Two-Fluid electroosmotic flow in microchannels

T. N. Wong, Y. Gao, C. Wang, C. Yang, N. T. Nguyen, J. C. Chai, K. T. Ooi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents theoretical and experimental investigations of the pressure-driven two-liquid flow in microchannels with the electroosmosis effect. For a fully developed, steady state, laminar flow of two liquids combined the pressure gradient, electroosmosis and surface charges at the liquid-liquid interface, we have derived analytical solutions that relate the velocity profiles and flow rates to the liquid holdup, the aspect ratio of the microchannel, the viscosity ratio of the two liquids and the externally applied electric field. It was shown that adjusting the externally applied electric field could control the fluid interface position precisely. The prediction from the proposed model compares very well with measured data.

Original languageEnglish
Title of host publication2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008
Pages97-101
Number of pages5
VolumePART A
DOIs
Publication statusPublished - 20 Aug 2008
Externally publishedYes
Event1st ASME Micro/Nanoscale Heat Transfer International Conference - Tainan, Taiwan, Province of China
Duration: 6 Jan 20089 Jan 2008
Conference number: 1

Conference

Conference1st ASME Micro/Nanoscale Heat Transfer International Conference
Abbreviated titleMNHT08
CountryTaiwan, Province of China
CityTainan
Period6/01/089/01/08

Fingerprint

microchannels
Microchannels
fluid flow
Flow of fluids
Liquids
liquids
Electroosmosis
liquid-liquid interfaces
electric fields
liquid flow
laminar flow
pressure gradients
aspect ratio
flow velocity
velocity distribution
adjusting
Electric fields
viscosity
fluids
Surface charge

Cite this

Wong, T. N., Gao, Y., Wang, C., Yang, C., Nguyen, N. T., Chai, J. C., & Ooi, K. T. (2008). Two-Fluid electroosmotic flow in microchannels. In 2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008 (Vol. PART A, pp. 97-101) https://doi.org/10.1115/MNHT2008-52054
Wong, T. N. ; Gao, Y. ; Wang, C. ; Yang, C. ; Nguyen, N. T. ; Chai, J. C. ; Ooi, K. T. / Two-Fluid electroosmotic flow in microchannels. 2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008. Vol. PART A 2008. pp. 97-101
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abstract = "This paper presents theoretical and experimental investigations of the pressure-driven two-liquid flow in microchannels with the electroosmosis effect. For a fully developed, steady state, laminar flow of two liquids combined the pressure gradient, electroosmosis and surface charges at the liquid-liquid interface, we have derived analytical solutions that relate the velocity profiles and flow rates to the liquid holdup, the aspect ratio of the microchannel, the viscosity ratio of the two liquids and the externally applied electric field. It was shown that adjusting the externally applied electric field could control the fluid interface position precisely. The prediction from the proposed model compares very well with measured data.",
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Wong, TN, Gao, Y, Wang, C, Yang, C, Nguyen, NT, Chai, JC & Ooi, KT 2008, Two-Fluid electroosmotic flow in microchannels. in 2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008. vol. PART A, pp. 97-101, 1st ASME Micro/Nanoscale Heat Transfer International Conference, Tainan, Taiwan, Province of China, 6/01/08. https://doi.org/10.1115/MNHT2008-52054

Two-Fluid electroosmotic flow in microchannels. / Wong, T. N.; Gao, Y.; Wang, C.; Yang, C.; Nguyen, N. T.; Chai, J. C.; Ooi, K. T.

2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008. Vol. PART A 2008. p. 97-101.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Two-Fluid electroosmotic flow in microchannels

AU - Wong, T. N.

AU - Gao, Y.

AU - Wang, C.

AU - Yang, C.

AU - Nguyen, N. T.

AU - Chai, J. C.

AU - Ooi, K. T.

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N2 - This paper presents theoretical and experimental investigations of the pressure-driven two-liquid flow in microchannels with the electroosmosis effect. For a fully developed, steady state, laminar flow of two liquids combined the pressure gradient, electroosmosis and surface charges at the liquid-liquid interface, we have derived analytical solutions that relate the velocity profiles and flow rates to the liquid holdup, the aspect ratio of the microchannel, the viscosity ratio of the two liquids and the externally applied electric field. It was shown that adjusting the externally applied electric field could control the fluid interface position precisely. The prediction from the proposed model compares very well with measured data.

AB - This paper presents theoretical and experimental investigations of the pressure-driven two-liquid flow in microchannels with the electroosmosis effect. For a fully developed, steady state, laminar flow of two liquids combined the pressure gradient, electroosmosis and surface charges at the liquid-liquid interface, we have derived analytical solutions that relate the velocity profiles and flow rates to the liquid holdup, the aspect ratio of the microchannel, the viscosity ratio of the two liquids and the externally applied electric field. It was shown that adjusting the externally applied electric field could control the fluid interface position precisely. The prediction from the proposed model compares very well with measured data.

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KW - Microchannel

KW - Two-liquid flow

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Wong TN, Gao Y, Wang C, Yang C, Nguyen NT, Chai JC et al. Two-Fluid electroosmotic flow in microchannels. In 2008 Proceedings of the ASME Micro/Nanoscale Heat Transfer International Conference, MNHT 2008. Vol. PART A. 2008. p. 97-101 https://doi.org/10.1115/MNHT2008-52054