Nonlinear Vibrations of Elastically Supported Cylinder Moving in the Fluid Flow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper nonlinearities in the fluid-structure interactions of an elastically supported cylinder moving in the uniform fluid flow are discussed. A new two degrees-of-freedom wake oscillator model [1, 2] is utilised to describe vortex-induced vibrations of elastically supported cylinders capable of moving in cross-flow and in-line directions. Total hydrodynamic force acting on the cylinder is obtained here as a sum of lift and drag forces, which are defined as being proportional to the square of the magnitude of the relative flow velocity around
the cylinder. The two van der Pol type oscillators are then used to model fluctuating drag and lift coefficients. The resulting equations of motions of the cylinder in cross-flow and in-line directions are coupled through the fluid forces. Experimental data and Computational Fluid Dynamics (CFD) results are used to calibrate the proposed model and to verify the obtained predictions of complex fluid-structure interactions for different mass ratios.
Original languageEnglish
Title of host publicationContributions to the Foundations of Multidisciplinary Research in Mechanics
Subtitle of host publicationPapers presented during the 24th International Congress of Theoretical and Applied Mechanics
EditorsJ. M. Floryan
Place of PublicationCanada
PublisherIUTAM
Pages172-173
Number of pages2
Volume1
ISBN (Print)9780660054599
Publication statusPublished - 2017
Event24th International Congress of Theoretical and Applied Mechanics - Montreal, Canada
Duration: 22 Aug 201626 Aug 2016

Conference

Conference24th International Congress of Theoretical and Applied Mechanics
Abbreviated title(ICTAM 2016)
CountryCanada
CityMontreal
Period22/08/1626/08/16

Fingerprint Dive into the research topics of 'Nonlinear Vibrations of Elastically Supported Cylinder Moving in the Fluid Flow'. Together they form a unique fingerprint.

  • Cite this

    Pavlovskaia, E. E., Postnikov, A., & Wiercigroch, M. (2017). Nonlinear Vibrations of Elastically Supported Cylinder Moving in the Fluid Flow. In J. M. Floryan (Ed.), Contributions to the Foundations of Multidisciplinary Research in Mechanics: Papers presented during the 24th International Congress of Theoretical and Applied Mechanics (Vol. 1, pp. 172-173). IUTAM. http://iutam.org/wp-content/uploads/2017/02/ICTAM_Proceedings_Vol_1.pdf