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Zhurnal Tekhnicheskoi Fiziki, 2021, Volume 91, Issue 5, Pages 758–763
DOI: https://doi.org/10.21883/JTF.2021.05.50686.335-20
(Mi jtf5010)
 

This article is cited in 1 scientific paper (total in 1 paper)

Gases and Fluids

Competition between bluff body vibration modes in an air flow

A. N. Ryabinin, R. V. Symigirilov

Saint Petersburg State University
Full-text PDF (251 kB) Citations (1)
Abstract: A vibration model of a body with two degrees of freedom has been developed based on available mathematical models that describe the vibration of a bluff body with one degree of freedom in a gas flow. For an elastically fixed body, equations of transverse translational vibrations and rotary vibrations about an axis that is normal to the velocity vector of an approach flow have been derived. Using the Krylov–Bogoliubov method, these equations have been reduced, in a first approximation, to equations for slowly varying vibration amplitudes and frequencies. It has turned out that differential equations that were derived for the squares of dimensionless amplitudes of translational and rotary vibrations coincide with the well-known Lotka–Volterra equations, which describe competition between two animal species eating the same food. The coefficients of the equations have been found to depend on approach flow velocity. The model has been verified using a bridge segment model in a wind tunnel as an example.
Keywords: translational and rotational vibrations, air flow, bluff body.
Funding agency Grant number
Russian Foundation for Basic Research 19-38-90045
This study was financially supported by the Russian Foundation for Basic Research, grant no. 19-38-90045.
Received: 04.12.2020
Revised: 04.12.2020
Accepted: 08.12.2020
English version:
Technical Physics, 2021, Volume 66, Issue 6, Pages 787–792
DOI: https://doi.org/10.1134/S1063784221050200
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: A. N. Ryabinin, R. V. Symigirilov, “Competition between bluff body vibration modes in an air flow”, Zhurnal Tekhnicheskoi Fiziki, 91:5 (2021), 758–763; Tech. Phys., 66:6 (2021), 787–792
Citation in format AMSBIB
\Bibitem{RyaSym21}
\by A.~N.~Ryabinin, R.~V.~Symigirilov
\paper Competition between bluff body vibration modes in an air flow
\jour Zhurnal Tekhnicheskoi Fiziki
\yr 2021
\vol 91
\issue 5
\pages 758--763
\mathnet{http://mi.mathnet.ru/jtf5010}
\crossref{https://doi.org/10.21883/JTF.2021.05.50686.335-20}
\elib{https://elibrary.ru/item.asp?id=46466570}
\transl
\jour Tech. Phys.
\yr 2021
\vol 66
\issue 6
\pages 787--792
\crossref{https://doi.org/10.1134/S1063784221050200}
\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85124349284}
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  • https://www.mathnet.ru/eng/jtf/v91/i5/p758
  • This publication is cited in the following 1 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Zhurnal Tekhnicheskoi Fiziki Zhurnal Tekhnicheskoi Fiziki
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