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Prediction of single particle settling velocities through liquid fluidized beds
dc.creator | Grbavčić, Željko | |
dc.creator | Arsenijević, Zorana | |
dc.creator | Garić Grulović, Radmila | |
dc.date.accessioned | 2019-01-30T17:21:45Z | |
dc.date.available | 2019-01-30T17:21:45Z | |
dc.date.issued | 2009 | |
dc.identifier.issn | 0032-5910 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/604 | |
dc.description.abstract | Single particle settling velocities through water fluidized beds of mono-sized glass spheres (dp = 0.645, 1.20, 1.94, 2.98 and 5 mm in diameter) were studied experimentally using a column, 40 mm in diameter. The settling spherical particles (Dp = 10 and 19.5 mm) had different densities (1237 to 8320 kg/m3), while the settling particles (Dp = 5 and 2.98 mm) were glass spheres. The pseudo-fluid model, which considers a liquid fluidized bed as a homogenous pseudo-fluid, predicts single particle settling velocities quite well if the ratio Dp/dp is larger than about 10. With decreasing ratio Dp/dp, the overall friction between the settling particle and the fluidized media increases. A method for predicting single particle settling velocities through a liquid fluidized bed is proposed and discussed. Following the approach of Van der Wielen et al. [L.A.M. Van der Wielen, M.H.H Van Dam, K.C.A.M. Van Luyben, On the relative motion of a particle in a swarm of different particles, Chem. Eng. Sci. 51 (2006) 995-1008], the overall friction is decomposed into a particle-fluid and a particle-particle component. The effective buoyancy force is calculated using the transition function proposed by Ruzicka [M.C. Ruzicka, On buoyancy in dispersion, Chem. Eng. Sci. 61 (2006) 2437-2446]. A simple model for predicting the collision force is proposed, as well as a correlation for the collision coefficient. The mean absolute deviation between the experimental and calculated slip velocities was 5.08%. | en |
dc.relation | Research Council of Serbia | |
dc.rights | restrictedAccess | |
dc.source | Powder Technology | |
dc.subject | Effective density | en |
dc.subject | Liquid fluidized bed | en |
dc.subject | Pseudo-fluid | en |
dc.subject | Settling velocity | en |
dc.title | Prediction of single particle settling velocities through liquid fluidized beds | en |
dc.type | article | |
dc.rights.license | ARR | |
dcterms.abstract | Aрсенијевић, Зорана; Грбавчић, Ж.Б.; Гарић Груловић, Радмила; | |
dc.citation.volume | 190 | |
dc.citation.issue | 3 | |
dc.citation.spage | 283 | |
dc.citation.epage | 291 | |
dc.citation.other | 190(3): 283-291 | |
dc.citation.rank | M21 | |
dc.identifier.doi | 10.1016/j.powtec.2008.08.005 | |
dc.identifier.scopus | 2-s2.0-60349094391 | |
dc.identifier.wos | 000264471800001 | |
dc.type.version | publishedVersion |