Analytical and numerical study of the electro-osmotic annular flow of viscoelastic fluids

• Type: Article in International Scientific Journal
• Date: 2014

Authors

L. L. Ferrás (Author) Other; A. M. Afonso (Author) FEUP; M. A. Alves (Author) FEUP; J. M. Nóbrega (Author) Other; F. T. Pinho (Author) FEUP

Journal

Title: Journal of Colloid and Interface Science

Vol. 420

Pages: 152-157

ISSN: 0021-9797

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 22 Citations

ISI Web of Science

Scopus - 32 Citations

Scientific classification

FOS: Engineering and technology

Other information

Authenticus ID: P-009-4A4

DOI: 10.1016/j.jcis.2013.12.043

Abstract (EN): In this work we present semi-analytical solutions for the electro-osmotic annular flow of viscoelastic fluids modeled by the Linear and Exponential 1'11 models. The viscoelastic fluid flows in the axial direction between two concentric cylinders under the combined influences of electrokinetic and pressure forcings. The analysis invokes the Debye-Hiickel approximation and includes the limit case of pure electro-osmotic flow. The solution is valid for both no slip and slip velocity at the walls and the chosen slip boundary condition is the linear Navier slip velocity model. The combined effects of fluid rheology, electro-osmotic and pressure gradient forcings on the fluid velocity distribution are also discussed.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6