diff options
Diffstat (limited to 'Source/Parallelization/GuardCellManager.cpp')
| -rw-r--r-- | Source/Parallelization/GuardCellManager.cpp | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/Source/Parallelization/GuardCellManager.cpp b/Source/Parallelization/GuardCellManager.cpp index 6e3b46645..fcc3abcba 100644 --- a/Source/Parallelization/GuardCellManager.cpp +++ b/Source/Parallelization/GuardCellManager.cpp @@ -46,7 +46,9 @@ guardCellManager::Init ( const amrex::Vector<amrex::Real> v_galilean, const amrex::Vector<amrex::Real> v_comoving, const bool safe_guard_cells, - const int do_electrostatic) + const int do_electrostatic, + const int do_multi_J, + const bool fft_do_time_averaging) { // When using subcycling, the particles on the fine level perform two pushes // before being redistributed ; therefore, we need one extra guard cell @@ -122,8 +124,22 @@ guardCellManager::Init ( { for (int i = 0; i < AMREX_SPACEDIM; i++) { - ng_alloc_Rho[i] += static_cast<int>(std::ceil(PhysConst::c * dt / dx[i])); - ng_alloc_J[i] += static_cast<int>(std::ceil(PhysConst::c * dt / dx[i] * 0.5_rt)); + amrex::Real dt_Rho = dt; + amrex::Real dt_J = 0.5_rt*dt; + if (do_multi_J) { + // With multi_J + time averaging, particles can move during 2*dt per PIC cycle. + if (fft_do_time_averaging){ + dt_Rho = 2._rt*dt; + dt_J = 2._rt*dt; + } + // With multi_J but without time averaging, particles can move during dt per PIC + // cycle for the current deposition as well. + else { + dt_J = dt; + } + } + ng_alloc_Rho[i] += static_cast<int>(std::ceil(PhysConst::c * dt_Rho / dx[i])); + ng_alloc_J[i] += static_cast<int>(std::ceil(PhysConst::c * dt_J / dx[i])); } } |