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3-D Numerical Experiment for Estimation of Equivalent Resistance Coefficient due to Multi-piers : Effect of Transverse Intervals  

Kim, Hyeong-Seok (Dept. of Civil Engineering, Hanyang University)
Choi, Jun-Woo (Dept. of Civil Engineering, Hanyang University)
Ko, Kwang-Oh (Dept. of Civil Engineering, Hanyang University)
Yoon, Sung-Bum (Dept. of Civil & Environ. Engrg., Hanyang University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.21, no.3, 2009 , pp. 216-223 More about this Journal
Abstract
A transverse drag interaction coefficient of the equivalent resistance coefficient formula for square multi-piers higher than water depth and arranged with equal intervals was studied. From the assumption that the energy loss due to drag interaction according to transverse intervals of resistance bodies is essentially identical to the energy loss due to thick orifice according to porosities, the transverse drag interaction coefficient was derived by employing the orifice's energy loss coefficient. The equivalent resistance coefficient formula including the drag interaction coefficient was compared with the numerical experiments using FLOW-3D, the performance of which was verified by Kim et al.(2008) in the experimental condition with the multi-piers. The comparisons showed good agreement and thus, the equivalent resistance coefficient formula, which does not only consider frictional resistance but also consider the multi-piers' drag resistance varied according to the intervals in longitudinal or transverse direction, was verified.
Keywords
equivalent resistance coefficient; drag interaction coefficient; numerical experiment; transverse interval; FLOW-3D;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Flow Science, Inc. (2000). FLOW-3D User Manual
2 Mei, C.C. (1989). The Applied Dynamic of Ocean Surface Waves. World-Sciectific, Singapore, 2nd printing with correction
3 Petryk, S. and Bosmajian, G. (1975). Analysis of Flow through Vegetation. J. of Hydraulic Engineering, ASCE, 101, 871-884
4 김형석, 최준우, 고광오, 윤성범 (2008). 구조물 밀집지역 범람수치모의를 위한 상당저항계수 산정 수치실험. 한국해안·해양공학회논문집, 한국해안·해양공학회, 20(6), 532-539
5 윤성범, 이종인, 남두현, 김선형 (2006). 유공벽의 두께를 고려한 파의 에너지손실계수. 한국해안·해양공학회지, 한국해안·해양공학회, 18(4), 321-328
6 Musleh, F.A. and Cruise, J.F. (2006). Functional Relationships of Resistance in Wide Flood Plains with Rigid Unsubmerged Vegetation. J. of Hydraulic Engineering, ASCE, 132, 163-171   DOI   ScienceOn
7 White F.M. (1994). Fluid Mechanics. 3rd Edition. McGraw-Hill, Inc
8 권갑근, 최준우, 윤성범 (2008). 개수로 다열기둥에 대한 상당저항계수 측정. 대한토목학회 논문집, 28(6), 635-642