A new approach to turbulent transport of a mean scalar

被引：51

作者：

Blackman, EG ^{[1
]}

Field, GB

机构：

[1] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

[2] Univ Rochester, Laser Energet Lab, Rochester, NY 14627 USA

[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

PHYSICS OF FLUIDS | 2003年 / 15卷 / 11期

关键词：

D O I：

10.1063/1.1613281

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We develop a simple mean field approach to the transport of a passive scalar for which the fundamental equation is a second order differential equation in the transported quantity, not a first order equation. Triple correlations are included, as they must be for any realistic description of turbulence. No correlation time enters the theory, only an eddy turnover time. The approach is simpler than standard approaches which incorporate triple correlations, but more realistic than Gaussian or short correlation time closures which do not. A similar approach has proven useful in magnetohydrodynamics. (C) 2003 American Institute of Physics.

引用

页码：L73 / L76

页数：4

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