Publication:
Analysis of the coherent and turbulent stresses of a numerically simulated rough wall pipe

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dc.citedby1
dc.contributor.authorChan L.en_US
dc.contributor.authorMacDonald M.en_US
dc.contributor.authorChung D.en_US
dc.contributor.authorHutchins N.en_US
dc.contributor.authorOoi A.en_US
dc.contributor.authorid57139456500en_US
dc.contributor.authorid56611327100en_US
dc.contributor.authorid34976574800en_US
dc.contributor.authorid15925318900en_US
dc.contributor.authorid7005905452en_US
dc.date.accessioned2023-05-29T06:38:49Z
dc.date.available2023-05-29T06:38:49Z
dc.date.issued2017
dc.descriptionBoundary layer flow; Boundary layers; Fluid mechanics; Quay walls; Reynolds number; Secondary flow; Wall flow; Boundary layer thickness; Dispersive components; Rough wall flows; Roughness elements; Topological features; Triple decomposition; Turbulent stress; Wall pipe; Atmospheric thermodynamicsen_US
dc.description.abstractA turbulent rough wall flow in a pipe is simulated using direct numerical simulation (DNS) where the roughness elements consist of explicitly gridded three-dimensional sinusoids. Two groups of simulations were conducted where the roughness semi-amplitude h+ and the roughness wavelength ?+ are systematically varied. The triple decomposition is applied to the velocity to separate the coherent and turbulent components. The coherent or dispersive component arises due to the roughness and depends on the topological features of the surface. The turbulent stress on the other hand, scales with the friction Reynolds number. For the case with the largest roughness wavelength, large secondary flows are observed which are similar to that of duct flows. The occurrence of these large secondary flows is due to the spanwise heterogeneity of the roughness which has a spacing approximately equal to the boundary layer thickness ?. � Published under licence by IOP Publishing Ltd.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo12011
dc.identifier.doi10.1088/1742-6596/822/1/012011
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85018387369
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85018387369&doi=10.1088%2f1742-6596%2f822%2f1%2f012011&partnerID=40&md5=450cb747202ba3a745f75cfec6204974
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/23254
dc.identifier.volume822
dc.publisherInstitute of Physics Publishingen_US
dc.relation.ispartofAll Open Access, Bronze
dc.sourceScopus
dc.sourcetitleJournal of Physics: Conference Series
dc.titleAnalysis of the coherent and turbulent stresses of a numerically simulated rough wall pipeen_US
dc.typeConference Paperen_US
dspace.entity.typePublication
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