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Spectral characteristics of turbulent boundary layers – comparison of Particle Image Velocimetry and Thermal Anemometry
- 1.0518108 - ÚT 2020 RIV FR eng C - Conference Paper (international conference)
Jurčáková, Klára - Kellnerová, Radka - Procházka, Pavel P. - Antoš, Pavel
Spectral characteristics of turbulent boundary layers – comparison of Particle Image Velocimetry and Thermal Anemometry.
EPJ Web of Conferences. Paris: EDP Sciences, 2019, č. článku 02034. 213. E-ISSN 2100-014X.
[EFM18 - Experimental Fluid Mechanics 2018. Prague (CZ), 13.11.2018-16.11.2018]
R&D Projects: GA ČR(CZ) GA18-09539S; GA ČR(CZ) GA15-18964S
Institutional support: RVO:61388998
Keywords : wind tunnel * rough surface * attached-eddy hypthesis
OECD category: Mechanical engineering
https://www.epj-conferences.org/articles/epjconf/pdf/2019/18/epjconf_efm18_02034.pdf
Flow in turbulent boundary layers over various rough surfaces was measured by the time-resolved particle image velocimetry and the thermal anemometry. The experimental methods showed very good agreement in both mean and spectral characteristics taking into account each method limitations. The spectral characteristics supported the attached eddy hypothesis. The most energetic structures were growing with the wall-normal distance and they achieved sizes equal to 3 to 8 boundary layer depths.
Permanent Link: http://hdl.handle.net/11104/0304495
Number of the records: 1