Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorZhao, Cunluen
dc.contributor.authorYang, Chunen
dc.contributor.authorWang, Qiuwangen
dc.contributor.authorZeng, Minen
dc.identifier.citationZhao, C., Yang, C., Wang, Q., & Zeng, Min. (2018). Transient characteristics of electric double layer charging and the associated induced-charge electrokinetic flow. Physics of Fluids, 30(12), 122005-. doi:10.1063/1.5055866en
dc.description.abstractThis paper presents a detailed numerical analysis of the transient characteristics of electric double layer (EDL) charging and the associated induced-charge electrokinetic (ICEK) flow around an ideally polarizable cylinder. To this end, we solved numerically the coupled Poisson-Nernst-Planck and Navier-Stokes equations with the finite element method. The numerical simulation provides an unprecedented full-field (including the EDL region) characterization of the transient evolutions of ion transport, electric potential, and fluid flow during the EDL charging. The simulation results show that the EDL charging is driven by the electric current normal to the cylinder surface. With EDL being charged, the charge density in the EDL counteracts the local external electric field on the cylinder surface to reduce the electric current, which then leads to the slowing down of the EDL charging. At the steady state, the EDL becomes fully charged and the charge density in EDL exactly counteracts the external electric field, and then the EDL charging stops. During the EDL charging, the interaction of the external electric field with the charge density in the EDL drives the liquid in the EDL to move first, and then as time evolves, the liquid in the bulk electrolyte sets in motion because of the momentum transfer between the EDL and the bulk. These findings are conducive to the understanding of the transient dynamics of ICEK phenomena around polarizable objects.en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.format.extent11 p.en
dc.relation.ispartofseriesPhysics of Fluidsen
dc.rights© 2018 Authors. All rights reserved. This paper was published by AIP Publishing in Physics of Fluids and is made available with permission of Authors.en
dc.subjectDRNTU::Engineering::Mechanical engineeringen
dc.subjectElectrokinetic Phenomenaen
dc.titleTransient characteristics of electric double layer charging and the associated induced-charge electrokinetic flowen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen
dc.description.versionPublished versionen
item.fulltextWith Fulltext-
Appears in Collections:MAE Journal Articles

Citations 20

Updated on Mar 4, 2021

Citations 20

Updated on Mar 9, 2021

Page view(s)

Updated on May 26, 2022

Download(s) 50

Updated on May 26, 2022

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.