PML = 0,
Periodic = 1,
PEC = 2, //!< perfect electric conductor (PEC) with E_tangential=0
PMC = 3, //!< perfect magnetic conductor (PMC) with B_tangential=0
Damped = 4, // Fields in the guard cells are damped for PSATD
//in the moving window direction
Absorbing_SilverMueller = 5, // Silver-Mueller boundary condition
Neumann = 6, // For electrostatic, the normal E is set to zero
None = 7 // The fields values at the boundary are not updated. This is
// useful for RZ simulations, at r=0.
};
};
/** Particle boundary conditions at the domain boundary
*/
enum struct ParticleBoundaryType {
Absorbing = 0, //!< particles crossing domain boundary are removed
Open = 1, //!< particles cross domain boundary leave with damped j
Reflecting = 2, //!< particles are reflected
Periodic = 3
};
/** MPI reductions
*/
struct ReductionType {
enum {
Maximum = 0,
Minimum = 1,
Sum = 2
};
};
int
GetAlgorithmInteger( amrex::ParmParse& pp, const char* pp_search_key );
/** Select BC Type for fields, if field=true
* else select BCType for particles.
*/
int
GetFieldBCTypeInteger( std::string BCType );
/** Select BC Type for particles.
*/
ParticleBoundaryType
GetParticleBCTypeInteger( std::string BCType );
#endif // UTILS_WARPXALGORITHMSELECTION_H_
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