Generation of sheared poloidal flows via Reynolds stress and transport barrier physics

被引：66

作者：

Hidalgo, C ^{[1
]}

Pedrosa, MA

Sánchez, E

Balbín, R

López-Fraguas, A

van Milligen, B

Silva, C

Fernandes, H

Varandas, CAF

Riccardi, C

Carrozza, R

Fontanesi, M

Carreras, BA

García, L

机构：

[1] CIEMAT, EURATOM Assoc, E-28040 Madrid, Spain

[2] Inst Super Tecn, EURATOM Assoc, P-1096 Lisbon, Portugal

[3] Univ Milan, I-20133 Milan, Italy

[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[5] Univ Carlos III Madrid, Madrid, Spain

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2000年 / 42卷

关键词：

D O I：

10.1088/0741-3335/42/5A/316

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A view of the latest experimental results and progress in the understanding of the role of poloidal flows driven by fluctuations via Reynolds stress is given. Reynolds stress shows a radial gradient close to the velocity shear layer location in tokamaks and stellarators, indicating that this mechanism may drive significant poloidal flows in the plasma boundary. Observation of the generation of E x B sheared flows via Reynolds stress at the ion Bernstein resonance layer has been noticed in toroidal magnetized plasmas. The experimental evidence of sheared E x B flows linked to the location of rational surfaces in stellarator plasmas might be interpreted in terms of Reynolds stress sheared driven flows. These results show that E x B sheared flows driven by fluctuations can play an important role in the generation of transport barriers.

引用

页码：A153 / A160

页数：8

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