Comparisons and physics basis of tokamak transport models and turbulence simulations

A. M. Dimits, G. Bateman, Michael Beer, B. I. Cohen, W. Dorland, G. W. Hammett, C. Kim, J. E. Kinsey, M. Kotschenreuther, A. H. Kritz, L. L. Lao, J. Mandrekas, W. M. Nevins, S. E. Parker, A. J. Redd, D. E. Shumaker, R. Sydora, J. Weiland

Research output: Contribution to journalArticle

Abstract

The predictions of gyrokinetic and gyrofluid simulations of ion-temperature-gradient (ITG) instability and turbulence in tokamak plasmas as well as some tokamak plasma thermal transport models, which have been widely used for predicting the performance of the proposed International Thermonuclear Experimental Reactor (ITER) tokamak [Plasma Physics and Controlled Nuclear Fusion Research, 1996 (International Atomic Energy Agency, Vienna, 1997), Vol. 1, p. 3], are compared. These comparisons provide information on effects of differences in the physics content of the various models and on the fusion-relevant figures of merit of plasma performance predicted by the models. Many of the comparisons are undertaken for a simplified plasma model and geometry which is an idealization of the plasma conditions and geometry in a Doublet III-D [Plasma Physics and Controlled Nuclear Fusion Research, 1986 (International Atomic Energy Agency, Vienna, 1987), Vol. 1, p. 159] high confinement (H-mode) experiment. Most of the models show good agreements in their predictions and assumptions for the linear growth rates and frequencies. There are some differences associated with different equilibria. However, there are significant differences in the transport levels between the models. The causes of some of the differences are examined in some detail, with particular attention to numerical convergence in the turbulence simulations (with respect to simulation mesh size, system size and, for particle-based simulations, the particle number). The implications for predictions of fusion plasma performance are also discussed.

Original languageEnglish (US)
Pages (from-to)969-983
Number of pages15
JournalPhysics of Plasmas
Volume7
Issue number3
StatePublished - Mar 2000
Externally publishedYes

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turbulence
physics
simulation
plasma physics
nuclear energy
nuclear fusion
predictions
fusion
thermal plasmas
ion temperature
geometry
figure of merit
mesh
temperature gradients
reactors
causes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

Dimits, A. M., Bateman, G., Beer, M., Cohen, B. I., Dorland, W., Hammett, G. W., ... Weiland, J. (2000). Comparisons and physics basis of tokamak transport models and turbulence simulations. Physics of Plasmas, 7(3), 969-983.

Comparisons and physics basis of tokamak transport models and turbulence simulations. / Dimits, A. M.; Bateman, G.; Beer, Michael; Cohen, B. I.; Dorland, W.; Hammett, G. W.; Kim, C.; Kinsey, J. E.; Kotschenreuther, M.; Kritz, A. H.; Lao, L. L.; Mandrekas, J.; Nevins, W. M.; Parker, S. E.; Redd, A. J.; Shumaker, D. E.; Sydora, R.; Weiland, J.

In: Physics of Plasmas, Vol. 7, No. 3, 03.2000, p. 969-983.

Research output: Contribution to journalArticle

Dimits, AM, Bateman, G, Beer, M, Cohen, BI, Dorland, W, Hammett, GW, Kim, C, Kinsey, JE, Kotschenreuther, M, Kritz, AH, Lao, LL, Mandrekas, J, Nevins, WM, Parker, SE, Redd, AJ, Shumaker, DE, Sydora, R & Weiland, J 2000, 'Comparisons and physics basis of tokamak transport models and turbulence simulations', Physics of Plasmas, vol. 7, no. 3, pp. 969-983.
Dimits AM, Bateman G, Beer M, Cohen BI, Dorland W, Hammett GW et al. Comparisons and physics basis of tokamak transport models and turbulence simulations. Physics of Plasmas. 2000 Mar;7(3):969-983.
Dimits, A. M. ; Bateman, G. ; Beer, Michael ; Cohen, B. I. ; Dorland, W. ; Hammett, G. W. ; Kim, C. ; Kinsey, J. E. ; Kotschenreuther, M. ; Kritz, A. H. ; Lao, L. L. ; Mandrekas, J. ; Nevins, W. M. ; Parker, S. E. ; Redd, A. J. ; Shumaker, D. E. ; Sydora, R. ; Weiland, J. / Comparisons and physics basis of tokamak transport models and turbulence simulations. In: Physics of Plasmas. 2000 ; Vol. 7, No. 3. pp. 969-983.
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