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Near-wall statistics of a turbulent pipe flow at shear Reynolds numbers up to 40000

Willert, Christian and Soria, Julio and Stanislas, Michel and Klinner, Joachim and Amili, Omid and Eisfelder, Michael and Cuvier, Christoph and Bellani, Gabriele and Fiorini, Tomaso and Talamelli, Alessandro (2017) Near-wall statistics of a turbulent pipe flow at shear Reynolds numbers up to 40000. Journal of Fluid Mechanics, 826 (R5), pp. 1-11. Cambidge University Press. DOI: 10.1017/jfm.2017.498 ISSN 0022-1120

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Official URL: https://doi.org/10.1017/jfm.2017.498

Abstract

This paper reports on near-wall two-component–two-dimensional (2C–2D) particle image velocimetry (PIV) measurements of a turbulent pipe flow at shear Reynolds numbers up to $Re_\tau = 40000$ acquired in the CICLoPE facility of the University of Bologna. The 111.5 m long pipe of 900 mm diameter offers a well-established turbulent flow with viscous length scales ranging from 85 µm at $Re_\tau = 5000$ down to 11µm at $Re_\tau = 40000$. These length scales can be resolved with a high-speed PIV camera at image magnification near unity. Statistically converged velocity profiles were determined using multiple sequences of up to 70 000 PIV recordings acquired at sampling rates of 100 Hz up to 10 kHz. Analysis of the velocity statistics shows a well-resolved inner peak of the streamwise velocity fluctuations that grows with increasing Reynolds number and an outer peak that develops and moves away from the inner peak with increasing Reynolds number.

Item URL in elib:https://elib.dlr.de/113813/
Document Type:Article
Title:Near-wall statistics of a turbulent pipe flow at shear Reynolds numbers up to 40000
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Willert, ChristianChris.Willert (at) dlr.dehttps://orcid.org/0000-0002-1668-0181
Soria, Juliomonash universityUNSPECIFIED
Stanislas, Michellaboratoire de mécanique de lille, franceUNSPECIFIED
Klinner, Joachimjoachim.klinner (at) dlr.deUNSPECIFIED
Amili, Omidmonash universityUNSPECIFIED
Eisfelder, Michaelmonash universityUNSPECIFIED
Cuvier, Christophlml umr cnrs 8107, villeneuve d'ascq, franceUNSPECIFIED
Bellani, Gabrieleuniversity of bolognaUNSPECIFIED
Fiorini, Tomasouniversity of bolognaUNSPECIFIED
Talamelli, Alessandrouniversity of bolognaUNSPECIFIED
Date:14 August 2017
Journal or Publication Title:Journal of Fluid Mechanics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:826
DOI :10.1017/jfm.2017.498
Page Range:pp. 1-11
Publisher:Cambidge University Press
ISSN:0022-1120
Status:Published
Keywords:pipe flow boundary layer, turbulent boundary layer, high Reynolds number flow, particle Image velocimetry, PIV
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Willert, Dr.phil. Christian
Deposited On:04 Sep 2017 10:00
Last Modified:31 Jul 2019 20:11

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