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Prediction of interphase drag coefficient and bed expansion using a variational model for fluidization of small spherical particles
dc.creator | Đuriš, Mihal | |
dc.creator | Arsenijević, Zorana | |
dc.creator | Garić Grulović, Radmila | |
dc.creator | Kaluđerović-Radoičić, Tatjana | |
dc.date.accessioned | 2020-07-20T21:01:35Z | |
dc.date.available | 2020-07-20T21:01:35Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 1674-2001 | |
dc.identifier.issn | 2210-4291 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/3598 | |
dc.description.abstract | In 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.iso | en | sr |
dc.publisher | Elsevier | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172022/RS// | sr |
dc.rights | restrictedAccess | sr |
dc.source | Particuology | sr |
dc.subject | Calculus of variations | sr |
dc.subject | Isoperimetric problem | sr |
dc.subject | Bed expansion | sr |
dc.subject | Drag coefficient | sr |
dc.subject | Fluidization | sr |
dc.subject | Spherical particles | sr |
dc.title | Prediction of interphase drag coefficient and bed expansion using a variational model for fluidization of small spherical particles | en |
dc.type | article | sr |
dc.rights.license | ARR | sr |
dcterms.abstract | Калуђеровић-Радоичић, Татјана; Ђуриш, Михал; Aрсенијевић, Зорана; Гарић Груловић, Радмила; | |
dc.rights.holder | Elsevier | sr |
dc.citation.volume | 51 | |
dc.citation.spage | 184 | |
dc.citation.epage | 192 | |
dc.citation.rank | M22~ | |
dc.identifier.doi | 10.1016/j.partic.2019.11.002 | |
dc.identifier.scopus | 2-s2.0-85077152147 | |
dc.identifier.wos | 000524974900019 | |
dc.type.version | publishedVersion | sr |