The belongings of radiation and velocity slip on MHD stream melting warmth transmission a micropolar liquid over an exponentially stretched sheet which is fixed in porous medium with heat source/sink are accessible. Homothety transforms the major PDE into set non-linear ODE. Then, by varying boundary value problem to initial first, we get numerical solution system equations. It has been observe...

A convection-driven MHD dynamo in a rotating spherical shell, with clearly defined structural elements in the flow and magnetic field, is simulated numerically. Such dynamos can be called deterministic, in contrast to those explicitly dependent on the assumed properties of turbulence. The cases most interesting from the standpoint of studying the nature of stellar magnetism demonstrate the foll...

This paper offers the first coherent picture of the interactions between convection and magnetic fields that lead to the formation of the complicated filamentary structure of a sunspot penumbra. Recent observations have revealed the intricate interlocking-comb structure of the penumbral magnetic field. Some field lines, with associated Evershed outflows, plunge below the solar surface near the ...