Reynolds stress models of convection in convective cores
Reynolds stress models of convection in convective cores
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DOI：
10.1017/s1743921307000166
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发表时间：
2006-08
期刊：
影响因子：
--
通讯作者：
I. Roxburgh;F. Kupka
中科院分区：
文献类型：
--
作者：
I. Roxburgh;F. Kupka
摘要本文研究了球形几何中湍流对流的非局部雷诺应力模型的性质。在中心r=0处的正则性对三阶矩的行为施加约束。一些下梯度和代数闭包模型在r=0时具有不一致的行为。向下梯度和代数闭包的组合给出了一个一致的处方，可用于模拟恒星核心的对流。
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.