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dc.creatorArsenijević, Zorana
dc.creatorGrbavčić, Željko
dc.creatorGarić Grulović, Radmila
dc.creatorBošković-Vragolović, Nevenka
dc.date.accessioned2019-01-30T17:24:19Z
dc.date.available2019-01-30T17:24:19Z
dc.date.issued2010
dc.identifier.issn0032-5910
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/721
dc.description.abstractExperimental results were obtained on the steady settling of spheres in quiescent media in a range of cylindrical tubes to ascertain the wall effects over a relatively wide range of Reynolds number values. For practical considerations, the retardation effect is important when the ratio of the particle diameter to the tube diameter (lambda) is higher than about 0.05. A new empirical correlation is presented which covers a Reynolds number range Re = 53-15,100 and a particle to tube diameter ratio lambda LT 0.88. The absolute mean deviation between the experimental data and the presented correlation was 1.9%. The well-known correlations of Newton, Munroe and Di Felice agree with the presented data reasonably well. For steady settling of spheres in a counter-current water flow, the slip velocity remains practically the same as in quiescent media. However, for rising spheres in a co-current water flow, the slip velocity decreases with increasing co-current water velocity, i.e., the wall factor decreases with increasing co-current water velocity. Consequently, the drag coefficient for rising particles in co-current water flow increases with increasing water velocity.en
dc.publisherElsevier Science Sa, Lausanne
dc.relationResearch Council of Serbia
dc.rightsrestrictedAccess
dc.sourcePowder Technology
dc.subjectWall effectsen
dc.subjectDrag coefficienten
dc.subjectSpherical particleen
dc.subjectTerminal settling velocityen
dc.subjectRising velocityen
dc.titleWall effects on the velocities of a single sphere settling in a stagnant and counter-current fluid and rising in a co-current fluiden
dc.typearticle
dc.rights.licenseARR
dcterms.abstractБошковић-Враголовић, Невенка; Грбавциц, З. Б.; Aрсенијевић, Зорана; Гарић Груловић, Радмила;
dc.citation.volume203
dc.citation.issue2
dc.citation.spage237
dc.citation.epage242
dc.citation.other203(2): 237-242
dc.citation.rankM21
dc.identifier.doi10.1016/j.powtec.2010.05.013
dc.identifier.rcubConv_2545
dc.identifier.scopus2-s2.0-77955509438
dc.identifier.wos000281461700013
dc.type.versionpublishedVersion


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