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http://dx.doi.org/10.1016/j.ijnaoe.2017.03.006

Estimation of slamming coefficients on local members of offshore wind turbine foundation (jacket type) under plunging breaker  

Jose, Jithin (Department of Mechanical and Structural Engineering and Materials Science, University of Stavanger)
Choi, Sung-Jin (Loads Copenhagen, DNV GL)
Publication Information
International Journal of Naval Architecture and Ocean Engineering / v.9, no.6, 2017 , pp. 624-640 More about this Journal
Abstract
In this paper, the slamming coefficients on local members of a jacket structure under plunging breaker are studied based on numerical simulations. A 3D numerical model is used to investigate breaking wave forces on the local members of the jacket structure. A wide range of breaking wave conditions is considered in order to get generalized slamming coefficients on the jacket structure. In order to make quantitative comparison between CFD model and experimental data, Empirical Mode Decomposition (EMD) is employed for obtaining net breaking wave forces from the measured response, and the filtered results are compared with the computed results in order to confirm the accuracy of the numerical model. Based on the validated results, the slamming coefficients on the local members (front and back vertical members, front and back inclined members, and side inclined members) are estimated. The distribution of the slamming coefficients on local members is also discussed.
Keywords
Navier Stokes; Numerical simulation; Wave breaking; Slamming coefficient; Jacket;
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1 Alagan Chella, M., Bihs, H., Myrhaug, D.,Muskulus, M., 2016. Breaking solitary waves and breakingwave forces on a verticallymounted slender cylinder over an impermeable sloping seabed. J. Ocean Eng. Mar. Energy 1-19.
2 Allied Engineering, 2011. User's Manual for Advanced Parallel AMG Version 1.3. Tokyo.
3 Arntsen, O.A., Gudmestad, O.T., 2014. Wave slamming forces on truss structures in shallow water. In: Proceedings of the HYDRALAB IV Joint User Meeting. HYDRALAB, Lisbon.
4 Arntsen, O.A., Obhrai, C., Gudmestad, O.T., 2013. "Data Storage Report: Wave Slamming Forces on Truss Structure in Shallow Water," WaveSlam (HyIV-FZK-05), Technical Report. Norwegian University of Science and Technology and University of Stavanger.
5 Choi, S.J., Lee, K.H., Gudmestad, O.T., 2015. The effect of dynamic amplification due to a structure's vibration on breaking wave impact. Ocean Eng. 96, 8-20.   DOI
6 Choi, S.J., 2014. Breaking Wave Impact Forces on an Offshore Structure (PhD thesis (UiS No. 231)). University of Stavanger, Norway, at the Department of Mechanical and Structural Engineering and Material Science.
7 Christensen, E.D., Bredmose, H., Hansen, E.A., 2005. Extreme Wave Forces and Run-up on Offshore Wind Turbine Foundations. Copenhagen Offshore Wind, Copenhagen.
8 Goda, Y., Haranaka, S., Kitahata, M., 1966. Study of Impulsive Breaking Wave Forces on Piles. In: Report of Port and Harbour Research Institute, vol. 5(6), pp. 1-30.
9 Concept also in English language in Watanabe, A., Horikawa, K., (1974). Breaking wave forces on large diameter cell. Proc. 14th Intern. Conf. on Coastal Eng, 1741-1760.
10 Hirt, C.W., Nichols, B.D., 1981. Volume of fluid method for the dynamics of free boundaries. J. Comput. Phys. 39 (1), 201-225.   DOI
11 Hoque, A., 2002. Air Bubble Entrainment by Breaking Waves and Associated Energy Dissipation (PhD thesis). Toyohashi University Of Technology, Japan, at the Department of Architecture and Civil Engineering.
12 Huang, N.E., Zheng, S., Long, S.R., 1999. A new view of nonlinear water waves: the Hilbert Spectrum. Annu. Rev. Fluid Mech. 31, 417-457.   DOI
13 Hu, C., Kashiwagi, M., 2004. A CIP-based method for numerical simulations of violent free-surface flows. J. Mar. Sci. Technol. 9, 143-157.   DOI
14 Kamath, A., Chella, M.A., Bihs, H., Arntsen, O.A., 2016. Breaking wave interaction with a vertical cylinder and the effect of breaker location. Ocean Eng. 128, 105-115.   DOI
15 Jose, J., Podra_zka, O., Obhrai, C., Gudmestad, O.T., 2015. Experimental Analysis of Slamming Loads for the Truss Structures within the Framework of WaveSlam Project, Hydralab IV (http://www.hydralab.eu/project_publications.asp), Technical Report. University of Stavanger and University of Gdansk.
16 Jose, J., Choi, S.J., Lee, K.H., Gudmestad, O.T., 2016a. Breaking wave forces on an offshore wind turbine foundation (jacket type) in the shallow water. In: Proceedings of 26th International Ocean and Polar Engineering Conference, Rhodes, Greece, pp. 164-172.
17 Jose, J., Podra_zka, O., Obhrai, C., Gudmestad, O.T., Cieslikiewicz, W., 2016b. Methods for analysing wave slamming loads on truss structures used in offshore wind applications based on experimental data. J. Offshore Polar Eng. 26 (2), 100-108.   DOI
18 Lee, K.H., 2006. A Study on Time Domain Analysis of Nonlinear Dynamic Interaction Amount Waves, Currents and Bed Materials (PhD thesis). Nagoya University, Japan, at the Department of Civil Engineering.
19 Lee, K.H., Park, J.H., Baek, D.J., Cho, S., Kim, D.S., 2011. Discussion on optimal shape for wave power converter using oscillating water column. J. Korean Soc. Coast. Ocean Eng. 23 (5), 345-357.   DOI
20 Mo, W., Irschik, K., Oumeraci, H., Liu, P.L.F., 2007. A 3D numerical model for computing non-breaking wave forces on slender piles. J. Eng. Math. 58, 19-30.   DOI
21 Mo, W., Jensen, A., Liu, P.L.F., 2013. Plunging solitary wave and its interaction with a slender cylinder on a sloping beach. Ocean Eng. 74, 48-60.   DOI
22 Tang, L., Wai, O.W.H., 2016. Numerical study of air entrainment and bubble plume dynamics under breaking waves. In: Proceedings of 26th International Ocean and Polar Engineering Conference, Rhodes, Greece, pp. 669-672.
23 Obhrai, C., Bullock, G., Wolters, G., Muller, G., Peregrine, H., Bredmose, H., Grune, J., 2004. Violent wave impacts on vertical and inclined walls: large scale model tests. In: Proceedings of the 29th International Conference on Coastal Engineering, vol. 1(4), pp. 4075-4086.
24 Sawaragi, T., Nochino, M., 1984. Impact forces of nearly breaking waves on a vertical circular cylinder. Coast. Eng. Jpn. 27, 249-263.   DOI
25 Tanimoto, K., Takahashi, S., Kaneko, T., Shiota, K., 1986. Impulsive breaking wave forces on an inclined pile exerted by random waves. In: Proceedings of 20th International Conference on Ocean Engineering, pp. 2288-2302.
26 Wienke, J., Oumeraci, H., 2005. Breaking wave impact force on vertical and inclined slender pile-theoretical and large-scale model investigations. Coast. Eng. 52 (5), 435-462.   DOI
27 Amsden, A.A., Harlow, F.H., 1970. A simplified MAC technique for incompressible fluid flow calculation. J. Comput. Phys. 6, 322-325.   DOI