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首页> 美国政府科技报告 >Multi-Scale Modeling of Novel Hall Thrusters: Understanding Physics of CHT and DCF Thrusters.
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Multi-Scale Modeling of Novel Hall Thrusters: Understanding Physics of CHT and DCF Thrusters.

机译：新型霍尔推进器的多尺度建模：了解CHT和DCF推进器的物理特性。

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In order to simulate the magnetized plasma thruster devices (such as CHT, DCF etc) we have developed a multi-scale numerical code that is based on coupling of a PIC/MCC analysis of neutrals and ions in a general 2D domain (or 3D) and a 1D kinetic full PIC treatment of electrons along magnetic fields. The implementation of such a two-way coupling allows calculation of the electron transport in the real physical domain while significantly reducing the computational time associated with 2D full kinetic simulations. The objective of this study was to identify the individual contribution to transport from factors such as collisions, surface roughness, secondary electron emission, and plasma oscillations. Multi-scale model of the magnetized plasma thruster discharge in which a kinetic treatment was used for the electron component while a 2D (or 3D) macroscopic model will be employed for ion and neutral component analysis. Initial coupling of the microscopic and macroscopic model was performed via axial electric field, electron fluxes to the wall and electron cross-field transport. This model demonstrated improved prediction of electron mobility.

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