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Interaction of circular cylinder wake with a short asymmetrically located downstream plate

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Abstract

This study reveals the interaction patterns of separated shear layers from a circular cylinder with a short downstream plate and their reflection on the frequency and the formation length of the vortices from the cylinder as a function of plate location relative to the cylinder. The effect of horizontal (G/D) and vertical (Z/D) distances between the cylinder and the plate on the near wake is studied via Digital Particle Image Velocimetry (DPIV) in a water channel for Reynolds numbers of 200, 400 and 750, based on the cylinder diameter D. It is shown that the interaction of wake with the plate of length D can be categorized depending on the horizontal and the vertical distances between the cylinder and the plate. For the vertical distance range of Z/D ≤ 0.7, there is a critical horizontal spacing before which the shear layers from the cylinder are inhibited to form vortices in front of the plate. Resulting elongated recirculation region between the plate and the cylinder suggests modification of the absolutely unstable near wake of free circular cylinder in favor of convective instability. Z/D = 0.9 provides a passage from Z/D ≤ 0.7 to ≥1.1 and is associated with a dominant effect on the near-wake characteristics of interaction of shear layers from the cylinder with those from the downstream plate. For Z/D ≥ 1.1, there is again, yet a smaller critical horizontal spacing after which vortices interact with decreased downstream plate interference. In this vertical separation distance range, a gap flow between the plate and the cylinder plays a determining role on the formation length and St number of vortices for small horizontal spacing values.

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References

  • Anderson EA, Szewczyk AA (1997) Effects of a splitter plate on the near wake of a circular cylinder in 2- and 3-dimensional configurations. Exp Fluids 23:161–174

    Article  Google Scholar 

  • Apelt CJ, West GS, Szewczyk A (1973) The effects of wake splitter plates on the flow past a circular cylinder in the range 104 < Re < 5.104 part 1. J Fluid Mech 61:187–198

    Article  Google Scholar 

  • Baek H, Karniadakis GE (2009) Suppressing vortex-induced vibrations via passive means. J Fluids Struct 25:848–866

    Article  Google Scholar 

  • Bearman PW (1965) Investigation of the flow behind a two dimensional model with a blunt trailing edge and fitted with splitter plates. J Fluid Mech 21:241–255

    Article  MATH  Google Scholar 

  • Bechert DW (1985) Excitation of instability waves. Z Flufwiss Weltraumforsch 9(6):356–361

    Google Scholar 

  • Boisaubert N, Texier A (1998) Effect of a splitter plate on the near-wake development of a semicircular cylinder. Exp Therm Fluid Sci 16:100–111

    Article  Google Scholar 

  • Choi H, Jeon WP, Kim J (2008) Control of flow over a bluff body. Annu Rev Fluid Mech 40:113–139

    Article  MathSciNet  Google Scholar 

  • Chomaz JM, Huerre P, Redekopp LG (1988) Bifurcation of local and global modes in spatially developing flows. Phys Rev Lett 60:25–28

    Article  Google Scholar 

  • Cruz AS, David L, Pecheux J, Texier A (2005) Characterization by proper-orthogonal-decomposition of the passive controlled wake flow downstream of a half cylinder. Exp Fluids 39:730–742

    Article  Google Scholar 

  • Gerrard JH (1966) The mechanics of the formation region of vortices behind bluff bodies. J Fluid Mech 25:401–413

    Article  Google Scholar 

  • Gerrard JH (1978) The wakes of cylindrical bluff bodies at low Reynolds number. Phil Trans Roy Soc (Lond) Ser A 288(1354):351–382

    Article  Google Scholar 

  • Griffin OM, Hall MS (1991) Vortex shedding lock-on and flow control in bluff body wakes—Review. J Fluids Eng 113:526–537

    Article  Google Scholar 

  • Huerre P, Monkewitz PA (1985) Absolute and convective instabilities in free shear layers. J Fluid Mech 159:151–168

    Article  MATH  MathSciNet  Google Scholar 

  • Hwang J-Y, Yang K-S, Sun S-H (2003) Reduction of flow-induced forces on a circular cylinder using a detached splitter plate. Phys Fluids 15(8):2433–2436

