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Title: A zero-equation turbulence model for two-dimensional hybrid Hall thruster simulations

We present a model for electron transport across the magnetic field of a Hall thruster and integrate this model into 2-D hybrid particle-in-cell simulations. The model is based on a simple scaling of the turbulent electron energy dissipation rate and the assumption that this dissipation results in Ohmic heating. Implementing the model into 2-D hybrid simulations is straightforward and leverages the existing framework for solving the electron fluid equations. The model recovers the axial variation in the mobility seen in experiments, predicting the generation of a transport barrier which anchors the region of plasma acceleration. The predicted xenon neutral and ion velocities are found to be in good agreement with laser-induced fluorescence measurements.
Authors:
; ;  [1] ;  [2]
  1. Stanford Plasma Physics Laboratory, 452 Escondido Mall, Bldg. 520-118, Stanford, California 94305 (United States)
  2. Mathematics and Physics Department, Eckerd College, 4200 54th Avenue South, St. Petersburg, Florida 33711 (United States)
Publication Date:
OSTI Identifier:
22489897
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPUTERIZED SIMULATION; ELECTRON TRANSFER; ENERGY LOSSES; FLOW MODELS; FLUORESCENCE; JOULE HEATING; LASER RADIATION; MAGNETIC FIELDS; PLASMA ACCELERATION; SCALING; TURBULENCE; TWO-DIMENSIONAL CALCULATIONS; VELOCITY; XENON; XENON IONS