A Hydrodynamic Simulation of the Highly Superadiabatic Layer of the Sun

Details A Hydrodynamic Simulation of the Highly Superadiabatic Layer of the Sun A Hydrodynamic Simulation of the Highly Superadiabatic Layer of the Sun

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...496l.121k&link_type=abstract

Astrophysical Journal Letters v.496, p.L121

Astronomy and Astrophysics

Astronomy

44

Convection, Sun: Atmosphere, Sun: Interior, Turbulence

Scientific paper

To study the turbulent convection and the interaction with radiation around the highly superadiabatic layer (SAL), the fully compressible hydrodynamics equations in conservative forms and the equation of radiative transport with the generalized three-dimensional Eddington approximation have been solved, utilizing the "alternating direction implicit on staggered mesh" technique. The computational domain spanned a total of 4.4 pressure scale heights initially, which included about 2 pressure scale heights of the surface radiative zone. A total of 26.2 hr of solar surface convection has been simulated. The structure and dynamics of the layer have been explored. The main characteristics of the region around the SAL are strong horizontal flows in the radiation zone, a modification in the stratification, and overshooting into the stable region.

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