Progress with the 5D full-F continuum gyrokinetic code COGENT
Abstract
COGENT is an Eulerian gyrokinetic code being developed for edge plasma modelling. The code is distinguished by the use of a high-order finite-volume (conservative) discretization combined with mapped multi-block grid technology. Our recent work is focused on the development of a 5D full-F COGENT version.Anumerical algorithm utilizing locally a field-aligned multi-block coordinate system is implemented to facilitate simulations of highly anisotropic microturbulence in the presence of a strong magnetic shear. In this approach, the toroidal direction is divided into blocks such that,within each block, the cells are field-aligned and a non-matching (non-conformal) grid interface is allowed at the block boundaries. In this paper we report on details of the numerical implementation and present preliminary results of verification studies performed for the case of the ion temperature gradient (ITG) instability in a sheared toroidal annulus geometry.
- Authors:
-
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1608095
- Alternate Identifier(s):
- OSTI ID: 1598370
- Report Number(s):
- LLNL-JRNL-786885
Journal ID: ISSN 0863-1042; CTPP; 983844; TRN: US2105009
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Contributions to Plasma Physics
- Additional Journal Information:
- Journal Volume: 60; Journal Issue: 5-6; Journal ID: ISSN 0863-1042
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; finite-volume methods; gyrokinetics; tokamak edge
Citation Formats
Dorf, Mikhail, and Dorr, Milo. Progress with the 5D full-F continuum gyrokinetic code COGENT. United States: N. p., 2020.
Web. doi:10.1002/ctpp.201900113.
Dorf, Mikhail, & Dorr, Milo. Progress with the 5D full-F continuum gyrokinetic code COGENT. United States. https://doi.org/10.1002/ctpp.201900113
Dorf, Mikhail, and Dorr, Milo. Wed .
"Progress with the 5D full-F continuum gyrokinetic code COGENT". United States. https://doi.org/10.1002/ctpp.201900113. https://www.osti.gov/servlets/purl/1608095.
@article{osti_1608095,
title = {Progress with the 5D full-F continuum gyrokinetic code COGENT},
author = {Dorf, Mikhail and Dorr, Milo},
abstractNote = {COGENT is an Eulerian gyrokinetic code being developed for edge plasma modelling. The code is distinguished by the use of a high-order finite-volume (conservative) discretization combined with mapped multi-block grid technology. Our recent work is focused on the development of a 5D full-F COGENT version.Anumerical algorithm utilizing locally a field-aligned multi-block coordinate system is implemented to facilitate simulations of highly anisotropic microturbulence in the presence of a strong magnetic shear. In this approach, the toroidal direction is divided into blocks such that,within each block, the cells are field-aligned and a non-matching (non-conformal) grid interface is allowed at the block boundaries. In this paper we report on details of the numerical implementation and present preliminary results of verification studies performed for the case of the ion temperature gradient (ITG) instability in a sheared toroidal annulus geometry.},
doi = {10.1002/ctpp.201900113},
journal = {Contributions to Plasma Physics},
number = 5-6,
volume = 60,
place = {United States},
year = {Wed Feb 05 00:00:00 EST 2020},
month = {Wed Feb 05 00:00:00 EST 2020}
}
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