https://doi.org/10.1007/s100510050020
Phase-ordering dynamics of binary mixtures with field-dependent mobility in shear flow
Istituto Nazionale per la Fisica della Materia (INFM),
Unità di Bari, and
Dipartimento di Fisica dell'Università di Bari, and
Istituto Nazionale di Fisica Nucleare, Sezione di Bari,
via Amendola 173, 70126 Bari, Italy
Corresponding author: a lamura@ba.infn.it
Received:
13
April
1999
Published online: 15 January 2000
The effect of shear flow on the phase-ordering dynamics of a binary mixture with field-dependent mobility is investigated. The problem is addressed in the context of the time-dependent Ginzburg-Landau equation with an external velocity term, studied in self-consistent approximation. Assuming a scaling ansatz for the structure factor, the asymptotic behavior of the observables in the scaling regime can be analytically calculated. All the observables show log-time periodic oscillations which we interpret as due to a cyclical mechanism of stretching and break-up of domains. These oscillations are damped as consequence of the vanishing of the mobility in the bulk phase.
PACS: 47.20.Hw – Morphological instability; phase changes / 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 83.50.Ax – Steady shear flows
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
