Numerical Investigation of Reversed Gas-Feed Configurations for Hall Thrusters
| Autor: | Thierry Magin, Aldo Frezzotti, Stefano Boccelli |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
FOS: Computer and information sciences
Propellant Materials science Mechanical Engineering Computation Monte Carlo method Fluid Dynamics (physics.flu-dyn) FOS: Physical sciences Aerospace Engineering Physics - Fluid Dynamics Mechanics Residence time (fluid dynamics) Physics - Plasma Physics Hall effect thruster Anode Plasma Physics (physics.plasm-ph) Computational Engineering Finance and Science (cs.CE) Fuel Technology Space and Planetary Science Ionization Computer Science - Computational Engineering Finance and Science Communication channel |
| Zdroj: | Journal of Propulsion and Power. 37:919-927 |
| ISSN: | 1533-3876 |
| Popis: | A reversed gas feed configuration for Hall thrusters is proposed and studied numerically. As an alternative to standard direct injection, we investigate the effect of injecting the propellant near the channel exit and directing it backwards, towards the anode. The resulting neutral density and average velocity fields are studied with the Direct Simulation Monte Carlo method for both cold and warm anode conditions. The residence time of neutral particles inside the channel and in the ionization region is computed using a test-particle Monte Carlo method. The computations indicate that the reversed injection allows for increasing the mass utilization efficiency of a standard feed configuration from 2-5% to a maximum of 20-30% depending on the initial efficiency. |
| Databáze: | OpenAIRE |
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