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Numerical analysis of inner flow field of pulsed plasma thruster(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2014年01期
Page:
39-44
Research Field:
研究与设计
Publishing date:

Info

Title:
Numerical analysis of inner flow field of pulsed plasma thruster
Author(s):
XIE Ze-hua;  ZHOU Jin;  LI Zi-ran
Key Laboratory of Scramjet Technology, National University of Defense Technology, Changsha 410073, China
Keywords:
pulsed plasma thruster;  magnetohydrodynamics model;  flow process;  numerical ana- lysis
PACS:
V439+.2
DOI:
-
Abstract:
A magnetohydrodynamics model in the form of the generalized Lagrange multiplier was adopted to simulate the inner flow field of a pulsed plasma thruster with rectangular geometry. Analyses on the flow process of plasma show that the plasma is accelerated to a high velocity to eject from the electrode channel under the strong electromagnetic acceleration in the beginning of the discharge. By contrast with this, the plasma moves downstream slowly in the later period of the discharge when aerodynamic force instead of electromagnetic force dominates the acceleration process. It indicates that the electromagnetic impulse accounts for the majority of the impulse bit of the thruster, and that the performance of this kind of thruster would benefit from the enhancement of electromagnetic acceleration effects.

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