Resonance-like behavior of viscoelastic fluids in periodically driven tube flows

Journal article

Authors / Editors

Siginer, Dennis

Research Areas

ENGINEERING AND TECHNOLOGY (Frascati classification)

Publication Details

Subtitle: Resonance-like behavior of viscoelastic fluids in periodically driven tube flows

Publisher: Elsevier

Publication year: 1995

Journal: Journal of Fluids and Structures (0889-9746)

Volume number: 231

Issue number: 7

ISSN: 0889-9746

URL: https://biust.pure.elsevier.com

Languages: English-United States (EN-US)

Abstract

Resonance-like phenomena in axisymmetric Poiseuille flows of viscoelastic fluids are theoretically studied. It is shown that instantaneous flow velocities of an upper convected Maxwell fluid with a spectrum of relaxation times drastically increase at certain frequencies of the oscillating pressure gradient. This effect becomes more pronounced as the tube radius gets smaller. Nonlinear liquids are also considered to show that the most effective mean flow rate enhancement for pulsating flows can be reached at the resonance frequencies.

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