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Authors: Binder, Tilman
Title: Development and application of PICLas for combined optic-/plume-simulation of ion-propulsion systems
Other Titles: Weiterentwicklung und Anwendung von PICLas für die kombinierte Optik-Plume-Simulation von Ionenantrieben
Issue Date: 2019 Dissertation 146, III
URI: Druck-Ausgabe beim Verlag Dr. Hut, München erschienen. ISBN 978-3-8439-4255-3
Abstract: Electric propulsion systems are an efficient option for altitude/attitude control and orbit transfers of spacecraft. One example is the gridded ion thruster which ionizes the propellant and accelerates the ions of the generated plasma by a high-voltage grid system. This work deals with the numerical simulation of the plasma flow starting near the grid system in the ionization chamber and leaving the thruster with high velocity. These simulations give direct insight into the modeled, physical interrelationships and can be used to investigate questions arising in the industrial development process of ion propulsion systems. The required simulation method is challenging due to the high degree of flow rarefaction and the plasma state itself, including freely moving ions and electrons. Applicable simulation methods belong to a particle-based, gas-kinetic approach, such as Particle-In-Cell (PIC) for the simulation of electromagnetic interaction and the Direct Simulation Monte Carlo (DSMC) for inter-particle collisions. The effects resulting from the finite size of a real system can only be investigated by simulating the complete, three-dimensional thruster geometry which requires a large and complex simulation domain. Acceptable simulation times are realized by expanding and using the framework of the coupled PIC-DSMC code PICLas in combination with high performance computing systems.
Appears in Collections:06 Fakultät Luft- und Raumfahrttechnik und Geodäsie

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