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Coherent structures in oscillating turbulent boundary layers over a fixed rippled bed

dc.contributor.authorGrigoriadis, D. G. E.en
dc.contributor.authorBalaras, E.en
dc.contributor.authorDimas, A. A.en
dc.creatorGrigoriadis, D. G. E.en
dc.creatorBalaras, E.en
dc.creatorDimas, A. A.en
dc.date.accessioned2019-05-06T12:23:39Z
dc.date.available2019-05-06T12:23:39Z
dc.date.issued2013
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/48380
dc.description.abstractCoherent structures generated by oscillating turbulent boundary layers with or without a unidirectional current over a fixed, rippled bed are presented. The effect of ripple height and current intensity on the characteristics of these structures was investigated using a series of large-eddy simulations performed at Re α = 23,163. These flows are typical in coastal regions where complex wave-current interactions occur. A cartesian flow solver was used with the rippled bed represented using the immersed boundary (IMB) method. Results are presented for three ripple steepness values and two current magnitudes. Three different types of coherent structures were identified with their size, shape and evolution largely depending on ripple steepness, while, their potential effect on sediment transport is discussed. © 2013 Springer Science+Business Media Dordrecht.en
dc.language.isoengen
dc.sourceFlow, Turbulence and Combustionen
dc.subjectFinite difference methoden
dc.subjectTurbulent flowen
dc.subjectTurbulenceen
dc.subjectComputational fluid dynamicsen
dc.subjectImmersed boundary methodsen
dc.subjectLarge eddy simulationen
dc.subjectLESen
dc.subjectSediment transporten
dc.subjectCoherent structureen
dc.subjectCoherent structuresen
dc.subjectCurrent magnitudesen
dc.subjectFinite difference methodsen
dc.subjectImmersed boundaryen
dc.subjectImmersed boundary methoden
dc.subjectOscillatory boundary layeren
dc.subjectOscillatory boundary layersen
dc.subjectTurbulent boundary layersen
dc.subjectWave current interactionen
dc.titleCoherent structures in oscillating turbulent boundary layers over a fixed rippled beden
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1007/s10494-013-9489-1
dc.description.volume91
dc.description.startingpage565
dc.description.endingpage585
dc.author.facultyΠολυτεχνική Σχολή / Faculty of Engineering
dc.author.departmentΤμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering
dc.type.uhtypeArticleen
dc.contributor.orcidGrigoriadis, D. G. E. [0000-0002-8961-7394]
dc.description.totalnumpages565-585
dc.gnosis.orcid0000-0002-8961-7394


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