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dc.creatorĐuriš, Mihal
dc.creatorArsenijević, Zorana
dc.creatorGarić Grulović, Radmila
dc.creatorKaluđerović-Radoičić, Tatjana
dc.date.accessioned2020-07-20T21:01:35Z
dc.date.available2020-07-20T21:01:35Z
dc.date.issued2020
dc.identifier.issn1674-2001
dc.identifier.issn2210-4291
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/3598
dc.description.abstractIn this study, we applied the variational model to fluidization of small spherical particles. Fluidizationexperiments were carried out for spherical particles with 13 diameters between dp= 0.13 and 5.00 mm.We propose a generalized form of our variational model to predict the superficial velocity U and inter-phase drag coefficient ˇ by introducing an exponent n to describe the different dependences of the dragforce Fdon fluid velocity for different particle sizes (different flow regimes). By comparing the predictionswith the experimental results, we conclude that n=1 should be used for small particles (dp< 1 mm) andn = 2 for larger particles (dp> 1 mm). This conclusion is generalized by proposing n = 1 for particles withRet< 160 and n = 2 for particles with Ret> 160. The average mean absolute error was 5.49% in calculatingsuperficial velocity for different bed voidages using the modified variational model for all of the particlesexamined. The calculated values of ˇ were compared with values of literature models for particles withdp< 1.0 mm. The average mean absolute error of the modified variational model was 8.02% in calculatingˇ for different bed voidages for all of the particles examined.en
dc.language.isoensr
dc.publisherElseviersr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172022/RS//sr
dc.rightsrestrictedAccesssr
dc.sourceParticuologysr
dc.subjectCalculus of variationssr
dc.subjectIsoperimetric problemsr
dc.subjectBed expansionsr
dc.subjectDrag coefficientsr
dc.subjectFluidizationsr
dc.subjectSpherical particlessr
dc.titlePrediction of interphase drag coefficient and bed expansion using a variational model for fluidization of small spherical particlesen
dc.typearticlesr
dc.rights.licenseARRsr
dcterms.abstractКалуђеровић-Радоичић, Татјана; Ђуриш, Михал; Aрсенијевић, Зорана; Гарић Груловић, Радмила;
dc.rights.holderElseviersr
dc.citation.volume51
dc.citation.spage184
dc.citation.epage192
dc.citation.rankM22~
dc.identifier.doi10.1016/j.partic.2019.11.002
dc.identifier.scopus2-s2.0-85077152147
dc.identifier.wos000524974900019
dc.type.versionpublishedVersionsr


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