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| Paper: |
Realistic Magnetohydrodynamical Simulation of Solar Local Supergranulation |
| Volume: |
454, The 3rd Hinode Science Meeting |
| Page: |
73 |
| Authors: |
Ustyugov, S. D. |
| Abstract: |
Three-dimensional numerical simulations of solar surface magnetoconvection using realistic model
physics are conducted. The thermal structure of convective motions into the upper radiative
layers of the photosphere, the main scales of convective cells and the penetration depths of
convection are investigated. We take part of the solar photosphere with size of 60×60 Mm
in horizontal direction and by depth 20 Mm from level of the visible solar surface. We use a
realistic initial model of the Sun and apply equation of state and opacities of stellar matter.
The equations of fully compressible radiation magnetohydrodynamics with dynamical viscosity
and gravity are solved. We apply:
1) Piecewise Parabolic Method on a Local Stecil (PPML) for the magnetohydrodynamics,
2) conservative method of characteristic for the radiative transfer,
3) dynamical viscosity from subgrid scale modeling.
In simulation we take uniform two-dimesional grid in gorizontal plane and nonuniform grid in vertical
direction with number of cells 600×600×204. We use 512 processors with
distributed memory multiprocessors on supercomputer MVS-100k in the Joint Computational Centre of the
Russian Academy of Sciences. |
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