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A simulation of solar convection at supergranulation scale

Rieutord, M; Ludwig, Hans-Günter LU ; Roudier, T; Nordlund, A and Stein, R (2002) In Nuovo Cimento della Societa Italiana de Fisica. C, Geophysics and Space Physics 25(5-6). p.523-528
Abstract
We present here numerical simulations of surface solar convection which cover a box of 30 x 30 x 3.2 Mm(3) with a resolution of 315 x 315 x 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 in the k-w 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.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuovo Cimento della Societa Italiana de Fisica. C, Geophysics and Space Physics
volume
25
issue
5-6
pages
523 - 528
publisher
Editrice Compositori
external identifiers
  • wos:000181412800002
  • scopus:0036765990
ISSN
1124-1896
language
English
LU publication?
yes
id
8597c856-4a59-460f-9459-65611653ac10 (old id 316867)
date added to LUP
2007-11-09 08:40:17
date last changed
2017-04-16 04:12:59
@article{8597c856-4a59-460f-9459-65611653ac10,
  abstract     = {We present here numerical simulations of surface solar convection which cover a box of 30 x 30 x 3.2 Mm(3) with a resolution of 315 x 315 x 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 in the k-w 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.},
  author       = {Rieutord, M and Ludwig, Hans-Günter and Roudier, T and Nordlund, A and Stein, R},
  issn         = {1124-1896},
  language     = {eng},
  number       = {5-6},
  pages        = {523--528},
  publisher    = {Editrice Compositori},
  series       = {Nuovo Cimento della Societa Italiana de Fisica. C, Geophysics and Space Physics},
  title        = {A simulation of solar convection at supergranulation scale},
  volume       = {25},
  year         = {2002},
}