Assessing aerodynamic force estimation with experiments and simulations of flapping-airfoil flows on the verge of three-dimensionality

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dc.contributor.author Moriche Guerrero, Manuel
dc.contributor.author Raiola, Marco
dc.contributor.author Discetti, Stefano
dc.contributor.author Ianiro, Andrea
dc.contributor.author Flores Arias, Óscar
dc.contributor.author García-Villalba Navaridas, Manuel
dc.date.accessioned 2020-05-08T05:31:29Z
dc.date.available 2020-05-08T05:31:29Z
dc.date.issued 2020-02-01
dc.identifier.bibliographicCitation Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, (2019), 234(2), 428–444.
dc.identifier.issn 0954-4100
dc.identifier.uri http://hdl.handle.net/10016/30126
dc.description.abstract This paper reports a combined experimental and numerical study of the flow over a rigid airfoil in flapping motion. The setup consists of a heaving and pitching airfoil at a moderate Reynolds number (Re=500-3600), at a Strouhal number St=0.1. The aim is to assess the accuracy of two-dimensional direct numerical simulations in predicting aerodynamic forces in a flow configuration, which is nominally two-dimensional but is at the verge of three-dimensionality. The assessment is carried out with experiments, including flow field and aerodynamic force measurements with particle image velocimetry and a load cell. The comparative study shows a good qualitative agreement between the experiments and the simulations at comparable Reynolds numbers both in terms of forces and flow fields, but with some quantitative differences. The quantitative discrepancies between experiments and simulation are analyzed and reduced to inherent differences between experimental and computational setups. It is observed that the significant differences are apparent almost exclusively in the wake evolution. Nonetheless, this is shown to have a minor effect on the aerodynamic force estimation. Overall, the trends observed when varying the mean pitch angle and the pitching amplitude are the same in both experiments and simulations. This suggests that two-dimensional/three-dimensional effects do not alter significantly the relationship between the unsteady flow mechanisms (i.e. leading edge vortex) and the aerodynamic forces in the parametric range considered here.
dc.description.sponsorship This work was supported by grants TRA2013-41103-P (MINECO/Feder,UE) and DPI2016-76151-C2-2-R (AEI/FEDER, UE).
dc.format.extent 16
dc.language.iso eng
dc.publisher SAGE Publications
dc.rights © 2020 by Institution of Mechanical Engineers.
dc.subject.other Computational fluid dynamics
dc.subject.other Direct numerical simulation
dc.subject.other Experimental aerodynamics
dc.subject.other Flapping wings
dc.subject.other Particle image velocimetry
dc.title Assessing aerodynamic force estimation with experiments and simulations of flapping-airfoil flows on the verge of three-dimensionality
dc.type article
dc.description.status Publicado
dc.subject.eciencia Aeronáutica
dc.identifier.doi https://doi.org/10.1177/0954410019867570
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. TRA2013-41103-P
dc.relation.projectID Gobierno de España. DPI2016-76151-C2-2-R
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 428
dc.identifier.publicationissue 2
dc.identifier.publicationlastpage 444
dc.identifier.publicationtitle Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering.
dc.identifier.publicationvolume 234
dc.identifier.uxxi AR/0000024516
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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