位相空間における構造形成の積極的選択によるプラズマ非局所輸送の制御手法の開拓

• Project/Area Number: 26400531
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma science
• Research Institution: Kyoto University
• Principal Investigator: 李 継全 京都大学, エネルギー科学研究科, 准教授 (00437253)
• Co-Investigator(Kenkyū-buntansha): 岸本 泰明 京都大学, エネルギー科学研究科, 教授 (10344441) ; 今寺 賢志 京都大学, エネルギー科学研究科, 助教 (90607839)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Discontinued (Fiscal Year 2016)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 位相空間構造 / ジャイロ運動論 / ITGモード / 帯状流 / 多階層乱流 / プラズマシミュレーション / 磁気島 / 共鳴高周波加熱 / 乱流拡散 / ＩＴＧモード

Outline of Annual Research Achievements

H28年度は、(1)ジャイロ運動論、およびジャイロ流体モデルによる境界領域における大振幅乱流と帯状流の非線形相互作用の解析、(2)位相空間における多階層乱流に関するジャイロ運動論理論の研究、さらには(3)大規模シミュレーションを想定したジャイロ運動論コードの改良を行った。
(1) 長谷川-若谷(Hasegawa-Wakatani)モデルを用いて、境界領域における大振幅乱流と帯状流間の非線形相互作用の解析を行った。特に、運動量保存則から大振幅乱流に対する帯状流のモデル方程式を構築し、帯状流に対する作用を検討した結果、乱流は帯状流に対して負の粘性効果を与えることを見出した。
(2) プラズマ位相空間における構造形成や乱流との非局所相互作用を積極的に選択することを目指し、多階層乱流に対するジャイロ運動論理論を構築した。具体的には、大振幅プラズマ乱流中の粒子運動を記述する新たなジャイロ運動論理論モデルを非正準Lie摂動論に基づいて導出し、多階層乱流の時空尺度に依存する新しい一次元ラグランジュ形式を導くことに成功した。さらに、この理論を同定するシミュレーション手法を開発し、より広範のパラメータ領域において本理論が適用可能であることを見出した。
(3) 10,000プロセス程度までの高効率並列化を目的とした大域的乱流輸送コードGKNETのチューニングを行った。特に従来のプロセス並列をハイブリッド並列に拡張し、領域分割法の変更を行った結果、4096プロセスで1.4倍程度の性能改善が得られた。スケーリングも改善されており、より大規模計算を行うためのコード開発ができたと言える。

