Abstract
The characteristics of the flow field of a square prism with detached splitter plate in its wake were investigated by measuring the fluid force on the prism and by visualizing the flow field through particle image velocimetry (PIV) with a high Reynolds number (Re = 10,000). The experimental parameters included the ratios of the splitter and prism widths (H/B = 0.5–1.5) as well as the gap ratios (G/B = 0–2) between the prism and the splitter plate at a high Reynolds number (Re = 10,000). The drag reduction rate of the square prism increased with increasing H/B for the same G/B; meanwhile, it increased and then decreased with increasing G/B for the same H/B. When the detached splitter place was installed, vortices rotating in opposite directions were generated on its upper and lower sides. Reverse flow was caused by the vortices in the wake region of the square prism, and the prism drag was decreased by the reverse flow.
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References
T. Igarashi, Drag reduction of a square prism by flow control using a small rod, Journal of Wind Engineering and Industrial Aerodynamics, 69 (71) (1997) 141–153.
B. Khalighi, S. Zang, C. Korokilas and S. R Balkanyi, Experimental and computational study of unsteady wake flow behind a bluff body with a drag reduction device, Society of Automotive Engineers (2001) 2001-01-1042.
T. Tamura and T. Miyagi, The effect of Turbulence on aerodynamic forces on a square cylinder with various corner shapes, Journal of Wind Engineering and Industrial Aerodynamics, 83 (1999) 135–145.
K. D. Ro and K. S. Kim, Fluid force reduction characteristics of a square prism having fences on the coner, Journal of the Korean Society of Marine Engineers, 30 (3) (2006) 389–395.
K. D. Ro, K. S. Kim and S. K. Oh, The visualization of the flow-field around square prism having fences using the PIV, Journal of The Korean Society of Marine Engineering, 32 (1) (2008) 94–99.
K.-D. Ro and B.-S Zhu, Drag reduction from fences on a square prism near plane wall, Journal of Mechanical Science and Technology, 25 (12) (2011) 3063–3068.
W.-C. Park, Effect of the length of a splitter plate on drag reduction, Translation of the Korean Society of Mechanical Engineersz (B), 17 (11) (1993) 2809–2815.
M. Winkler, K. Becker, C. J. Doolan, F. Kameier and C. O. Paschereit, Aeroacoustic effects of a cylinder/plate configuration, American Institute of Aeronautics and Astronautics Journal, 70 (5) (2012) 1–12.
M. S. M. Ali, C. J. Doolan and V. Wheatley, Low Reynolds number flow over a square cylinder with a splitter plate, Physics of Fluids, 23 (3) (2011) 033602–1–033602–12.
Con J. Doolan, Flat-plate interaction with the near wake of a square cylinder, The American Institute of Aeronautics and Astronautics Journal, 47 (2) (2009) 475–478.
M. S. M. Ali, C. J. Doolan and V. Wheatley, Low Reynolds number flow over a square cylinder with a detached flat plate, International Journal of Heat Fluid Flow, 36 (2012) 133–141.
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Ro, KD. Experimental characterization of the flow field of square prism with a detached splitter plate at high reynolds number. J Mech Sci Technol 28, 2651–2657 (2014). https://doi.org/10.1007/s12206-014-0621-5
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DOI: https://doi.org/10.1007/s12206-014-0621-5