Open Access

ARTICLE

The Concept of a Vibrational Cell for Studying the Interface Chemical Kinetics. Vibrational Flow Structure

A.A. Ivanova¹, V.G. Kozlov^1,2,3, D.A. Polezhaev¹, D. Pareau³, M. Stambouli³

1 Perm State Pedagogical University, Perm, Russia
2 Correspoding author. Email: kozlov@pspu.ru
3 Ecole Centrale Paris, France

Fluid Dynamics & Materials Processing 2008, 4(3), 211-220. https://doi.org/10.3970/fdmp.2008.004.211

Abstract

The problem for the optimization of mass-transfer on the interface of two immiscible liquids by means of vibrational hydromechanics is studied experimentally. A new vibrational cell of Lewis's type expressly conceived for such purposes is described. Flow is generated by activators in the form of disks inducing translational axial oscillations near the opposite end faces of the cavity. It is shown that such vibrating disks can lead to the onset of a large-scale toroidal whirlwind effectively mixing the liquid throughout the volume. According to the experiments, in particular, axisymmetrical radial flows are generated on both sides of the horizontal liquid interface (that remains steady). The structure and the intensity of these vibrational flows are investigated as a function of the amplitude and frequency of vibrations, and also the relative size of the activators. The method of vibrational excitation of large-scale streams is proven to be a relevant and effective strategy for efficient renewing of liquids near the interface and their simultaneous intermixing in the bulk.

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Keywords

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