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dc.contributor.authorRicardo, A. M.en
dc.contributor.authorGrigoriadis, D. G. E.en
dc.contributor.authorFerreira, R. M. L.en
dc.creatorRicardo, A. M.en
dc.creatorGrigoriadis, D. G. E.en
dc.creatorFerreira, R. M. L.en
dc.date.accessioned2019-05-06T12:24:26Z
dc.date.available2019-05-06T12:24:26Z
dc.date.issued2018
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/48767
dc.description.abstractWe address the task of modelling numerically turbulent flows within random arrays of circular cylinders, relevant for several industrial and environmental applications. Numerical simulations are employed to model infinite domains of randomly placed emergent and rigid cylinders validated by a laboratory database acquired by a PIV system. The main goals are: (i) to discuss the effect of the numerical domain size and the grid resolution on the first and second order momentsen
dc.description.abstractand (ii) to characterise the spatial distribution of mean flow and turbulence variables in the drag-wake controlled stratum. Five domains of different sizes (9–44 cylinders) and four grid resolutions were independently tested. The results show that the time-averaged velocity field and the Reynolds stress tensor were not significantly affected by the size of the tested numerical domains. The analysis of the grid resolution influence shows how the results improve with mesh refinement, while none of the tested meshes produces un-physical results. The present work provides guidance on the acceptable compromises, in terms of mesh resolution and domain size, when predicting, with eddy resolving computational fluid mechanics tools, first and second-order moments of turbulent flows within infinite arrays or randomly placed cylinders. © 2018 Elsevier Ltden
dc.language.isoengen
dc.sourceJournal of Fluids and Structuresen
dc.subjectFluid mechanicsen
dc.subjectReynolds numberen
dc.subjectNumerical modelsen
dc.subjectVelocityen
dc.subjectComputational fluid dynamicsen
dc.subjectDragen
dc.subjectLESen
dc.subjectWakesen
dc.subjectCircular cylindersen
dc.subjectComputational fluid mechanicsen
dc.subjectDomain sizeen
dc.subjectDrag-wake controlled stratumen
dc.subjectEnvironmental applicationsen
dc.subjectInfinite arrayen
dc.subjectInfinite arraysen
dc.subjectMesh generationen
dc.subjectRandom distributionen
dc.subjectReynolds stress tensorsen
dc.subjectSecond order momenten
dc.subjectTime-averaged velocity fielden
dc.titleNumerical simulations of turbulent flows within an infinite array of randomly placed cylindersen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1016/j.jfluidstructs.2018.04.004
dc.description.volume80
dc.description.startingpage245
dc.description.endingpage261
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.totalnumpages245-261
dc.gnosis.orcid0000-0002-8961-7394


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