PIV Experiment on the Turbulent Stripe in Poiseuille Channel Flow at the Transitional Reynolds Number

被引：0

作者：

Wu, X. ^{[1
,2
]}

Aida, H. ^{[2
]}

Washio, N. ^{[2
]}

Tsukahara, T. ^{[2
]}

Kawaguchi, Y. ^{[2
]}

Yu, B. ^{[1
]}

机构：

[1] China Univ Petr, Beijing Key Lab Urban Oil & Gas Distribut Technol, Beijing 102249, Peoples R China

[2] Tokyo Univ Sci, Dept Engn Mech, Noda, Chiba 278, Japan

来源：

RECENT PROGRESSES IN FLUID DYNAMICS RESEARCH - PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON FLUID MECHANICS | 2011年 / 1376卷

基金：

美国国家科学基金会; 日本学术振兴会;

关键词：

transitional flow; particle image velocimetry; critical Reynolds number; flow field reconstruction; PLANE COUETTE-FLOW; PIPE;

D O I：

暂无

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The instantaneous velocity fields at the Reynolds number from Re-m = 1 200 to Re-m = 2 600, were measured by particle image velocimetry (PIV) to investigate the flow structure in transitional region directly and many details about flow field. The high velocity region and low velocity region, which indicate the stripe structure at transitional Reynolds number, can be found in these instantaneous velocity fields. And then, the turbulent stripe, which is shown in former numerical simulation [1], was extracted from the reconstructed flow field based on Taylor's hypothesis. The borderline between high velocity stripe and low velocity stripe was observed to be inclined against the streamwise direction.

引用

页数：6

共 14 条

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