### 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 language | English |
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Pages (from-to) | 65-78 |

Number of pages | 14 |

Journal | American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED |

Volume | 255 |

Publication status | Published - 2000 |

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### All Science Journal Classification (ASJC) codes

- Engineering(all)

### Cite this

*American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED*,

*255*, 65-78.

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*American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED*, vol. 255, pp. 65-78.

**Steady secondary flows of Phan-Thien-Tanner fluids in pipes of complex shapes.** / Letelier, Mario F.; Olguín, Mauricio A.; Siginer, Dennis A.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Steady secondary flows of Phan-Thien-Tanner fluids in pipes of complex shapes

AU - Letelier, Mario F.

AU - Olguín, Mauricio A.

AU - Siginer, Dennis A.

PY - 2000

Y1 - 2000

N2 - 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.

AB - 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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UR - http://www.scopus.com/inward/citedby.url?scp=0346056107&partnerID=8YFLogxK

M3 - Article

VL - 255

SP - 65

EP - 78

JO - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

JF - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

SN - 0888-8116

ER -