北京航空航天大学学报 ›› 2004, Vol. 30 ›› Issue (09): 831-834.

• 论文 • 上一篇    下一篇

肼电弧喷射推力器工作方式可替换性数值研究

肖应超, 汤海滨, 刘宇   

  1. 北京航空航天大学 宇航学院, 北京 100083
  • 收稿日期:2003-06-02 出版日期:2004-09-30 发布日期:2010-09-21
  • 作者简介:肖应超(1979-),男,湖北孝感人,博士生, ycx 79 2004@buaa.edu.cn.
  • 基金资助:

    国防基础科研资助项目(K1201060711); 国家自然科学基金资助项目(50086001)

Numerical study on hydrazine arcjet thruster working exchangeability

Xiao Yingchao, Tang Haibin, Liu Yu   

  1. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2003-06-02 Online:2004-09-30 Published:2010-09-21

摘要: 在正确理解电弧喷射推力器工作过程物理机理的基础上建立了其简化的物理模型,并基于此物理模型利用耦合电磁源项的N-S方程组来表达其数学模型,对相同结构尺寸的低功率肼电弧喷射推力器加电弧和不加电弧时的工作性能进行了比较计算.采用二阶精度无波动、无自由参数的耗散差分格式(NND格式)和显式时间推进法求出数值解.计算结果给出了有电弧和无电弧时推力器的流场结构,预计了不同工作方式及不同工作条件下推力器的推力和比冲,证实了推力器工作方式的可替换性.

Abstract: A simplified physical model of an arcjet thruster was established on the basis of proper understanding of the physical mechanism of its working course, and a mathematical model for it was expressed by using Navier-Stokes equations coupled with electromagnetic source terms based upon the physical model. Calculation for working performance of a low power hydrazine arcjet thruster with arc and without arc was achieved comparatively. Second-order-accuracy non-oscillatory and non-free-parameters dissipative finite difference scheme and explicit time-marching method were used to obtain numerical solutions. The computationalresults present flow configurations within the thruster with arc and without arc, foretell its thrust and specific impulse in various conditions, and attest its working exchangeability.

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