The internal structure of the convective envelope of the sun

Physics

Scientific paper

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Chromosphere, Convective Flow, Plasma Turbulence, Solar Interior, Solar Physics, Gravitational Effects, Magnetohydrodynamics, Plasma-Electromagnetic Interaction, Solar Rotation, Stellar Envelopes, Stellar Structure

Scientific paper

An axisymmetric hydrodynamic model of the sun consisting of a core at radiant equilibrium and a convective envelope is studied with consideration of gravitational forces, rotation, turbulence effects, and electromagnetic forces. The dimensionless parameters that control the equations of plasma motion within the sun and the boundary conditions are investigated; estimates are given for these parameters on the basis of experimental data and the existing theoretical models. Stability conditions are derived for convective equilibrium, developed cellular convection, and developed turbulent convection with consideration of rotation and turbulent Reynolds stresses. These conditions characterize the possible physical state of the matter in the convective envelope. Using estimates of the dimensionless parameters and models of some of them, a method of successive approximations is proposed for solution of the problem as a whole.

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