<div class="csl-bib-body">
<div class="csl-entry">Giurgiu, V. (2021). <i>The TU Wien turbulent water channel: measurements and statistics</i> [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2021.88963</div>
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dc.identifier.uri
https://doi.org/10.34726/hss.2021.88963
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/17164
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dc.description.abstract
The statistical properties of a turbulent duct flow are investigated experimentally. Experiments are performed in the TU Wien Turbulent Water Channel at a shear Reynolds number of 370. A high-speed imaging system is used to record the flow and the velocity fields are obtained via three-dimensional particle tracking velocimetry (3D-PTV). Experimental results are first used to compute the first four moments of the velocity distribution and then compared against direct numerical simulations (DNS). It was found that in the duct, the statistics of all velocity components exhibit good agreement with those obtained from DNS. Slight overestimation of the main Reynolds stresses, particularly close to the wall, has been observed. Skewness and flatness of the stream-wise velocity were underestimated in the viscous sub-layer. Moreover, a new method is proposed to correct the misalignment of the measurement volume with respect to the actual flow direction. This method successfully reduced the average span-wise velocity. Finally, we analysed the effect of the width-to-height aspect ratio (AR) on the flow statistics. We analysed DNS of duct flows with 1 ≤ AR ≤ 8 and we observed that, at a shear Reynolds number of 150, a duct with AR ≤ 8 is not sufficient to reproduce the statistical properties observed in a turbulent channel flow (AR = ∞). These findings are significant because they provide evidence of the turbulence characteristics in the TU Wien Turbulent Water Channel.
en
dc.language
English
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dc.language.iso
en
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
turbulence
en
dc.subject
duct
en
dc.subject
channel flow
en
dc.title
The TU Wien turbulent water channel: measurements and statistics
en
dc.type
Thesis
en
dc.type
Hochschulschrift
de
dc.rights.license
In Copyright
en
dc.rights.license
Urheberrechtsschutz
de
dc.identifier.doi
10.34726/hss.2021.88963
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dc.contributor.affiliation
TU Wien, Österreich
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dc.rights.holder
Vlad Giurgiu
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dc.publisher.place
Wien
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tuw.version
vor
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tuw.thesisinformation
Technische Universität Wien
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dc.contributor.assistant
De Paoli, Marco
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tuw.publication.orgunit
E322 - Institut für Strömungsmechanik und Wärmeübertragung
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dc.type.qualificationlevel
Diploma
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dc.identifier.libraryid
AC16180737
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dc.description.numberOfPages
51
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dc.thesistype
Diplomarbeit
de
dc.thesistype
Diploma Thesis
en
dc.rights.identifier
In Copyright
en
dc.rights.identifier
Urheberrechtsschutz
de
tuw.advisor.staffStatus
staff
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tuw.assistant.staffStatus
staff
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tuw.assistant.orcid
0000-0002-4709-4185
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item.languageiso639-1
en
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item.mimetype
application/pdf
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item.openairecristype
http://purl.org/coar/resource_type/c_bdcc
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item.fulltext
with Fulltext
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item.openairetype
master thesis
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item.grantfulltext
open
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item.openaccessfulltext
Open Access
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item.cerifentitytype
Publications
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crisitem.author.dept
E322-01 - Forschungsbereich Strömungsmechanik
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crisitem.author.parentorg
E322 - Institut für Strömungsmechanik und Wärmeübertragung