Developments of next generation simulation model of magnetosphere with two-fluid plasma

• Project/Area Number: 25800275
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Space and upper atmospheric physics
• Research Institution: Kyoto University (2014-2015); Kyushu University (2013)
• Principal Investigator: FUKAZAWA Keichiiro 京都大学, 学術情報メディアセンター, 准教授 (50377868)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 磁気圏シミュレーション / 宇宙プラズマ / 並列計算 / 数値シミュレーション / 2流体プラズマ

Outline of Final Research Achievements

To extend the MHD simulation code, the development of two-fluid plasma simulation was proceeded. The non-physical oscillations were found in the execution test then the simulation code needs to be reviewed including the equation system. In the explicit method the time step is defined by the light speed thus the introduction of implicit method was considered. However, the advantage of introduction was much small since the time step in the implicit method needs to be small to see the dynamic time evolution phenomena. To perform the calculation rapidly, the new communication model was introduced to the simulation, which achieved good performance in the massively parallel system.

Research Products

• [Journal Article] A high-resolution global Vlasov simulation of a small dielectric body with a weak intrinsic magnetic field on the K computer (2015)
  • Author(s): Umeda, T., and K. Fukazawa
  • Journal Title: Earth, Planets and Space Volume: 67 Issue: 1
  • DOI: 10.1186/s40623-015-0216-0
  • NAID: 120005756321
  • Peer Reviewed
• [Journal Article] Analyzing and mitigating the impact of manufacturing variability in power-constrained supercomputing (2015)
  • Author(s): Y. Inadomi, T. Patki, K. Inoue, M. Aoyagi, B. Rountree, M. Schulz, D. Lowenthal, Y. Wada, K. Fukazawa, M. Ueda, M. Kondo, I. Miyoshi
  • Journal Title: Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis (SC '15) Volume: 78 Pages: 12-12
  • DOI: 10.1145/2807591.2807638
  • Peer Reviewed / Int'l Joint Research
• [Presentation] A Simulation Study of the Dependence of the Vorticity in Saturn’s Magnetosphere on the IMF (2015)
  • Author(s): K. Fukazawa, R. J. Walker
  • Organizer: AGU Fall Meeting 2015
  • Place of Presentation: Sanfrancisco（USA）
  • Year and Date: 2015-12-14
• [Presentation] Dependence of the Vorticity in Kronian Magnetosphere on the IMF (2015)
  • Author(s): 深沢圭一郎、R. J. Walker
  • Organizer: 地球電磁気・地球惑星圏学会 第138回総会及び講演会
  • Place of Presentation: 東京大学本郷キャンパス理学部・山上会館（東京都文京区）
  • Year and Date: 2015-10-31
• [Presentation] エクサスケールコンピューティングに向けたHaloスレッドの電磁流体シミュレーションに対する効果 (2015)
  • Author(s): 深沢圭一郎、、森江善之、曽我武史、高見利也、南里豪志
  • Organizer: 第151回ハイパフォーマンスコンピューティング研究発表会
  • Place of Presentation: 沖縄県沖縄市
  • Year and Date: 2015-10-02
• [Presentation] An MHD Simulation of the Dynamics of the Kronian Magnetosphere Driven by Solar Wind Observations (2015)
  • Author(s): K. Fukazawa, and R. J. Walker
  • Organizer: AOGS 12th Annual Meeting,
  • Place of Presentation: Singapore（Singapore）
  • Year and Date: 2015-08-03
  • Int'l Joint Research / Invited
• [Presentation] 高解像度土星磁気圏シミュレーションにおける渦構造の形成 (2015)
  • Author(s): 深沢圭一郎
  • Organizer: 日本地球惑星連合2015年大会
  • Place of Presentation: 幕張メッセ国際会議場（千葉県千葉市）
  • Year and Date: 2015-05-24
• [Presentation] Massively parallel MHD simulation of convection and auroral emissions in Saturn's magnetosphere driven by the observed solar wind (2014)
  • Author(s): K. Fukazawa, R. J. Walker and S. Eriksson
  • Organizer: AGU Fall Meeting 2014
  • Place of Presentation: USA (San Francisco)
  • Year and Date: 2014-12-15 – 2014-12-19
• [Presentation] 大規模シミュレーションによる木星磁気圏の構造・ダイナミック スの研究 (2014)
  • Author(s): 深沢圭一郎
  • Organizer: 地球電磁気・地球惑星圏学会 第136回総会及び講演会
  • Place of Presentation: キッセイ文化ホール（長野県・松本市）
  • Year and Date: 2014-10-31 – 2014-11-03
• [Presentation] Key parameter of planetary magnetospheric configuration and dynamics (2013)
  • Author(s): Fukazawa, K., T. Ogino, R. J. Walker
  • Organizer: AGU Fall Meeting 2013
  • Place of Presentation: San Francisco, USA
• [Presentation] 実アプリを用いた様々なアーキテクチャからなる計算機システムの性能評価 (2013)
  • Author(s): 深沢 圭一郎、片桐 孝洋、大宮 学、江川 隆輔、大島 聡史、青木 尊之、下川辺 隆史、荻野 正雄、岩下 武史、東田 学
  • Organizer: 第199回ARC・第142回HPC合同研究発表会
  • Place of Presentation: 札幌