Fully nonlinear δf gyrokinetics for scrape-off layer parallel transport
Abstract
Edge plasmas present a few challenges for gyrokinetic simulations that are absent in tokamak cores. Among them are large fluctuation amplitudes and plasma-wall interactions in the open field line region. In this work, the widely used core turbulence code GENE, which employs a δf-splitting technique, is extended to simulate open systems with large electrostatic fluctuations. With inclusion and proper discretization of the parallel nonlinear term, it becomes equivalent to a full-f code and the δf-splitting causes no fundamental difficulty in handling large fluctuations. The loss of particles to the wall is accounted for by using a logical sheath boundary, which is implemented in the context of a finite-volume method. The extended GENE code is benchmarked for the well-established one-dimensional parallel transport problem in the scrape-off layer during edge-localized modes. The parallel heat flux deposited onto the divertor target is compared with previous simulation results and shows good agreement.
- Authors:
-
[1];
[1];
- Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- Univ. of California, Los Angeles, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Contributing Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Princeton Univ., NJ (United States). Max-Planck-Princeton Center for Plasma Physics
- OSTI Identifier:
- 1465152
- Alternate Identifier(s):
- OSTI ID: 1328478
- Grant/Contract Number:
- SC0016073; S014889-R; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 23; Journal Issue: 10; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 43 PARTICLE ACCELERATORS; plasma gyrokinetics; turbulent flows; tokamaks; edge localized modes; plasma sheaths; boundary value problems; plasma transport properties; parallel processing; divertors; particle-in-cell method
Citation Formats
Pan, Q., Told, D., and Jenko, F. Fully nonlinear δf gyrokinetics for scrape-off layer parallel transport. United States: N. p., 2016.
Web. doi:10.1063/1.4964666.
Pan, Q., Told, D., & Jenko, F. Fully nonlinear δf gyrokinetics for scrape-off layer parallel transport. United States. https://doi.org/10.1063/1.4964666
Pan, Q., Told, D., and Jenko, F. Mon .
"Fully nonlinear δf gyrokinetics for scrape-off layer parallel transport". United States. https://doi.org/10.1063/1.4964666. https://www.osti.gov/servlets/purl/1465152.
@article{osti_1465152,
title = {Fully nonlinear δf gyrokinetics for scrape-off layer parallel transport},
author = {Pan, Q. and Told, D. and Jenko, F.},
abstractNote = {Edge plasmas present a few challenges for gyrokinetic simulations that are absent in tokamak cores. Among them are large fluctuation amplitudes and plasma-wall interactions in the open field line region. In this work, the widely used core turbulence code GENE, which employs a δf-splitting technique, is extended to simulate open systems with large electrostatic fluctuations. With inclusion and proper discretization of the parallel nonlinear term, it becomes equivalent to a full-f code and the δf-splitting causes no fundamental difficulty in handling large fluctuations. The loss of particles to the wall is accounted for by using a logical sheath boundary, which is implemented in the context of a finite-volume method. The extended GENE code is benchmarked for the well-established one-dimensional parallel transport problem in the scrape-off layer during edge-localized modes. The parallel heat flux deposited onto the divertor target is compared with previous simulation results and shows good agreement.},
doi = {10.1063/1.4964666},
journal = {Physics of Plasmas},
number = 10,
volume = 23,
place = {United States},
year = {Mon Oct 10 00:00:00 EDT 2016},
month = {Mon Oct 10 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
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- arXiv