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Classical transport in nonaxisymmetric toroidal magnetic confinement geometries

A Bayliss, L F Ibanez, J T Hogan1987年Plasma Physics and Controlled FusionIF 2.2出版社

A numerical implementation of the alternating dimension algorithm for Tokamaks with ripple is presented. An explicit (Euler) method is used for the convective-diffusive system. The 1-D calculation is periodically interrupted for a new (3-D) equilibrium calculation. The transport system requires a small number of 'quasi-geometrical' coefficients obtained through the Bauer-Betancourt-Garabedian code (1978). Results are presented for the Braginskii classical transport model for the evolution of a high beta elongated Tokamak with high field ripple over the resistive skin time. The model is extended by adding the ripple-plateau coefficient for thermal diffusitivity which couples the field ripple with enhanced loss at high temperature. Preliminary results are presented for the ATE torsatron searching for the pressure and rotational transform evolution to an external current source.

日本語訳

トカマクにおけるリップルを伴う交互次元アルゴリズムの数値的実装について提示する。対流・拡散系には陽的(オイラー)法を用いる。1次元計算は、新しい3次元平衡計算のために定期的に中断される。輸送系には、Bauer-Betancourt-Garabedianコード(1978年)によって得られる少数の「準幾何学的」係数が必要である。高ベータ細長トカマクにおける高リップルを伴う抵抗性表皮時間にわたる時間発展について、Braginskii古典輸送モデルを用いた結果を示す。このモデルは、高温でのリップル増強損失と結合する熱拡散係数に対するリップル・プラトー項を追加することによって拡張される。外部電流源に対する圧力および回転変換の時間発展を探索するATEトルサトロンに関する予備的結果を示す。

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