Spatial and temporal correlations in turbulent boundary layers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F18%3A00489962" target="_blank" >RIV/61388998:_____/18:00489962 - 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
Spatial and temporal correlations in turbulent boundary layers
Original language description
The experimental data from time-resolved particle image velocimetry measurement of the boundary-layer flows over various aerodynamically rough surfaces are presented. Temporal, spatial, and time-space correlation are analyzed and used for calculation of integral length and time scales. Temporal and spatial integral scales are connected via convection velocity. Taylor's hypothesis on frozen turbulence says that the convection velocity is equal to the local mean velocity. The experimental data shows that the convection velocity is larger than local mean velocity in the lower third of the boundary layer and greater in the upper two thirds. The cross-over line is higher over surfaces with higher roughness.
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
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/GA18-09539S" target="_blank" >GA18-09539S: Large structures in the boundary layers over complex surfaces in high Reynolds numbers</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
32nd Symposium on anemometry: proceedings
ISBN
978-80-87117-17-0
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
32-36
Publisher name
Institute of Hydrodynamics CAS, v. v. i.
Place of publication
Prague
Event location
Holany - Litice
Event date
May 29, 2018
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
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