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arXiv 1701.05907physics.plasm-ph
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全球托卡马克边界等离子体静电回旋动力学模拟及非线性间歇turbulence的产生

Electrostatic gyrokinetic simulation of global tokamak boundary plasma and the generation of nonlinear intermittent turbulence

S. Ku, R. M. Churchill, C. S. Chang, R. Hager, E. S. Yoon, M. Adams, E. D'Azevedo, P. H. Worley

摘要:

边界等离子体物理在托卡马克约束中起着重要的作用,但由于磁分界线和开放磁场几何中尺度不可分的非定域多物理,使得回旋动力学程序难以模拟。中性粒子也是边界等离子体物理的重要组成部分。本文报道了用惰性静电回旋技术模拟磁通驱动的低β静电边界等离子体。回旋运动离子和漂移运动电子的利用没有新古典和湍流动力学之间的尺度分离。结果表明,非线性间歇湍流是边界等离子体中磁分界面附近和刮削层中的一种自然回旋运动现象。

英文摘要:

Boundary plasma physics plays an important role in tokamak confinement, but is difficult to simulate in a gyrokinetic code due to the scale-inseparable nonlocal multi-physics in magnetic separatrix and open magnetic field geometry. Neutral particles are also an important part of the boundary plasma physics. In the present paper, noble electrostatic gyrokinetic techniques to simulate the flux-driven, low-beta electrostatic boundary plasma is reported. Gyrokinetic ions and drift-kinetic electrons are utilized without scale-separation between the neoclassical and turbulence dynamics. It is found that the nonlinear intermittent turbulence is a natural gyrokinetic phenomenon in the boundary plasma in the vicinity of the magnetic separatrix surface and in the scrape-off layer.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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