Local Gyrokinetic Vlasov Simulations with Realistic Tokamak MHD Equilibria

• NAKATA Motoki

  Japan Atomic Energy Agency

• MATSUYAMA Akinobu

  Japan Atomic Energy Agency

• AIBA Nobuyuki

  Japan Atomic Energy Agency

• MAEYAMA Shinya

  Japan Atomic Energy Agency

• NUNAMI Masanori

  National Institute for Fusion Science

• WATANABE Tomo-Hiko

  Department of Physics, Nagoya University

抄録

A local gyrokinetic Vlasov simulation code GKV is extended to incorporate realistic tokamak equilibria including up-down asymmetry, which are produced by a free-boundary 2D Grad-Shafranov equation solver MEUDAS. By using a newly developed interface code IGS, two dimensional rectangular equilibrium data from MEUDAS is converted to straight-field-line flux coordinates such as Hamada, Boozer, and axisymmetric coordinates, which are useful for gyrokinetic micro-instability and turbulent transport analyses. The developed codes have been verified by a cross-code benchmark test using Cyclone-base-case like MHD equilibrium, where good agreement in the dispersion relation of ion temperature gradient (ITG) driven mode has been confirmed. The extended GKV is applied to two types of shaped plasmas expected in JT-60SA tokamak devices, i.e., ITER-like and highly-shaped plasmas, and ITG-mode stability and residual zonal-flow level are investigated. Through the detailed comparisons, more favorable stability properties against the ITG mode are revealed for the highly-shaped case, where the lower ITG-mode growth rate and higher residual zonal-flow levels compared to the ITER-like case are identified.

収録刊行物

• Plasma and Fusion Research

  Plasma and Fusion Research 9 (0), 1403029-1403029, 2014

  一般社団法人 プラズマ・核融合学会

キーワード

• gyrokinetic Vlasov simulation
• realistic geometry
• ITG mode

詳細情報

• CRID: 1390001205254587136
• NII論文ID: 130005088368
• NII書誌ID: AA12346675
• DOI: 10.1585/pfr.9.1403029
• ISSN: 18806821
• ISSN: http://id.crossref.org/issn/18806821
• HANDLE: 10655/00013427
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/11503
• 本文言語コード: en
• データソース種別:
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  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可