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Spinodal decomposition in binary fluids under shear flow

โœ Scribed by Yanan Wu; Hana Skrdla; Turab Lookman; Shiyi Chen

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
978 KB
Volume
239
Category
Article
ISSN
0378-4371

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โœฆ Synopsis

We discuss the effects of shear rates on the structure, rheology and kinetics of phase separation in binary fluids through numerical Langevin simulations in both two-and three-dimensions. Our major findings are as follows: (1) shear flow distorts the isotropy properties in normal spinodal decomposition. Under stronger shear, a string phase appears; (2) domains grow differently in directions parallel and perpendicular to the flow direction; (3) excess shear viscosities due to shear flow have a characteristic peak as a function of shear rates. We compare our findings with the experimental data and simulation results which do not incorporate hydrodynamics.

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