Validation Studies of Gyrofluid and Gyrokinetic Predictions of Transport and Turbulence Stiffness Using the DIII-D Tokamak (Articolo in rivista)

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  • Validation Studies of Gyrofluid and Gyrokinetic Predictions of Transport and Turbulence Stiffness Using the DIII-D Tokamak (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0029-5515/53/8/083027 (literal)
Alternative label
  • Holland, C [ 1 ] ; Kinsey, JE [ 2 ] ; DeBoo, JC [ 2 ] ; Burrell, KH [ 2 ] ; Luce, TC [ 2 ] ; Smith, SP [ 2 ] ; Petty, CC [ 2 ] ; White, AE [ 3 ] ; Rhodes, TL [ 4,5 ] ; Schmitz, L [ 4,5 ] ; Doyle, EJ [ 4,5 ] ; Hillesheim, JC [ 6 ] ; McKee, GR [ 7 ] ; [ 7 ] ; Wang, G [ 4,5 ] ; Zeng, L [ 4,5 ] ; Grierson, BA [ 8 ] ; Marinoni, A [ 3 ] ; Mantica, P [ 9 ] ; Snyder, PB [ 2 ] ; Waltz, RE [ 2 ] ; Staebler, GM [ 2 ] ; Candy, J [ 2 ] (2013)
    Validation Studies of Gyrofluid and Gyrokinetic Predictions of Transport and Turbulence Stiffness Using the DIII-D Tokamak
    in Nuclear fusion (Online); IOP Publishing Ltd. (Institute of Physics Publishing Ltd), "Bristol ; London" (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Holland, C [ 1 ] ; Kinsey, JE [ 2 ] ; DeBoo, JC [ 2 ] ; Burrell, KH [ 2 ] ; Luce, TC [ 2 ] ; Smith, SP [ 2 ] ; Petty, CC [ 2 ] ; White, AE [ 3 ] ; Rhodes, TL [ 4,5 ] ; Schmitz, L [ 4,5 ] ; Doyle, EJ [ 4,5 ] ; Hillesheim, JC [ 6 ] ; McKee, GR [ 7 ] ; [ 7 ] ; Wang, G [ 4,5 ] ; Zeng, L [ 4,5 ] ; Grierson, BA [ 8 ] ; Marinoni, A [ 3 ] ; Mantica, P [ 9 ] ; Snyder, PB [ 2 ] ; Waltz, RE [ 2 ] ; Staebler, GM [ 2 ] ; Candy, J [ 2 ] (literal)
Pagina inizio
  • 083027 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0029-5515/53/8/083027/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 53 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA [ 2 ] Gen Atom Co, San Diego, CA 92186 USA [ 3 ] MIT, Cambridge, MA 02139 USA [ 4 ] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA [ 5 ] Univ Calif Los Angeles, PSTI, Los Angeles, CA 90095 USA [ 6 ] Culham Sci Ctr, EURATOM CCFE Fus Assoc, Abingdon OX14 3DB, Oxon, England [ 7 ] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA [ 8 ] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA [ 9 ] Assoc Euratom ENEA CNR, Ist Fis Plasma P Caldirola, Milan, Italy (literal)
Titolo
  • Validation Studies of Gyrofluid and Gyrokinetic Predictions of Transport and Turbulence Stiffness Using the DIII-D Tokamak (literal)
Abstract
  • A series of carefully designed validation experiments conducted on DIII-D to rigorously test gyrofluid and gyrokinetic predictions of transport and turbulence stiffness in both the ion and electron channels have provided an improved assessment of the experimental fidelity of those models over a range of plasma parameters. The first set of experiments conducted was designed to test predictions of H-mode core transport stiffness at fixed pedestal density and temperature. In low triangularity lower single null plasmas, a factor of 3 variation in neutral beam injection (NBI) heating was obtained, with modest changes to pedestal conditions that slowly increased with applied heating. The measurements and trends with increased NBI heating at both low and high injected torque are generally well-reproduced by the quasilinear trapped gyro-Landau fluid (TGLF) transport model at the lowest heating levels, but with decreasing fidelity (particularly in the electron profiles) as the heating power is increased. Complementing these global stiffness studies, a second set of experiments was performed to quantify the relationship between the local electron energy flux Q(e) and electron temperature gradient by varying the deposition profile of electron cyclotron heating about a specified reference radius in low density, low current L-mode plasmas. Modelling of these experiments using both the TGLF model and the nonlinear gyrokinetic GYRO code yields systematic underpredictions of the measured fluxes and fluctuation levels. (literal)
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