A simulation of solar convection of supergranulation scale

Rieutord, M. and Ludwig, H.-G. and Roudier, T. and Nordlund, A. and Stein, R. (2002) A simulation of solar convection of supergranulation scale. Il nuovo cimento C, 25 (5\6). pp. 523-528. ISSN 1826-9885

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We present here numerical simulations of surface solar convection which cover a box of 30×30×3.2 Mm3 with a resolutionof 315×315×82, which is used to investigate the dynamics of scales larger than granulation. No structure resembling supergranulation is present; possibly higher Reynolds numbers (i.e. higher numerical resolution), or magnetic fields, or greater depth are necessary. The results also show interesting aspects of granular dynamics which are briefly presented, like extensive p-mode ridges inthe k-ω diagram and a ringlike distribution of horizontal vorticity around granules. At large scales, the horizontal velocity is much larger than the vertical velocity and the vertical motion is dominated by p-mode oscillations.

Item Type: Article
Additional Information: Paper presented at the International Meeting on THEMIS and the New Frontiers of Solar Atmosphere Dynamics, Rome, Italy, March 19-21, 2001.
Uncontrolled Keywords: Photosphere, granulation ; Convection, turbulence, and diffusion ; Conference proceedings
Subjects: 500 Scienze naturali e Matematica > 530 Fisica > 538 Magnetismo
Depositing User: Marina Spanti
Date Deposited: 12 Mar 2020 14:20
Last Modified: 12 Mar 2020 14:20
URI: http://eprints.bice.rm.cnr.it/id/eprint/14833

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