Show simple item record

dc.contributor.authorMeskell, Craig
dc.contributor.authorPellegrino, Alberto
dc.date.accessioned2019-09-27T14:50:10Z
dc.date.available2019-09-27T14:50:10Z
dc.date.issued2019
dc.date.submitted2019en
dc.identifier.citationMeskell, C. and Pellegrino, A., Vortex shedding lock-in due to pitching oscillation of a wind turbine blade section at high angles of attack, International Journal of Aerospace Engineering, 2019, 6919505, 2019en
dc.identifier.otherY
dc.identifier.urihttps://www.hindawi.com/journals/ijae/2019/6919505/
dc.identifier.urihttp://hdl.handle.net/2262/89575
dc.description.abstractThe unsteady flow around a pitching two-dimensional airfoil section (NREL S809) has been simulated using unsteady RANS with the transition SST turbulence model. This geometry is chosen to represent a wind turbine blade in a standstill configuration. The Reynolds number is based on a chord length of 1 m. A prescribed sinusoidal pitching motion has been applied at a fixed amplitude of for a range of high angles of attack . At these incidences, the airfoil will behave more like a bluff body and may experience periodic vortex shedding. It is well known that, in bluff body flows, oscillations can lead to a lock-in (lock-in) of the vortex shedding frequency, , with the body’s motion frequency, . In order to investigate the susceptibility of airfoil to lock-in, the frequency ratio () has been varied around . The lock-in region boundaries have been proposed, and an analysis of the effect of the oscillation amplitude has been conducted. The lock-in map obtained suggests that, for the vibration amplitude considered, the risk of vortex-induced vibration is more significant in the regions of and , i.e., for shallower characteristic lengths. Finally, a lumped parameter wake oscillator model has been proposed for pitching airfoils. This simple model is in qualitative agreement with the CFD results.en
dc.language.isoenen
dc.relation.ispartofseriesInternational Journal of Aerospace Engineering;
dc.relation.ispartofseries2019;
dc.relation.ispartofseries6919505;
dc.rightsYen
dc.subjectpitching two-dimensional airfoil sectionen
dc.subjectWind turbinesen
dc.subjectWind turbine bladesen
dc.titleVortex shedding lock-in due to pitching oscillation of a wind turbine blade section at high angles of attacken
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/cmeskell
dc.identifier.rssinternalid205582
dc.identifier.doihttp://dx.doi.org/10.1155/2019/6919505
dc.rights.ecaccessrightsopenAccess
dc.identifier.orcid_id0000-0001-6303-2796


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record