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Numerical study on end effect of the seawater MHD thruster in a linear channel

Xiaoqiang Chen1 - Lingzhi Zhao1,2 - Feng Wang1 - Aiwu Peng1,2

1 Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
2 University of Chinese Academy of Sciences, Beijing 100049, China

The end effect of the MHD thruster refers to the phenomenon of seawater flowing under the end magnetic field and the end electric field of the thruster channel and its influence on propulsion performance. Starting from the thruster power balance equation and the end effect mechanism, this paper defines five dimensionless parameters: the Joule heat power coefficient, the electromagnetic power coefficient, the leakage current coefficient, the electromagnetic force coefficient, and the electromagnetic efficiency coefficient to characterize and quantify the end effect of the MHD thruster. Based on Ansys Fluent 3D numerical simulation, the influence of applied voltage, flow rate and channel structure on the end effect was studied, and the influencing factors and variation rules of the end effect were obtained. The research methods applied and research results obtained in this study can provide guidance and be a basis for the optimal design of high-performance linear channel MHD thrusters. Key words: Seawater MHD thruster, linear channel, end effect, numerical simulation. Tables 2, Figs 13, Refs 13.

Magnetohydrodynamics 59, No. 2, 235-250, 2023 [PDF, 2.30 Mb]

Copyright: Institute of Physics, University of Latvia
Electronic edition ISSN 1574-0579
Printed edition ISSN 0024-998X