The effect of asymmetric zeta potentials on the electro-osmotic flow of a generalized Phan-Thien-Tanner fluid

• Tipo: Artigo em Revista Científica Internacional
• Data: 2024

Autores

Ribau, AM (Autor) FEUP; Ferrás, LL (Autor) Outra; Morgado, ML (Autor) Outra; Rebelo, M (Autor) Outra; F. T. Pinho (Autor) FEUP; Afonso, AM (Autor) FEUP

Revista

Título: Journal of Engineering Mathematics

Vol. 148

ISSN: 0022-0833

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-016-VM6

DOI: 10.1007/s10665-024-10387-7

Abstract (EN): Electrokinetic flows driven by electro-osmotic forces are especially relevant in micro and nano-devices, presenting specific applications in medicine, biochemistry, and miniaturized industrial processes. In this work, we integrate analytical solutions with numerical methodologies to explore the fluid dynamics of viscoelastic electro-osmotic/pressure-driven fluid flows (described by the generalized Phan-Thien-Tanner (gPTT) constitutive equation) in a microchannel under asymmetric zeta potential conditions. The constitutive equation incorporates the Mittag-Leffler function with two parameters (alpha\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\alpha $$\end{document} and beta\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\beta $$\end{document}), which regulate the rate of destruction of junctions in a network model. We analyze the impact of the various model parameters on the velocity profile and observe that our newly proposed model provides a more comprehensive depiction of flow behavior compared to traditional models, rendering it suitable for modeling complex viscoelastic flows.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 18