Fluid models capturing Farley–Buneman instabilities
Name
angeo-41-281-2023.pdf
Description
Published version
Size
1.86 MB
Format
Adobe PDF
Checksum (MD5)
590bef4765ad694544f7d8a46445bfdc
Author(s)
Rojas, Enrique L
Burns, Keaton J
Hysell, David L
Date Issued
July 13, 2023
Journal
Annales Geophysicae
Publisher
Copernicus GmbH
Citation
Rojas, E. L., Burns, K. J., and Hysell, D. L.: Fluid models capturing Farley–Buneman instabilities, Ann. Geophys., 41, 281–287.
Version
Final published version
Abstract
It is generally accepted that modeling Farley–Buneman instabilities requires resolving ion Landau damping to reproduce experimentally observed features. Particle-in-cell (PIC) simulations have been able to reproduce most of these but at a computational cost that severely affects their scalability. This limitation hinders the study of non-local phenomena that require three dimensions or coupling with larger-scale processes. We argue that a form of the five-moment fluid system can recreate several qualitative aspects of Farley–Buneman dynamics such as density and phase speed saturation, wave turning, and heating. Unexpectedly, these features are still reproduced even without using artificial viscosity to capture Landau damping. Comparing the proposed fluid models and a PIC implementation shows good qualitative agreement.
MIT Department
Massachusetts Institute of Technology. Department of Mathematics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.5194/angeo-41-281-2023
