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A two-dimensional simulation is conducted to investigate the effect ofcross-field electron transport enhancement in the Hall thruster dischargecaused by the nonuniform propellant supply in azimuth. The Hall thrusteroperation with azimuthally nonuniform propellant supply is expected to be agood test case to understand the influences of azimuthal plasma propertydistributions on the axial electron transport. A particle-fluid hybrid model isdeveloped with a two-dimensional magnetized electron fluid model incorporatedwith an empirical anomalous electron mobility model. The calculation resultsindicate that the azimuthal electric field is generated in the cases ofnonuniform propellant supply. The azimuthal phase shift is observed between theion number density and space potential at the downstream plume region. Owing tothis azimuthal out-of-phase and the azimuthal electric field, the cross-fieldelectron transport in the axial direction can be enhanced.

Two-dimensional Modeling of the Hall Thruster Discharge with Non-uniform Propellant Supply in Azimuth