Unsteady flow of a non-linear viscoelastic fluid in pipes

Mario F. Letelier, Nicolás Madariaga, Dennis A. Siginer

    Research output: Contribution to journalArticle

    Abstract

    Flow of a viscoelastic fluid in round pipes is analyzed for the case where the pressure gradient is oscillatory with varying amplitude. The fluid is modelled according to Phan-Thien-Tanner's constitutive equation. The analysis is carried out by using the perturbation method in which a material parameter is considered small. Velocity field and other kinematic and dynamic variables are evaluated for a range of relevant parameters. The results are compared with the base Newtonian and linear Maxwell flows. The effect of the PTT model in these type of flows is highlighted.

    Original languageEnglish
    Article numberIMECE2004-59693
    Pages (from-to)829-833
    Number of pages5
    JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
    Volume260
    DOIs
    Publication statusPublished - 2004

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    Unsteady flow
    Pipe
    Fluids
    Constitutive equations
    Pressure gradient
    Kinematics

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

    Cite this

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    Unsteady flow of a non-linear viscoelastic fluid in pipes. / Letelier, Mario F.; Madariaga, Nicolás; Siginer, Dennis A.

    In: American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, Vol. 260, IMECE2004-59693, 2004, p. 829-833.

    Research output: Contribution to journalArticle

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