Fast measurements of the gas-liquid diffusion coefficient in the gaussian wake of a spherical bubble

Nicolas Dietrich; Jessica Francois; Mélanie Jimenez; Arnaud Cockx; Pascal Guiraud; Gilles Hébrard

doi:10.1002/ceat.201400471

Fast measurements of the gas-liquid diffusion coefficient in the gaussian wake of a spherical bubble

Nicolas Dietrich, Jessica Francois, Mélanie Jimenez, Arnaud Cockx, Pascal Guiraud, Gilles Hébrard

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Abstract

A fast method is proposed for determining the oxygen gas-liquid diffusion coefficient from measurements of the fluorescence quenching behind a bubble. The approach consists of capturing pictures of the concentration field at micro-scale in the laminar bubble wake. The Gaussian concentration profiles measured in the wake are demonstrated to be systematically equivalent to an instantaneous plane diffusion case. The approach permits to accurately evaluate the gas-liquid diffusivity in a very short time of around one second.

Original language	English
Pages (from-to)	941-946
Journal	Chemical Engineering and Technology
Volume	38
Issue number	5
Early online date	27 Mar 2015
DOIs	https://doi.org/10.1002/ceat.201400471
Publication status	Published - 2015

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abstract = "A fast method is proposed for determining the oxygen gas-liquid diffusion coefficient from measurements of the fluorescence quenching behind a bubble. The approach consists of capturing pictures of the concentration field at micro-scale in the laminar bubble wake. The Gaussian concentration profiles measured in the wake are demonstrated to be systematically equivalent to an instantaneous plane diffusion case. The approach permits to accurately evaluate the gas-liquid diffusivity in a very short time of around one second.",

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AU - Francois, Jessica

AU - Jimenez, Mélanie

AU - Cockx, Arnaud

AU - Guiraud, Pascal

AU - Hébrard, Gilles

PY - 2015

Y1 - 2015

N2 - A fast method is proposed for determining the oxygen gas-liquid diffusion coefficient from measurements of the fluorescence quenching behind a bubble. The approach consists of capturing pictures of the concentration field at micro-scale in the laminar bubble wake. The Gaussian concentration profiles measured in the wake are demonstrated to be systematically equivalent to an instantaneous plane diffusion case. The approach permits to accurately evaluate the gas-liquid diffusivity in a very short time of around one second.

AB - A fast method is proposed for determining the oxygen gas-liquid diffusion coefficient from measurements of the fluorescence quenching behind a bubble. The approach consists of capturing pictures of the concentration field at micro-scale in the laminar bubble wake. The Gaussian concentration profiles measured in the wake are demonstrated to be systematically equivalent to an instantaneous plane diffusion case. The approach permits to accurately evaluate the gas-liquid diffusivity in a very short time of around one second.

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DO - 10.1002/ceat.201400471

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JO - Chemical Engineering and Technology

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IS - 5

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Fast measurements of the gas-liquid diffusion coefficient in the gaussian wake of a spherical bubble

Abstract

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