@article{Faraji:2023:10.1063/5.0136889,
author = {Faraji, F and Reza, M and Knoll, A},
doi = {10.1063/5.0136889},
journal = {AIP Advances},
title = {Verification of the generalized reduced-order particle-in-cell scheme in a radial-azimuthal E×B plasma configuration},
url = {http://dx.doi.org/10.1063/5.0136889},
volume = {13},
year = {2023}
}

Download

TY  - JOUR
AB  - In this article, we present an in-depth verification of the generalized electrostatic reduced-order particle-in-cell (PIC) scheme in a cross electric and magnetic field configuration representative of a radial-azimuthal section of a Hall thruster. The setup of the simulations follows a well-established benchmark case. The main purpose of this effort is to demonstrate that our novel PIC scheme can reliably resolve the complex two-dimensional dynamics and interactions of the plasma instabilities in the radial-azimuthal coordinates of a Hall thruster at a fraction of the computational cost compared to full-2D PIC codes. To this end, we first present the benchmarking of our newly developed full-2D PIC code. Next, we provide an overview of the reduced-order PIC scheme and the resulting “quasi-2D” code, specifying that the degree of order reduction in the quasi-2D PIC is defined in terms of the number of “regions” along the simulation’s directions used to divide the computational domain. We compare the predictions of the quasi-2D simulation in various approximation degrees of the 2D problem against our full-2D simulation results. We show that, by increasing the number of regions in the Q2D simulations, the quasi-2D results converge to the 2D ones. Nonetheless, we also highlight that a quasi-2D simulation that provides a factor of 5 reduction in the computational cost resolves the underlying physical processes in an almost indistinguishable manner with respect to the full-2D simulation and incurs a L2-norm error of only about 2 % in the ion number density and below 1 % in the electron temperature.
AU  - Faraji,F
AU  - Reza,M
AU  - Knoll,A
DO  - 10.1063/5.0136889
PY  - 2023///
SN  - 2158-3226
TI  - Verification of the generalized reduced-order particle-in-cell scheme in a radial-azimuthal E×B plasma configuration
T2  - AIP Advances
UR  - http://dx.doi.org/10.1063/5.0136889
UR  - http://hdl.handle.net/10044/1/102943
VL  - 13
ER  - 

Download