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dc.contributor.authorÁlvarez Naveira, Antonio José
dc.contributor.authorNieto Mouronte, Félix
dc.contributor.authorHernández, Santiago
dc.date.accessioned2021-04-15T18:54:23Z
dc.date.available2021-04-15T18:54:23Z
dc.date.issued2018
dc.identifier.citationA.J. Álvarez, F. Nieto, S. Hernández (2018). Study of a static and vertically free- to-oscillate 4:1 rectangular cylinder by means of 2D URANS simulations. WIT Transactions on Engineering Sciences, 2018, vol. 120, p. 41-50.es_ES
dc.identifier.issn1743-3533
dc.identifier.urihttp://hdl.handle.net/2183/27760
dc.description.abstract[Abstract:] Flexible structures, such as cable-supported bridges, are prone to suffer from vortex-induced vibrations (VIV) under wind flow, as their span lengths are steadily growing in the last decades. VIV is a phenomenon that takes place at reduced wind speeds. The movements of the structure at VIV are self-limited and their frequency corresponds with the natural frequency of the structure (lock in). Therefore, VIV affects the structure’s serviceability and can cause fatigue related damage. Hence, the need for identifying and avoiding this phenomenon at the early design stages is a key issue in long-span bridges design. In the present study a rectangular cylinder of width to depth ratio 4:1, which is a common simplification of a bridge deck cross section, is analysed for the static case as well as undergoing free vibration in the vertical direction under wind flow. These analyses have been carried out by 2D URANS CFD simulations, adopting two different turbulence models: the k − ω SST, which is based upon the Boussinesq eddy-viscosity approximation, and the Reynolds Stress Model, which directly calculates the components of the specific Reynolds stresses. For the static case the force coefficients, Strouhal number and the pressure coefficient distributions were calculated and compared with the available experimental data. In the case of the free-to-oscillate 4:1 rectangular cylinder, the oscillation amplitudes are compared with wind tunnel data reported in the literature. In addition, the frequencies and phase-lags between the time-dependent lift coefficient and the vertical oscillations are studied.es_ES
dc.description.sponsorshipMinisterio de Economía y Competitividad; BIA2016-76656-Res_ES
dc.description.sponsorshipMinisterio de Economía y Competitividad; BES-2014-068418es_ES
dc.description.sponsorshipMinisterio de Economía y Competitividad; BIA2013-41965-Pes_ES
dc.description.sponsorshipXunta de Galicia; ED431C 2017/72es_ES
dc.language.isoenges_ES
dc.publisherWIT Presses_ES
dc.relation.urihttps://doi.org/10.2495/AFM180051es_ES
dc.rightsCopyright: WIT Presses_ES
dc.subject4:1 rectangular cylinderes_ES
dc.subjectVortex sheddinges_ES
dc.subjectVortex-induced vibrationses_ES
dc.subjectForce coefficientses_ES
dc.subjectURANSes_ES
dc.subjectReynolds Stress Modeles_ES
dc.subjectCFDes_ES
dc.subjectPressure distributiones_ES
dc.titleStudy of a static and vertically free-to-oscillate 4:1 rectangular cylinder by means of 2D URANS simulationses_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.rights.accessinfo:eu-repo/semantics/openAccesses_ES
UDC.journalTitleWIT Transactions on Engineering Scienceses_ES
UDC.volume120es_ES
UDC.startPage41es_ES
UDC.endPage50es_ES
dc.identifier.doi10.2495/AFM180051
UDC.conferenceTitleAdvances in Fluid Mechanics XIIes_ES


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