Resonance behavior of viscoelastic fluids in Poiseuille flow and application to flow enhancement

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Author list: Andrienko YA, Siginer DA, Yanovsky YG

Publisher: Elsevier

Place: OXFORD

Publication year: 2000

Journal: International Journal of Non-Linear Mechanics (0020-7462)

Journal acronym: INT J NONLINEAR MECH

Volume number: 35

Issue number: 1

Start page: 95

End page: 102

Number of pages: 8

ISSN: 0020-7462

Languages: English-Great Britain (EN-GB)

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Abstract

Resonance-like phenomena in axisymmetric Poiseuille flows of viscoelastic fluids are studied. It is shown that instantaneous flow velocities of the 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. Non-linear constitutive structures are also considered to show that the most effective mean flow rate enhancement for pulsating flows can be reached at the resonance frequencies. (C) 1999 Elsevier Science Ltd. All rights reserved.

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