Spatiotemporal Resonances in Mixing of Open Viscous Fluids | Zendy

Fridolin Okkels | Zendy; P. Tabeling | Zendy

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Spatiotemporal Resonances in Mixing of Open Viscous Fluids

Author(s) -

Fridolin Okkels,

P. Tabeling

Publication year - 2004

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.92.038301

Subject(s) - mixing (physics) , micromixer , resonance (particle physics) , phenomenon , diffusion , physics , range (aeronautics) , statistical physics , viscous liquid , mechanics , classical mechanics , materials science , thermodynamics , quantum mechanics , composite material

In this Letter, we reveal a new dynamical phenomenon, called "spatiotemporal resonance," which is expected to take place in a broad range of viscous, periodically forced, open systems. The observation originates from a numerical and theoretical analysis of a micromixer, and is supported by preliminary experimental observations. The theoretical model nicely matches the numerical results, which again is supported by the experiment. Because of the general nature of the phenomenon, this phenomenon is not limited to microsystems. Because of the resonances, a slight tuning of the control parameters makes the mixer enhance the mixing, or suppress it, enhancing interfacial diffusion instead.

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