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/* Copyright 2019 Aurore Blelly, Axel Huebl, Maxence Thevenet
* Remi Lehe
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#ifndef PML_CURRENT_H_
#define PML_CURRENT_H_
#include "BoundaryConditions/PMLComponent.H"
#include <AMReX.H>
#include <AMReX_FArrayBox.H>
AMREX_GPU_HOST_DEVICE AMREX_INLINE
void push_ex_pml_current (int j, int k, int l,
amrex::Array4<amrex::Real> const& Ex,
amrex::Array4<amrex::Real const> const& jx,
amrex::Real const * const sigjy,
amrex::Real const * const sigjz,
int ylo, int zlo,
amrex::Real mu_c2_dt)
{
#if defined(WARPX_DIM_3D)
amrex::Real alpha_xy, alpha_xz;
if (sigjy[k-ylo]+sigjz[l-zlo] == 0){
alpha_xy = 0.5;
alpha_xz = 0.5;
}
else {
alpha_xy = sigjy[k-ylo]/(sigjy[k-ylo]+sigjz[l-zlo]);
alpha_xz = sigjz[l-zlo]/(sigjy[k-ylo]+sigjz[l-zlo]);
}
Ex(j,k,l,PMLComp::xy) = Ex(j,k,l,PMLComp::xy) - mu_c2_dt * alpha_xy * jx(j,k,l);
Ex(j,k,l,PMLComp::xz) = Ex(j,k,l,PMLComp::xz) - mu_c2_dt * alpha_xz * jx(j,k,l);
#else
Ex(j,k,l,PMLComp::xz) = Ex(j,k,l,PMLComp::xz) - mu_c2_dt * jx(j,k,l);
amrex::ignore_unused(sigjy, sigjz, ylo, zlo);
#endif
}
AMREX_GPU_HOST_DEVICE AMREX_INLINE
void push_ey_pml_current (int j, int k, int l,
amrex::Array4<amrex::Real> const& Ey,
amrex::Array4<amrex::Real const> const& jy,
amrex::Real const * const sigjx,
amrex::Real const * const sigjz,
int xlo, int zlo,
amrex::Real mu_c2_dt)
{
#if defined(WARPX_DIM_3D)
amrex::Real alpha_yx, alpha_yz;
if (sigjx[j-xlo]+sigjz[l-zlo] == 0){
alpha_yx = 0.5;
alpha_yz = 0.5;
}
else {
alpha_yx = sigjx[j-xlo]/(sigjx[j-xlo]+sigjz[l-zlo]);
alpha_yz = sigjz[l-zlo]/(sigjx[j-xlo]+sigjz[l-zlo]);
}
Ey(j,k,l,PMLComp::yz) = Ey(j,k,l,PMLComp::yz) - mu_c2_dt * alpha_yz * jy(j,k,l);
Ey(j,k,l,PMLComp::yx) = Ey(j,k,l,PMLComp::yx) - mu_c2_dt * alpha_yx * jy(j,k,l);
#else
Ey(j,k,l,PMLComp::yz) = Ey(j,k,l,PMLComp::yz) - amrex::Real(0.5) * mu_c2_dt * jy(j,k,l);
Ey(j,k,l,PMLComp::yx) = Ey(j,k,l,PMLComp::yx) - amrex::Real(0.5) * mu_c2_dt * jy(j,k,l);
amrex::ignore_unused(sigjx, sigjz, xlo, zlo);
#endif
}
AMREX_GPU_HOST_DEVICE AMREX_INLINE
void push_ez_pml_current (int j, int k, int l,
amrex::Array4<amrex::Real> const& Ez,
amrex::Array4<amrex::Real const> const& jz,
amrex::Real const * const sigjx,
amrex::Real const * const sigjy,
int xlo, int ylo,
amrex::Real mu_c2_dt)
{
#if defined(WARPX_DIM_3D)
amrex::Real alpha_zx, alpha_zy;
if (sigjx[j-xlo]+sigjy[k-ylo]==0){
alpha_zx = 0.5;
alpha_zy = 0.5;
}
else {
alpha_zx = sigjx[j-xlo]/(sigjx[j-xlo]+sigjy[k-ylo]);
alpha_zy = sigjy[k-ylo]/(sigjx[j-xlo]+sigjy[k-ylo]);
}
Ez(j,k,l,PMLComp::zx) = Ez(j,k,l,PMLComp::zx) - mu_c2_dt * alpha_zx * jz(j,k,l);
Ez(j,k,l,PMLComp::zy) = Ez(j,k,l,PMLComp::zy) - mu_c2_dt * alpha_zy * jz(j,k,l);
#else
Ez(j,k,l,PMLComp::zx) = Ez(j,k,l,PMLComp::zx) - mu_c2_dt * jz(j,k,l);
amrex::ignore_unused(sigjx, sigjy, xlo, ylo);
#endif
}
AMREX_GPU_HOST_DEVICE AMREX_INLINE
void damp_jx_pml (int j, int k, int l,
amrex::Array4<amrex::Real> const& jx,
amrex::Real const* const sigsjx,
amrex::Real const* const sigjy,
amrex::Real const* const sigjz,
int xlo, int ylo, int zlo)
{
#if defined(WARPX_DIM_3D)
jx(j,k,l) = jx(j,k,l) * sigsjx[j-xlo] * sigjy[k-ylo] * sigjz[l-zlo];
#else
jx(j,k,l) = jx(j,k,l) * sigsjx[j-xlo] * sigjz[k-zlo];
amrex::ignore_unused(sigjy, ylo);
#endif
}
AMREX_GPU_HOST_DEVICE AMREX_INLINE
void damp_jy_pml (int j, int k, int l,
amrex::Array4<amrex::Real> const& jy,
amrex::Real const * const sigjx,
amrex::Real const * const sigsjy,
amrex::Real const * const sigjz,
int xlo, int ylo, int zlo)
{
#if defined(WARPX_DIM_3D)
jy(j,k,l) = jy(j,k,l) * sigjx[j-xlo] * sigsjy[k-ylo] * sigjz[l-zlo];
#else
jy(j,k,l) = jy(j,k,l) * sigjx[j-xlo] * sigjz[k-zlo];
amrex::ignore_unused(sigsjy, ylo);
#endif
}
AMREX_GPU_HOST_DEVICE AMREX_INLINE
void damp_jz_pml (int j, int k, int l,
amrex::Array4<amrex::Real> const& jz,
amrex::Real const * const sigjx,
amrex::Real const * const sigjy,
amrex::Real const * const sigsjz,
int xlo, int ylo, int zlo)
{
#if defined(WARPX_DIM_3D)
jz(j,k,l) = jz(j,k,l) * sigjx[j-xlo] * sigjy[k-ylo] * sigsjz[l-zlo];
#else
jz(j,k,l) = jz(j,k,l) * sigjx[j-xlo] * sigsjz[k-zlo];
amrex::ignore_unused(sigjy, ylo);
#endif
}
#endif
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