Linear and Nonlinear Simulation of Kinetic Internal Kink Modes

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概要

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• A three dimensional gyro-fluid code which has the realism with respect to the spatial resolution is developed in addition to the gyrokinetic particle code which is more faithful to the physics but consumes much computer resources. The new gyro-fluid code is a two field model including the kinetic effects of electrons. The linear and nonlinear dynamics of the m = 1 (poloidal mode number) and n = 1 (toroidal mode number) kinetic internal kink mode, which is closely related to the physics of the sawtooth collapse in present day large tokamaks, is simulated by the code. The fast Kadomtsev-type full reconnection (first step) followed by the second step reforming the configuration of q_0 < 1 (q_0 is the safety factor at the magnetic axis) is observed. The results of the gyro-fluid code are compared with those of the gyrokinetic particle codes. Better understanding of the physics associated with the kinetic magnetohydrodynamic (MHD) phenomena in tokamaks will be achieved by executing simultaneously the gyrokinetic particle and gyro-fluid simulations.

• 社団法人プラズマ・核融合学会の論文
• 1997-02-25

著者

• 徳田 伸二

  Naka Fusion Research Establishment, Japan Atomic Energy Research Institute

• 内藤 裕志

  Department of Electrical and Electronic Engineering, Yamaguchi University

• NAITOU Hiroshi

  Department of Electrical and Electronic Engineering, Yamaguchi University

• Tokuda Shinji

  Naka Fusion Research Establishment Japan Atomic Energy Research Institute

• Naitou Hiroshi

  Department Of Electrical And Electronic Engineering Yamaguchi University

• KITAGAWA Hironori

  Department of Electrical and Electronic Engineering, Yamaguchi University

• Kitagawa Hironori

  Department Of Electrical And Electronic Engineering Yamaguchi University

• 北川 弘典

  Department of Electrical and Electronic Engineering, Yamaguchi University

関連論文

• Bilinear Formulation of the Frieman-Rotenberg Equation
• A Particle-Fluid Hybrid Simulation Model Based on Nonlinear Gyrokinetics
• Stabilization of Kinetic Internal Kink Mode by Ion Diamagnetic Effects
• Gyro-Kinetic Particle Simulation of m = 1 Internal Kink Mode in the Presence of Density Gradient
• Generation of radial electric field in the process of full reconnection by kinetic kink mode
• Gyrokinetic Particle Simulation Using the Orbit Averaged Electron Drift-Kinetic Equation
• Observation of Resistive Wall Modes in JT-60U
• Simulation Study on the Motion of the Pressure Perturbation in an Axisymmetric Toroidal System (Gases, Plasmas and Electric Discharges)
• Parallelization of Gyrokinetic Particle Code and its Application to Internal Kink Mode Simulation
• The Properties of Collision in the Plasma Composed of the Finite-Sized Particles of 2-Species
• Linear and Nonlinear Simulation of Kinetic Internal Kink Modes
• A New Scheme for Inner Layer Equations in Resistive MHD Stability Theory of Plasmas
• Spatial Control of Electron Energy Distribution Function in a Magnetically Filtered Multically Plasma Source

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