ROTATING RAYLEIGH-BENARD CONVECTION - ASPECT-RATIO DEPENDENCE OF THE INITIAL BIFURCATIONS

被引：46

作者：

NING, L ^{[1
]}

ECKE, RE ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545

来源：

PHYSICAL REVIEW E | 1993年 / 47卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.47.3326

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：

The initial bifurcations in rotating Rayleigh-Benard convection are studied in the range of dimensionless rotation rate 0 < OMEGA < 2150 for a cylindrical cell with an aspect ratio of 2.5. We used simultaneous optical-shadowgraph, heat-transport, and local-temperature measurements to determine the stability and characteristics of the azimuthally periodic wall convection state. We also show that the second transition corresponds to the onset of bulk convection. Our results for critical Rayleigh numbers, precession frequencies, and critical mode numbers agree well with theoretical results. The dynamics of the wall convection state can be described by a complex Ginzburg-Landau amplitude equation.

引用

页码：3326 / 3333

页数：8

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