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Enrique Rojas Villalba
Public Documents
1
Fluid Models Are Probably Capable To Simulate Farley-Buneman Instabilities
Enrique Rojas Villalba
and 2 more
August 17, 2022
It is generally accepted that modeling Farley-Buneman instabilities require resolving ion Landau damping to reproduce experimentally observed nonlinear features. Particle in cell (PIC) simulations have been able to reproduce most of these, but at a computational cost that severely affects its 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 aspects of Farley-Buneman dynamics such as density and phase speed saturation, wave turning, and heating. A comparison between the proposed fluid and a kinetic model shows good qualitative agreement.