0
Research Papers: Fundamental Issues and Canonical Flows

Drag Reduction of a Bluff Body by Grooves Laid Out by Design of Experiment

[+] Author and Article Information
Seong-Ho Seo

Division of Information Analysis,
Korea Institute of Science and Technology Information,
76-2 Geoje-dong,
Yeonje-gu, Busan 611-702, South Korea

Chung-Do Nam

Division of Marine Engineering,
Korea Maritime University,
727 Taejong-ro,
Yeongdo-gu, Busan 606-791, South Korea

Cheol-Hyun Hong

e-mail: chhong@pusan.ac.kr
Pusan Educational Center for Computer
Aided Machine Design,
Pusan National University,
San 30, Jangjeon-dong,
Geumjeong-gu, Busan 609-735, South Korea

1Corresponding author.

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received September 29, 2012; final manuscript received June 27, 2013; published online August 19, 2013. Assoc. Editor: Zhongquan Charlie Zheng.

J. Fluids Eng 135(11), 111202 (Aug 19, 2013) (10 pages) Paper No: FE-12-1483; doi: 10.1115/1.4024934 History: Received September 29, 2012; Revised June 27, 2013

In this study, we used the Taguchi method to derive the optimal design parameters for the grooves formed on the upper surface of a circular cylinder. Using the derived values of the optimal design parameters, we created grooves on diphycercal the surfaces of a circular cylinder and analyzed the wake flow and the boundary-layer flow of the circular cylinder. The streamwise time mean velocity and turbulence intensity of the wake flow field were used as the characteristics. Based on these characteristics, the optimal design parameter values were selected: n = 3, k = 1.0 mm (k/d = 2.5%), and θ = 60 deg. When the grooved cylinder was used, the streamwise time mean velocity in the wake of the cylinder showed 12.3% recovery, the wake width was reduced by 18.4% compared to the results from the smooth cylinder and we had 28.2% drag reduction from that of smooth cylinder. Also, the flow on the smooth cylinder separated at around 82 deg but the flow separation on a grooved cylinder appeared beyond 90 deg, that reducing the drag.

Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.

