GYRO Simulations of Core Momentum Transport in DIII-D and JET Plasmas

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Momentum, energy, and particle transport in DIII-D and JET ELMy H-mode plasmas is simulated with GYRO and compared with measurements analyzed using TRANSP. The simulated transport depends sensitively on the nabla(T(sub)i) turbulence drive and the nabla(E(sub)r) turbulence suppression inputs. With their nominal values indicated by measurements, the simulations over-predict the momentum and energy transport in the DIII-D plasmas, and under-predict in the JET plasmas. Reducing |nabla(T(sub)i)| and increasing |nabla(E(sub)r)| by up to 15% leads to approximate agreement (within a factor of two) for the DIII-D cases. For the JET cases, increasing |nabla(T(sub)i)| or reducing |nabla(E(sub)r)| results in approximate agreement for ... continued below

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324 Kilobytes pages

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Budny, R. V.; Candy, J. & Waltz, R. E. June 27, 2005.

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Momentum, energy, and particle transport in DIII-D and JET ELMy H-mode plasmas is simulated with GYRO and compared with measurements analyzed using TRANSP. The simulated transport depends sensitively on the nabla(T(sub)i) turbulence drive and the nabla(E(sub)r) turbulence suppression inputs. With their nominal values indicated by measurements, the simulations over-predict the momentum and energy transport in the DIII-D plasmas, and under-predict in the JET plasmas. Reducing |nabla(T(sub)i)| and increasing |nabla(E(sub)r)| by up to 15% leads to approximate agreement (within a factor of two) for the DIII-D cases. For the JET cases, increasing |nabla(T(sub)i)| or reducing |nabla(E(sub)r)| results in approximate agreement for the energy flow, but the ratio of the simulated energy and momentum flows remains higher than measurements by a factor of 2-4.

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324 Kilobytes pages

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INIS; OSTI as DE00841241

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  • Other Information: PBD: 27 Jun 2005

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  • Report No.: PPPL-4088
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/841241 | External Link
  • Office of Scientific & Technical Information Report Number: 841241
  • Archival Resource Key: ark:/67531/metadc780586

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  • June 27, 2005

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • April 15, 2016, 7:33 p.m.

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Budny, R. V.; Candy, J. & Waltz, R. E. GYRO Simulations of Core Momentum Transport in DIII-D and JET Plasmas, report, June 27, 2005; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc780586/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.