000015013 001__ 15013
000015013 005__ 20161115100209.0
000015013 04107 $$aeng
000015013 046__ $$k2016-08-21
000015013 100__ $$aPavlovskaia, Ekaterina
000015013 24500 $$aNonlinear Vibrations of Elastically Supported Cylinder Moving in the Fluid Flow

000015013 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000015013 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000015013 506__ $$arestricted
000015013 520__ $$2eng$$aIn 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.

000015013 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015013 653__ $$a

000015013 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000015013 720__ $$aPavlovskaia, Ekaterina
000015013 8560_ $$ffischerc@itam.cas.cz
000015013 8564_ $$s88778$$uhttps://invenio.itam.cas.cz/record/15013/files/TS.MS04-7.02.pdf$$yOriginal version of the author's contribution as presented on CD,  page 172, code TS.MS04-7.02
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000015013 962__ $$r13812
000015013 980__ $$aPAPER