Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.176..103k&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 176, July 1976, p. 103-129.
Astronomy and Astrophysics
Astronomy
29
Atmospheric Circulation, Atmospheric Turbulence, Binary Stars, Radiative Heat Transfer, Stellar Atmospheres, Atmospheric Models, Incident Radiation, Partial Differential Equations, Richardson Number, Surface Layers
Scientific paper
In general, the mutual heating of components in a close binary system gives rise to rapid motions in their atmospheres. A simple model of this circulation is constructed, assuming axial symmetry and treating the incident radiation as a perturbation. The flow speeds decrease exponentially with optical depth, but are unrealistically high near the surface if the flow is taken to be laminar. A shear-flow instability gives rise to a turbulent surface layer, for which an order-of-magnitude model is constructed. It is pointed out that radiative cooling may have a major influence on the structure of the turbulent shear flow and that the turbulence may be much weaker than suggested in an earlier paper on rotationally driven circulation.
Kirbiyik Halýl
Smith Christopher R.
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