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Sensors 2016, 16(8), 1233; doi:10.3390/s16081233

Optical Feedback Interferometry for Velocity Measurement of Parallel Liquid-Liquid Flows in a Microchannel

1
LAAS-CNRS, Université de Toulouse, CNRS, INP, Toulouse F-31400, France
2
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Calle 30 No. 502, Miramar, La Habana 11300, Cuba
3
Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 4 allée Emile Monso, BP 84234, Toulouse F-31432, France
4
Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Mexico
5
Cátedra de Sistemas Complejos Henri Poincaré, Universidad de La Habana, La Habana 10400, Cuba
*
Author to whom correspondence should be addressed.
Academic Editors: Remco J. Wiegerink and Luis J. Fernandez
Received: 8 June 2016 / Revised: 19 July 2016 / Accepted: 2 August 2016 / Published: 4 August 2016
(This article belongs to the Special Issue Microfluidic Sensors and Control Devices)
View Full-Text   |   Download PDF [2021 KB, uploaded 4 August 2016]   |  

Abstract

Optical feedback interferometry (OFI) is a compact sensing technique with recent implementation for flow measurements in microchannels. We propose implementing OFI for the analysis at the microscale of multiphase flows starting with the case of parallel flows of two immiscible fluids. The velocity profiles in each phase were measured and the interface location estimated for several operating conditions. To the authors knowledge, this sensing technique is applied here for the first time to multiphase flows. Theoretical profiles issued from a model based on the Couette viscous flow approximation reproduce fairly well the experimental results. The sensing system and the analysis presented here provide a new tool for studying more complex interactions between immiscible fluids (such as liquid droplets flowing in a microchannel). View Full-Text
Keywords: optical feedback interferometry; velocimetry; microfluidics; parallel two-phase flows optical feedback interferometry; velocimetry; microfluidics; parallel two-phase flows
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ramírez-Miquet, E.E.; Perchoux, J.; Loubière, K.; Tronche, C.; Prat, L.; Sotolongo-Costa, O. Optical Feedback Interferometry for Velocity Measurement of Parallel Liquid-Liquid Flows in a Microchannel. Sensors 2016, 16, 1233.

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