Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/5684
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Dias, Ricardo P. | - |
dc.contributor.author | Teixeira, J. A. | - |
dc.contributor.author | Mota, M. | - |
dc.contributor.author | Yelshin, Alexander | - |
dc.date.accessioned | 2006-10-19T15:38:07Z | - |
dc.date.available | 2006-10-19T15:38:07Z | - |
dc.date.issued | 2006-09 | - |
dc.identifier.citation | "Separation and Purification Technology". ISSN 1383-5866. 51:2 (Sept. 2006) 180-184. | eng |
dc.identifier.issn | 1383-5866 | eng |
dc.identifier.uri | https://hdl.handle.net/1822/5684 | - |
dc.description.abstract | The importance of particle size ratio and particle composition in the properties of a mixed bed is well known. Nevertheless, the dependence of the bed channel tortuosity T on the porosity ε in the form T=1/εn, where n is assumed to be a constant, shows that the value of n depends on the properties of the packed bed. For loose packing, experimental data for binary mixtures of glass beads of a size ratio from 1 up to 53.8 was analysed in terms of porosity, tortuosity and permeability. The packing procedure was performed without intensive compacting methods e.g. vibration, etc. Obtained results show that the parameter n is a function of the volume fraction of large particles xD and, for spherical particles, lies in the range 0.4–0.5. The explanation for this variation is (1) a distortion effect on the small particles arrangement occurring near the large particle surface; (2) in the region of minimum porosity, near contact points of large particles, the occurrence of dead zones that are free of small particles. A relationship accounting for this effect is proposed that may be useful for the analysis of transport phenomena in granular bed filters, chromatographic columns, etc. | eng |
dc.description.sponsorship | Fundação para a Ciência e a Tecnologia FCT); FEDER | por |
dc.language.iso | eng | eng |
dc.publisher | Elsevier 1 | eng |
dc.relation | info:eu-repo/grantAgreement/FCT/POCI/37500/PT | - |
dc.rights | openAccess | eng |
dc.subject | Particle mixtures | eng |
dc.subject | Binary spheres packing | eng |
dc.subject | Size ratio | eng |
dc.subject | Porosity | eng |
dc.subject | Tortuosity | eng |
dc.title | Tortuosity variation in a low density binary particulate bed | eng |
dc.type | article | por |
dc.peerreviewed | yes | eng |
sdum.number | 2 | eng |
sdum.pagination | 180-184 | eng |
sdum.publicationstatus | published | eng |
sdum.volume | 51 | eng |
oaire.citationStartPage | 180 | por |
oaire.citationEndPage | 184 | por |
oaire.citationIssue | 2 | por |
oaire.citationVolume | 51 | por |
dc.identifier.doi | 10.1016/j.seppur.2006.01.010 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Separation and Purification Technology | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Sep.Pur.Technol[1].pdf | 380,17 kB | Adobe PDF | Ver/Abrir |