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Shear Driven Turbulence and Coherent Structures in Solar Surface Simulations

Published online by Cambridge University Press:  01 April 2008

F. Kupka
F. Kupka*
Affiliation:
Max-Planck-Institute for Astrophysics, Karl-Schwarzschild Str. 1, D-85748 Garching, Germany email: [email protected]
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Abstract

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Numerical simulations of convection near the solar surface are now advanced enough to reproduce both a large set of observational data and provide tests for convection models. We discuss the role of coherent structures in models of solar p-mode excitation, for which the analysis of numerical simulations has provided key inputs in the modelling. The robustness of these simulations is shown by a comparison illustrating the influence of boundary conditions on ensemble averaged quantities. In a concluding example advanced high resolution simulations are shown to resolve the onset of shear driven turbulence generated by up- and downflow structures.

Keywords

ConvectionturbulenceSun: interiorSun: granulationSun: helioseismology
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 451 - 461
Copyright
Copyright © International Astronomical Union 2008

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