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Orb5: A global electromagnetic gyrokinetic code using the PIC approach in toroidal geometry
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(2020) Orb5: A global electromagnetic gyrokinetic code using the PIC approach in toroidal geometry. Computer Physics Communications, 251 . 107072. doi:10.1016/j.cpc.2019.107072
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WRAP-ORB5-global-electromagnetic-gyrokinetic-code-geometry-2020.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (2404Kb) | Preview |
Official URL: https://doi.org/10.1016/j.cpc.2019.107072
Abstract
This paper presents the current state of the global gyrokinetic code Orb5 as an update of the previous reference (Jolliet et al., 2007). The Orb5 code solves the electromagnetic Vlasov-Maxwell system of equations using a PIC scheme and also includes collisions and strong flows. The code assumes multiple gyrokinetic ion species at all wavelengths for the polarization density and drift-kinetic electrons. Variants of the physical model can be selected for electrons such as assuming an adiabatic response or a “hybrid” model in which passing electrons are assumed adiabatic and trapped electrons are drift-kinetic. A Fourier filter as well as various control variates and noise reduction techniques enable simulations with good signal-to-noise ratios at a limited numerical cost. They are completed with different momentum and zonal flow-conserving heat sources allowing for temperature-gradient and flux-driven simulations. The code, which runs on both CPUs and GPUs, is well benchmarked against other similar codes and analytical predictions, and shows good scalability up to thousands of nodes.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
| SWORD Depositor: | Library Publications Router | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Tokamaks, Plasma turbulence, Physics -- Computer programs | ||||||||||||
| Journal or Publication Title: | Computer Physics Communications | ||||||||||||
| Publisher: | Elsevier | ||||||||||||
| ISSN: | 0010-4655 | ||||||||||||
| Official Date: | June 2020 | ||||||||||||
| Dates: |
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| Volume: | 251 | ||||||||||||
| Article Number: | 107072 | ||||||||||||
| DOI: | 10.1016/j.cpc.2019.107072 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
| RIOXX Funder/Project Grant: |
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