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Effect of Very-Large-Scale Motions on One- and Two-Point Statistics in Turbulent Pipe Flow Investigated by Direct Numerical Simulations

Bauer, Christian and Wagner, Claus (2021) Effect of Very-Large-Scale Motions on One- and Two-Point Statistics in Turbulent Pipe Flow Investigated by Direct Numerical Simulations. In: Proceedings of the Turbulence and Interactions Conference (TI 2018), 149, pp. 117-122. Springer. Turbulence and Interactions, 25. - 29.06.2018, Les Trois-Îlets, Martinique, France. doi: 10.1007/978-3-030-65820-5_11. ISBN 978-3-030-65820-5. ISSN 1612-2909.

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Official URL: https://link.springer.com/chapter/10.1007/978-3-030-65820-5_11


Very-large-scale motions appear in the bulk region of turbulent pipe flow. They become increasingly energetic with the Reynolds number and interact with the near-wall turbulence. These structures appear either in the shape of positive (high-speed) or negative (low-speed) streamwise velocity fluctuation. The impact of the sign of the structures on the pipe flow turbulence is analysed in this study by means of conditionally averaged one- and two-point statistics, using data from direct numerical simulations of turbulent pipe flow in a flow domain of length L=42R and friction Reynolds numbers of 180≤Reτ≤1500. Conditionally averaged two-point velocity correlations reveal that low-speed motions are longer and more energetic than their high-speed counterparts. The latter are predominately responsible for the Reynolds number dependency of turbulence statistics in the vicinity of the wall, which is in good agreement with observations of the so-called amplitude modulation in wall-bounded turbulence.

Item URL in elib:https://elib.dlr.de/142207/
Document Type:Conference or Workshop Item (Other)
Additional Information:Print ISBN: 978-3-030-65819-9 Electronic ISBN: 978-3-030-65820-5
Title:Effect of Very-Large-Scale Motions on One- and Two-Point Statistics in Turbulent Pipe Flow Investigated by Direct Numerical Simulations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Bauer, ChristianChristian.Bauer (at) dlr.dehttps://orcid.org/0000-0003-1838-6194
Wagner, ClausClaus.Wagner (at) dlr.deUNSPECIFIED
Date:17 February 2021
Journal or Publication Title:Proceedings of the Turbulence and Interactions Conference (TI 2018)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1007/978-3-030-65820-5_11
Page Range:pp. 117-122
EditorsEmailEditor's ORCID iD
Deville, M.EPFL-STI-DO, Lausanne, SwitzerlandUNSPECIFIED
Calvin, C.CEA/DRF, CEA/Paris-Saclay, FranceUNSPECIFIED
Couaillier, V.ONERA, FranceUNSPECIFIED
De La Llave Plata, M.ONERA, FranceUNSPECIFIED
Estivalezes, J.-L.ONERA, FranceUNSPECIFIED
Vincent, S.MSME Laboratory, University of Paris-Est, FranceUNSPECIFIED
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Keywords:Turbulent Pipe Flow, DNS, Very-Large-Scale Motions
Event Title:Turbulence and Interactions
Event Location:Les Trois-Îlets, Martinique, France
Event Type:international Conference
Event Dates:25. - 29.06.2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Rail Transport
DLR - Research area:Transport
DLR - Program:V SC Schienenverkehr
DLR - Research theme (Project):V - NGT BIT
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Ground Vehicles
Deposited By: Bauer, Christian
Deposited On:25 May 2021 11:05
Last Modified:25 May 2021 22:05

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