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Study of the Flow Around a Heated Cylinder in Mixed Convection Regime

  • S. RolfoEmail author
  • K. Kopsidas
  • S. A. Rahman
  • C. Moulinec
  • D. R. Emerson
Conference paper
Part of the ERCOFTAC Series book series (ERCO, volume 25)

Abstract

Overhead Lines (OHL) are a key component to transmit and distribute electrical energy. The aero-thermal design of OHL is generally carried out considering the cable as a perfect heated cylinder immersed in a uniform cross flow (IEEE standard for calculating the current-temperature relationship of bare overhead conductors, 2013, [1]). Moreover, The design also assumes that only two regimes can occur, depending on the Reynolds number (based on the line diameter and the incoming velocity): (a) natural convection for low velocities, e.g. below a wind speed of 0.6 m/s which roughly corresponds to a Reynolds number of 850; (b) forced convection at higher Reynolds numbers. In both of these cases analytical correlations exist to compute the Nusselt number.

Notes

Acknowledgements

The authors are grateful for financial support by the Hartree Centre and the UK Engineering and Physical Sciences Research Council (EPSRC) under grants EP/L000261/1, EP/N016602/1 and EP/K038427/1.

References

  1. 1.
    IEEE Standard for Calculating the Current-Temperature Relationship of Bare Overhead Conductors. In: IEEE Std 738-2012 (Revision of IEEE Std 738-2006 - Incorporates IEEE Std 738-2012 Cor 1-2013), pp. 1–72 (2013)Google Scholar
  2. 2.
    Zdravkovich, M.M.: Flow Around Circular Cylinders Volume 1: Fundamentals. Oxford University Press, Oxford (1997)Google Scholar
  3. 3.
    Churchill, S.W., Bernstein, M.: A correlating equation for forced convection from gases and liquids to a circular cylinder in crossflow. J. Heat Transf. 99, 300–306 (1977)CrossRefGoogle Scholar
  4. 4.
    Archambeau, F., Mechitoua, N., Sakiz, M.: Code_Saturne: a finite volume code for the computation of turbulent incompressible flows - industrial applications. Int. J. Finite 1 (2004)Google Scholar
  5. 5.
    Fournier, Y., Bonelle, J., Moulinec, C., Shang, Z., Sunderland, A., Uribe, J.: Optimizing Code_Saturne computations on petascale systems. Comput. Fluids 45, 103–108 (2011)CrossRefGoogle Scholar
  6. 6.
    van Steenhoven, A.A., Rindt, C.C.M.: Flow transition behind a heated cylinder. Int. J. Heat Fluid Flow 24, 322–333 (2003)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • S. Rolfo
    • 1
    Email author
  • K. Kopsidas
    • 2
  • S. A. Rahman
    • 2
  • C. Moulinec
    • 1
  • D. R. Emerson
    • 1
  1. 1.Scientific Computing DepartmentSTFC Daresbury LaboratoryWarringtonUK
  2. 2.School of Electrical and Electronic EngineeringThe University of ManchesterManchesterUK

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