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2005 Fiscal Year Final Research Report Summary

Solar wind, magnetosphere and ionosphere dynamics by using common parallel simulation codes

Research Project

Project/Area Number 14204046
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Space and upper atmospheric physics
Research InstitutionNagoya University

Principal Investigator

OGINO Tatsuki  Nagoya University, Solar-Terrestrial Environment Laboratory, Professor, 太陽地球環境研究所, 教授 (00109274)

Co-Investigator(Kenkyū-buntansha) WATANABE Shigeto  Hokkaido Univ., Faculty of Science, Professor, 理学研究科, 教授 (90271577)
FUJIMOTO Masaki  Tokyo Institute Of Technology Univ., Graduate School of Engineering, Associate Professor, 理工学研究科, 助教授 (30242811)
UKAI Masayuki  Ehime Univ., Faculty of Engineering, Professor, 工学部, 教授 (10036444)
TERASAWA Toshio  Tokyo Univ., School Of Science, Professor, 理学系研究科, 教授 (30134662)
HADA Susumu  Kyusyu Univ., Interdiciplinary Graduate School of Engineering Sciences, Associate professor, 総合理工学研究院, 助教授 (30218490)
Project Period (FY) 2002 – 2005
Keywordsnew-age parallel supercomputer / common parallel computing method / magnetohydrodynamic code / hybrid code / particle code / solar wind-magnetosphere interaction / magnetic reconnection / nonlinear physics in space plasma
Research Abstract

In recent years, the supercomputer which can be used for large-scale simulation is changing from the vector-parallel machine quickly to the scalar-parallel machine. Hitachi and FUJITSU shift to marketing of a cluster type scalar-parallel machine even in Japan, and only NEC is continuing development of the vector-parallel machine. In order to achieve a high-efficient computation by scalar-parallel machine which will become the mainstream in future more and more, it is required that the order of array is changed in order to raise hit rate of the cache, and that the three-dimensional domain decomposition method and the communication method by the consolidation system are introduced. By development of new three-dimensional MHD (magnetohydrodynamic) code which satisfies such conditions, it can bring for the first time the possibility of the effective utilization of the large scale scalar-parallel machine. Of course, a high-speed hard transfer function is necessary. The 3D MHD code which has high efficiency of 40-70% in the vector-parallel machine can be certainly expectable that it exceeds 20% even in a scalar-parallel machine from the test calculation using this FUJITSU PRIMEPOWER HPC2500. Thus it turned out that many of MHD/Fluid, Particle and Hybrid codes written by MPI (message Passing Interface) Fortran aree executable with high performance even in the scalar-parallel supercomputers. These successful results in development of simulation codes have surely brought us to carry out a large-scale space simulation in order to study the magnetosphere and ionosphere dynamics and nonlinear kinetic phenomena in space physics.

  • Research Products

    (14 results)

All 2006 2005 2004

All Journal Article (12 results) Book (2 results)

  • [Journal Article] Kelvin-Helmholtz instability in a unstable layer of finite-thickness2006

    • Author(s)
      C.Hashimoto.他
    • Journal Title

      Adv. Space Res. (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] On the importance of antiparallel reconnection when the dipole tilt and IMF By are non-zero2006

    • Author(s)
      Park, K.S.他
    • Journal Title

      J. Geophys. Res. (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Kelvin-Helmholtz instability in a unstable layer of finite-thickness,2006

    • Author(s)
      C.Hashimoto, et al.
    • Journal Title

      Adv.Space Res. (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] On the importance of antiparallel reconnection when the dipole tilt and IMF By are non-zero,2006

    • Author(s)
      Park, K.S., et al.
    • Journal Title

      J.Geophys.Res. (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Spontaneous fast reconnection model in three dimensions2005

    • Author(s)
      M.Ugai.他
    • Journal Title

      Phys. Plasmas Vol.12

      Pages: 042303-1-7

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Electron surfing acceleration in magnetic reconnection2005

    • Author(s)
      M.Hoshino.他
    • Journal Title

      J. Geophys. Res. 110,A10215

      Pages: doi:10.1029/2005 JA011229

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Repeated injections of energy in the first 600 ms of the giant flare of SGR 1806-202005

    • Author(s)
      T.Terasawa, 他
    • Journal Title

      Nature 434

      Pages: 1110-1111, doi:10.1038/nature 03573

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Dynamics of the Jovian magnetosphere for northward interplanetary magnetic field (IMF)2005

    • Author(s)
      Fukazawa, K., 他
    • Journal Title

      Geophys. Res. Lett. 32

      Pages: doi:10.1029/200 4GL021392

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Spontaneous fast reconnection model in three dimensions,2005

    • Author(s)
      M.Ugai, et al.
    • Journal Title

      Phys.Plasmas Vol.12

      Pages: 042303-1-042303-7

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Electron surfing acceleration in magnetic reconnection,2005

    • Author(s)
      M.Hoshino, et al.
    • Journal Title

      J.Geophys.Res. 110, A10215

      Pages: doi:10.1029/2005JA011229

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Repeated injections of energy in the first 600 ms of the giant flare of SGR 1806-20,2005

    • Author(s)
      T.Terasawa, et al.
    • Journal Title

      Nature 343

      Pages: 1110, doi:10.1038/nature03573-1111

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Dynamics of the Jovian magnetosphere for northward interplanetary magnetic field (IMF)2005

    • Author(s)
      Fukazawa, K., et al.
    • Journal Title

      Geophys.Res.Lett. 32

      Pages: doi:10.1029/2004GL021392

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] Nonthermal Particle Acceleration in Magnetic Reconnection, in Recent Research Developments in Plasmas (ed. M. Ugai)2004

    • Author(s)
      M.Hoshino
    • Total Pages
      28
    • Publisher
      Research Signpost, India
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Nonthermal Particle Acceleration in Magnetic Reconnection, in Recent Research Developments in Plasmas (ed. M.Ugai)2004

    • Author(s)
      M.Hoshino
    • Total Pages
      239-266
    • Publisher
      Research Signpost, India
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2007-12-13  

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