WFRF:(Alho M.)
Search: WFRF:(Alho M.) > (2020-2022) > Sub-grid modeling o...
- 3 of 5
- Previous record
- Next record
- To hitlist
Sub-grid modeling of pitch-angle diffusion for ion-scale waves in hybrid-Vlasov simulations with Cartesian velocity space
-
- Dubart, M. (author)
- Univ Helsinki, Dept Phys, POB 68, Uusimaa 00014, Finland.
-
- Battarbee, M. (author)
- Univ Helsinki, Dept Phys, POB 68, Uusimaa 00014, Finland.
-
- Ganse, U. (author)
- Univ Helsinki, Dept Phys, POB 68, Uusimaa 00014, Finland.
- show more...
- show less...
- Univ Helsinki, Dept Phys, POB 68, Uusimaa 00014, Finland Heidelberg Univ, Inst Theoret Astrophys, Ctr Astron, D-69120 Heidelberg, Germany. (creator_code:org_t)
- American Institute of Physics (AIP), 2022
- 2022
- English.
- In: Physics of Plasmas. - : American Institute of Physics (AIP). - 1070-664X .- 1089-7674. ; 29:10
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Numerical simulations have grown to play a central role in modern sciences over the years. The ever-improving technology of supercomputers has made large and precise models available. However, this accuracy is often limited by the cost of computational resources. Lowering the simulation's spatial resolution in order to conserve resources can lead to key processes being unresolved. We have shown in a previous study how insufficient spatial resolution of the proton cyclotron instability leads to a misrepresentation of ion dynamics in hybrid-Vlasov simulations. This leads to larger than expected temperature anisotropy and loss-cone shaped velocity distribution functions. In this study, we present a sub-grid numerical model to introduce pitch-angle diffusion in a 3D Cartesian velocity space, at a spatial resolution where the relevant wave-particle interactions were previously not correctly resolved. We show that the method is successfully able to isotropize loss-cone shaped velocity distribution functions, and that this method could be applied to simulations in order to save computational resources and still correctly model wave-particle interactions.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Physics of Plasmas (Search for host publication in LIBRIS)
To the university's database
- 3 of 5
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Dubart, M.
- Battarbee, M.
- Ganse, U.
- Osmane, A.
- Spanier, F.
- Suni, J.
- show more...
- Johlander, Andre ...
- Alho, M.
- Bussov, M.
- Cozzani, G.
- George, H.
- Grandin, M.
- Horaites, K.
- Papadakis, K.
- Pfau-Kempf, Y.
- Tarvus, V.
- Turc, L.
- Zaitsev, I.
- Zhou, H.
- Palmroth, M.
- show less...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- and Fusion Plasma an ...
- Articles in the publication
- Physics of Plasm ...
- By the university
- Uppsala University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
