Effect of Cylinder Roughness on Strouhal Number
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F22%3A00583372" target="_blank" >RIV/61388998:_____/22:00583372 - isvavai.cz</a>
Alternative codes found
RIV/49777513:23210/22:43964067
Result on the web
<a href="http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2022/27-TPFM2022.pdf" target="_blank" >http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2022/27-TPFM2022.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/TPFM.2022.027" target="_blank" >10.14311/TPFM.2022.027</a>
Alternative languages
Result language
angličtina
Original language name
Effect of Cylinder Roughness on Strouhal Number
Original language description
The main goal of this paper is to establish a better understanding of the relationship between a Strouhal number and surface roughness. Hot-wire anemometry was used to evaluations the characteristics of turbulent flow behind circular cylinders with different relative roughness 0% (smooth surface) 0.83%, 1.67%, 3.33%, and 6.67%. At the experimental investigation, the Reynolds number based on the cylinder diameter was 5 × 103 < Red < 2 × 104. The obtained data showed that the Strouhal number decreased with increasing roughness. While, the dissipation rate decreases, and the value of the Kolmogorov and Taylor microscales increases. Also, spectral analysis of streamwise velocity fluctuations allowed us to estimate the location of the vortex-shedding frequency which at growing roughness tends to reduce.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
—
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
2022
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 2022
ISBN
978-80-87012-77-2
ISSN
2336-5781
e-ISSN
—
Number of pages
7
Pages from-to
201-207
Publisher name
Institute of Thermomechanics AS CR
Place of publication
Prague
Event location
Prague
Event date
Feb 16, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
001235659500027