A reactive-flow model of phase separation in fluid binary mixtures with continuously ramped temperature

We suggest to revisit the phase separation of binary mixtures subjected to a sustained change of temperature from the point of view of reactive flows. Exploiting this new perspective, we describe the demixing dynamics by a spatial model of advection-reaction-diffusion completed with nucleation and c...

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Bibliographic Details
Published in:Europhysics letters 2010-08, Vol.91 (3), p.36003
Main Authors: Benczik, I. J, Vollmer, J
Format: Article
Language:English
Subjects:
05.45.-a
47.70.Fw
64.70.Ja
Binary mixtures
Computational fluid dynamics
Droplets
Dynamic tests
Dynamics
Mathematical models
Nucleation
Phase separation
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Summary:We suggest to revisit the phase separation of binary mixtures subjected to a sustained change of temperature from the point of view of reactive flows. Exploiting this new perspective, we describe the demixing dynamics by a spatial model of advection-reaction-diffusion completed with nucleation and coaguation of droplets. In this approach several features of the dynamics —in particular an oscillatory variation of the droplet density— become numerically and analytically accessible. Hence, this model helps to clarify why the oscillation frequency is hardly affected by the flow.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/91/36003