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-rw-r--r--Source/Utils/WarpXMovingWindow.cpp179
1 files changed, 123 insertions, 56 deletions
diff --git a/Source/Utils/WarpXMovingWindow.cpp b/Source/Utils/WarpXMovingWindow.cpp
index 7e7985b98..cef4764b1 100644
--- a/Source/Utils/WarpXMovingWindow.cpp
+++ b/Source/Utils/WarpXMovingWindow.cpp
@@ -56,25 +56,81 @@ void
WarpX::UpdatePlasmaInjectionPosition (amrex::Real a_dt)
{
const int dir = moving_window_dir;
- // Continuously inject plasma in new cells (by default only on level 0)
- if (WarpX::warpx_do_continuous_injection and (WarpX::gamma_boost > 1)){
- // In boosted-frame simulations, the plasma has moved since the last
- // call to this function, and injection position needs to be updated
- current_injection_position -= WarpX::beta_boost *
+
+ // Loop over species
+ const int n_species = mypc->nSpecies();
+ for (int i=0; i<n_species; i++)
+ {
+ WarpXParticleContainer& pc = mypc->GetParticleContainer(i);
+
+ // Continuously inject plasma in new cells (by default only on level 0)
+ if (pc.doContinuousInjection())
+ {
+ PlasmaInjector* plasma_injector = pc.GetPlasmaInjector();
+ if (plasma_injector == nullptr) continue;
+
+ // Get bulk momentum and velocity of plasma
+ amrex::XDim3 u_bulk = amrex::XDim3{0._rt, 0._rt, 0._rt};
+ amrex::Real v_bulk = 0._rt;
+ if (dir == 0)
+ {
+ // dir=0 is z in 1D, x in 2D, x in 3D
+#if defined(WARPX_DIM_1D_Z)
+ u_bulk = plasma_injector->getInjectorMomentumHost()->getBulkMomentum(0._rt, 0._rt, pc.m_current_injection_position);
+ v_bulk = PhysConst::c * u_bulk.z / std::sqrt(1._rt + u_bulk.z*u_bulk.z);
+#else // 2D, 3D
+ u_bulk = plasma_injector->getInjectorMomentumHost()->getBulkMomentum(pc.m_current_injection_position, 0._rt, 0._rt);
+ v_bulk = PhysConst::c * u_bulk.x / std::sqrt(1._rt + u_bulk.x*u_bulk.x);
+#endif
+ }
+ else if (dir == 1)
+ {
+ // dir=1 is nothing in 1D, z in 2D, y in 3D
+ // (we do not expect to enter this code block in 1D)
+#if defined(WARPX_DIM_XZ) || defined(WARPX_DIM_RZ)
+ u_bulk = plasma_injector->getInjectorMomentumHost()->getBulkMomentum(0._rt, 0._rt, pc.m_current_injection_position);
+ v_bulk = PhysConst::c * u_bulk.z / std::sqrt(1._rt + u_bulk.z*u_bulk.z);
+#else // 3D
+ u_bulk = plasma_injector->getInjectorMomentumHost()->getBulkMomentum(0._rt, pc.m_current_injection_position, 0._rt);
+ v_bulk = PhysConst::c * u_bulk.y / std::sqrt(1._rt + u_bulk.y*u_bulk.y);
+#endif
+ }
+ else if (dir == 2)
+ {
+ // dir=2 is nothing in 1D, nothing in 2D, z in 3D
+ // (we do not expect to enter this code block in 1D and 2D)
+ u_bulk = plasma_injector->getInjectorMomentumHost()->getBulkMomentum(0._rt, 0._rt, pc.m_current_injection_position);
+ v_bulk = PhysConst::c * u_bulk.z / std::sqrt(1._rt + u_bulk.z*u_bulk.z);
+ }
+
+ // In boosted-frame simulations, the plasma has moved since the last
+ // call to this function, and injection position needs to be updated.
+ // Note that the bulk velocity v, obtained from getBulkMomentum, is
+ // transformed to the boosted frame velocity v' via the formula
+ // v' = (v-c*beta)/(1-v*beta/c)
+ if (WarpX::gamma_boost > 1._rt)
+ {
+ v_bulk = (v_bulk - PhysConst::c*WarpX::beta_boost)
+ / (1._rt - v_bulk*WarpX::beta_boost/PhysConst::c);
#if defined(WARPX_DIM_3D)
- WarpX::boost_direction[dir] * PhysConst::c * a_dt;
+ v_bulk *= WarpX::boost_direction[dir];
#elif defined(WARPX_DIM_XZ) || defined(WARPX_DIM_RZ)
- // In 2D, dir=0 corresponds to x and dir=1 corresponds to z
- // This needs to be converted in order to index `boost_direction`
- // which has 3 components, for both 2D and 3D simulations.
- WarpX::boost_direction[2*dir] * PhysConst::c * a_dt;
+ // In 2D, dir=0 corresponds to x and dir=1 corresponds to z.
+ // This needs to be converted to access boost_direction,
+ // which has always 3 components.
+ v_bulk *= WarpX::boost_direction[2*dir];
#elif defined(WARPX_DIM_1D_Z)
- // In 1D, dir=0 corresponds to z
- // This needs to be converted in order to index `boost_direction`
- // which has 3 components, for 1D, 2D, and 3D simulations.
