Active control of Rayleigh-Benard convection

被引：49

作者：

Howle, LE ^{[1
]}

机构：

[1] DUKE UNIV,CTR NONLINEAR & COMPLEX SYST,DURHAM,NC 27708

来源：

PHYSICS OF FLUIDS | 1997年 / 9卷 / 07期

关键词：

D O I：

10.1063/1.869335

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We report on stabilizing the unstable no-motion state in a moderate aspect ratio one-dimensional Rayleigh-Benard convection experiment. A linear proportional control algorithm uses shadowgraphic convection images to determine heat flux perturbations which are applied to the lower boundary by a network of local heaters. We show that simple linear control stabilizes the otherwise unstable no-motion (conduction) state over a substantial range of supercritical Rayleigh numbers. (C) 1997 American Institute of Physics.

引用

页码：1861 / 1863

页数：3

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