Scaling laws in two-dimensional turbulent convection

被引：13

作者：

Biskamp, D ^{[1
]}

Hallatschek, K ^{[1
]}

Schwarz, E ^{[1
]}

机构：

[1] Max Planck Inst Plasma Phys, Ctr Interdisciplinary Plasma Sci, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW E | 2001年 / 63卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.63.045302

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：

Two-dimensional homogeneous turbulent convection is studied numerically. Though Bolgiano-Obukhov scaling is approximately valid, strong differences exist in the intermittency properties of velocity and temperature increments, where the latter are similar to those of a passive scalar. The main difference of the small-scale dynamics compared to a passive scalar arises from the Kelvin-Helmholtz instability, but this process does not affect the scaling properties. A condition for a scalar field to show the ramp-and-cliff structures of a passive scalar is discussed.

引用

页码：453021 / 453024

页数：4

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