Dimensional Analysis Parameters of Turbulence in The Wake of a Square Cylinder

0542740 - ÚT 2022 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Yanovych, V. - Duda, D. - Uruba, Václav
Dimensional Analysis Parameters of Turbulence in The Wake of a Square Cylinder.
19th Conference on Power System Engineering. Melville: American Institute of Physics Inc., 2021 - (Richter, L.; Vasickova, E.; Vasickova, M.; Volf, M.), č. článku 030003. 2323. ISBN 978-0-7354-4067-8. ISSN 0094-243X. E-ISSN 1551-7616.
[Conference on Power System Engineering /19./. Plzeň (CZ), 08.09.2020-10.09.2020]
Grant CEP: GA TA ČR(CZ) TH02020057
Institucionální podpora: RVO:61388998
Klíčová slova: turbulence * square cylinder * CTA
Obor OECD: Applied mechanics
https://aip.scitation.org/doi/epdf/10.1063/5.0041434

In this article, we show the results of a study of the structure of a turbulent flow behind a square cylinder. Namely, for the series of points that have the highest standard deviation value. During the experiment, we were changing the position of the square cylinder relative to the total flow. Experimental data were obtained using Constant Temperature Anemometry. As a result of the analysis, we obtained graphical distributions of the main parameters of the turbulent flow. They revealed that the maximum value of the Reynolds number based on the Taylor micro-scale is observed exactly at the cylinder angle of 30° and 45°. It was also found that the distribution of the energy dissipation rate, depending on the angle of rotation of the cylinder, has a certain sinusoidal character with local peak values. The results of the analysis also showed that the distribution of values of dissipation scale and dissipation time at some distance from the cylinder has the largest range of their values.
Trvalý link: http://hdl.handle.net/11104/0320722