FusionPapers
図版検索トレンドwiki日本の研究
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Simulation of zonal flow excitation by drift mode turbulence: applications to tokamaks and the magnetopause

R M G M Trines, R Bingham, M W Dunlop, A Vaivads, J A Davies, L O Silva, J T Mendonça, P K Shukla2008年Plasma Physics and Controlled FusionIF 2.2出版社

Recently, we investigated the interaction between broadband drift mode turbulence and zonal flows near the edge of a region of magnetized plasma (Trines et al 2005 Phys. Rev. Lett.94 165002). Our simulation results showed the development of a zonal flow through the modulational instability of the drift wave distribution, as well as the existence of solitary zonal flow structures about an ion gyroradius wide, drifting towards steeper relative density gradients. Both the growth rate of the turbulence and the particle/energy transport across the plasma boundary can be stabilized by adjusting the plasma density gradient. This spontaneous formation of solitary wave structures has also been found in Cluster satellite observations (Trines et al 2007 Phys. Rev. Lett.99 205006), confirming our earlier theoretical predictions. We will discuss the consequences of our results for our understanding of the Earth's magnetopause, as well as for the study of zonal flows in tokamaks.

日本語訳

最近、我々は磁化プラズマの端付近における広帯域ドリフトモード乱流と帯状流の相互作用を調査した(Trines et al 2005 Phys. Rev. Lett.94 165002)。我々のシミュレーション結果は、ドリフト波分布の変調不安定性を通じた帯状流の発達と、イオンジャイロ半径程度の幅を持つ孤立した帯状流構造が相対密度勾配のより急峻な方向へ漂移することを示した。乱流の成長率とプラズマ境界を横切る粒子・熱輸送は、プラズマ密度勾配を調整することによって安定化できる。この孤立波構造の自発的形成は、Cluster衛星観測(Trines et al 2007 Phys. Rev. Lett.99 205006)においても発見され、我々の理論的予測を裏付けるものであった。我々は、これらの結果が地球の磁気圏界面の理解、ならびにトカマクにおける帯状流の研究に対して持つ意義について議論する。

wiki

Zonal flow
この論文にはまだAI要約がありません。

関連論文

Finite ion Larmour radius effects in the problem of zonal flow generation by kinetic drift-Alfvén turbulence

2004Plasma Physics and Controlled Fusion

Non-linear zonal dynamics of drift and drift-Alfvén turbulence in tokamak plasmas

2001Nuclear Fusion

Generation of zonal perturbations and transport barriers in plasmas

2011Nuclear Fusion

Numerical simulations of collisional drift-wave turbulence in a magnetized plasma column

2007Plasma Physics and Controlled Fusion

A review of zonal flow experiments

2009Nuclear Fusion

Nonlinear competition of turbulent structures and improved confinement in magnetized cylindrical plasmas

2014Nuclear Fusion

Zonal flows in plasma—a review

2005Plasma Physics and Controlled Fusion

Effects of plasma current on nonlinear interactions of ITG turbulence, zonal flows and geodesic acoustic modes

2006Plasma Physics and Controlled Fusion

On how fast ions enhance the regulation of drift wave turbulence by zonal flows

2024Nuclear Fusion

GAM generation by drift waves in JIPP T-llU tokamak core plasmas

2010Nuclear Fusion