References

Richard, M. W., 2004, “Impact of Advanced Aerodynamic Technology on Transportation Energy Consumption,” SAE Paper No. 2004-01-1306.
Bearman, P. W., and Trueman, D. M., 1972, “An Investigation of the Flow Around Rectangular Cylinders,” Aeronaut. Q, 23, pp. 229–237.
Gad-el-Hak, M., 1989, “Flow Control,” Appl. Mech. Rev., 42, pp. 261–293. [CrossRef]
Lim, H. C., and Lee, S. J., 2002, “Flow Control of Circular Cylinders With Longitudinal Grooved Surfaces,” AIAA J., 40(10), pp. 2027–2036. [CrossRef]
Igarashi, T., 1986, “Effect of Tripping Wires on the Flow Around a Circular Cylinder Normal to Airstream,” Bull. JSME, 29(255), pp. 2917–2924. [CrossRef]
Price, P., 1956, “Suppression of the Fluid-Induced Vibration of Circular Cylinders,” J. Engrg. Mech. Div., pp. 1030-1–1030-21.
Bearman, P. W., and Harvey, J. K., 1993, “Control of Circular Cylinder Flow by the Use of Dimples,” AIAA J., 31(10), pp. 1753–1756. [CrossRef]
Abboud, J. E., Karaki, W. S., and Oweis, G. F., 2011, “Particle Image Velocimetry Measurements in the Wake of a Cactus-Shaped Cylinder,” ASME J. Fluids Eng., 133(9), p. 094502. [CrossRef]
Takeyoshi, K., and Michihisa, T., 1991, “Fluid Dynamic Effects of Grooves on Circular Cylinder Surface,” AIAA J., 29, pp. 2062–2068. [CrossRef]
Shinichi, T., Takuya, S., and Katsumi, A., 2004, “Drag Reduction Mechanism of a Circular Cylinder by Arc Grooves,” Trans. JSME B, 70(697), pp. 2363–2370. [CrossRef]
Robarge, T. W., and Stark, A. M., 2004, “Design Considerations for Using Indented Surface Treatments to Control Boundary Layer Separation,” 42nd AIAA Aerospace Sciences Meeting and Exhibit, Paper No. AIAA 2004-425.
Taguchi, K., and Konish, S., 1992, Taguchi Methods, ASI Press, Dearborn, MI.
Ha, J., Kim, T. Y., and Lee, D. H., 2003, “Design of Experiments for the Flow Field Around Cylinder,” Paper No. KSAS03-2238.
Wu, S., Ouyang, K., and Shiah, S., 2008, “Robust Design of Microbubble Drag Reduction in a Channel Flow Using the Taguchi Method,” Ocean Eng., 35(8–9), pp. 856–863. [CrossRef]
Landahl, M., “Drag on a Ground Vehicle in Separated Turbulent Flow,” Massachusetts Institute of Technology (unpublished).
Greiner, C. M., 1990, “Unsteady Hot-Wire and Hot-Film Wake Measurements of Automobile-Like Bluff Bodies,” Ph.D. thesis, Massachusetts Institute of Technology, Cambridge, MA.
Schlichting, H., 1979, Boundary Layer Theory, 7th ed., McGraw-Hill, New York.
Lee, B. Y., and Lee, H. W., 2007, “Shape Optimal Design of an Automotive Pedal Arm Using the Taguchi Method,” J. KSPE, 24(3), pp. 76–83.
Talley, S., and Mungal, G., 2002, “Flow Around Cactus-Shaped Cylinders,” Center for Turbulence Research, Annual Research Briefs 2002, pp. 363–376.
Yamagishi, Y., and Oki, M., 2005, “Effect of Grooves Shape on Drag Coefficient of a Circular Cylinder With Grooves,” J. Jpn. Soc. Des. Eng., 40(10), pp. 527–533.
Choi, J., Jeon, W. P., and Choi, H. C., 2006, “Mechanism of Drag Reduction by Dimple on a Sphere,” Phys. Fluid, 18, p. 041702. [CrossRef]

Figures

Grahic Jump Location
Fig. 2

Shape of the circular cylinder with grooves

Grahic Jump Location
Fig. 6

Average values of parameter θ in 2nd DOE

Grahic Jump Location
Fig. 7

Comparison of wake flow characteristics. (a) Streamwise time mean velocity profile; (b) streamwise turbulent intensity profile; and (c) vertical turbulent intensity profile.

Grahic Jump Location
Fig. 1

Examples of a grooved body. (a) Saguaro cactus and (b) low wind-pressure power cable.

Grahic Jump Location
Fig. 3

Diagram of measuring and data processing

Grahic Jump Location
Fig. 4

Schematic of PIV experimental setup

Grahic Jump Location
Fig. 5

Average values of design parameters in 1st DOE. (a) Factorial effect graph of ΔU; (b) factorial effect graph of ΔU′; (c) factorial effect graph of ΔU′; (d) factorial effect graph of Δuv.

Grahic Jump Location
Fig. 14

Streamwise flow velocity distribution near the cylinder surface

Grahic Jump Location
Fig. 15

Streamwise turbulent intensity distribution near the cylinder wall

Grahic Jump Location
Fig. 8

The instantaneous velocity field. (a) Smooth cylinder and (b) grooved cylinder.

Grahic Jump Location
Fig. 9

Ensemble averaged velocity field. (a) Smooth cylinder and (b) grooved cylinder.

Grahic Jump Location
Fig. 10

Contours for streamwise Reynolds normal stress. (a) Smooth cylinder and (b) grooved cylinder.

Grahic Jump Location
Fig. 11

Contours for vertical Reynolds normal stress. (a) Smooth cylinder and (b) grooved cylinder.

Grahic Jump Location
Fig. 12

Contours for shear stress. (a) Smooth cylinder and (b) grooved cylinder.

Grahic Jump Location
Fig. 13

Measuring points of flow near the surface of cylinder

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In