
AbstractWe 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.
[PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph]
[PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph]
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