COHERENT STRUCTURES IN TURBULENT CONVECTION, AN EXPERIMENTAL-STUDY

被引：159

作者：

ZOCCHI, G ^{[1
]}

MOSES, E ^{[1
]}

LIBCHABER, A ^{[1
]}

机构：

[1] UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637

来源：

PHYSICA A | 1990年 / 166卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0378-4371(90)90064-Y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present results from a visualization experiment in Rayleigh-Bénard convection in water at high Rayleigh number. We distinguish three kinds of coherent structures in the flow: waves along the boundary layers, plumes, and spiraling swirls. The waves originate from the interaction of plumes with the boundary layers. The spiraling swirls appear to be the result of a shear instability of the viscous boundary layer. We describe the "life cycle" of these structures in the cell, and when we focus on the waves and characterize them quantitatively using local temperature measurements. © 1990.

引用

页码：387 / 407

页数：21

共 23 条

[1] SCALING OF HARD THERMAL TURBULENCE IN RAYLEIGH-BENARD CONVECTION [J].