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Efficient Computation of Three-Dimensional Flow in Helically Corrugated Hoses Including Swirl

[+] Author Affiliations
Bas J. van der Linden, Arris S. Tijsseling, Maxim Pisarenco

Eindhoven University of Technology, Eindhoven, The Netherlands

Emmanuel Ory

Single Buoy Mooring Offshore, Monaco, Monaco

Jacques Dam

Stork Inoteq, Amsterdam, The Netherlands

Paper No. PVP2009-77997, pp. 655-664; 10 pages
doi:10.1115/PVP2009-77997
From:
  • ASME 2009 Pressure Vessels and Piping Conference
  • Volume 4: Fluid-Structure Interaction
  • Prague, Czech Republic, July 26–30, 2009
  • Conference Sponsors: Pressure Vessels and Piping
  • ISBN: 978-0-7918-4367-3 | eISBN: 978-0-7918-3854-9
  • Copyright © 2009 by ASME

abstract

In this article we propose an efficient method to compute the friction factor of helically corrugated hoses carrying flow at high Reynolds numbers. A comparison between computations of several turbulence models is made with experimental results for corrugation sizes that fall outside the range of validity of the Moody diagram. To do this efficiently we implement quasi-periodicity. Using the appropriate boundary conditions and matching body force, we only need to simulate a single period of the corrugation to find the friction factor for fully developed flow. A second technique is introduced by the construction of an appropriately twisted wedge, which allows us to furthermore reduce the problem by a further dimension while accounting for the Beltrami symmetry that is present in the full three-dimensional problem. We make a detailed analysis of the accuracy and time-saving that this novelty introduces. We show that the swirl inside the flow, which is introduced by the helical boundary, has a positive effect on the friction factor. Furthermore, we give a prediction for which corrugation angles the assumption of axisymmetry is no longer valid. It then has to make place for Beltrami-symmetry if accurate results are required.

Copyright © 2009 by ASME

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