Two-dimensional radiative convection in the Eddington approximation

Details Two-dimensional radiative convection in the Eddington approximation Two-dimensional radiative convection in the Eddington approximation

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.242..224e&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 242, Jan. 15, 1990, p. 224-234.

Statistics

Computation

11

Computational Astrophysics, Convective Heat Transfer, Eddington Approximation, Radiative Transfer, Stellar Envelopes, Benard Cells, Convection Currents, Multigrid Methods, Perturbation Theory, Thermal Boundary Layer

Scientific paper

A numerical study of two-dimensional convection in a system in which heat may be transported by conduction and by radiation has been undertaken. Radiative effects are treated in the Eddington approximation, the suitability of which in such a calculation is considered. An equation of transfer for the mean intensity arises and is solved using a multigrid method. At moderate values of the Rayleigh number, flows started from small initial perturbations settle into steady states with very thin thermal boundary layers and plumes at the edges of the convective cell: their presence can be explained by considering the relative magnitudes of the radiative and conductive cooling times.

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