Advertisement

Wavenumber Dependence of Very Large-Scale Motions in CICLoPE at \(4800 \le \mathrm{Re}_{\tau } \le 37{,}000\)

  • Emir ÖngünerEmail author
  • El-Sayed Zanoun
  • Tommaso Fiorini
  • Gabriele Bellani
  • Amir Shahirpour
  • Christoph Egbers
  • Alessandro Talamelli
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 196)

Abstract

The present work aims at investigating the very large-scale structures of turbulent pipe flow in CICLoPE at high Reynolds numbers. According to recent studies, some open questions remain to be answered to identify accurate sizes of these turbulent structures in pipe flow. The CICLoPE facility has been therefore utilized, providing an opportunity to approach high Reynolds number flows with high enough resolution in terms of the viscous length scale, allowing us to investigate the behavior of such turbulent structures. Meandering structures, usually referred as VLSM (very large-scale motions), have been identified with claimed extension up to 20R, where R is the pipe radius.

Notes

Acknowledgements

This work was supported under EuHIT (European High-Performance Infrastructures in Turbulence) grant with the title “Spectral scaling of turbulence in CICLoPE at high Reynolds numbers”. The authors at Brandenburg University of Technology are supported by the DFG-German Research Foundation as a part of the FOR1182 and SPP1881 (grant nr.: EG100/24-1) project.

References

  1. 1.
    S.C.C. Bailey, M. Hultmark, A.J. Smits, M.P. Schultz, Azimuthal structure of turbulence in high Reynolds number pipe flow. J. Fluid Mech. 615, 121–138 (2008)CrossRefzbMATHGoogle Scholar
  2. 2.
    B.J. Rosenberg, M. Hultmark, M. Vallikivi, S.C.C. Bailey, A.J. Smits, Turbulence spectra in smooth- and rough-wall pipe flow at extreme Reynolds numbers. J. Fluid Mech. 731, 46–63 (2013)CrossRefzbMATHGoogle Scholar
  3. 3.
    M. Guala, S.E. Hommena, R.J. Adrian, Large-scale and very-large-scale motions in turbulent pipe flow. J. Fluid Mech. 554, 521–542 (2006)CrossRefzbMATHGoogle Scholar
  4. 4.
    M. Vallikivi, B. Ganapathisubramani, A.J. Smits, Spectral scaling in boundary layers and pipes at very high Reynolds numbers. J. Fluid Mech. 771, 303–326 (2015)CrossRefGoogle Scholar
  5. 5.
    F. König, E.-S. Zanoun, E. Öngüner, C. Egbers, The CoLaPipe—the new Cottbus large pipe test facility at Brandenburg University of Technology Cottbus-Senftenberg. Rev. Sci. Instrum. 85, 075115 (2014)CrossRefGoogle Scholar
  6. 6.
    E.-S. Zanoun, E. Öngüner, C. Egbers, Conventional measuring probes in the wall layer of turbulent subsonic ducted flows. Thermophys. Aeromech. 23(3), 329–342 (2016)CrossRefGoogle Scholar
  7. 7.
    X. Wu, J.R. Baltzer, R.J. Adrian, Direct numerical simulation of a 30R long turbulent pipe flow at \(Re_{\tau }=685\): large- and very large-scale motions. J. Fluid Mech. 698, 235–281 (2012)MathSciNetCrossRefzbMATHGoogle Scholar
  8. 8.
    K.C. Kim, R.J. Adrian, Very large-scale motion in the outer layer. Phys. Fluids 11, 417–422 (1999)MathSciNetCrossRefzbMATHGoogle Scholar
  9. 9.
    A. Talamelli, F. Persiani, J.H.M. Fransson, A. Johansson, H.M. Nagib, J.D. Redi, K.R. Sreenivasan, P.A. Monkewitz, CICLoPE—a response to the need for high Reynolds number experiments. Fluid Dyn. Res. 41(2), 021407 (2009)CrossRefzbMATHGoogle Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Emir Öngüner
    • 1
    Email author
  • El-Sayed Zanoun
    • 1
    • 3
  • Tommaso Fiorini
    • 2
  • Gabriele Bellani
    • 2
  • Amir Shahirpour
    • 1
  • Christoph Egbers
    • 1
  • Alessandro Talamelli
    • 2
  1. 1.Department of Aerodynamics and Fluid MechanicsBrandenburg University of TechnologyCottbusGermany
  2. 2.Department of Industrial EngineeringUniversità di BolognaForliItaly
  3. 3.Faculty of EngineeringBenha UniversityBenhaEgypt

Personalised recommendations