Publication
Friction factors of power-law fluids in chevron-type plate heat exchangers
| dc.contributor.author | Fernandes, Carla S. | |
| dc.contributor.author | Dias, Ricardo P. | |
| dc.contributor.author | Nóbrega, João M. | |
| dc.contributor.author | Maia, João M. | |
| dc.date.accessioned | 2008-09-03T11:20:36Z | |
| dc.date.available | 2008-09-03T11:20:36Z | |
| dc.date.issued | 2008 | |
| dc.description.abstract | In the present work laminar flows of Newtonian and power-law fluids through cross-corrugated chevron-type plate heat exchangers (PHEs) are numerically studied in terms of the geometry of the channels. The plates area enlargement factor was a typical one (1.17), the corrugation angle, β, varied between 30° and 60° and the flow index behaviour, n, between 0.25 and 1. Single friction curves fReg = K for both Newtonian and non-Newtonian fluids are proposed for each β by developing an adequate definition of the generalised Reynolds number, Reg. The coefficient K compares well with experimental data, for all (seven) values of β, and depends on the tortuosity coefficient, τ. It was found that, for each β, τ decreases with the decrease of n. Food fluids are frequently processed in PHEs and usually behave as non-Newtonian fluids. This study can be useful in engineering applications as well as in the characterization of transport phenomena in PHEs. | en |
| dc.identifier.citation | Fernandes, Carla S.; Dias, Ricardo P.; Nóbrega, João M.; Maia, João M. (2008). Friction factors of power-law fluids in chevron-type plate heat exchangers. Journal of Food Engineering. ISSN 0260-8774. 89:4, p.441-447 | en |
| dc.identifier.doi | 10.1016/j.jfoodeng.2008.05.022 | |
| dc.identifier.issn | 0260-8774 | |
| dc.identifier.uri | http://hdl.handle.net/10198/730 | |
| dc.language.iso | eng | en |
| dc.peerreviewed | yes | |
| dc.publisher | Elsevier | en |
| dc.subject | Plate heat exchangers | en |
| dc.subject | Power-law fluids | en |
| dc.subject | Generalised Reynolds number | en |
| dc.subject | Tortuosity | en |
| dc.subject | Friction factor | en |
| dc.title | Friction factors of power-law fluids in chevron-type plate heat exchangers | en |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| person.familyName | Fernandes | |
| person.familyName | Dias | |
| person.givenName | Carla S. | |
| person.givenName | Ricardo P. | |
| person.identifier.ciencia-id | F319-3D67-9DB7 | |
| person.identifier.orcid | 0000-0002-3138-7493 | |
| person.identifier.orcid | 0000-0003-1503-998X | |
| person.identifier.rid | A-4269-2015 | |
| person.identifier.scopus-author-id | 8253740700 | |
| person.identifier.scopus-author-id | 7102885151 | |
| rcaap.rights | openAccess | |
| rcaap.type | article | en |
| relation.isAuthorOfPublication | 8f9cf139-cfef-4025-ba87-56425618bc6e | |
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