EDGE TURBULENCE SCALING WITH SHEAR-FLOW

被引：123

作者：

ZHANG, YZ

MAHAJAN, SM

机构：

[1] Institute for Fusion Studies, University of Texas at Austin, Austin

来源：

PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1992年 / 4卷 / 06期

关键词：

D O I：

10.1063/1.860095

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A formula relating turbulence levels with arbitrary shear flow is derived. When the diffusion coefficient is made a functional of the corresponding turbulence level, it is found that the scaling laws governing turbulence suppression are considerably modified. The results are compared with known formulas in various limiting cases, indicating that turbulence suppression mainly pertains in the moderate shear flow regime. The results also show that a flattened (steep) radial equilibrium gradient tends to enhance (eliminate) turbulence suppression due to the shear flow.

引用

页码：1385 / 1387

页数：3

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