关键词: 电弧喷射发动机;电磁场;模型;数值算法

Abstract: To achieve coupling numerical simulation of the whole fields including flow field, electric field, magnetic field and chemical reaction efficiently and to illustrate the characteristic of electromagnetic field within arcjet thruster flow region, an appropriate electromagnetic field model was established and detailed investigation on numerical solution for it was carried out. The electromagnetic field model was based upon the steady-state operating characteristic of the thruster and the control equation was simplified from Maxwell’s equations. Finite control volume integral method was adopted to discretize the elliptic control equation and nine different iteration techniques were introduced to solve the discretized equation numerically. Convergence speed, stability of solution and ultimate precision of each iteration technique are presented. The investigation indicates that Gauss-Seidel successive line over relaxation method is an efficient numerical solution in this instance.

Key words: Arcjet engine;Electromagnetic field;Model;Numerical algorithm