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Drag Reduction Characteristics of Cylinder Having Square Dimpled Surface  

노기덕 (경상대학교 수송기계공학부·해양산업연구소)
박지태 (경상대학교 대학원 기관공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.26, no.2, 2002 , pp. 233-239 More about this Journal
Abstract
The drag reduction of the cylinder having square dimpled surface was studied by the measuring the drag force acting on the cylinder. The level of the drag reduction was changed by the arrangement shape of the square grooves and Reynolds number. The drag of the cylinder was reduced about 28% with proper arrangement of square grooves. The flow field around the cylinder having grooves at the minimum drag was visualized by using post color ink in order to see the influence of the grooves. In this case, the separation points were silted rearward and the wake region was smaller than that of the smooth cylinder.
Keywords
Fluid Mechanics; Circular Cylinder; Flow Separation; Fluid Force; Flow Visualization;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Influence of surface roughness on the cross-flow around a circular cylinder /
[ Achenbach E ] / J.of Fluid Mech.   DOI
2 Surface roughness effects on the mean flow past circular cylinders /
[ Guven O;Farell C;Patel V.C ] / J.of Fluid Mech.   DOI   ScienceOn
3 Modern developments in flow control /
[ Gad-el-Hak M ] / Appl.Mech.Rev.   DOI   ScienceOn
4 Flow Control Around a Circular Cylinder by a New Method(2nd Report,Fluid Forces Acting on the Cylinder) /
[ Igarashi T;Tsutsui T ] / Trans.of the JSME
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[ 임희창;이상준 ] / 대한기계학회 2000년도 춘계학술대회 논문집 B
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7 Flow Control around a Circular Cylinder by a New Method(3rd Report,Properties of Reattachment Jet) /
[ Igarashi T;Tsutsui T ] / Trans.of the JSME   DOI
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[ 노병준;박종호 ] / 유체역학