Comparative PIV and LDA studies of Newtonian and non-Newtonian flows in an agitated tank

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dc.citation.issue3
dc.citation.volume72
dc.contributor.authorStory A
dc.contributor.authorJaworski Z
dc.contributor.authorSimons MJH
dc.contributor.authorNowak E
dc.date.available2018-03
dc.date.available2017-09-24
dc.date.issued2017-10-04
dc.description.abstractThe paper presents results of an experimental study of the fluid velocity field in a stirred tank equipped with a Prochem Maxflo T (PMT) type impeller which was rotating at a constant frequency of N = 4.1 or 8.2 s−1 inducing transitional (Re = 499 or 1307) or turbulent (Re = 2.43 × 104) flow of the fluid. The experiments were performed for a Newtonian fluid (water) and a non-Newtonian fluid (0.2 wt% aqueous solution of carboxymethyl cellulose, CMC) exhibiting mild viscoelastic properties. Measurements were carried out using laser light scattering on tracer particles which follow the flow (2-D PIV). For both the water and the CMC solution one primary and two secondary circulation loops were observed within the fluid volume; however, the secondary loops were characterized by much lower intensity. The applied PMT-type impeller produced in the Newtonian fluid an axial primary flow, whilst in the non-Newtonian fluid the flow was more radial. The results obtained in the form of the local mean velocity components were in satisfactory agreement with the literature data from LDA. Distribution of the shear rate in the studied system was also analyzed. For the non-Newtonian fluid an area was computed where the elastic force dominates over the viscous one. The area was nearly matching the region occupied by the primary circulation loop.
dc.description.publication-statusPublished
dc.format.extent593 - 602
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000425783100008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationCHEMICAL PAPERS, 2018, 72 (3), pp. 593 - 602
dc.identifier.doi10.1007/s11696-017-0307-4
dc.identifier.eissn1336-9075
dc.identifier.elements-id392234
dc.identifier.harvestedMassey_Dark
dc.identifier.issn2585-7290
dc.publisherSpringer Verlag
dc.relation.isPartOfCHEMICAL PAPERS
dc.relation.urihttps://link.springer.com/article/10.1007/s11696-017-0307-4
dc.rightsThe Author(s) 2017. This article is an open access publication
dc.subjectParticle image velocimetry
dc.subjectViscoelastic fluid
dc.subjectStirred tank
dc.subjectPMT impeller
dc.subjectLaser Doppler anemometry
dc.subject.anzsrc03 Chemical Sciences
dc.titleComparative PIV and LDA studies of Newtonian and non-Newtonian flows in an agitated tank
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Food and Advanced Technology
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