Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/68263
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dc.contributor.authorGarcia-Rojas, B.
dc.contributor.authorBautista, F.
dc.contributor.authorPuig, J.E.
dc.contributor.authorManero, O.
dc.date.accessioned2015-11-19T18:55:18Z-
dc.date.available2015-11-19T18:55:18Z-
dc.date.issued2009
dc.identifier.urihttp://hdl.handle.net/20.500.12104/68263-
dc.description.abstractIn this work, the generalized Bautista-Manero-Puig (BMP) model derived from extended irreversible thermodynamics (EIT) is used to analyze the coupling of stress with concentration in complex fluids. It is shown that this model is consistent with previous analyses that predict mechanical and thermodynamic instabilities in the shear-banding regime. In particular, for simple shear flows, the model presented here predicts the structure factor in the plane of shear and the onset of instabilities in the gradient-vorticity plane. Furthermore, the model predicts distinctive features of the models of Brochard-de Gennes and Schmitt as particular cases. For finite stress relaxation time, the generalized BMP model allows the prediction of transient structures normal to the vorticity axis. Instabilities are predicted in the regions of high viscosity, which suggest that the induction of a more viscous phase in a shear-thickening solution can lead the system to instability, in this case, the layering is predicted perpendicular to the vorticity direction. These transient structural patterns within the shear-thickening region correspond to spinodal phase separation. When the mechanical and thermodynamic instabilities are uncoupled, the model predictions agree with experiments and with the transient-gel model of Brochard and de Gennes. © 2009 The American Physical Society.
dc.titleThermodynamic approach to rheology of complex fluids: Flow-concentration coupling
dc.typeArticle
dc.identifier.doi10.1103/PhysRevE.80.036313
dc.relation.ispartofjournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
dc.relation.ispartofvolume80
dc.relation.ispartofissue3
dc.contributor.affiliationGarcía-Rojas, B., Instituto de Investigaciones en Materiales, Facultad de Química, UNAM, A.P. 70-360, México, Distrito Federal 04510, Mexico; Bautista, F., Departamentos de Física and Ingeniería Química, Universidad de Guadalajara, Boulevard M. García Barragán 1451, Guadalajara, Jal 44430, Mexico; Puig, J.E., Departamentos de Física and Ingeniería Química, Universidad de Guadalajara, Boulevard M. García Barragán 1451, Guadalajara, Jal 44430, Mexico; Manero, O., Instituto de Investigaciones en Materiales, Facultad de Química, UNAM, A.P. 70-360, México, Distrito Federal 04510, Mexico
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dc.relation.isReferencedByWOS
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