Physics
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.s1064c&link_type=abstract
American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #S1.064
Physics
Scientific paper
Progress is reported on simulations of electromagnetic drift-resistive ballooning turbulence in realistic single-null tokamak geometry using the BOUT three-dimensional fluid code [1] that solves Braginskii-based fluid equations [2]. The simulation domain models the actual magnetic geometry of the DIII-D tokamak. The simulations follow unstable drift-resistive ballooning turbulence in the edge region to saturation. Fluctuation amplitudes, fluctuation spectra, and particle and thermal fluxes are compared to experimental probe and beam-emission-spectroscopy data for a well-characterized L-mode discharge in DIII-D. Post-processing of the simulation data using synthetic diagnostics facilitates the comparisons. The simulations are comprised of a suite of runs in which the physics model evolves to include more fluid fields and physics terms. The relative agreement of the simulation results with the experimental data improves as more physics is included. [4pt] [1] X. Q. Xu, and R. H. Cohen, Contrib. Plasma Phys. 36 (1998) 158. [0pt] [2] S. Braginskii, ``Transport Processes in a Plasma,'' in Rev. Plas. Phys., Vol 1, ed. M. A. Leontovich (Consltnts. Bureau, New York, 1965), p. 205.
Boedo Jose
Cohen Bruce
Holland Chris
Makowski Mike
McKee George
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