Sibillo, Vincenzo (2006) Morfologia dei fluidi complessi: “Effetti viscoelastici sulla deformazione di gocce di blend polimerici in flusso di shear tra piatti paralleli”. [Tesi di dottorato] (Unpublished)

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Item Type: Tesi di dottorato
Language: English
Title: Morfologia dei fluidi complessi: “Effetti viscoelastici sulla deformazione di gocce di blend polimerici in flusso di shear tra piatti paralleli”
Creators:
CreatorsEmail
Sibillo, VincenzoUNSPECIFIED
Date: 2006
Date Type: Publication
Number of Pages: 103
Institution: Università degli Studi di Napoli Federico II
Department: Ingegneria chimica
PHD name: Ingegneria chimica, dei materiali e della produzione
PHD cycle: 18
PHD Coordinator:
nameemail
Grizzuti, NinoUNSPECIFIED
Tutor:
nameemail
Guido, StefanoUNSPECIFIED
Date: 2006
Number of Pages: 103
Uncontrolled Keywords: Viscoelasticity, Drop shape, Shear flow
MIUR S.S.D.: Area 09 - Ingegneria industriale e dell'informazione > ING-IND/24 - Principi di ingegneria chimica
Date Deposited: 31 Jul 2008
Last Modified: 30 Apr 2014 19:23
URI: http://www.fedoa.unina.it/id/eprint/668

Abstract

A complete three-dimensional shape of an isolated drop in an immiscible liquid phase undergoing simple shear flow with non Newtonian fluids was investigated by contrast-enhanced optical microscopy. Drop was observed either along the vorticity direction or along the velocity gradient direction of the shear flow. The effects on drop deformation and break up of the viscoelastic content of the liquid phases were investigated. Two situation of a viscoelastic matrix with a Newtonian drop and of viscoelastic drop in a Newtonian matrix are considered. When possible my data are compared with theoretical or phenomenological predictions. Finally I investigated also the influence of confinement on the steady state of the drop in a regime where drop diameter is comparable to gap width between the shearing parallel plates.

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