Research Products

• [Journal Article] Dual roles of shear flow in nonlinear multi-scale interactions (2016)
  • Author(s): Z.Q. Hu, Z.X. Wang, L. Wei, J.Q. Li and Y. Kishimoto
  • Journal Title: Nucl. Fusion Volume: 56 Issue: 1 Pages: 016012-016012
  • DOI: 10.1088/0029-5515/56/1/016012
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Nonlinear evolution of the Kelvin-Helmholtz instability in the double current sheet configuration (2016)
  • Author(s): Aohua Mao, Jiquan Li, Jinyuan Liu, and Yasuaki Kishimoto
  • Journal Title: Phys. Plasmas Volume: 23 Issue: 3 Pages: 032117-032117
  • DOI: 10.1063/1.4943888
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Laser propagation and soliton generation in strongly magnetized plasmas (2016)
  • Author(s): W. Feng, J. Q. Li, and Y. Kishimoto
  • Journal Title: Phys. Plasmas Volume: 23 Issue: 3 Pages: 032102-032102
  • DOI: 10.1063/1.4942789
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Development of a Global Toroidal Gyrokinetic Vlasov Code with New Real Space Field Solver (2015)
  • Author(s): Kevin Obrejan, Kenji Imadera, Jiquan Li and Yasuaki Kishimoto
  • Journal Title: Plasma and Fusion Research Volume: 10 Issue: 0 Pages: 3403042-3403042
  • DOI: 10.1585/pfr.10.3403042
  • NAID: 130005302854
  • ISSN: 1880-6821
  • Peer Reviewed / Open Access
• [Journal Article] On the magnetic reconnection of resistive tearing mode with the dynamic flow effects (2015)
  • Author(s): A. Ali, Jiquan Li, Y. Kishimoto
  • Journal Title: Phys. Plasmas Volume: 22 Issue: 4 Pages: 042102-042102
  • DOI: 10.1063/1.4916776
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Intermittent bursts in ion-temperature-gradient turbulence (2015)
  • Author(s): L. Wei, Z. X. Wang, Z. Q. Hu, J. Q. Li, and Y. Kishimoto
  • Journal Title: Phys. Plasmas Volume: 22 Issue: 11 Pages: 112505-112505
  • DOI: 10.1063/1.4935907
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spatial localization of resistive drift wave structure in tokamak edge plasmas with an embedded magnetic island (2014)
  • Author(s): Shilin Hu, Jiquan Li, Hongpeng Qu and Y. Kishimoto
  • Journal Title: Phys. Plasmas Volume: 21 Issue: 10 Pages: 102508-102508
  • DOI: 10.1063/1.4897942
  • NAID: 120005512265
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Nonlinear mutual destabilization of tearing mode and ion temperature gradient mode (2014)
  • Author(s): Z. Q. Hu, Z. X. Wang, L. Wei, J. Q. Li, and Y. Kishimoto
  • Journal Title: Nucl. Fusion Volume: 54 Issue: 12 Pages: 123018-123018
  • DOI: 10.1088/0029-5515/54/12/123018
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Zonal flow dynamics in the double tearing mode with antisymmetric shear flows (2014)
  • Author(s): Aohua Mao, Jiquan Li, Jinyuan Liu and Y. Kishimoto
  • Journal Title: Phys. Plasmas Volume: 21 Issue: 5 Pages: 052304-052304
  • DOI: 10.1063/1.4875729
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] n the abrupt growth dynamics of nonlinear resistive tearing mode and the viscosity effects (2014)
  • Author(s): A. Ali, Jiquan Li, Y. Kishimoto
  • Journal Title: Phys. Plasmas Volume: 21 Issue: 5 Pages: 052312-052312
  • DOI: 10.1063/1.4881464
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] ITB formation in gyrokinetic ITG turbulence with toroidal momentum injection (2016)
  • Author(s): K. Imadera, J. Q. Li, Y. Kishimoto
  • Organizer: 2016 Kyoto Univ. - UNIST Workshop on Turbulence and MHD in Fusion Plasmas
  • Place of Presentation: Kyowon Dream Center, Gyeongju, Korea
  • Year and Date: 2016-04-25
• [Presentation] Global and non-local/non-transient aspect of turbulent transport based on gyrokinetic and fluid modeling (2016)
  • Author(s): Y. Kishimoto, K. Imadera, K. Obrejan, H. Liu, W. Wang, J. Lee, J. Q. Li
  • Organizer: 2016 Kyoto Univ. - UNIST Workshop on Turbulence and MHD in Fusion Plasmas
  • Place of Presentation: Kyowon Dream Center, Gyeongju, Korea
  • Year and Date: 2016-04-25
• [Presentation] Gyrokinetic simulation on the role of 3D magnetic island in toroidal ITG modes (II) (2015)
  • Author(s): Jiquan Li, K. Imadera and Y. Kishimoto
  • Organizer: 第70回日本物理学会年次大会（2015年秋季大会）
  • Place of Presentation: 関西大学 千里山キャンパス
  • Year and Date: 2015-09-16
• [Presentation] 1次Ballooning 理論に基づく乱流の非局所構造と間欠性（III） (2015)
  • Author(s): 岸本泰明, 今寺賢志, Jaehyun Lee, Hairui Liu, Wei Wang, Kevin Obrejan, 李継全
  • Organizer: 第70回日本物理学会年次大会（2015年秋季大会）
  • Place of Presentation: 関西大学 千里山キャンパス
  • Year and Date: 2015-09-16
