Assessment of turbulence models for flow around a surface-mounted cube

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dc.contributor.authorDogan S.
dc.contributor.authorYagmur S.
dc.contributor.authorGoktepeli I.
dc.contributor.authorOzgoren M.
dc.date.accessioned2020-03-26T19:43:43Z
dc.date.available2020-03-26T19:43:43Z
dc.date.issued2017
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractFlow over a bluff body constitutes one of the most fundamental phenomena for engineering applications. Even though a cube is considered as a simple bluff body to examine with respect to the flow structure, there is more complicated flow physics around the cube than expected. Thus, a cube just like other bluff bodies is mostly used in the comparison process of numerical and experimental results to determine the more suitable turbulence model in case of undertaken problem. For this reason, in this paper, turbulence models have been employed to investigate the flow characteristics around a surface-mounted cube at Re = 3700 based on the edge length of the cube in terms of Computational Fluid Dynamics (CFD) and then compared with experimental results in the literature. Normalized and time-averaged results of velocity vector fields, streamwise and cross-stream velocity components, vorticity contours and streamline patterns have been numerically obtained by using k-? Re-Normalization Group (RNG), k-? Shear Stress Transport (SST) and Large Eddy Simulation (LES) turbulence models. LES turbulence model has presented the best prediction of hydrodynamic characteristics for the body among the investigated turbulence models in this study. Although k-? SST turbulence model was the second successful one after LES method among the investigated turbulence models for the estimation of flow structure around the cube, k-? RNG turbulence model was failed to capture the flow fluctuations in the wake region of the geometry. © 2017 Int. J. Mech. Eng. Rob. Res.en_US
dc.identifier.doi10.18178/ijmerr.6.3.237-241en_US
dc.identifier.endpage241en_US
dc.identifier.issn2278-0149en_US
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage237en_US
dc.identifier.urihttps://dx.doi.org/10.18178/ijmerr.6.3.237-241
dc.identifier.urihttps://hdl.handle.net/20.500.12395/35739
dc.identifier.volume6en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherInternational Journal of Mechanical Engineering and Robotics Researchen_US
dc.relation.ispartofInternational Journal of Mechanical Engineering and Robotics Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectBluff bodyen_US
dc.subjectCFDen_US
dc.subjectCubeen_US
dc.subjectTurbulence modelen_US
dc.subjectVorticiyen_US
dc.subjectWake regionen_US
dc.titleAssessment of turbulence models for flow around a surface-mounted cubeen_US
dc.typeArticleen_US

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