EXPERIMENTAL INVESTIGATION ON THE CHAOTIC PHENOMENA IN THE WAKE OF A NATURAL THERMAL CONVECTION FLOW

被引：0
|
作者：
林贞彬 [1 ]
郭大华 [1 ]
余西龙 [1 ]
朱进生 [1 ]
机构：
[1] Laboratory of High Temperature of Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China 100080
来源：
Acta Mechanica Sinica | 2000年 / 16卷 / 02期
基金：
中国国家自然科学基金;
关键词：
thermal convection flow; transition; chaos; electron beam fluorescence technique;
D O I：
暂无
中图分类号：
O157 [组合数学（组合学）];
学科分类号：
070104 ;
摘要：
Chaotic phenomena in the wake of thermal convection flow fieldsabove a heating flat plate were investigated experimentally. A newly developed elec-tron beam fluorescence technique (EBF) was used to simultaneously measure densityfluctuation at 7 points in a cross section above the plate. Correlation dimensions,intermittence coefficients, Fourier spectrum have been obtained for different Grashofnumbers. Spatial distribution of correlation dimensions are presented. The experi-mental result shows that there is a certain relationship between the density fluctuationand the Gr number. And time-spacial characteristic of chaos evolution is also given.
引用
收藏
页码：121 / 127
页数：7
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