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/* Copyright 2019 Andrew Myers, Axel Huebl, David Grote
* Luca Fedeli, Maxence Thevenet, Revathi Jambunathan
* Weiqun Zhang, levinem, Yinjian Zhao
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#include "Particles/Filter/FilterFunctors.H"
#include "Particles/MultiParticleContainer.H"
#include "WarpX.H"
using namespace amrex;
void
RigidInjectedParticleContainer::ReadHeader (std::istream& is)
{
is >> charge >> mass;
WarpX::GotoNextLine(is);
int nlevs;
is >> nlevs;
WarpX::GotoNextLine(is);
AMREX_ASSERT(zinject_plane_levels.size() == 0);
AMREX_ASSERT(done_injecting.size() == 0);
for (int i = 0; i < nlevs; ++i)
{
int zinject_plane_tmp;
is >> zinject_plane_tmp;
zinject_plane_levels.push_back(zinject_plane_tmp);
WarpX::GotoNextLine(is);
}
for (int i = 0; i < nlevs; ++i)
{
int done_injecting_tmp;
is >> done_injecting_tmp;
done_injecting.push_back(done_injecting_tmp);
WarpX::GotoNextLine(is);
}
}
void
RigidInjectedParticleContainer::WriteHeader (std::ostream& os) const
{
// no need to write species_id
os << charge << " " << mass << "\n";
int nlevs = zinject_plane_levels.size();
os << nlevs << "\n";
for (int i = 0; i < nlevs; ++i)
{
os << zinject_plane_levels[i] << "\n";
}
for (int i = 0; i < nlevs; ++i)
{
os << done_injecting[i] << "\n";
}
}
void
WarpXParticleContainer::ReadHeader (std::istream& is)
{
is >> charge >> mass;
WarpX::GotoNextLine(is);
}
void
WarpXParticleContainer::WriteHeader (std::ostream& os) const
{
// no need to write species_id
os << charge << " " << mass << "\n";
}
void
MultiParticleContainer::Checkpoint (const std::string& dir) const
{
for (unsigned i = 0, n = species_names.size(); i < n; ++i) {
allcontainers[i]->Checkpoint(dir, species_names[i]);
}
}
void
MultiParticleContainer::Restart (const std::string& dir)
{
for (unsigned i = 0, n = species_names.size(); i < n; ++i) {
allcontainers[i]->Restart(dir, species_names[i]);
}
}
void
MultiParticleContainer::ReadHeader (std::istream& is)
{
for (auto& pc : allcontainers) {
pc->ReadHeader(is);
}
}
void
MultiParticleContainer::WriteHeader (std::ostream& os) const
{
for (const auto& pc : allcontainers) {
pc->WriteHeader(os);
}
}
// Particle momentum is defined as gamma*velocity, which is neither
// SI mass*gamma*velocity nor normalized gamma*velocity/c.
// This converts momentum to SI units (or vice-versa) to write SI data
// to file.
// Photons are a special case, since particle momentum is defined as
// (photon_energy/(m_e * c) ) * u, where u is the photon direction (a
// unit vector).
void
PhysicalParticleContainer::ConvertUnits(ConvertDirection convert_direction)
{
WARPX_PROFILE("PhysicalParticleContainer::ConvertUnits()");
// Compute conversion factor
auto factor = 1_rt;
// Account for the special case of photons
const auto t_mass =
AmIA<PhysicalSpecies::photon>() ? PhysConst::m_e : mass;
if (convert_direction == ConvertDirection::WarpX_to_SI){
factor = t_mass;
} else if (convert_direction == ConvertDirection::SI_to_WarpX){
factor = 1._rt/t_mass;
}
const int nLevels = finestLevel();
for (int lev=0; lev<=nLevels; lev++){
#ifdef _OPENMP
#pragma omp parallel if (Gpu::notInLaunchRegion())
#endif
for (WarpXParIter pti(*this, lev); pti.isValid(); ++pti)
{
// - momenta are stored as a struct of array, in `attribs`
auto& attribs = pti.GetAttribs();
ParticleReal* AMREX_RESTRICT ux = attribs[PIdx::ux].dataPtr();
ParticleReal* AMREX_RESTRICT uy = attribs[PIdx::uy].dataPtr();
ParticleReal* AMREX_RESTRICT uz = attribs[PIdx::uz].dataPtr();
// Loop over the particles and convert momentum
const long np = pti.numParticles();
ParallelFor( np,
[=] AMREX_GPU_DEVICE (long i) {
ux[i] *= factor;
uy[i] *= factor;
uz[i] *= factor;
}
);
}
}
}
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