Shear flow effects on resistive ballooning turbulence

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Resistive ballooning modes could be responsible for the turbulence and induced transport observed at the edge of present tokamaks. Due to the mode structure, the geometry of the calculation is fully toroidal. The increase in computer capabilities allows now high resolution turbulence calculations. This is very important in the case of ballooning modes since the spectrum is very flat. Two main issues are addressed in this paper: (1) The validity of the mixing length approach for toroidal modes. It is especially important to identify the characteristic spatial and temporal scales in this approach, since these scales would be determinant of ... continued below

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4 p.

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Garcia, L.; Carreras, B.A. & Lynch, V.E. December 31, 1997.

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Resistive ballooning modes could be responsible for the turbulence and induced transport observed at the edge of present tokamaks. Due to the mode structure, the geometry of the calculation is fully toroidal. The increase in computer capabilities allows now high resolution turbulence calculations. This is very important in the case of ballooning modes since the spectrum is very flat. Two main issues are addressed in this paper: (1) The validity of the mixing length approach for toroidal modes. It is especially important to identify the characteristic spatial and temporal scales in this approach, since these scales would be determinant of the induced transport. (2) The role and characterization of the Reynolds stress in toroidal geometry. Because of the intrinsic poloidal asymmetry of the ballooning modes, flows with m {ne} 0 are generated. The effect of these flows will be analyzed.

Physical Description

4 p.

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INIS; OSTI as DE98001944

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  • 24. EPS conference on controlled fusion and plasma physics, Berchtesgaden (Germany), 9-13 Jun 1997

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  • Other: DE98001944
  • Report No.: ORNL/CP--95622
  • Report No.: CONF-9706131--
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 565327
  • Archival Resource Key: ark:/67531/metadc689727

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  • December 31, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Jan. 25, 2016, 12:26 p.m.

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Garcia, L.; Carreras, B.A. & Lynch, V.E. Shear flow effects on resistive ballooning turbulence, article, December 31, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc689727/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.