    Article  Google Scholar 

  • Khor M, Sheridan J, Thompson MC, Hourigan K (2008) Global frequency selection in the observed time-mean wakes of circular cylinders. J Fluid Mech 601:425–441

    Article  MATH  Google Scholar 

  • Koch W (1985) Local instability characteristics and frequency determination of self-excited wake flows. J Sound Vib 99:53–83

    Article  Google Scholar 

  • Kwon K, Choi H (1996) Control of laminar vortex shedding behind a circular cylinder using splitter plates. Phys Fluids 8(2):479–486

    Article  MATH  Google Scholar 

  • Leu T-S, Ho C-M (2000) Control of global instability in a non-parallel near wake. J Fluid Mech 404:345–378

    Article  MATH  Google Scholar 

  • Maekawa H, Mansour NN, Buell JC (1992) Instability mode interactions in a spatially developing plane wake. J Fluid Mech 235:223–254

    Article  MATH  Google Scholar 

  • Misirlioglu A, Unal MF, Bearman PW (1992) Passive control of wake from a circular cylinder with a splitter plate. IUTAM Symposium of Bluff Body Wakes, Dynamics and Instabilities, Göttingen, pp 77–80

  • Mittal S (2003) Effect of a ‘‘slip’’ splitter plate on vortex shedding from a cylinder. Phys Fluids 15(3):817–820

    Article  Google Scholar 

  • Nakamura Y (1996) Vortex shedding from bluff bodies with splitter plates. J Fluids Struct 10:147–158

    Article  Google Scholar 

  • Nakayama A, Noda H (2000) LES simulation of flow around a bluff body fitted with a splitter plate. J Wind Eng Ind Aero 85:85–96

    Article  Google Scholar 

  • Norberg C (1987) Effects of Reynolds number and a low-intensity freestream turbulence on the flow around a circular cylinder. Pub. 87/2, Dept. Applied Thermo. Fluid Mech. Chalmers University of Tech, Goteburg

    Google Scholar 

  • Oertel H Jr (1990) Wakes behind blunt bodies. Annu Rev Fluid Mech 22:539–564

    Article  MathSciNet  Google Scholar 

  • Ozono S (1999) Flow control of vortex shedding by a short splitter plate asymmetrically arranged downstream of a circular cylinder. Phys Fluids 11(10):2928–2934

    Article  MATH  Google Scholar 

  • Ozono S (2003) Vortex suppression of cylinders by wake deflectors. J Wind Eng Ind Aero 91:91–99

    Article  Google Scholar 

  • Roshko A (1954) On the drag and shedding frequency of two dimensional bluff bodies. NACA TN 3169:1–29

    Google Scholar 

  • Strykowski PJ, Sreenivasan KR (1990) On the formation and suppression of vortex ‘shedding’ at low Reynolds numbers. J Fluid Mech 218:71–107

    Article  Google Scholar 

  • Unal MF, Rockwell D (1988a) On vortex formation from a cylinder Part 1: The initial instability. J Fluid Mech 190:491–512

    Article  Google Scholar 

  • Unal MF, Rockwell D (1988b) On vortex formation from a cylinder Part 2: Control by splitter plate interference. J Fluid Mech 190:513–529

    Article  Google Scholar 

  • Yucel SB (2008) Experimental investigation of bluff body wake modification by splitter plate. MSc thesis, Institute of Science and Technology, Istanbul Technical University, Istanbul

  • Zdravkovich MM (1981) Review and classification of various aerodynamic and hydrodynamic means for suppressing vortex shedding. J Wind Eng Ind Aero. 7(2):145–189

    Article  Google Scholar 

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Authors and Affiliations

  1. Department of Aeronautical Engineering, Istanbul Technical University, 34469, Istanbul, Turkey

    S. B. Yucel, O. Cetiner & M. F. Unal

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  1. S. B. Yucel
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  2. O. Cetiner
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  3. M. F. Unal
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Correspondence to M. F. Unal.

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Yucel, S.B., Cetiner, O. & Unal, M.F. Interaction of circular cylinder wake with a short asymmetrically located downstream plate. Exp Fluids 49, 241–255 (2010). https://doi.org/10.1007/s00348-010-0852-x

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  • DOI: https://doi.org/10.1007/s00348-010-0852-x

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