Numerical studies 12 Computer simulation 6 Electric fields 6 Hydrodynamics 6 Mathematical models 6 Numerical simulation 6 Astronomical tides 4 Average field 4 Biasing voltages 4 Boundary conditions 4 Breakdown threshold 4 Carrier concentration 4 Cold ions 4 Colonia 4 Constant discharge 4 Currents 4 Cutting torch 4 Drift diffusion 4 Electric potential 4 Electron densities 4 Electron density measurement 4 Electron temperature 4 Fluid dynamics 4 Gas breakdown 4 Harmonic constants 4 Hydrodynamic model 4 Hydrodynamic modeling 4 Ion collisions 4 Ion density 4 Ion velocity 4