COMMUNICATIONS / MITTEILUNGEN
I.K. Csada
On the Stationary and Periodical Motions in the Atmosphere of the Sun
No. 19
Budapest, 1948
Abstract
The present paper applies the turbulence-theory to the
stationary and periodical motions in the atmosphere of the sun. In the
introductory passage the author has summarized the problems of thermodynamical
and mechanical instability connected with the 11 years' period
of the solar activity and with the granular structure of the photosphere.
The second part contains Taylor-Prandtl's equations of the turbulent
motions. The third part contains a model relating to large-scale currents
in the photosphere; from this the coefficient of exchange (i. e. eddy
diffusivity) characteristic of the turbulent state may be calculated on the
one hand, and conclusions relating to the periodical changes in the
distribution of angular velocity may be drawn on the other hand. The
period is approximately equal to the period of solar activity.
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