1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
#ifndef WARPX_FINITE_DIFFERENCE_SOLVER_H_
#define WARPX_FINITE_DIFFERENCE_SOLVER_H_
#include <AMReX_MultiFab.H>
#include <WarpXAlgorithmSelection.H>
#include<FiniteDifferenceAlgorithms/YeeAlgorithm.H>
/**
* \brief Top-level class for the electromagnetic finite-difference solver
*
* TODO
*/
class FiniteDifferenceSolver
{
public:
using VectorField = std::array< std::unique_ptr<amrex::MultiFab>, 3 >;
// Constructor
FiniteDifferenceSolver ( int fdtd_algo,
std::array<amrex::Real,3> cell_size ) {
// Register the type of finite-difference algorithm
m_fdtd_algo = fdtd_algo;
// Calculate coefficients of finite-difference stencil
if (fdtd_algo == MaxwellSolverAlgo::Yee){
YeeAlgorithm::InitializeStencilCoefficients( cell_size,
stencil_coefs_x, stencil_coefs_y, stencil_coefs_z );
// } else if (fdtd_algo == MaxwellSolverAlgo::CKC) {
// CKCAlgorithm::InitializeStencilCoefficients( cell_size,
// stencil_coefs_x, stencil_coefs_y, stencil_coefs_z );
} else {
amrex::Abort("Unknown algorithm");
}
};
void EvolveB ( VectorField& Bfield,
VectorField& Efield,
amrex::Real dt );
private:
int m_fdtd_algo;
amrex::Gpu::ManagedVector<amrex::Real> stencil_coefs_x;
amrex::Gpu::ManagedVector<amrex::Real> stencil_coefs_y;
amrex::Gpu::ManagedVector<amrex::Real> stencil_coefs_z;
template< typename fdtd_algo >
void EvolveBwithAlgo ( VectorField& Bfield,
VectorField& Efield,
amrex::Real dt );
};
#endif // WARPX_FINITE_DIFFERENCE_SOLVER_H_
|
