Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5948
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dc.contributor.authorElçi, Şebnem-
dc.contributor.authorEkmekçi, Hüseyin Burak-
dc.date.accessioned2017-07-18T11:50:32Z-
dc.date.available2017-07-18T11:50:32Z-
dc.date.issued2016-
dc.identifier.citationElçi, Ş., and Ekmekçi, H. B. (2016). Observational and numerical methods for quantifying and modeling of turbulence in a stratified reservoir. Journal of Applied Fluid Mechanics, 9(4), 1603-1614.en_US
dc.identifier.issn1735-3572-
dc.identifier.issn1735-3645-
dc.identifier.urihttp://hdl.handle.net/11147/5948-
dc.identifier.urihttps://doi.org/10.18869/acadpub.jafm.68.235.25112-
dc.description.abstractThe interplay between stratification and shear in lakes controls the vertical mixing, which is the mostimportant mechanism affecting the transport of heat, salt, momentum and suspended and dissolvedsubstances. This study attempts to quantify and characterize the turbulence from direct measurementsconducted in a reservoir. A 3D numerical model is used to investigate the water column hydrodynamics forthe duration of measurements and the performance of various turbulence models used in the CFD model areinvestigated via simulation of mixing in the reservoir. The drawdown curves produced by the turbulencemodels are formulized through linear equations. Although, use of different turbulence models do not havesignificant effects on the flow hydrodynamics away from the intake structure; significant effects especially onturbulence kinetic energy production are observed at the orifice. Therefore, for simulation of withdrawalflow, either use of shear stress transport (SST) k-omega models solving equations all the way to the wall or kepsilonmodels with the nonequilibrium wall function is recommended to account for the changes in thepressure gradient. In this study, the methods using quantified turbulent characteristics of the flow toreformulate the Stokes' settling velocity to be applied in turbulent flows are also investigated. An approach topredict setting velocity in turbulent flows that utilizes acoustic Doppler instruments for quantification ofturbulent characteristics is presented. Modification of the Stokes' settling velocity with thenondimensionalized turbulent kinetic energy production profiles lead better results than other turbulencecharacteristics (buoyancy flux and by Richardson number flux) widely used in characterizing turbulentmixing.en_US
dc.description.sponsorshipIzmir Institute of Technology Research Fund (IYTE-2012-03); Turkish Science and Technological Research Council (114M019)en_US
dc.language.isoenen_US
dc.publisherIsfahan University of Technologyen_US
dc.relationTürbülanslı Akımlarda Parçacık Çökelme Hızının Tahminine Yönelik Bir Yaklaşım Geliştirilmesi ve Farklı Türbülans Modellerinin Uygunluğunun Araştırılmasıen_US
dc.relation.ispartofJournal Of Applied Fluid Mechanicsen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSettling velocitiesen_US
dc.subjectStratified reservoirsen_US
dc.subjectTurbulence modelsen_US
dc.subjectTurbulent mixingen_US
dc.subjectVertical mixingen_US
dc.titleObservational and numerical methods for quantifying and modeling of turbulence in a stratified reservoiren_US
dc.typeArticleen_US
dc.authorid0000-0002-9306-1042en_US
dc.institutionauthorElçi, Şebnemtr
dc.institutionauthorEkmekçi, Hüseyin Buraktr
dc.departmentİzmir Institute of Technology. Civil Engineeringen_US
dc.identifier.volume9en_US
dc.identifier.issue4en_US
dc.identifier.startpage1603en_US
dc.identifier.endpage1614en_US
dc.identifier.wosWOS:000378286200005en_US
dc.identifier.scopus2-s2.0-84975761288en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıtr
dc.identifier.doi10.18869/ACADPUB.JAFM.68.235.25112-
dc.relation.grantno114M019-
dc.identifier.scopusqualityQ2-
item.fulltextWith Fulltext-
item.cerifentitytypePublications-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.author.dept03.03. Department of Civil Engineering-
Appears in Collections:Civil Engineering / İnşaat Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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