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

Magnetic flux coordinates for analytic high-beta tokamak equilibria with flow

Atsushi Ito, Noriyoshi Nakajima2019年Plasma Physics and Controlled FusionIF 2.2出版社

Magnetic flux coordinates are constructed from an analytic solution (Ito and Nakajima 2009 Plasma Phys. Control. Fusion51 035007) for the reduced magnetohydrodynamics (MHD) equilibrium equations for high-beta tokamaks in the presence of poloidal and toroidal flows comparable to the poloidal sound velocity. The analytic solution indicates non-circular magnetic flux surfaces and transition between sub- and super-sonic poloidal flows. The magnetic flux coordinates for such non-circular magnetic flux surfaces are obtained for stability analysis. The flux coordinates are numerically obtained from the high order polynomial equations for the relation with the geometrical coordinates. As applications, pressure profiles in the poloidal direction on each flux surface, which become non-constant due to flow, and the flux average of the pressure are obtained. The transitions of the pressure profiles and the flux average of the pressure between sub- and super-sonic poloidal flows are discussed in relation with the radial force balance. The flux coordinates are also obtained analytically by expanding the coordinate relations with respect to the inverse aspect ratio.

日本語訳

磁気フラックス座標は、高ベータトカマクにおける縮小磁気流体力学(MHD)平衡方程式に対する解析解(Ito and Nakajima 2009 Plasma Phys. Control. Fusion51 007035)から構築される。この解析解は、ポロイダル音速に匹敵するポロイダル流およびトロイダル流の存在下での非円形磁気フラックス面と、亜音速・超音速ポロイダル流間の遷移を示す。そのような非円形磁気フラックス面に対する磁気フラックス座標は、安定性解析のために得られる。フラックス座標は、幾何学的座標との関係に関する高次多項式方程式から数値的に得られる。応用として、流れにより非一定となる各フラックス面上のポロイダル方向の圧力分布と、圧力のフラックス平均が得られる。亜音速・超音速ポロイダル流間の圧力分布と圧力のフラックス平均の遷移は、径方向力平衡との関連で議論される。フラックス座標はまた、逆アスペクト比に関して座標関係を展開することにより解析的に得られる。

wiki

Tokamak equilibria
この論文にはまだAI要約がありません。

関連論文

Extension of neoclassical rotation theory for tokamaks to realistically account for the geometry of magnetic flux surfaces

2013Nuclear Fusion

Axisymmetric two-fluid plasma equilibria with momentum sources and sinks

2011Plasma Physics and Controlled Fusion

Simulated flux-rope evolution during non-inductive startup in Pegasus

2014Plasma Physics and Controlled Fusion

Flux–force relation for non-axisymmetric tori in general flux coordinates and neoclassical toroidal plasma viscosity

2010Nuclear Fusion

Poloidal tilting symmetry of high order tokamak flux surface shaping in gyrokinetics

2016Plasma Physics and Controlled Fusion

Analytical models of axisymmetric toroidal magnetic fields withnon-circular flux surfaces

2001Plasma Physics and Controlled Fusion

Intuition for the radial penetration of flux surface shaping in tokamaks

2015Plasma Physics and Controlled Fusion

A fast, magnetics-free flux surface estimation and q-profile reconstruction algorithm for feedback control of plasma profiles

2013Plasma Physics and Controlled Fusion

Relaxed, minimum dissipation states, for a flux core spheromak sustained by helicity injection

2002Plasma Physics and Controlled Fusion

Volt-second balance with the toroidal magnetic flux based on Poynting's theorem in tokamaks

2018Nuclear Fusion