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

Flow shear suppression of pedestal ion temperature gradient turbulence-A first principles theoretical framework

D R Hatch, R D Hazeltine, M K Kotschenreuther, S M Mahajan2018年Plasma Physics and Controlled FusionIF 2.2出版社

A combined analytic and computational gyrokinetic approach is developed to address the question of the scaling of an important class of pedestal turbulent transport with arbitrary levels of E × B shear. Due to strong gradients and shaping in the pedestal, the ion temperature gradient driven instabilities of interest are not curvature-driven like typical core instabilities. By extensive numerical (gyrokinetic) simulations, it is demonstrated that pedestal modes respond to shear suppression very much like the predictions of a basic analytic decorrelation theory. The quantitative agreement between the two provides us with a new, first principles (physics-based) theoretical framework for pedestal shear suppression in regimes ranging from present-day experiments to future burning plasmas that lie in low shear regimes.

日本語訳

ペデスタル乱流輸送の重要なクラスのスケーリングを、任意のレベルのE×Bシアのもとで扱うために、解析的および計算的ジャイロ運動論を組み合わせたアプローチを開発する。ペデスタルにおける強い勾配と形状効果のため、対象となるイオン温度勾配駆動不安定性は、典型的なコア不安定性のように曲率駆動ではない。広範な数値(ジャイロ運動論的)シミュレーションにより、ペデスタルモードは、基本的な解析的デコリレーション理論の予測と非常によく一致する形でシア抑制に応答することが実証された。両者の定量的一致は、現在の実験から低シア領域にある将来の燃焼プラズマに至るまでの領域におけるペデスタルシア抑制のための、新しい第一原理(物理ベース)の理論的枠組みを提供する。

wiki

PedestalIon temperature gradientFlow shearTemperature gradient turbulence
この論文にはまだAI要約がありません。

関連論文

Nature of turbulent transport across sheared zonal flows: insights from gyrokinetic simulations

2011Plasma Physics and Controlled Fusion

Measurements and simulations of low-wavenumber pedestal turbulence in the National Spherical Torus Experiment

2013Nuclear Fusion

Simulation of ion temperature gradient turbulence in tokamaks

2000Nuclear Fusion

Numerical and theoretical studies of turbulence and transport with E × B shear flows

2000Nuclear Fusion

The effect of background flow shear on gyrokinetic turbulence in the cold ion limit

2019Plasma Physics and Controlled Fusion

Global turbulence features across marginality and non-local pedestal-core interactions

2019Plasma Physics and Controlled Fusion

Electromagnetic effects in the stabilization of turbulence by sheared flow

2014Plasma Physics and Controlled Fusion

Gyrokinetic simulations of spherical tokamaks

2009Plasma Physics and Controlled Fusion

Improved understanding of physics processes in pedestal structure, leading to improved predictive capability for ITER

2013Nuclear Fusion

Understanding the effect of sheared flow on microinstabilities

2010Plasma Physics and Controlled Fusion