모서리에 펜스를 가진 정방형주의 유체력저감 특성
Fluid Force Reduction Characteristics of a Square Prism Having Fences on the Corner
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초록
Abstract
The fluid force reduction of a square prism having fences on the corner was studied by the measuring the drag and lift acting on the prism and by the visualization experiment of the flow around the prism. The height of the fence was 10% of the square width and the range of Reynolds number considered was from Re=0.9×104 to Re=2.1×104. The drag of the prism was reduced about 6.8% and the amplitude of the lift was reduced by attaching two normal fences on the rear corners of the prism. In this case, the separated flow at the front corners was reattached on the upper and lower sides of the prism and the vortex streets at the wake region were appeared more slowly than that of the prototype prism.
참고문헌 (6)
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- "Suppression of fluid forces acting on a square prism by passive control", 119, pp.506~511 (1997)
- "Suppression of fluid forces on a square cylinder by flow control", 21, pp.151~167 (2005)
- "Experimental and Computational Study of Unsteady Wake Flow Behind a Bluff Body with a drag Reduction Device" (2001)
- "The effect of Turbulence on aerodynamic forces on a square cylinder with various corner shapes", 83, pp.135~145 (1999)