Study of Vortical Structures in Turbulent Near-Wall Flows

被引：1

作者：

Herpin, Sophie ^{[1
,2
]}

Coudert, Sebastien ^{[1
]}

Foucaut, Jean-Marc ^{[1
]}

Soria, Julio ^{[2
]}

Stanislas, Michel ^{[1
]}

机构：

[1] Ecole Cent Lille, Lab Mecan Lille, Bd Paul Langevin,Cite Sci, F-59655 Villeneuve Dascq, France

[2] Monash Univ, LTRAC, Melbourne, Vic 3800, Australia

来源：

PROGRESS IN WALL TURBULENCE: UNDERSTANDING AND MODELING | 2011年 / 14卷

关键词：

PARTICLE IMAGE VELOCIMETRY; BOUNDARY-LAYER; FIELDS;

D O I：

10.1007/978-90-481-9603-6_13

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Streamwise and spanwise vortices are investigated in a database of near-wall turbulence constituted of SPIV data of boundary layer covering a large range of Reynolds numbers (Re-theta is an element of [1300; 18950]). The detection algorithm is based on a fit of the velocity field surrounding extrema of swirling strength to an Oseen vortex. Some statistical results on the characteristics of the vortices (radius, vorticity, convection velocity, density) are investigated, giving some new insight into the organization of near-wall turbulence.

引用

页码：121 / +

页数：3

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