• [Presentation] The effect of magnetic shaping on zonal flow and geodesic acoustic mode in a toroidal global gyrokinetic simulation (2015)
  • Author(s): Kevin Obrejan, Kenji Imadera, Ji-Quan LI and Yasuaki Kishimoto
  • Organizer: 第70回日本物理学会年次大会（2015年秋季大会）
  • Place of Presentation: 関西大学 千里山キャンパス
  • Year and Date: 2015-09-16
• [Presentation] Study of spatio-temporal E×B shear dynamics in gyro-kinetic toroidal flux-driven ITG turbulence (2015)
  • Author(s): W. Wang, K. Imadera, K. Obrejan, J.Q. Li, H. Liu, Z.X. Wang, Y. Kishimoto
  • Organizer: 第70回日本物理学会年次大会（2015年秋季大会）
  • Place of Presentation: 関西大学 千里山キャンパス
  • Year and Date: 2015-09-16
• [Presentation] Gyrokinetic simulation on the role of 3D magnetic island in toroidal ITG modes (I) (2015)
  • Author(s): Jiquan Li, K. Imadera and Y. Kishimoto
  • Organizer: 第70回年次大会（2015年）
  • Place of Presentation: 早稲田大学 早稲田キャンパス
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Non-local profile relaxation and barrier formation in toroidal flux-driven turbulence (2015)
  • Author(s): Kenji Imadera, Yasuaki Kishimoto, Kevin Obrejan, Takuya Kobiki and Jiquan Li
  • Organizer: The 7th IAEA Technical Meeting on “Theory of Plasma Instabilities”
  • Place of Presentation: Frascati, Italy
  • Year and Date: 2015-03-04 – 2015-03-06
  • Invited
• [Presentation] 熱源駆動型乱流に対するトロイダル回転の影響 (2015)
  • Author(s): 今寺賢志，岸本泰明，故引拓也，Kevin Obrejan，李継全
  • Organizer: 第4回 IFERC-CSC研究会
  • Place of Presentation: 航空会館, 東京都板橋区
  • Year and Date: 2015-02-19 – 2015-02-20
• [Presentation] Non-local structure and transprt in toroidal flux-driven ITG turbulence (2015)
  • Author(s): Kenji Imadera, Yasuaki Kishimoto, Kevin Obrejan Takuya Kobiki and Jiquan Li
  • Organizer: 20th NEXT Workshop
  • Place of Presentation: 京都テルサ（京都市）
  • Year and Date: 2015-01-13 – 2015-01-14
• [Presentation] Gyrokinetic simulation on the effect of magnetic island on the ITG instability in tokamak plasmas (2015)
  • Author(s): Jiquan Li, Kenji Imadera and Yasuaki Kishimoto
  • Organizer: 20th NEXT Workshop
  • Place of Presentation: 京都テルサ（京都市）
  • Year and Date: 2015-01-13 – 2015-01-14
• [Presentation] プラズマ乱流の非局性と動的分布拘束性の起源－運動論モデルによる大域シミュレーションの展開－ (2015)
  • Author(s): Yasuaki Kishimoto, Kenji Imadera and Jiquan Li
  • Organizer: 20th NEXT Workshop
  • Place of Presentation: 京都テルサ（京都市）
  • Year and Date: 2015-01-13 – 2015-01-14
• [Presentation] Generation mechanism of oscillatory zonal flows in MHD fluctuations and its implication in understanding turbulent transport (2014)
  • Author(s): Jiquan Li, A. Mao, Y. Kishimoto
  • Organizer: Plasma Conference 2014
  • Place of Presentation: 朱鷺メッセ（新潟市）
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] 熱源変調に伴う乱流輸送の動的応答に関するジャイロ運動論シミュレーション (2014)
  • Author(s): 今寺賢志，岸本泰明，故引拓也，Kevin Obrejan，李継全
  • Organizer: Plasma Conference 2014
  • Place of Presentation: 朱鷺メッセ（新潟市）
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] 1次Ballooning理論に基づく乱流の非局所構造と間欠性 (2014)
  • Author(s): 岸本泰明, 今寺賢志
  • Organizer: Plasma Conference 2014
  • Place of Presentation: 朱鷺メッセ（新潟市）
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] Non-local structure and transprt in toroidal flux-driven ITG turbulence (2014)
  • Author(s): Kenji Imadera, Yasuaki Kishimoto, Kevin Obrejan Takuya Kobiki and Jiquan Li
  • Organizer: JIFT Workshop on Progress in Kinetic Plasma Simulation
  • Place of Presentation: New Orleans, USA
  • Year and Date: 2014-10-31 – 2014-11-01
• [Presentation] Global Profile Relaxation Coupled with E×B Staircase in Toroidal Flux-Driven ITG Turbulence (2014)
  • Author(s): Kenji Imadera, Yasuaki Kishimoto, Kevin Obrejan Takuya Kobiki and Jiquan Li
  • Organizer: 25th Fusion Energy Conference (FEC 2014)
  • Place of Presentation: Saint Petersburg, Russia
  • Year and Date: 2014-10-13 – 2014-10-18
• [Presentation] Gyrokinetic simulation on turbulence spreading dynamics in a magnetic shearless plasma (2014)
  • Author(s): Jiquan Li, K. Imadera and Y. Kishimoto
  • Organizer: 4th Asia-Pacific Transport Working Group(APTWG)
  • Place of Presentation: Kyushu University in Fukuoka
  • Year and Date: 2014-06-10 – 2014-06-13
• [Presentation] Non-local profile relaxation coupled with E×B staircase in toroidal flux-driven ITG turbulence (2014)
  • Author(s): Kenji Imadera, Yasuaki Kishimoto, Kevin Obrejan, Takuya Kobiki and Jiquan Li
  • Organizer: 4th Asia Pacific Transport Working Group(APTWG) International Conference
  • Place of Presentation: Kyushu University, Fukuoka
  • Year and Date: 2014-06-10 – 2014-06-13