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dc.contributor.authorTabatabaei, Narges
dc.contributor.authorCervantes, Michel
dc.contributor.authorTrivedi, Chirag
dc.identifier.citationInternational Journal of Rotating Machinery. 2018, 2018 .nb_NO
dc.description.abstractThe main objective of this study is to estimate the dynamic loads acting over a glaze-iced airfoil. This work studies the performance of unsteady Reynolds-averaged Navier-Stokes (URANS) simulations in predicting the oscillations over an iced airfoil. The structure and size of time-averaged vortices are compared to measurements. Furthermore, the accuracy of a two-equation eddy viscosity turbulence model, the shear stress transport (SST) model, is investigated in the case of the dynamic load analysis over a glaze-iced airfoil. The computational fluid dynamic analysis was conducted to investigate the effect of critical ice accretions on a 0.610 m chord NACA 0011 airfoil. Leading edge glaze ice accretion was simulated with flat plates (spoiler-ice) extending along the span of the blade. Aerodynamic performance coefficients and pressure profiles were calculated and validated for the Reynolds number of 1.83 × 106. Furthermore, turbulent separation bubbles were studied. The numerical results confirm both time-dependent phenomena observed in previous similar measurements: (1) low-frequency mode, with a Strouhal number –0.02, and (2) higher frequency mode with a Strouhal number –0.69. The higher frequency motion has the same characteristics as the shedding mode and the lower frequency motion has the flapping mode characteristics.nb_NO
dc.publisherHindawi Publishing Corporationnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleTime-Dependent Effects of Glaze Ice on the Aerodynamic Characteristics of an Airfoilnb_NO
dc.title.alternativeTime-Dependent Effects of Glaze Ice on the Aerodynamic Characteristics of an Airfoilnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalInternational Journal of Rotating Machinerynb_NO
dc.description.localcodeCopyright © 2018 Narges Tabatabaei et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.nb_NO
cristin.unitnameInstitutt for energi- og prosessteknikk

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal