In the present work, passive control of vortex shedding behind a circular cylinder by splitter plates of various lengths attached on the cylinder base is experimentally investigated in shallow water flow. Detailed measurements of instantaneous and time-averaged flow data of wake flow region at a Reynolds number of were obtained by particle image velocimetry technique. The length of the splitter plate was varied from to in order to see the effect of the splitter plate length on the flow characteristics. Instantaneous and time-averaged flow data clearly indicate that the length of the splitter plate has a substantial effect on the flow characteristics. The flow characteristics in the wake region of the circular cylinder sharply change up to the splitter plate length of . Above this plate length, small changes occur in the flow characteristics.
Issue Section:
Techniques and Procedures
Keywords:
confined flow,
plates (structures),
vortices,
wakes,
flow control,
splitter plate,
shallow flow,
formation region,
PIV
1.
Williamson
, C. H. K.
, 1996, “Vortex Dynamics in the Cylinder Wake
,” Annu. Rev. Fluid Mech.
0066-4189, 28
, pp. 477
–526
.2.
Sarpkaya
, T.
, 2004, “A Critical Review of the Intrinsic Nature of Vortex-Induced Vibrations
,” J. Fluids Struct.
0889-9746, 19
(4
), pp. 389
–447
.3.
Lee
, S. J.
, Lee
, S. I.
, and Park
, C. W.
, 2004, “Reducing the Drag on a Circular Cylinder by Upstream Installation of a Small Control Rod
,” Fluid Dyn. Res.
0169-5983, 34
, pp. 233
–250
.4.
Delaunay
, Y.
, and Kaiktsis
, L.
, 1999, “Active Control of Cylinder Wakes: Use of Base Suction and Blowing
,” ESAIM, Third International Workshop on Vortex Flows and Related Numerical Methods, Proceedings
, Vol. 7
, pp. 104
–119
.5.
Hangan
, H.
, and Kim
, J.
, 2003, “Aerodynamic Slot-Control for 2D Square Prisms
,” J. Wind. Eng. Ind. Aerodyn.
0167-6105, 91
, pp. 1847
–1857
.6.
Koutmos
, P.
, Papailiou
, D.
, and Bakrozis
, A.
, 2004, “Experimental and Computational Study of Square Cylinder Wakes With Two-Dimensional Injection Into the Base Flow Region
,” Eur. J. Mech. B/Fluids
0997-7546, 23
, pp. 353
–365
.7.
Kwon
, S. H.
, Cho
, J. W.
, Park
, J. S.
, and Choi
, H. S.
, 2002, “The Effects of Drag Reduction by Ribbons Attached to Cylindrical Pipes
,” Ocean Eng.
0029-8018, 29
(15
), pp. 1945
–1958
.8.
Igarashi
, T.
, 1997, “Drag Reduction of a Square Prism by Flow Control Using a Small Rod
,” J. Fluids Struct.
0889-9746, 69
, pp. 141
–153
.9.
Fujisawa
, N.
, and Takeda
, G.
, 2003, “Flow Control Around a Circular Cylinder by Internal Acoustic Excitation
,” J. Fluids Struct.
0889-9746, 17
, pp. 903
–913
.10.
Akilli
, H.
, Sahin
, B.
, and Tumen
, N. F.
, 2005, “Suppression of Vortex Shedding of Circular Cylinder in Shallow Water by a Splitter Plate
,” Flow Meas. Instrum.
0955-5986, 16
, pp. 211
–219
.11.
Gerrard
, H.
, 1966, “The Mechanics of the Formation Region of Vortices Behind Bluff Bodies
,” J. Fluid Mech.
0022-1120, 25
, pp. 401
–413
.12.
Apelt
, J.
, West
, G. S.
, and Szewczyk
, A. A.
, 1973, “The Effects of Wake Splitter Plates on the Flow Past a Circular Cylinder in the Range 104<R<5×104
,” J. Fluid Mech.
0022-1120, 61
, pp. 187
–198
.13.
Anderson
, A.
, and Szewczyk
, A. A.
, 1997, “Effects of a Splitter Plate on the Near Wake of a Circular Cylinder in 2 and 3-Dimensional Flow Configurations
,” Exp. Fluids
0723-4864, 23
, pp. 161
–174
.14.
Kwon
, K.
, and Choi
, H.
, 1996, “Control of Laminar Vortex Shedding Behind a Circular Cylinder Using Splitter Plates
,” Phys. Fluids
1070-6631, 8
(2
), pp. 479
–486
.15.
Prasad
, A.
, and Williamson
, C. H. K.
, 1997, “The Instability of the Shear Layer Separating From a Bluff Body
,” J. Fluid Mech.
0022-1120, 333
, pp. 375
–402
.16.
Hwang
, J. Y.
, Yang
, K. S.
, and Sun
, S. H.
, 2003, “Reduction of Flow-Induced Forces on Circular Cylinder Using a Detached Splitter Plate
,” Phys. Fluids
1070-6631, 15
(8
), pp. 2433
–2436
.17.
Tiwari
, S.
, Chakraborty
, D.
, Biswas
, G.
, and Panigrahi
, P. K.
, 2005, “Numerical Prediction of Flow and Heat Transfer in a Channel in the Presence of a Built-In Circular Tube With and Without an Integral Wake Splitter
,” Int. J. Heat Mass Transfer
0017-9310, 48
, pp. 439
–453
.18.
Akilli
, H.
, Akar
, A.
, and Karakus
, C.
, 2004, “Flow Characteristics of Circular Cylinders Arranged Side-By-Side in Shallow Water
,” Flow Meas. Instrum.
0955-5986, 15
, pp. 187
–197
.19.
Akilli
, H.
, and Rockwell
, D.
, 2002, “Vortex Formation From a Cylinder in Shallow Water
,” Phys. Fluids
1070-6631, 14
, pp. 2957
–2967
.20.
Ingram
, R. G.
, and Chu
, V. H.
, 1987, “Flow Around Island in Rupert Bay: An Investigation of the Bottom Friction Effect
,” J. Geophys. Res.
0148-0227, 92
, pp. 14521
–14533
.21.
Chen
, D.
, and Jirka
, H.
, 1995, “Experimental Study of Plane Turbulent Wakes in a Shallow Water Layer
,” Fluid Dyn. Res.
0169-5983, 16
, pp. 11
–41
.22.
Lloyd
, P. M.
, Stansby
, P. K.
, and Chen
, D.
, 2001, “Wake Formation Around Islands in Oscillatory Laminar Shallow-Water Flows. Part 1. Experimental Investigation
,” J. Fluid Mech.
0022-1120, 429
, pp. 217
–238
.23.
Kahraman
, A.
, Sahin
, B.
, and Rockwell
, D.
, 2002, “Control of Vortex Formation From a Vertical Cylinder in Shallow Water: Effect of Localized Rough-ness Elements
,” Exp. Fluids
0723-4864, 33
, pp. 54
–65
.24.
Fu
, H.
, and Rockwell
, D.
, 2005, “Shallow Flow Past a Cylinder: Transition Phenomena at Low Reynolds Number
,” J. Fluid Mech.
0022-1120, 540
, pp. 75
–97
.25.
Fu
, H.
, and Rockwell
, D.
, 2005, “Shallow Flow Past a Cylinder: Control of the Near Wake
,” J. Fluid Mech.
0022-1120, 539
, pp. 1
–24
.26.
Dong
, S.
, Karniadakis
, G. E.
, Ekmekci
, A.
, and Rockwell
, D.
, 2006, “A Combined Direct Numerical Simulation-Particle Image Velocimetry Study of the Turbulent Near Wake
,” J. Fluid Mech.
0022-1120, 569
, pp. 185
–207
.27.
Lin
, J. C.
, Yang
, Y.
, and Rockwell
, D.
, 2002, “Flow Past Two Cylinders in Tandem: Instantaneous and Averaged Flow Structure
,” J. Fluids Struct.
0889-9746, 16
, pp. 1059
–1071
.28.
Mittal
, R.
, and Balachandar
, S.
, 1995, “Effect of Three-Dimensionality on the Lift and Drag of the Nominally Two-Dimensional Cylinders
,” Phys. Fluids
1070-6631, 7
, pp. 1841
–1865
.29.
Kim
, W.
, Yoo
, J. Y.
, and Sung
, J.
, 2006, “Dynamics of Vortex Lock-On in a Perturbed Cylinder Wake
,” Phys. Fluids
1070-6631, 18
, 074103
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