PIV Measurement of Separated Flow in a Square Channel With Streamwise Periodic Ribs on One Wall
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F07%3APU73420" target="_blank" >RIV/00216305:26210/07:PU73420 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
PIV Measurement of Separated Flow in a Square Channel With Streamwise Periodic Ribs on One Wall
Original language description
In this study, particle image velocimetry (PIV) is used to investigate the physical process of separated flow in a square channel roughened with periodically transverse ribs on one wall. The ribs obstruct the channel by 15% of its height and are arranged12 rib heights apart. The Reynolds number, based on the bulk-mean velocity and the corresponding hydraulic diameter of the channel, is fixed at 22,000. Assuming flow periodicity in the streamwise direction, the investigated domain is between two consecutive ribs. The emphasis of this study is to give some insight into the turbulence mechanism associated with separation, reattachment, and subsequent redevelopment. Results are included for mean velocity, friction coefficient, vorticity thickness, Reynolds shear stress, anisotropy parameter, and production of turbulent kinetic energy and shear stress. Based on the two-point correlation profiles, Taylor microscales are derived to reveal the sizes of the turbulence structure in the longitud
Czech name
Měření vlastností separovaného v proudu ve čtvercovém kanále s obdélníkovými žebry
Czech description
V příspěvku je popsáno využití metod PIV pro výzkum přenosu tepla v separovaném proudu. Separovaný proud vzniká ve čtvercovém kanálu jehož jedna strana je opatřena žebry, která zabírají 15 % výšky kanálu. Výsledky měření, získané při Reynoldsově čísle 22000, jsou prezentovány a popsány.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BK - Liquid mechanics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/1P05OE191" target="_blank" >1P05OE191: HEFRECA - High efficiency recuperator</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
ISSN
0098-2202
e-ISSN
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Volume of the periodical
129
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
834-841
UT code for WoS article
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EID of the result in the Scopus database
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