›› 2017, Vol. 37 ›› Issue (5): 68-.doi: 10.16708/j.cnki.1000-758X.2017.0074

• 研究探讨 • 上一篇    下一篇

电推力器中复杂电场求解的超松弛并行算法

 韩亚杰, 夏广庆, 吴秋云, 陈留伟, 周念东, 温正   

  1. 1大连理工大学工业装备结构分析国家重点实验室,大连116024
    2中国空间技术研究院通信卫星事业部,北京100094
  • 收稿日期:2017-03-21 修回日期:2017-08-09 出版日期:2017-10-25 发布日期:2017-09-12

Successiveoverrelaxationparallelalgorithmforsolvingcomplexelectricfieldinelectricthrusters

 HAN  Ya-Jie, XIA  Guang-Qing, WU  Qiu-Yun, CHEN  Liu-Wei, ZHOU  Nian-Dong, WEN  Zheng   

  1. 1StateKeyLaboratoryofStructureAnalysisforIndustrialEquipment,DalianUniversityofTechnology,Dalian116024,China
    2InstituteofTelecommunicationSatellite,ChinaAcademyofSpaceTechnology,Beijing100094,China
  • Received:2017-03-21 Revised:2017-08-09 Online:2017-10-25 Published:2017-09-12

摘要: 目前,电推力器中复杂电场的三维泊松方程求解仍存在速度偏慢、并行性欠佳等缺陷。通过分解三维求解区域,针对复杂电场提出一种超松弛并行迭代算法。将求解区域划分为多个子块,利用超松弛迭代格式构造出若干分组显式格式,分别给出不同迭代步数下的求解方程以进行并行计算。通过数值模拟,计算时间至少缩短一半以上,该PSOR方法较传统迭代格式在快速性方面取得较大进展,对电推进领域的数值仿真研究起到促进作用。

关键词: 电推力器, 泊松方程, 超松弛迭代, 并行算法

Abstract: Atpresent,solvingthethreedimensionalPoissonequationofcomplexelectricfieldintheelectricthrusterstillhasthedisadvantagesofslownessandpoorparallelism.
Asuccessiveoverrelaxationparallel(PSOR)iterativealgorithmwasproposedtosolvethethreedimensionalPoissonequationbasedontheideaofdomaindecomposition.Thesolutionregionwasdividedintoseveralsubdomains.AndanumberofexplicitschemeswereconstructedbyusingtheSORmethod.Thenaccordingtothedifferentschemes,thesolvingequationsfordifferentiterativestepsweregivenforparallelcomputation.Thenumericalsimulationresultsshowthatthecalculationtimeisreducedbyatleasthalf.AndthePSORmethodhasmadegreatprogressinthecomputationspeedcomparedwiththetraditionaliterativescheme.

Key words: electricthruster, Poissonequation, successiveoverrelaxationiteration, parallelalgorithm