Abstract Details
Abstracts
Author: pallavi trivedi
Requested Type: Consider for Invited
Submitted: 2023-04-12 14:09:58
Co-authors: P. Trivedi, J. Dominski, S. Brunner, C. S. Chang, S. Ku, A. Scheinberg, A. Bhattacharjee
Contact Info:
princeton plasma physics laboratory
100 stellerator rd, forrestal
Princeton, NJ 08540
US
Abstract Text:
A plan to couple the core region modeled with a fixed gradient driven delta-f model and the edge region modeled with the usual XGC flux driven total-f model for simulating multiscale neoclassical-turbulent whole device plasma will be presented. This work aims to let core gradient-driven E × B turbulence flow into the edge region. This new model is implemented in a single XGC simulation and will be ported to coupled core and edge simulations [1] in the near future. This new core delta-f model the same equations than the total-f model to avoid the excitation of a spurious transient electric field [2]. Nonetheless, while employing a canonical Maxwellian and a coarse-graining procedure in the core for keeping small δf << f0 [3]. The convergence and numerical aspects of this new numerical scheme will be discussed. Preliminary results will be presented.
This work was supported by the U.S. Department of Energy under eContract No. DE-AC02- 09CH11466. Funding has been provided by the Exascale Computing Project (Grant No. 17-SC-20-SC), a collaborative effort of the U.S. Department of Energy Office of Science and the National Nuclear Security Administration.
1. J. Dominski, et al. Phys. of Plasmas 28, 022301 (2021)
2. P. Trivedi, et al. Phys. of Plasmas 29, 032301 (2022)
3. T. Vernay, et al. Phys. of Plasmas 17, 122301 (2010
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