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Experimental Study on the Flow around a Square Prism with a Splitter Plate  

Park Jong-Kyu (부산대학교 기계공학과 대학원)
Seo Seong-Ho (부산대학교 기계공학과 대학원)
Boo Jung Sook (부산대학교 기계공학부, 부산대학교 기계기술연구소)
Abstract
This experimental study is conducted to investigate effects of a splitter plate, which is set on the back side of a square prism in the uniform flow. The Reynolds number is $1.44{\times}10^{4}$ based on the width of the square prism. The measurement of velocity vector and pressure distribution are carried out 4 cases of length in the range of 0.5L to 2.0L with 0.5L interval and 3 cases of Position at 0L, 0.25L, 0.5L, Flow visualization is also executed by smoke-wire method to understand the mechanism of vortex formation The results show the strong vortex shedding patterns and drags are decreased effectively, when the position of splitter plate is 0L. And the drag reduction rate is in inverse proportion to the splitter plate length
Keywords
Splitter Plate; Square prism; Vertex shedding; Drag; Conditional Phase average technique;
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1 J. M. Cimbala and S. Grag, 'Flow in the wake of a Freely Rotatable Cylinder with Splitter Plate, AIAA Vol. 29, No. 6, pp.1001-1003, 1991   DOI
2 부정숙, 류병남, 조민기, '트리핑와이어가 설치된 원형실린더 주의의 유동현상연구', 한국박용기관학회지, 제28권, 제3호, pp.413-422, 2004
3 S. I. Lee and S. J. Lee, 'Drag Reduction of a Circular Cylinder with a Front Small Control Rot' KSAS, Vol. 30, No. 3, pp.87-95, 2004
4 부정숙, 김경천, 류병남, '회전하는 원주 후류의 2차원 난류구조', 한국박용기관학회지 제16권 제4호, pp.39-49, 1992
5 J. H. Gerrard, 'The mechanins of the formation region of vortices behind bluff bodies,' Journal of Fluid mechanics. Vol. 25, pp.401-403, 1996   DOI
6 선승한, 황종연, 양경수, '분리된 분할판에 의한 원형단면 실린더의 항력감소', 대학기계학회논문집 B권, 제25권 제11호, pp.1632-1639, 2001
7 Bearman, P. W. and Trueman, D. M., 'An Investigation of the Flow around Rectangular Cylinder', Aeronaut. Q, Vol. 23, pp.229-237, 1972
8 E. Rathakrishnan, 'Effect of Splitter Plate on Bluff Body Drag', AIAA Vol. 37 No. 9, pp.1125-1126, 1999   DOI
9 J. S. Boo, K. C. Kim, and B. N. Rvu, 'Characteristics of Vortex Shedding behind a Circular Cylinder with Serrated Fins' KSME, Vol. 25, No. 8, pp.1077-1086, 2001
10 V. Mansingh and P. H. Oosthuizen, 'Effect of Splitter Plates on the wake Flow Behind a Bluff Body, AIAA Vol. 28, No5, pp.778-783, 1990   DOI
11 부정숙, 류병남, 심정훈 '엇갈림 배열에서 회전원주에 의한 정지원주의 공력 및 후류유동제어', 한국박용기관학회지, 제25권, 제4호, pp.2601-2610, 2001
12 O. M. Griffin, 'A note on bluff body vortex formation,' Journal of Fluid mechanics. Vol. 284, pp.217-224, 1982
13 J. S. Boo, C. S. Kim, S. H. Seo, and H. T. Seo, 'Effects of Spinning Control Cylinder set in the Leading Edge of a Square Prism on the Flows, KSME, Fall annual meeting B, pp.569-574, 1998
14 J. S. Boo, J. P. Yang, and Y. B. Jung, 'Flow Characteristic of the Wake Behind a Square Prism by Controlling the Separated Shear Layer', KSME, Vol. 17, No. 11, pp.2840-2849, 1993
15 K. Y. Kwon, and H. C. Choi, 'A Passive Control of Vortex Shedding Using a Splitter Plate Attached to a Circular Cylinder', KSME, Fall annual meeting B, pp.502-507, 1994
16 H. Tennekes, J. L. Lumley, 'A first course in turbulence', MIT press, 1972
17 박외철 '분리판의 길이가 항력감소에 미치는 영향' 대한기계학회 추계학술대회 논문집 B 44-47, 1992