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Conference Paper: Electroosmotic flow of a power-law fluid in a non-uniform microchannel

TitleElectroosmotic flow of a power-law fluid in a non-uniform microchannel
Authors
Issue Date2014
PublisherHong Kong Society of Theoretical and Applied Mechanics (HKSTAM).
Citation
The 18th Annual Conference of Hong Kong Society of Theoretical and Applied Mechanics (HKSTAM) & the 10th Shanghai-Hong Kong Forum on Mechanics and Its Application, Hong Kong, China, 15 March, 2014. In the Proceedings of The 18th Annual Conference of HKSTAM & the 10th Shanghai-Hong Kong Forum on Mechanics and Its Application, 2014, p. 35 How to Cite?
AbstractAn analytical model is presented for electrokinetic flow of a power-law fluid through a slit channel with gradually varying channel height and wall potential. With the near-wall depletion effect taken into account, the present model is based on the lubrication approximation and the use of the Helmholtz–Smoluchowski slip boundary condition. It is found that interaction between the wall undulation and the wall potential modulation, under the combined action of hydrodynamic and electric forcings, may give rise to a rich set of nonlinear behaviors for flow of a non-Newtonian fluid in the channel. In particular, the linear superposition of flow components due separately to the two forcings is found to work only for a strictly uniform channel; non-uniformity in channel height or wall potential distribution will spoil such linearity.
DescriptionSession C1
Persistent Identifierhttp://hdl.handle.net/10722/195941

 

DC FieldValueLanguage
dc.contributor.authorNg, COen_US
dc.contributor.authorQI, Cen_US
dc.date.accessioned2014-03-21T02:25:22Z-
dc.date.available2014-03-21T02:25:22Z-
dc.date.issued2014en_US
dc.identifier.citationThe 18th Annual Conference of Hong Kong Society of Theoretical and Applied Mechanics (HKSTAM) & the 10th Shanghai-Hong Kong Forum on Mechanics and Its Application, Hong Kong, China, 15 March, 2014. In the Proceedings of The 18th Annual Conference of HKSTAM & the 10th Shanghai-Hong Kong Forum on Mechanics and Its Application, 2014, p. 35en_US
dc.identifier.urihttp://hdl.handle.net/10722/195941-
dc.descriptionSession C1-
dc.description.abstractAn analytical model is presented for electrokinetic flow of a power-law fluid through a slit channel with gradually varying channel height and wall potential. With the near-wall depletion effect taken into account, the present model is based on the lubrication approximation and the use of the Helmholtz–Smoluchowski slip boundary condition. It is found that interaction between the wall undulation and the wall potential modulation, under the combined action of hydrodynamic and electric forcings, may give rise to a rich set of nonlinear behaviors for flow of a non-Newtonian fluid in the channel. In particular, the linear superposition of flow components due separately to the two forcings is found to work only for a strictly uniform channel; non-uniformity in channel height or wall potential distribution will spoil such linearity.-
dc.languageengen_US
dc.publisherHong Kong Society of Theoretical and Applied Mechanics (HKSTAM).en_US
dc.relation.ispartofAnnual Conference of Hong Kong Society of Theoretical and Applied Mechanics & Shanghai-Hong Kong Forum on Mechanics and Its Applicationen_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleElectroosmotic flow of a power-law fluid in a non-uniform microchannelen_US
dc.typeConference_Paperen_US
dc.identifier.emailNg, CO: cong@hku.hken_US
dc.identifier.authorityNg, CO=rp00224en_US
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros228314en_US
dc.identifier.spage35en_US
dc.identifier.epage35en_US
dc.publisher.placeHong Kong, China-

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