Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...213..371s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 213, no. 1-2, April 1989, p. 371-382.
Astronomy and Astrophysics
Astrophysics
83
Benard Cells, Self Consistent Fields, Solar Atmosphere, Solar Granulation, Energy Dissipation, Hydrodynamic Equations, Radiative Transfer, Solar Spectra, Velocity Distribution
Scientific paper
The properties of a series of granular convection cells of different horizontal scale, obtained from two-dimensional numerical simulations of the solar granulation, are examined. For model diameters below approximately 2000 km, steady state solutions are obtained. It is shown that the properties of granular convection systematically depend on the horizontal scale of the granules. Results indicate that the larger granular structures have the strongest influence on the visible layers of the solar photosphere, while the smaller granules become increasingly more difficult to observe as their activity progressively disappears below the surface. It is demonstrated that details of numerical results can be largely understood in terms of 'buoyancy braking' and radiative transfer.
Kruess A.
Ludwig Hans Günter
Steffen Matthias
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