Impact of Turbulence Generators on Turbulent Characteristics and Structures
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00471312" target="_blank" >RIV/61388998:_____/17:00471312 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.14311/TPFM.2017.024" target="_blank" >http://dx.doi.org/10.14311/TPFM.2017.024</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/TPFM.2017.024" target="_blank" >10.14311/TPFM.2017.024</a>
Alternative languages
Result language
angličtina
Original language name
Impact of Turbulence Generators on Turbulent Characteristics and Structures
Original language description
The turbulent generators are routinely used to produce very turbulent flows. Special type of vertically slenderize spires are applied to enhance turbulent diffusion from the surface upwards in order to increase the boundary layer depth. This paper studies the influence of variable upstream distance of generators on formation of both vortical and non-vortical organized structures within a test section. The 2-component 2-dimensional time-resolved particle image velocimetry measurement of the flow was performed in the wind channel with very rough surface. Intermittent flow dynamics was evaluated by means of higher order moments, vorticity, quadrant and wavelet analysis. The downstream evolution of the flow suggests that equilibrium between roughness- and spires-produced turbulence was reached at the distance of 7 spires height.n
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
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/GA15-18964S" target="_blank" >GA15-18964S: Experimental study of organized structures in turbulent boundary layer with free-stream turbulence</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Topical Problems of Fluid Mechanics 2017
ISBN
978-80-87012-61-1
ISSN
2336-5781
e-ISSN
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Number of pages
10
Pages from-to
185-194
Publisher name
Institute of Thermomechanics AS CR, v. v. i.
Place of publication
Prague
Event location
Prague
Event date
Feb 15, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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