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DY: Fachverband Dynamik und Statistische Physik

DY 30: Reaction-Diffusion Systems

DY 30.2: Vortrag

Donnerstag, 17. März 2011, 10:30–10:45, ZEU 118

A reactive-flow model of phase separation in fluid binary mixtures with continuously ramped temperature — Izabella Benczik and •Jürgen Vollmer — Max Planck Institute for Dynamics and Self-Organization, 37073 Göttingen

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.
I.J. Benczik and J. Vollmer, EPL 91 (2010) 36003.