Steady secondary flows of Phan-Thien-Tanner fluids in pipes of complex shapes

Mario F. Letelier, Mauricio A. Olguín, Dennis A. Siginer

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Some kinematic and dynamic characteristics of secondary flows in straight tubes are explored for the case where the flow is laminar steady, the fluid is described by the modified Phan-Thien-Tanner model of viscoelastic fluids, and the tube cross-section shape varies through a wide range of configurations. This analysis is aimed at providing information about the transport capacity of secondary flows. Viscoelastic fluids have been observed to enhance heat transfer in pipe flow due to the transversal motion generated in non-circular pipes. In order to improve the design of heat exchangers it is necessary to understand how some basic variables, such as pipe geometry determine the structure of the corresponding secondary flows. In this paper it is investigated the kinematics and dynamic of some secondary flows for pipe shapes that generate different flows structures.

    Original languageEnglish
    Pages (from-to)65-78
    Number of pages14
    JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
    Volume255
    Publication statusPublished - 2000

    Fingerprint

    Secondary flow
    Pipe
    Fluids
    Kinematics
    Pipe flow
    Flow structure
    Laminar flow
    Heat exchangers
    Heat transfer
    Geometry

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

    Cite this

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    abstract = "Some kinematic and dynamic characteristics of secondary flows in straight tubes are explored for the case where the flow is laminar steady, the fluid is described by the modified Phan-Thien-Tanner model of viscoelastic fluids, and the tube cross-section shape varies through a wide range of configurations. This analysis is aimed at providing information about the transport capacity of secondary flows. Viscoelastic fluids have been observed to enhance heat transfer in pipe flow due to the transversal motion generated in non-circular pipes. In order to improve the design of heat exchangers it is necessary to understand how some basic variables, such as pipe geometry determine the structure of the corresponding secondary flows. In this paper it is investigated the kinematics and dynamic of some secondary flows for pipe shapes that generate different flows structures.",
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    Steady secondary flows of Phan-Thien-Tanner fluids in pipes of complex shapes. / Letelier, Mario F.; Olguín, Mauricio A.; Siginer, Dennis A.

    In: American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, Vol. 255, 2000, p. 65-78.

    Research output: Contribution to journalArticle

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