Persistent global power fluctuations near a dynamic transition in electroconvection -: art. no. 030101

被引：5
|
作者：
Tóth-Katona, T
Cressman, JR
Goldburg, WI
Gleeson, JT
机构：
[1] Kent State Univ, Dept Phys, Kent, OH 44242 USA
[2] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA
来源：
PHYSICAL REVIEW E | 2003年 / 68卷 / 03期
关键词：
D O I：
10.1103/PhysRevE.68.030101
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：
This is a study of the global fluctuations in power injection and light transmission through a liquid crystal just above the onset of electroconvection. The source of the fluctuations is identified as the creation and annihilation of defects. They are spatially uncorrelated and yet temporally correlated. The temporal correlation is seen to persist for extremely long times. There seems to be an especially close relation between defect creation or annihilation in electroconvection and thermal plumes in Rayleigh-Benard convection.
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页数：4
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