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Similarity scaling‐application and limits for high‐efficiency‐multistage‐plasma‐thruster particle‐in‐cell modelling

  • Abstract To suit a wide variety of space mission profiles, different designs of ion thrusters were developed, such as the High‐Efficiency‐Multistage‐Plasma thrusters (HEMP‐T). In the past, the optimization of ion thrusters was a difficult and time‐consuming process and evolved experimentally. Because the construction of new designs is expensive, cheaper methods for optimization were sought‐after. Computer‐based simulations are a cheap and useful method towards predictive modelling. The physics in HEMP‐T requires a kinetic model. The Particle‐in‐Cell (PIC) method delivers self‐consistent solutions for the plasmas of ion thrusters, but it is limited by the high amount of computing time required to study a specific system. Therefore, it is not suited to explore a wide operational and design space. An approach to decrease computing time is self‐similarity scaling schemes, which can be derived from the kinetic equations. One specific self‐similarity scheme is investigated quantitatively in this work for selected HEMP‐Ts, using PIC simulations. The possible application of the scaling is explained and the limits of this approach are derived.

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Metadaten
Author: Paul Matthias, Daniel Kahnfeld, Stefan Kemnitz, Julia Duras, Norbert Koch, Ralf Schneider
URN:urn:nbn:de:gbv:9-opus-40854
DOI:https://doi.org/10.1002/ctpp.201900199
Parent Title (English):Contributions to Plasma Physics
Publisher:WILEY‐VCH Verlag GmbH & Co. KGaA
Place of publication:Weinheim
Document Type:Article
Language:English
Date of first Publication:2020/08/04
Release Date:2020/12/01
Tag:electric propulsion, low‐temperature plasma, similarity laws, simulation
GND Keyword:-
Volume:60
Issue:7
Faculties:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik
Licence (German):License LogoCreative Commons - Namensnennung