Direct evidence of eddy breaking and tilting by edge sheared flows observed in the TEXTOR tokamak

I. Shesterikov; Y. Xu; C. Hidalgo; M. Berte; P. Dumortier; M. Van Schoor; M. Vergote; G. Van Oost

doi:10.1088/0029-5515/52/4/042004

Direct evidence of eddy breaking and tilting by edge sheared flows observed in the TEXTOR tokamak

I. Shesterikov
, Y. Xu
, C. Hidalgo
, M. Berte
, P. Dumortier
, M. Van Schoor
, M. Vergote
, G. Van Oost

Laboratorio Nacional de Fusión
University of Ghent

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

In this letter, we present direct evidence of eddy breaking and tilting events observed at the edge of the TEXTOR tokamak using a 2D gas puff imaging diagnostic. The occurrence of eddy breaking depends on the magnitude of the E _r×B flow shearing rate. The results confirm the theoretical predictions about the influence of E _r×B sheared flows in tilting and splitting turbulence eddies, and consequently, reducing the turbulent transport.

Original language	English
Article number	042004
Journal	Nuclear Fusion
Volume	52
Issue number	4
DOIs	https://doi.org/10.1088/0029-5515/52/4/042004
Publication status	Published - Apr 2012

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abstract = "In this letter, we present direct evidence of eddy breaking and tilting events observed at the edge of the TEXTOR tokamak using a 2D gas puff imaging diagnostic. The occurrence of eddy breaking depends on the magnitude of the E r×B flow shearing rate. The results confirm the theoretical predictions about the influence of E r×B sheared flows in tilting and splitting turbulence eddies, and consequently, reducing the turbulent transport.",

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AU - Shesterikov, I.

AU - Xu, Y.

AU - Hidalgo, C.

AU - Berte, M.

AU - Dumortier, P.

AU - Schoor, M. Van

AU - Vergote, M.

AU - Van Oost, G.

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AB - In this letter, we present direct evidence of eddy breaking and tilting events observed at the edge of the TEXTOR tokamak using a 2D gas puff imaging diagnostic. The occurrence of eddy breaking depends on the magnitude of the E r×B flow shearing rate. The results confirm the theoretical predictions about the influence of E r×B sheared flows in tilting and splitting turbulence eddies, and consequently, reducing the turbulent transport.

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Direct evidence of eddy breaking and tilting by edge sheared flows observed in the TEXTOR tokamak

Abstract

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