TRANSPORT OF A PASSIVE TRACER IN TIME-DEPENDENT RAYLEIGH-BENARD CONVECTION

被引：5

作者：

CAMASSA, R

WIGGINS, S

机构：

[1] UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87545

[2] CALTECH,PASADENA,CA 91125

来源：

PHYSICA D | 1991年 / 51卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0167-2789(91)90253-6

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

The transport of a passive tracer in a Rayleigh-Benard cell is considered, when the convection rolls are subject to oscillatory instability. We propose a mechanism for the roll to roll transport and introduce formulae for quantifying the spreading of the tracer, which are valid for as long as the molecular diffusivity can be neglected. A criterion for weighing the effects of diffusivity is discussed, and we provide an example by numerically simulating the flow in presence of molecular diffusivity.

引用

页码：472 / 481

页数：10

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