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

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

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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