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Construction of extended MHD theory for plasma current driven by magnetic helicity injection

Research Project

Project/Area Number 16K05627
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Plasma science
Research InstitutionTohoku University

Principal Investigator

Hirota Makoto  東北大学, 流体科学研究所, 准教授 (40432900)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords二流体プラズマ / 数値シミュレーション / 自己組織化 / 拡張電磁流体力学 / 電子慣性 / 磁気ヘリシティ / テイラー緩和 / 磁気リコネクション / プラズマ・核融合
Outline of Final Research Achievements

A numerical simulation code is developed for solving the extended magnetohydrodynamic (MHD) equations, which includes two-fluid effects. In particular, for the purpose of simulating the experiments of magnetic helicity injection into plasmas, the appropriate boundary condition is formulated to impose voltages on the conductive wall. This simulation code can estimate self-organized current that is eventually generated through complicated turbulent process followed by magnetic helicity injection. A comparison is made with the MHD theoretical prediction and the two-fluid effects on relaxation are investigated.

Academic Significance and Societal Importance of the Research Achievements

核融合発電炉の実現に向けて、国際プロジェクトITERが進行中であるが、そこで採用されているトカマク方式では放電時間に制限があり、そのままではパルス運転になることが懸念されている。磁気ヘリシティ入射によってプラズマ中に自発的に発生する電流を理論的に予測・制御し、効率的な条件を見つけることができれば、新たな電流駆動方式として将来的な応用が期待される。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (20 results)

All 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (4 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Acknowledgement Compliant: 1 results) Presentation (12 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results) Remarks (1 results)

  • [Int'l Joint Research] テキサス大学オースティン校(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] テキサス大学(米国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] テキサス大学(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] テキサス大学(米国)

    • Related Report
      2016 Research-status Report
  • [Journal Article] An Explosive Scaling Law for Nonlinear Magnetic Reconnection and Its Insensitivity to Microscopic Scales2017

    • Author(s)
      M. Hirota
    • Journal Title

      Plasma and Fusion Research

      Volume: 12 Issue: 0 Pages: 1401010-1401010

    • DOI

      10.1585/pfr.12.1401010

    • NAID

      130006897717

    • ISSN
      1880-6821
    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Stability boundaries and sufficient stability conditions for stably stratified, monotonic shear flows2016

    • Author(s)
      M. Hirota, P. J. Morrison
    • Journal Title

      Physics Letters A

      Volume: 380 Issue: 21 Pages: 1856-1860

    • DOI

      10.1016/j.physleta.2016.03.044

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 無衝突プラズマにおける爆発的磁気リコネクションの理論2016

    • Author(s)
      廣田 真
    • Journal Title

      プラズマ・核融合学会誌

      Volume: 92 Pages: 861-867

    • NAID

      40021064636

    • Related Report
      2016 Research-status Report
  • [Presentation] 磁気ヘリシティ入射と緩和の拡張MHDシミュレーション2020

    • Author(s)
      廣田真, Philip J. Morrison,Wendell Horton, 服部裕司
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 電子慣性効果を含む拡張MHD方程式の境界条件2019

    • Author(s)
      廣田真
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] AC磁気ヘリシティ入射が引き起こすプラズマ周辺部のMHD挙動2018

    • Author(s)
      廣田 真, P. J. Morrison, W. Horton, 服部 裕司
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 交流電圧を用いた磁気ヘリシティ入射による定常電流駆動のシミュレーション2017

    • Author(s)
      廣田 真, P. J. Morrison, W. Horton, 服部 裕司
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学 (大阪府・豊中市)
    • Year and Date
      2017-03-18
    • Related Report
      2016 Research-status Report
  • [Presentation] Gyrofluid Energy Principle and Its Application to Fast Magnetic Reconnection2017

    • Author(s)
      M. Hirota, P. J. Morrison
    • Organizer
      1st Asia-Pacific Conference on Plasma Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Magnetic helicity balance at Taylor relaxed states sustained by AC helicity injection2017

    • Author(s)
      M. Hirota, P. J. Morrison, W. Horton, Y. Hattori
    • Organizer
      59th Annual Meeting of the APS Division of Plasma Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical simulation of magnetohydrodynamic relaxation controlled by external AC loop voltages2017

    • Author(s)
      M. Hirota, P. J. Morrison, W. Horton, Y. Hattori
    • Organizer
      14th International Conference on Flow Dynamics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] ACヘリシティ入射によって維持されるヘリカルなテイラー緩和状態の数値計算2017

    • Author(s)
      廣田 真, P. J. Morrison, W. Horton, 服部 裕司
    • Organizer
      Plasma Conference 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 無衝突プラズマにおける爆発的磁気リコネクションの理論2016

    • Author(s)
      廣田 真
    • Organizer
      プラズマ・核融合学会第33回年会
    • Place of Presentation
      東北大学(宮城県・仙台市)
    • Year and Date
      2016-12-02
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Energy principle for a gyrofluid model and variational description of collisionless tearing modes2016

    • Author(s)
      M. Hirota, P. J. Morrison
    • Organizer
      58th Annual Meeting of the APS Division of Plasma Physics
    • Place of Presentation
      San Jose (USA)
    • Year and Date
      2016-10-31
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Stability Criteria for Circular Vortex Tubes with Smooth Vorticity Profiles2016

    • Author(s)
      M. Hirota, P. J. Morrison, Y. Hattori
    • Organizer
      13th International Conference on Flow Dynamics
    • Place of Presentation
      仙台国際センター (宮城県・仙台市)
    • Year and Date
      2016-10-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Variational formalism for linear growth rates of collisionless tearing modes2016

    • Author(s)
      M. Hirota
    • Organizer
      IUTAM Symposium "Helicity Structures and Singularity in Fluid and Plasma Dynamics"
    • Place of Presentation
      Venice (Italy)
    • Year and Date
      2016-04-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Remarks] 東北大学流体科学研究所 服部・廣田研究室

    • URL

      http://eagle.ifs.tohoku.ac.jp/

    • Related Report
      2019 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2022-02-21  

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