Large Scale Motions in Turbulent Flows
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F19%3A00503334" target="_blank" >RIV/61388998:_____/19:00503334 - isvavai.cz</a>
Result on the web
<a href="http://www.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2019/17-TPFM2019.pdf" target="_blank" >http://www.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2019/17-TPFM2019.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/TPFM.2019.017" target="_blank" >10.14311/TPFM.2019.017</a>
Alternative languages
Result language
angličtina
Original language name
Large Scale Motions in Turbulent Flows
Original language description
Quadrant analysis based on the Reynolds decomposition was performed on the data from turbulent boundary layer flows above variously rough surfaces. An estimation of a convective velocity for events significant in terms of momentum flux, and the statistics of a length and amplitude of the individual events, together with their spectral analysis, was performed. Based on the analyses, we were able to detect a few individual sweep and ejection events with a length longer than 6δ, which could be considered as very large scale motions (VLSM). We also identified number of events with a longitudinal dimension equal to approximately 3δ labelled as large scale motions (LSM). The analyses were executed for various Reynolds numbers. The number of detected structures increases with the momentum of the flow.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of Topical Problems of Fluid Mechanics 2019
ISBN
978-80-87012-69-7
ISSN
2336-5781
e-ISSN
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Number of pages
6
Pages from-to
117-122
Publisher name
Institute of Thermomechanics of the Czech Academy of Sciences
Place of publication
Praha
Event location
Prague
Event date
Feb 20, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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