Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/11297
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Reis, N. | - |
dc.contributor.author | Vicente, A. A. | - |
dc.contributor.author | Teixeira, J. A. | - |
dc.date.accessioned | 2010-12-16T09:50:42Z | - |
dc.date.available | 2010-12-16T09:50:42Z | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | "Chemical Engineering and Processing : Process Intensification". ISSN 0255-2701.49:7 (2010) 793-803. | por |
dc.identifier.issn | 0255-2701 | por |
dc.identifier.uri | https://hdl.handle.net/1822/11297 | - |
dc.description.abstract | This paper deals with the measurement and modelling of axial liquid dispersion in a 4.5 mm internal diameter tube provided with smooth-periodic constrictions (meso-tube) in steady and oscillatory flow conditions. The residence time distribution (RTD) in the meso-tube was monitored for a range of fluid oscillation frequency (f) and amplitude (x0) at laminar flow. The RTD response was modelled with three hydrodynamic models: (i) tanks-in-series, (ii) tanks-in-series with backflow and (iii) plug flow with axial dispersion. The steady flow through the meso-tube at flow rates up to 21.30 ml/min resulted in broad RTDs, mainly due to the parabolic velocity profile. The use of fluid oscillations allowed a fine-control of the axial liquid dispersion in the meso-tube due to generation of secondary flow in the regions between the constrictions. The axial dispersion coefficient D was reduced by up to 13-fold in comparison with the steady flow situation. Values of x0 ≤ 1 mm and f = 10 Hz generally resulted in a maximum reduction in axial dispersion through, therefore maximum improvements in RTD. The tanks-in-series model was generally not capable of predicting RTDs in the meso-tube. The potential of this platform for the continuous, sustainable production of added-value products is herein demonstrated. | por |
dc.description.sponsorship | Fundação para a Ciência e a Tecnologia (FCT) | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.rights | openAccess | por |
dc.subject | Backmixing | por |
dc.subject | Smooth-periodic constrictions | por |
dc.subject | Oscillatory flow | por |
dc.subject | Meso-tube | por |
dc.subject | Liquid flow | por |
dc.subject | Continuous | por |
dc.title | Liquid backmixing in oscillatory flow through a periodically constricted meso-tube | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
sdum.number | 7 | por |
sdum.pagination | 793-803 | por |
sdum.publicationstatus | published | por |
sdum.volume | 49 | por |
oaire.citationStartPage | 793 | por |
oaire.citationEndPage | 803 | por |
oaire.citationIssue | 7 | por |
oaire.citationVolume | 49 | por |
dc.identifier.doi | 10.1016/j.cep.2010.01.014 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Chemical Engineering and Processing : Process Intensification | 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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Reis_Chemical Engineering and Processing Process Intensification.pdf | 802,49 kB | Adobe PDF | Ver/Abrir |