Comparison of theory-based and semi-empirical transport modelling in JET plasmas with ITBs

Tuomas Tala, V. Parail, A. Becoulet, G. Corrigan, D. Heading, Mervi Mantsinen, P. Strand

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

The theory-based Weiland transport model has been applied to JET discharges with internal transport barriers (ITBs) for the first time. The agreement of the modelling results with the experiments has been found to be comparable with the agreement of the modelling results produced by the semi-empirical Bohm/gyro-Bohm transport model. Weiland model overestimates the width of the ITB and the electron temperature. There is evidence that the density gradient in the Weiland model plays a more important role in governing the ITB formation dynamics for JET discharges than the suppression of turbulence by the E*B flow shearing rate.
Original languageEnglish
Pages (from-to)A495-A500
JournalPlasma Physics and Controlled Fusion
Volume44
Issue number5A
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Fingerprint

Plasmas
Electron temperature
shearing
Shearing
Discharge (fluid mechanics)
Turbulence
turbulence
retarding
electron energy
gradients
Experiments

Keywords

  • JET
  • plasma
  • internal transport barriers
  • fusion energy
  • fusion reactors

Cite this

Tala, Tuomas ; Parail, V. ; Becoulet, A. ; Corrigan, G. ; Heading, D. ; Mantsinen, Mervi ; Strand, P. / Comparison of theory-based and semi-empirical transport modelling in JET plasmas with ITBs. In: Plasma Physics and Controlled Fusion. 2002 ; Vol. 44, No. 5A. pp. A495-A500.
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abstract = "The theory-based Weiland transport model has been applied to JET discharges with internal transport barriers (ITBs) for the first time. The agreement of the modelling results with the experiments has been found to be comparable with the agreement of the modelling results produced by the semi-empirical Bohm/gyro-Bohm transport model. Weiland model overestimates the width of the ITB and the electron temperature. There is evidence that the density gradient in the Weiland model plays a more important role in governing the ITB formation dynamics for JET discharges than the suppression of turbulence by the E*B flow shearing rate.",
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author = "Tuomas Tala and V. Parail and A. Becoulet and G. Corrigan and D. Heading and Mervi Mantsinen and P. Strand",
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Tala, T, Parail, V, Becoulet, A, Corrigan, G, Heading, D, Mantsinen, M & Strand, P 2002, 'Comparison of theory-based and semi-empirical transport modelling in JET plasmas with ITBs', Plasma Physics and Controlled Fusion, vol. 44, no. 5A, pp. A495-A500. https://doi.org/10.1088/0741-3335/44/5A/355

Comparison of theory-based and semi-empirical transport modelling in JET plasmas with ITBs. / Tala, Tuomas; Parail, V.; Becoulet, A.; Corrigan, G.; Heading, D.; Mantsinen, Mervi; Strand, P.

In: Plasma Physics and Controlled Fusion, Vol. 44, No. 5A, 2002, p. A495-A500.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Comparison of theory-based and semi-empirical transport modelling in JET plasmas with ITBs

AU - Tala, Tuomas

AU - Parail, V.

AU - Becoulet, A.

AU - Corrigan, G.

AU - Heading, D.

AU - Mantsinen, Mervi

AU - Strand, P.

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AB - The theory-based Weiland transport model has been applied to JET discharges with internal transport barriers (ITBs) for the first time. The agreement of the modelling results with the experiments has been found to be comparable with the agreement of the modelling results produced by the semi-empirical Bohm/gyro-Bohm transport model. Weiland model overestimates the width of the ITB and the electron temperature. There is evidence that the density gradient in the Weiland model plays a more important role in governing the ITB formation dynamics for JET discharges than the suppression of turbulence by the E*B flow shearing rate.

KW - JET

KW - plasma

KW - internal transport barriers

KW - fusion energy

KW - fusion reactors

U2 - 10.1088/0741-3335/44/5A/355

DO - 10.1088/0741-3335/44/5A/355

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JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

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