An Axial- Azimuthal Hybrid Simulation of Coaxial Hall Thrusters

نویسندگان

  • Eduardo Fernandez
  • Aaron Knoll
  • Mark A. Cappelli
چکیده

We report on progress towards the development of a Hall thruster simulation in the axial-azimuthal (z θ) computational space. Unlike most computational studies of closeddrift Hall accelerators which have been in one dimension (1D) along the axial direction or in two dimensions (2D) in the axial and radial dimensions, and which require some specification of the axial transport mechanism, this z θ numerical simulation developed here self-consistently evolves the azimuthal electron drift velocity. The simulation is, in principal, capable of capturing correlated azimuthal disturbances in plasma properties which may give rise to cross-field transport, and makes no use of ad-hoc transport models. Preliminary analysis of the results indicates that azimuthal plasma instabilities may contribute to the axial electron transport process.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Two-Dimensional (z-θ) Fluid/PIC Simulation of Coaxial Hall Thrusters

This paper describes a 2-dimensional simulation of a coaxial Hall thruster that was developed in the axial-azimuthal (z θ) computational space. Most computational studies of closed-drift Hall accelerators have been in one dimension (1D) along the axial direction or in two dimensions (2D) in the axial and radial dimensions. These 1D and 2D models have had reasonable success in describing the ove...

متن کامل

Multiscale Modeling of a CAMILA Hall Thruster Discharge

Copyright c ©2017 by the Aerospace Plasma Laboratory, Technion. Published by the Electric Rocket Propulsion Society with permission. A multiscale model was developed for the channel of a CoAxial Magnetically Insulated Long Anode (CAMILA) Hall effect thruster. The computational domain was subdivided into a region where a hybrid solver is used and a region where a fully kinetic particle in cell s...

متن کامل

Experimental Investigation of High Frequency Plasma Oscillations Within Hall Thrusters

[Abstract] An experimental setup has been developed to measure high frequency plasma oscillations within the acceleration channel of a laboratory Hall thruster. The plasma oscillations are measured with three Langmuir probes separated by small axial and azimuthal offsets. This configuration permits the oscillations to be correlated with direction and wave number. This work is motivated by the a...

متن کامل

Low Frequency Plasma Wave Dispersion and Propagation in Hall Thrusters

* Presented as Paper IEPC-01-000 at the 27 International Electric Propulsion Conference, Pasadena, CA, 15-19 October, 2001. † Copyright  2001 by Stanford University. Published by the Electric Rocket Propulsion Society with permission. Low-frequency oscillations (<250 kHz) in a coaxial Hall thruster with a boron nitride channel are investigated using three axially and azimuthally separated Lang...

متن کامل

Anomalous Transport induced by Sheath Instability in Hall Effect Thrusters

It is well recognized to ascribe the anomalous cross-field conductivity inside Hall-effect thrusters to fluctuation-induced transport due to gradient-driven instabilities (Rayleigh or electron drift) and to electron-wall interaction (near-wall conductivity). In this contribution we have performed a 2D(r,θ) Particle-in-Cell (PIC) model showing the possibility of another mechanism inducing azimut...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006