Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...118....1s&link_type=abstract
Astronomy and Astrophysics, vol. 118, no. 1, Feb. 1983, p. 1-3.
Astronomy and Astrophysics
Astrophysics
3
Convective Flow, Meridional Flow, Solar Rotation, Temperature Gradients, Adiabatic Flow, Kinetic Energy, Turbulent Flow, Viscosity
Scientific paper
The authors argue that the effect of rotation should be neglected when the convection velocity is estimated through a comparison of the kinetic energy with the work done by the superadiabatic temperature gradient. A recent model of the Sun's differential rotation by Durney (1981) would thus not be restricted to small rates of rotation. The authors present a simple model where convection cells elongated in north-south direction are simulated by means of an anisotropic turbulent viscosity tensor. The resulting mean flow has equatorial acceleration, as observed on the Sun, with negligible concomitant meridional circulation and pole-equator temperature difference.
Schmidt Wolfram
Stix Michael
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