On the Anisotropic Vorticity in Turbulent Channel Flows

被引：27

作者：

Andersson, Helge I. ^{[1
]}

Zhao, Lihao ^{[2
]}

Variano, Evan A. ^{[3
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, N-7491 Trondheim, Norway

[2] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, N-7491 Trondheim, Norway

[3] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA

来源：

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 2015年 / 137卷 / 08期

关键词：

WALL; STATISTICS;

D O I：

10.1115/1.4030003

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Revisiting the fluctuating vorticity field in the centerplane of a turbulent channel flow, we show that the vorticity is distinctly anisotropic at low Reynolds numbers (Re). This result is in contrast with some earlier conclusions. The anisotropy is a function of Re, and we have compiled data to show that the anisotropy gradually vanishes with increasing Re. Acknowledging the anisotropy is important for current efforts on simulating turbulent particle suspensions.

引用

页数：3

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