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Reynolds stress models of convection in convective cores

  • Ian W Roxburgh (a1) and Friedrich Kupka (a2)

Abstract

We investigate the properties of non-local Reynolds stress models of turbulent convection in a spherical geometry. Regularity at the centre r=0 places constraints on the behaviour of 3rd order moments. Some of the down-gradient and algebraic closure models have inconsistent behaviour at r=0. A combination of down-gradient and algebraic closures gives a consistent prescription that can be used to model convection in stellar cores.

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References

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Canuto, V. M., 1992, ApJ 392, 218
Gryanik, V. M. & Hartmann, J., 2002, J. Atmos. Sci. 59, 2729
Xiong, D. R., 1979, Acta. Astr. Sinica 20, 238
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Reynolds stress models of convection in convective cores

  • Ian W Roxburgh (a1) and Friedrich Kupka (a2)

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