A CASCADE MODEL FOR TURBULENT DISSIPATION IN CONVECTION-ACCRETION DISKS

被引：3

作者：

SCOTT, BD

机构：

[1] Max-Planck-Inst. F. Plasmaphysik, D8046 Garching bei München

来源：

ASTROPHYSICAL JOURNAL | 1990年 / 357卷 / 02期

关键词：

Accretion; Convection; Instabilities; Rotation; Turbulence;

D O I：

10.1086/185764

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A cascade model for driven, quasi-steady fluid turbulence is applied to calculation of the dissipation parameter, α, for a convection-accretion disk. The mode analysis is nonlocal in the vertical direction and allows arbitrary rotation curves. Nonaxisymmetric modes, nonlinear mode structure, and turbulent cascade dynamics are all treated. It is shown that proper respect of these features leads to a much larger value of α than would be the case in their neglect.

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页码：L53 / L56

页数：4

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