2009/12/10 by M. Barnes, Ian Abel, I. G. Abel +5 · 2 citations
Mathematics · Physics and Astronomy · #ASDEX Upgrade #Code (set theory) #Computational fluid dynamics #Computer science #Coupling (piping) #Grid #Gyrokinetics #Ionosphere and magnetosphere dynamics #Laser-Plasma Interactions and Diagnostics #Magnetic confinement fusion research #Materials science #Mathematics #Mechanics #Nonlinear system #Nuclear physics #Physics #Plasma #Solver #Statistical physics #Tokamak #Turbulence #physics.plasm-ph
paper · pdf · doi:10.1063/1.3323082
12 pages, 13 figures, invited paper for 2009 APS-DPP meeting, submitted to Phys. Plasmas
arxiv created 2009/12/10 · openalex publication_date 2010/04/01 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Direct coupling between a transport solver and local, nonlinear gyrokinetic calculations using the multiscale gyrokinetic code TRINITY [M. Barnes, “TRINITY: A unified treatment of turbulence, transport, and heating in magnetized plasmas,” Ph.D. thesis, University of Maryland, 2008 (eprint arXiv:0901.2868)] is described. The coupling of the microscopic and macroscopic physics is done within the framework of multiscale gyrokinetic theory, of which we present the assumptions and key results. An assumption of scale separation in space and time allows for the simulation of turbulence in small regions of the space-time grid, which are embedded in a coarse grid on which the transport equations are implicitly evolved. This leads to a reduction in computational expense of several orders of magnitude, making first-principles simulations of the full fusion device volume over the confinement time feasible on current computing resources. Numerical results from TRINITY simulations are presented and compared with experimental data from JET [M. Keilhacker, Plasma Phys. Controlled Fusion 41, B1 (1999)] and ASDEX Upgrade [O. Gruber, Nucl. Fusion 47, S622 (2007)] plasmas.