http://www.cnr.it/ontology/cnr/individuo/prodotto/ID31810
Analysis of start-up dynamics of a single drop through an ellipsoidal drop model for non-Newtonian fluids (Articolo in rivista)
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- Analysis of start-up dynamics of a single drop through an ellipsoidal drop model for non-Newtonian fluids (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Alternative label
P.L.Maffettone, F.Greco, M.Simeone, S.Guido (2005)
Analysis of start-up dynamics of a single drop through an ellipsoidal drop model for non-Newtonian fluids
in Journal of non-Newtonian fluid mechanics (Print)
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- P.L.Maffettone, F.Greco, M.Simeone, S.Guido (literal)
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- (Maffettone ) Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, ITALIA
(Greco) Istituto per i Materiali Compositi e Biomedici (IMCB) CNR
Piazzale Tecchio 80, 80125 Napoli, ITALIA
(Simeone, Guido) Dipartimento di Ingegneria chimica, Università di Napoli Federico II
Piazzale Tecchio 80, 80125 Napoli, ITALIA (literal)
- Titolo
- Analysis of start-up dynamics of a single drop through an ellipsoidal drop model for non-Newtonian fluids (literal)
- Abstract
- A phenomenological model for the dynamics of a single drop immersed in an immiscible matrix is examined, the two incompressible component liquids being in general viscoelastic. Drop shape is assumed to be ellipsoidal. Transient predictions upon flow start-up are compared with experimental data in two different flow fields, for the case of a a Newtonian drop in a viscoelastic matrix. Shear flow data are obtained from experiments performed in a parallel plate apparatus, by using a Boger fluid as the continuous phase. Planar elongation data are taken from the literature. The phenomenological model is also tested by comparing its predictions with finite element simulations found in the literature, based on Oldroyd fluids. Model predictions are in general good agreement both with experiments and simulations. (literal)
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