Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session UT02: Tutorial: Magnetic Confinement Fusion II
2:00 PM–3:00 PM,
Thursday, October 20, 2022
Room: Ballroom 100 B
Chair: Gary Staebler, General Atomics - San Diego
Abstract: UT02.00001 : Modern Computational Methods for Fluid and Kinetic Simulations of Plasmas at (Almost) All Scales*
2:00 PM–3:00 PM
Presenter:
Ammar Hakim
(Princeton Plasma Physics Laboratory)
Author:
Ammar Hakim
(Princeton Plasma Physics Laboratory)
In the last such tutorial (P.J. Morrison, Phys. Plasma, 24 (5) 055502 2017) modern structure-preserving methods, that preserve geometric structure of the underlying equations were presented. Although these methods are very powerful for certain applications, equally powerful schemes can be constructed that take into account other properties of the system. For example, the proper exchange of kinetic and internal energy (critical for turbulence simulations), conservation of kinetic-energy or monotonic increase of entropy, positivity of the distribution function, monotonicity of the solution, etc. Often, structure preservation comes at the cost of these, equally important, physical properties. In the tutorial I will show how to determine the proper tradeoff between properties and choose and analyze schemes for an application at hand. I will conclude with a prospectus for the future, which will involve the discovery of more efficient and robust methods that run on modern hardware architectures.
*The author would like to acknowledge funding from the U.S. Department of Energy contract No. DE-AC02-09CH11466 for the Princeton Plasma Physics Laboratory, the National Science Foundation and Air-Force Office of Scientific Research.
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