Uniform Plasma
This example evolves a uniformly distributed, hot plasma over time.
Run
For MPI-parallel runs, prefix these lines with mpiexec -n 4 ... or srun -n 4 ..., depending on the system.
This example can be run as WarpX executable using an input file: warpx.3d inputs_base_3d
Listing 75 You can copy this file fromExamples/Physics_applications/uniform_plasma/inputs_base_3d.################################# ####### GENERAL PARAMETERS ###### ################################# max_step = 10 amr.n_cell = 64 32 32 amr.max_grid_size = 32 amr.blocking_factor = 16 amr.max_level = 0 geometry.dims = 3 geometry.prob_lo = -20.e-6 -20.e-6 -20.e-6 # physical domain geometry.prob_hi = 20.e-6 20.e-6 20.e-6 ################################# ####### Boundary condition ###### ################################# boundary.field_lo = periodic periodic periodic boundary.field_hi = periodic periodic periodic ################################# ############ NUMERICS ########### ################################# warpx.serialize_initial_conditions = 1 warpx.verbose = 1 warpx.cfl = 1.0 # Order of particle shape factors algo.particle_shape = 1 ################################# ############ PLASMA ############# ################################# particles.species_names = electrons electrons.species_type = electron electrons.injection_style = "NUniformPerCell" electrons.num_particles_per_cell_each_dim = 1 1 2 electrons.profile = constant electrons.density = 1.e25 # number of electrons per m^3 electrons.momentum_distribution_type = "gaussian" electrons.ux_th = 0.01 # uth the std of the (unitless) momentum electrons.uy_th = 0.01 # uth the std of the (unitless) momentum electrons.uz_th = 0.01 # uth the std of the (unitless) momentum # Diagnostics diagnostics.diags_names = diag1 chk diag1.intervals = 4 diag1.diag_type = Full diag1.electrons.variables = x y z ux uy uz w diag1.fields_to_plot = Bx By Bz Ex Ey Ez jx jy jz rho chk.intervals = 6 chk.diag_type = Full chk.format = checkpoint
This example can be run as WarpX executable using an input file: warpx.2d inputs_test_2d_uniform_plasma
Listing 76 You can copy this file fromExamples/Physics_applications/uniform_plasma/inputs_test_2d_uniform_plasma.################################# ####### GENERAL PARAMETERS ###### ################################# max_step = 10 amr.n_cell = 128 128 amr.max_grid_size = 64 amr.blocking_factor = 32 amr.max_level = 0 geometry.dims = 2 geometry.prob_lo = -20.e-6 -20.e-6 # physical domain geometry.prob_hi = 20.e-6 20.e-6 ################################# ####### Boundary condition ###### ################################# boundary.field_lo = periodic periodic boundary.field_hi = periodic periodic ################################# ############ NUMERICS ########### ################################# warpx.serialize_initial_conditions = 1 warpx.verbose = 1 warpx.cfl = 1.0 warpx.use_filter = 0 # Order of particle shape factors algo.particle_shape = 1 ################################# ############ PLASMA ############# ################################# particles.species_names = electrons electrons.charge = -q_e electrons.mass = m_e electrons.injection_style = "NUniformPerCell" electrons.num_particles_per_cell_each_dim = 2 2 electrons.profile = constant electrons.density = 1.e25 # number of electrons per m^3 electrons.momentum_distribution_type = "gaussian" electrons.ux_th = 0.01 # uth the std of the (unitless) momentum electrons.uy_th = 0.01 # uth the std of the (unitless) momentum electrons.uz_th = 0.01 # uth the std of the (unitless) momentum # Diagnostics diagnostics.diags_names = diag1 diag1.intervals = 10 diag1.diag_type = Full