Measuring nonextensitivity parameters in a turbulent Couette-Taylor flow

被引：170
|
作者：
Beck, C
Lewis, GS
Swinney, HL
机构：
[1] Queen Mary Univ London, Sch Math Sci, London E1 4NS, England
[2] Calimetr Inc, Alameda, CA 94501 USA
[3] Univ Texas, Ctr Nonlinear Dynam, Austin, TX 78712 USA
[4] Univ Texas, Dept Phys, Austin, TX 78712 USA
来源：
PHYSICAL REVIEW E | 2001年 / 63卷 / 03期
关键词：
D O I：
10.1103/PhysRevE.63.035303
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：
We investigate probability density functions of velocity differences at different distances r measured in a Couette-Taylor flow for a range of Reynolds numbers Re. There is good agreement with the predictions of a theoretical model based on nonextensive statistical mechanics (where the entropies are nonadditive for independent subsystems). We extract the scale-dependent nonextensitivity parameter q(r,Re) from the laboratory data.
引用
收藏
页码：353031 / 353034
页数：4
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