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Computational study of ITER-like dissipative divertor plasmas in the collisional limit

D.A. Knoll1998年被引用 5Nuclear FusionIF 3出版社

A two dimensional (2-D) combined edge plasma/Navier-Stokes neutral transport model is used in a computational study of dissipative divertor plasmas in the collisional limit for neutrals, with ITER-like plasma conditions and scale lengths. The neutral model contains three momentum equations that are coupled to the plasma through ionization, recombination and ion-neutral elastic collisions. The neutral transport coefficients are evaluated including both ion-neutral and neutral-neutral collisions. The structure of fully detached plasma solutions is studied for ITER plasma conditions. These detached solutions are obtained through a combination of impurity radiation, from a simplified impurity model, and neutral flow baffling. Solution sensitivities are elucidated to: (a) baffle location, (b) upstream plasma density and Lyman-α opacity, (c) volume recombination and (d) neutral-neutral collisions.

日本語訳

二次元(2-D)結合エッジプラズマ/ナビエ・ストークス中性粒子輸送モデルを、ITER類似のプラズマ条件および長さスケールにおける、中性粒子の衝突極限での散逸ダイバータプラズマの計算研究に用いる。中性粒子モデルは、電離、再結合、およびイオン・中性粒子弾性衝突を通じてプラズマと結合する3つの運動量方程式を含む。中性粒子輸送係数は、イオン・中性粒子衝突と中性粒子・中性粒子衝突の両方を含めて評価される。完全に非接触(デタッチ)したプラズマ解の構造が、ITERプラズマ条件に対して研究される。これらのデタッチ解は、簡略化された不純物モデルによる不純物放射と、中性粒子流束バッフリングの組み合わせによって得られる。解の感度が、以下のパラメータに対して解明される:(a)バッフル位置、(b)上流プラズマ密度とライマンα不透明度、(c)体積再結合、および(d)中性粒子・中性粒子衝突。

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iter高精度(タイトル一致)

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