Two-dimensional hybrid model of gradient drift instability and enhanced electron transport in a Hall thruster

An axial–azimuthal two-dimensional Hall thruster discharge model was developed for analyzing gradient drift instability (GDI) and cross field electron transport enhancement induced solely by the GDI. A hybrid particle-fluid used partially ionized plasma, where inertialess fluid in quasineutral plasma assumed. nonoscillatory numerical method proposed potential solver to avoid analyze physics of GDI accurately. simulation is performed a 1 kW-class anode-layer-type thruster, flow with presented. Plasma vortex-like structures observed acceleration plume regions. The generated enhances axial direction around channel exit region. Grid convergence confirmed regarding effect enhancement, which indicates that based on instability. Furthermore, comparison between results linear perturbation analyses demonstrates simulated reflects theory Thus, it concluded useful GDI, can enhance thrusters.