- WarpX::boost_direction[2] * PhysConst::c * a_dt;
- amrex::ignore_unused(dir);
+ // In 1D, dir=0 corresponds to z.
+ // This needs to be converted to access boost_direction,
+ // which has always 3 components.
+ v_bulk *= WarpX::boost_direction[2];
+ amrex::ignore_unused(dir);
#endif
+ }
+
+ // Update current injection position
+ pc.m_current_injection_position += v_bulk * a_dt;
+ }
}
}
@@ -96,15 +152,13 @@ WarpX::MoveWindow (const int step, bool move_j)
moving_window_x += (moving_window_v - WarpX::beta_boost * PhysConst::c)/(1 - moving_window_v * WarpX::beta_boost / PhysConst::c) * dt[0];
const int dir = moving_window_dir;
- // Update warpx.current_injection_position
+ // Update warpx.current_injection_position,
// PhysicalParticleContainer uses this injection position
UpdatePlasmaInjectionPosition( dt[0] );
- if (WarpX::warpx_do_continuous_injection){
- // Update injection position for WarpXParticleContainer in mypc.
- // Nothing to do for PhysicalParticleContainers
- // For LaserParticleContainer, need to update the antenna position.
- mypc->UpdateContinuousInjectionPosition( dt[0] );
- }
+ // Update injection position for WarpXParticleContainer in mypc,
+ // nothing to do for PhysicalParticleContainer,
+ // need to update the antenna position for LaserParticleContainer.
+ mypc->UpdateContinuousInjectionPosition( dt[0] );
// compute the number of cells to shift on the base level
amrex::Real new_lo[AMREX_SPACEDIM];
@@ -312,41 +366,54 @@ WarpX::MoveWindow (const int step, bool move_j)
}
}
- // Continuously inject plasma in new cells (by default only on level 0)
- if (WarpX::warpx_do_continuous_injection) {
-
- const int lev = 0;
-
- // particleBox encloses the cells where we generate particles
- // (only injects particles in an integer number of cells,
- // for correct particle spacing)
- amrex::RealBox particleBox = geom[lev].ProbDomain();
- amrex::Real new_injection_position;
- if (moving_window_v >= 0){
- // Forward-moving window
- const amrex::Real dx = geom[lev].CellSize(dir);
- new_injection_position = current_injection_position +
- std::floor( (geom[lev].ProbHi(dir) - current_injection_position)/dx ) * dx;
- } else {
- // Backward-moving window
- const amrex::Real dx = geom[lev].CellSize(dir);
- new_injection_position = current_injection_position -
- std::floor( (current_injection_position - geom[lev].ProbLo(dir))/dx) * dx;
- }
- // Modify the corresponding bounds of the particleBox
- if (moving_window_v >= 0) {
- particleBox.setLo( dir, current_injection_position );
- particleBox.setHi( dir, new_injection_position );
- } else {
- particleBox.setLo( dir, new_injection_position );
- particleBox.setHi( dir, current_injection_position );
- }
+ // Loop over species
+ const int n_species = mypc->nSpecies();
+ for (int i=0; i<n_species; i++)
+ {
+ WarpXParticleContainer& pc = mypc->GetParticleContainer(i);
+
+ // Continuously inject plasma in new cells (by default only on level 0)
+ if (pc.doContinuousInjection())
+ {
+ const int lev = 0;
+
+ // particleBox encloses the cells where we generate particles
+ // (only injects particles in an integer number of cells,
+ // for correct particle spacing)
+ amrex::RealBox particleBox = geom[lev].ProbDomain();
+ amrex::Real new_injection_position = pc.m_current_injection_position;
+ if (moving_window_v > 0._rt)
+ {
+ // Forward-moving window
+ const amrex::Real dx = geom[lev].CellSize(dir);
+ new_injection_position = pc.m_current_injection_position +
+ std::floor( (geom[lev].ProbHi(dir) - pc.m_current_injection_position)/dx ) * dx;
+ }
+ else if (moving_window_v < 0._rt)
+ {
+ // Backward-moving window
+ const amrex::Real dx = geom[lev].CellSize(dir);
+ new_injection_position = pc.m_current_injection_position -
+ std::floor( (pc.m_current_injection_position - geom[lev].ProbLo(dir))/dx) * dx;
+ }
+ // Modify the corresponding bounds of the particleBox
+ if (moving_window_v > 0._rt)
+ {
+ particleBox.setLo( dir, pc.m_current_injection_position );
+ particleBox.setHi( dir, new_injection_position );
+ }
+ else if (moving_window_v < 0._rt)
+ {
+ particleBox.setLo( dir, new_injection_position );
+ particleBox.setHi( dir, pc.m_current_injection_position );
+ }
- if (particleBox.ok() and (current_injection_position != new_injection_position)){
- // Performs continuous injection of all WarpXParticleContainer
- // in mypc.
- mypc->ContinuousInjection(particleBox);
- current_injection_position = new_injection_position;
+ if (particleBox.ok() and (pc.m_current_injection_position != new_injection_position)){
+ // Performs continuous injection of all WarpXParticleContainer
+ // in mypc.
+ pc.ContinuousInjection(particleBox);
+ pc.m_current_injection_position = new_injection_position;
+ }
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-08 16:18:54 +0000