Modeling the Near-Surface Shear Layer: Diffusion Schemes Studied With CSS

Details Modeling the Near-Surface Shear Layer: Diffusion Schemes Studied With CSS Modeling the Near-Surface Shear Layer: Diffusion Schemes Studied With CSS

2010-12-21

arxiv.org/abs/1012.4781v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, 2 figures, SOHO/GONG 2010 conference proceedings

Scientific paper

As we approach solar convection simulations that seek to model the interaction of small-scale granulation and supergranulation and even larger scales of convection within the near-surface shear layer (NSSL), the treatment of the boundary conditions and minimization of sub-grid scale diffusive processes become increasingly crucial. We here assess changes in the dynamics and the energy flux balance of the flows established in rotating spherical shell segments that capture much of the NSSL with the Curved Spherical Segment (CSS) code using two different diffusion schemes. The CSS code is a new massively parallel modeling tool capable of simulating 3-D compressible MHD convection with a realistic solar stratification in rotating spherical shell segments.

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