Experiments in Fluids

, 57:156 | Cite as

Reconstructing three-dimensional wake topology based on planar PIV measurements and pattern recognition analysis

Research Article

Abstract

The present study presents a new technique for reconstructing the salient aspects of three-dimensional wake topology based on time-resolved, planar, two-component particle image velocimetry data collected in multiple orthogonal planes. The technique produces conditionally averaged flow field reconstructions based on a pattern recognition analysis of velocity fields. It is validated on the wake of a low-aspect ratio dual step cylinder geometry, consisting of a large diameter cylinder (D) with small aspect ratio (L/D) attached to the mid-span of a small diameter cylinder (d). For a dual step cylinders with D/d = 2, and L/D = 1, numerical and experimental data are considered for ReD = 150 (laminar wake) and for ReD = 2100 (turbulent wake). The results show that the proposed technique successfully reconstructs the dominant periodic wake vortex interactions and can be extended to a wide range of turbulent flows.

Supplementary material

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Supplementary material 4 (MP4 4477 kb)

References

  1. Arroyo MP, Hinsch KD (2008) Recent developments of PIV towards 3D measurements. In: Particle image velocimetry. Springer, Berlin, pp 127–154Google Scholar
  2. Elsinga GE, Poelma C, Schroder A, Geisler R, Scarano F, Westerweel J (2012) Tracking of vortices in a turbulent boundary layer. J Fluid Mech 697:273–295CrossRefMATHGoogle Scholar
  3. Ferre JA, Giralt F (1989) Pattern-recognition analysis of the velocity field in plane turbulent wakes. J Fluid Mech 198:27–64MathSciNetCrossRefMATHGoogle Scholar
  4. Ghaemi S, Scarano F (2013) Turbulent structure of high amplitude pressure peaks within the turbulent boundary layer. J Fluid Mech 735:381–426CrossRefMATHGoogle Scholar
  5. Hangan H, Kopp GA, Vernet A, Martinuzzi R (2001) A wavelet pattern recognition technique for identifying flow structures in cylinder generated wakes. J Wind Eng Ind Aerodyn 89(11):1001–1015CrossRefGoogle Scholar
  6. Kopp GA, Ferre JA, Giralt F (1997) The use of pattern recognition and proper orthogonal decomposition in identifying the structure of fully-developed free turbulence. J Fluids Eng 119(2):289–296CrossRefGoogle Scholar
  7. Kourentis L, Konstantinidis E (2012) Uncovering large-scale coherent structures in natural and forced turbulent wakes by combining PIV, POD, and FTLE. Exp Fluids 52(3):749–763CrossRefGoogle Scholar
  8. Lewis C, Gharib M (1991) An exploration of the wake three dimensionalities caused by a local discontinuity in cylinder diameter. Phys Fluids A(4):104–117Google Scholar
  9. Ma X, Karamanos G-S, Karniadakis GE (2000) Dynamics and low-dimensionality of a turbulent near wake. J Fluid Mech 410:29–65MathSciNetCrossRefMATHGoogle Scholar
  10. McClure J, Morton C, Yarusevych S (2015) Flow development and structural loading on dual step cylinders in the laminar shedding regime. Phys Fluids 27(6):063602CrossRefGoogle Scholar
  11. Morton C, Yarusevych S (2014a) On vortex shedding from low aspect ratio dual step cylinders. J Fluids Struct 44:251–269CrossRefGoogle Scholar
  12. Morton C, Yarusevych S (2014b) Analyzing three-dimensional wake vortex dynamics using time-resolved planar PIV. In: 17th international symposium on applications of laser techniques to fluid mechanics, Lisbon, Portugal, 07–10 JulyGoogle Scholar
  13. Morton C, Yarusevych S (2015) Three dimensional flow and surface visualization with hydrogen bubble technique. J Vis 18(1):47–58Google Scholar
  14. Morton C, Yarusevych S, Scarano F (2016) A tomographic piv investigation of flow development over dual step cylinders. Phys Fluids 28:025104Google Scholar
  15. Rivero A, Ferre JA, Giralt F (2001) Organized motions in a jet in crossflow. J Fluid Mech 444:117–149CrossRefMATHGoogle Scholar
  16. Robinson O, Rockwell D (1993) Construction of three-dimensional images of flow structure via particle tracking techniques. Exp Fluids 14(4):257–270CrossRefGoogle Scholar
  17. Roshko A (1993) Perspectives on bluff body aerodynamics. J Wind Eng Ind Aerodyn 49(1):79–100CrossRefGoogle Scholar
  18. Scarano F (2013) Tomographic PIV: principles and practice. Meas Sci Technol 24(1):012001CrossRefGoogle Scholar
  19. Scarano F, Riethmuller ML (2000) Advances in iterative multigrid PIV image processing. Exp Fluids 29(1):S051–S060Google Scholar
  20. Scarano F, Benocci C, Riethmuller ML (1999) Pattern recognition analysis of the turbulent flow past a backward facing step. Phys Fluids (1994-present) 11(12):3808–3818CrossRefMATHGoogle Scholar
  21. Sirovich L (1987) Turbulence and the dynamics of coherent structures. Part i: coherent structures. Q Appl Math 45(3):561–571MathSciNetMATHGoogle Scholar
  22. Soria J, Atkinson C (2008) Towards 3C-3D digital holographic fluid velocity vector field measurement—tomographic digital holographic PIV (Tomo-HPIV). Meas Sci Technol 19(7):074002CrossRefGoogle Scholar
  23. Stansby PK (1974) The effects of end plates on the base pressure coefficient of a circular cylinder. Aeronaut J 78:36Google Scholar
  24. Tavoularis S (2005) Measurement in fluid mechanics. Cambridge University Press, CambridgeGoogle Scholar
  25. Tombazis N, Bearman PW (1997) A study of three-dimensional aspects of vortex shedding from a bluff body with a mild geometric disturbance. J Fluid Mech 330:85–112CrossRefGoogle Scholar
  26. Van Oudheusden BW, Scarano F, Van Hinsberg NP, Watt DW (2005) Phase-resolved characterization of vortex shedding in the near wake of a square-section cylinder at incidence. Exp Fluids 39(1):86–98CrossRefGoogle Scholar
  27. Vernet A, Kopp GA, Ferré JA, Giralt F (1999) Three-dimensional structure and momentum transfer in a turbulent cylinder wake. J Fluid Mech 394:303–337CrossRefMATHGoogle Scholar
  28. von Timme A (1957) Ueber die geschwindigkeitsverteilung in wirbeln. Ingenieur-Archiv 25(3):205–225CrossRefMATHGoogle Scholar
  29. Westerweel J, Scarano F (2005) Universal outlier detection for PIV data. Exp Fluids 39(6):1096–1100CrossRefGoogle Scholar
  30. Wieneke B (2015) PIV uncertainty quantification from correlation statistics. Meas Sci Technol 26:074002CrossRefGoogle Scholar
  31. Williamson CHK (1996) Vortex dynamics in the cylinder wake. Annu Rev Fluid Mech 28(1):477–539MathSciNetCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Department of Mechanical and Manufacturing EngineeringUniversity of CalgaryCalgaryCanada
  2. 2.Department of Mechanical and Mechatronics EngineeringUniversity of WaterlooWaterlooCanada

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