Numerical investigation of wind-lens combinations for improving aerodynamic performance of an elliptical-bladed Savonius wind turbine

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dc.authorid0000-0002-7888-0250
dc.contributor.authorKaya, Ahmet Fatih
dc.contributor.authorAcir, Adem
dc.contributor.authorKaya, Elif
dc.date.accessioned2026-02-12T21:05:28Z
dc.date.available2026-02-12T21:05:28Z
dc.date.issued2023
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractSavonius turbines have potential for diverse applications. Despite their relatively low efficiency, the aerodynamic performance of Savonius rotors can be enhanced. This investigation seeks to examine the impact of different wind-lens combinations on the aerodynamic performance of a two-dimensional elliptical-bladed Savonius rotor. The study accomplished independence from both mesh elements and time-step size, and numerical results were juxtaposed against relevant experimental data. Four wind-lens configurations were tested, namely, diffuser (S1), nozzle diffuser (S2), diffuser brim (S3), and nozzle diffuser brim (S4), with a notable decrease in the power coefficient being observed at all tip speed ratios. Subsequently, modifications were made to these models for the Savonius rotor (S-M1, S-M2, S-M3, and S-M4) via changes to their positions and angles, resulting in significant improvements to the aerodynamic performance of the elliptical-bladed Savonius rotor. The maximum power coefficient was observed to be 0.227 at a tip speed ratio of 1.0 for the elliptical-bladed design, whereas the S-M4 model exhibited a maximum power coefficient of 0.404 at the same tip speed ratio.
dc.identifier.doi10.1007/s40430-023-04216-8
dc.identifier.issn1678-5878
dc.identifier.issn1806-3691
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85159227848
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s40430-023-04216-8
dc.identifier.urihttps://hdl.handle.net/20.500.12885/6960
dc.identifier.volume45
dc.identifier.wosWOS:000986487700001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Heidelberg
dc.relation.ispartofJournal of The Brazilian Society of Mechanical Sciences and Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260212
dc.subjectVertical axis wind turbines
dc.subjectCFD analysis
dc.subjectSavonius
dc.subjectElliptical blade
dc.subjectWind-lens
dc.titleNumerical investigation of wind-lens combinations for improving aerodynamic performance of an elliptical-bladed Savonius wind turbine
dc.typeArticle

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