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Free-boundary MHD-equilibria in axisymmetric tori

Y. Suzuki1974年被引用 30Nuclear FusionIF 3出版社

A method of numerical computation is presented in order to obtain equilibrium configurations in axisymmetric tori with ideally conductive shells of arbitrary cross-sections and/or with control-field coils. In this method, an artificial function S(ψ) is introduced, which makes it possible to combine the equilibrium equations in the plasma and the equation for the vacuum into one equation. The alternating-direction implicit method coupled with the Marder-Weitzner iteration scheme is used to solve the combined equilibrium equation under the boundary condition given on the shell. The continuity conditions at the plasma-vacuum interface are automatically satisfied in the solutions obtained. Some results of the computation are illustrated for cases where the shell shapes are of circular, square, rectangular and finger-ring type, respectively, and for a case with a ring coil placed inside the square shell.

日本語訳

軸対称トーラスにおいて、任意断面形状の完全導体シェルおよび/または制御磁場コイルを有する場合の平衡配位を得るための数値計算法を提示する。本手法では、人工関数S(ψ)を導入し、プラズマ内の平衡方程式と真空領域の方程式を一つの方程式に結合することを可能にする。結合された平衡方程式を、シェル上で与えられる境界条件の下で解くために、Marder-Weitzner反復スキームと組み合わせた交互方向陰解法を用いる。プラズマ・真空界面における連続条件は、得られた解において自動的に満たされる。シェル形状がそれぞれ円形、正方形、長方形、および指輪型の場合、ならびに正方形シェル内部にリングコイルを配置した場合について、計算結果の一部を示す。

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Magnetohydrodynamics
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