Browse > Article
http://dx.doi.org/10.9765/KSCOE.2011.23.3.248

A Study on Wave Responses of Vertical Tension-Leg Circular Floating Bodies  

Lee, Kwang-Ho (Department of Civil Engineering, Nagoya University)
Kim, Chang-Hoon (Hyundai Engineering & Construction)
Kim, Do-Sam (Department of Civil Engineering, Korea Maritime University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.23, no.3, 2011 , pp. 248-257 More about this Journal
Abstract
In the present study, we proposed a new numerical wave tank model to analyze the vertical tension-leg circular floating bodies, using a 2-D Navier-Stokes solver. An IBM(Immersed Boundary Method) capable of handling interactions between waves and moving structures with complex geometry on a standard regular Cartesian grid system is coupled to the VOF(Volume of Fluid) method for tracking the free surface. Present numerical results for the motions of the floating body were compared with existing experimental data as well as numerical results based on FAVOR(Fractional Area Volume Obstacle Representation) algorithm. For detailed examinations of the present model, the additional hydraulic experiments for floating motions and free surface transformations were conducted. Further, the versatility of the proposed numerical model was verified via the numerical and physical experiments for the general rectangular floating bodies. Numerical results were compared with experiments and good agreement was archived.
Keywords
numerical wave tank; IBM; VOF method; floating body; floating motion; free surface transformation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Hirt, C.W. and Nichols, B.D. (1981). Volume of Fluid(VOF) method for the dynamics of free boundaries. Journal of Computational Physics, 39, 201-225.   DOI   ScienceOn
2 Iwata, K., Kim, D.S., Asai, T. and Shimoda, N. (1990). Experimetnal study on wave breaking on a submerged floating body. Proceedings of Coastal Engineering, JSCE, 37, 604-608 (in Japanese).   DOI
3 Choi, J.L, Oberoi, R.C., Edward, J.R. and Rosati, J.A. (2007). An immersed boundary method for complex incompressible flows. Journal of Computational Physics, 224, 757-784.   DOI   ScienceOn
4 Gilmanov, A., Sotiropoulus, F. and Balaras, E. (2003). A general reconstruction algorithm for simulating flows with 3D, geometrically complex, moving bodies. Journal of Computational Physics, 191, 660-669.   DOI   ScienceOn
5 Nakamura, T., Kamikawa, H., Kohno, T. and Makimoto, K. (2000). Performance and wave force characteristics of a double curtainwalled breakwater with different drafts. Proceedings of Coastal Engineering, JSCE, 47, 951-955 (in Japanese).   DOI
6 Peskin, C.S. (1977). Numerical analysis of blood flow in the heart. Journal of Computational Physics, 25, 220-252.   DOI   ScienceOn
7 Griffith, B.E. and Peskin, C.S. (2005). On the order of accuracy of the immersed boundary method: Higher order convergence rates for sufficiently smooth problems. Journal of Computational Physics, 208, 75-105.   DOI   ScienceOn
8 이광호, 이상기, 신동훈, 김도삼 (2008). 복수 연직 주상구조물에 작용하는 비선형파력과 구조물에 의한 비선형파랑변형의 3차원 해석. 한국해안.해양공학회논문집, 20(1), 1-13.
9 이정열, 송무석 (2005). 부방파제를 이용한 원전항의 정온효과 수치해석. 한국해양환경공학회지, 8(1), 23-30.
10 Ataur Rahman, M., Mizutani, N. and Kawasaki, K. (2006). Numerical modelling of dynamic responses and mooring forces of submerged floating breakwater. Coastal Engineering, 53, 799-815.   DOI   ScienceOn
11 김도삼, 이광호, 최낙훈, 윤희면 (2004). 신형식 부방파제의 파랑제어에 관한 연구. 한국해안.해양공학회지, 16, 1-9.
12 Lee, K.H. and Mizutani, N. (2009). A numerical wave tank using directing-forcing immersed boundary method and its application to wave force on a horizontal cylinder. Coastal Engineering Journal, 15(1), 27-48.
13 Lima e Silva, A.L.F., Silveria-Neto, A. and Damasceno, J.J.R. (2003). Numerical simulation of two dimensional flows over a circular cylinder using the immersed boundary method. Journal of Computational Physics, 351, 351-370.
14 Mohd-Yusof, J. (1997). Combined immersed boundaries/B-splines methods for simulations in complex geometries. CTR Annual Research Briefs, NASA Ames / Stanford University.
15 Kim, D.S. and Iwata, K. (1992). Dynamic behaviour of tautly moored semi-submerged structure with pressurized air-chamber and resulting wave transformation. Coastal Engineering in Japan, JSCE, 34(2), 223-242.
16 Kojima, H., Yan, S., Irie, I. and Sekimoto, T. (1998). Hydraulic properties of a vertically-motioned hybrid wave absorbing structure. Proceedings of Coastal Engineering, JSCE, 45, 711-715 (in Japanese).   DOI