Computational and experimental investigations of the vortical flow structures in the near wake region downstream of the Ahmed vehicle model

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dc.authoridSahin, Besir/0000-0003-0671-0890
dc.authoridTunay, Tural/0000-0001-5994-4565
dc.contributor.authorTunay, Tural
dc.contributor.authorYaniktepe, Bulent
dc.contributor.authorSahin, Besir
dc.date.accessioned2025-01-06T17:36:10Z
dc.date.available2025-01-06T17:36:10Z
dc.date.issued2016
dc.description.abstractThe present study aims to investigate flow characteristics downstream of the Ahmed vehicle model using both experimental and computational methods. Ahmed vehicle model having 1/4 scale and 25 slant angle is employed at Reynolds number of Re-H=1.48x10(4). Investigations are conducted in two parts. In the first part, Large Eddy Simulation (LES) method is used to resolve the flow structures downstream of the Ahmed model, computationally. In the second part, the technique of the particle image velocimetry (PIV) is employed to obtain the flow fields downstream of the Ahmed model. The PIV and LES investigations provides time-averaged and instantaneous velocity field results, such as vorticity contours, streamline topology, velocity profiles and spectral analysis of the flow velocity. Flow features that have been predicted by computational study are in a good harmony with the results predicted by experimental studies both on the slanted surface and in the near wake region downstream of the Ahmed model. Results present that characteristics of flow features that exist on the rear slanted surface and in the near wake region of the Ahmed model exhibit great variations in a very short distance in both stream-wise and vertical direction of the flow.
dc.description.sponsorshipoffice of Scientific Research Projects of Cukurova University [AAP20025]
dc.description.sponsorshipThe authors acknowledge the funding of the office of Scientific Research Projects of Cukurova University under contract no: AAP20025.
dc.identifier.doi10.1016/j.jweia.2016.10.006
dc.identifier.endpage64
dc.identifier.issn0167-6105
dc.identifier.issn1872-8197
dc.identifier.scopus2-s2.0-84992392098
dc.identifier.scopusqualityQ1
dc.identifier.startpage48
dc.identifier.urihttps://doi.org/10.1016/j.jweia.2016.10.006
dc.identifier.urihttps://hdl.handle.net/20.500.14669/1787
dc.identifier.volume159
dc.identifier.wosWOS:000389167700005
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofJournal of Wind Engineering and Industrial Aerodynamics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectAhmed vehicle model
dc.subjectLES
dc.subjectPIV
dc.subjectSpectral analysis
dc.subjectWake flow
dc.titleComputational and experimental investigations of the vortical flow structures in the near wake region downstream of the Ahmed vehicle model
dc.typeArticle

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