Computer Science – Numerical Analysis
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980japa....1..165n&link_type=abstract
Journal of Astrophysics and Astronomy, vol. 1, Dec. 1980, p. 165-175.
Computer Science
Numerical Analysis
2
Convection Currents, Magnetohydrodynamic Stability, Solar Granulation, Solar Oscillations, Solar Simulation, Stellar Envelopes, Boundary Layers, Numerical Analysis, Opacity, Prandtl Number, Propagation Modes, Radiative Transfer, Solar Atmosphere, Thermal Conductivity, Thermodynamic Equilibrium, Turbulence Effects
Scientific paper
The described investigation is a continuation of a study conducted by Antia et al. (1980). The study was an attempt to explain the observed motions on the solar surface in terms of linear convective modes excited in a realistic solar envelope model by incorporating the mechanical and thermal effects of turbulence through the eddy transport coefficients. Certain effects not taken into consideration in the earlier work are also examined. It is found that all effects in combination lead to a damping of the convective growth rates. It is concluded that considering the uncertainties in observations as well as in the mixing-length formalism, the numerical results provide a reasonable explanation for granulation and supergranulation in terms of the unstable fundamental mode and the first harmonic excited in the solar convection zone.
Chitre S. M.
Narasimha D.
Pandey Sudhir K.
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