Investigation on entrance length for electroosmotic flow in circular and noncircular cross section nanochannel

Tuan Norjihan Tuan Yaakub, Jumril Yunas, Burhanuddin Yeop Majlis

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

Abstract

Characteristics of bulk electroosmotic flow in nanochannel are different to microchannel because the electric double layer (EDL) becomes comparable to the channel height. This work presents a numerical investigation on the entrance length of pure electroosmotic flow inside 3D rectangular, cylinder and triangular nanochannel with same channel length. The electric field is fixed at 250 kV/cm for all models. A finite element analysis has been performed to solve the governing equation for laminar flow under the influenced of an electric field. The entry length estimation for fully developed electroosmotic laminar flow in a circular and noncircular cross sections are compared by evaluating the electroosmotic velocity magnitude and flow profiles at the centre line cut plane inside the nanochannel. The entrance length in nanochannel is found shorter in a smaller depth flow in rectangular, cylinder and triangular channels. While the triangular nanochannel has the shortest entry length for fully developed laminar flow compare to other cross section shape models. The effect of a step change in ζ-potential on the channel wall surface to the electroosmotic flow entrance length is also presented.

Original languageEnglish
Title of host publication4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN IV 2016
PublisherAmerican Institute of Physics Inc.
Volume1877
ISBN (Electronic)9780735415577
DOIs
Publication statusPublished - 11 Sep 2017
Event4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN 2016 - Langkawi, Malaysia
Duration: 9 Nov 201611 Nov 2016

Other

Other4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN 2016
CountryMalaysia
CityLangkawi
Period9/11/1611/11/16

Fingerprint

entrances
laminar flow
cross sections
entry
electric fields
microchannels
profiles

Keywords

  • Circular
  • Electroosmotic Flow
  • Noncircular Nanochannel

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Yaakub, T. N. T., Yunas, J., & Yeop Majlis, B. (2017). Investigation on entrance length for electroosmotic flow in circular and noncircular cross section nanochannel. In 4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN IV 2016 (Vol. 1877). [080002] American Institute of Physics Inc.. https://doi.org/10.1063/1.4999892

Investigation on entrance length for electroosmotic flow in circular and noncircular cross section nanochannel. / Yaakub, Tuan Norjihan Tuan; Yunas, Jumril; Yeop Majlis, Burhanuddin.

4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN IV 2016. Vol. 1877 American Institute of Physics Inc., 2017. 080002.

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

Yaakub, TNT, Yunas, J & Yeop Majlis, B 2017, Investigation on entrance length for electroosmotic flow in circular and noncircular cross section nanochannel. in 4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN IV 2016. vol. 1877, 080002, American Institute of Physics Inc., 4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN 2016, Langkawi, Malaysia, 9/11/16. https://doi.org/10.1063/1.4999892
Yaakub TNT, Yunas J, Yeop Majlis B. Investigation on entrance length for electroosmotic flow in circular and noncircular cross section nanochannel. In 4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN IV 2016. Vol. 1877. American Institute of Physics Inc. 2017. 080002 https://doi.org/10.1063/1.4999892
Yaakub, Tuan Norjihan Tuan ; Yunas, Jumril ; Yeop Majlis, Burhanuddin. / Investigation on entrance length for electroosmotic flow in circular and noncircular cross section nanochannel. 4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN IV 2016. Vol. 1877 American Institute of Physics Inc., 2017.
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