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Volume 11 - Winter and Spring 2019                   ijmt 2019, 11 - Winter and Spring 2019: 13-20 | Back to browse issues page


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Masoudi E. Hydrodynamic Characteristics of Inverse T-Type Floating Breakwaters. ijmt 2019; 11 :13-20
URL: http://ijmt.ir/article-1-651-en.html
Amirkabir University of Technology
Abstract:   (3643 Views)
Various types of floating breakwaters in different configuration and shapes are used to reduce wave height in coastal areas. The most important parameter in designing breakwaters are their shapes which determines hydrodynamic reaction to incident waves. Some cross sections are more effective and more efficient than others. In framework of numerical methods, finite element and boundary element methods are two popular and effective approaches which have been widely applied to floating body problems. In this study by using boundary element method, diffraction problem is solved for a new type of breakwater, which is called inverse T-type floating breakwater. To have a validated results, a rectangular cross section floating breakwater is analyzed and results are compared to previous researches. The final goal of this study is obtaining hydrodynamic characteristics of this new type of breakwater and comparing its response to sinusoidal waves with other conventional floating breakwaters. It is shown that in same weight, this new type of breakwater has better transmission coefficient among other conventional breakwaters and might be used as an efficient alternative.
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Type of Study: Research Paper | Subject: Offshore Hydrodynamic
Received: 2019/02/6 | Accepted: 2019/03/16

References
1. C. Garrett, 1971. Wave forces on a circular dock, Journal of Fluid Mechanics, 46, 129-139 [DOI:10.1017/S0022112071000430]
2. Black, J.L., Mei, C.C. and Bray, M.C.G., 1971. Radiation and scattering of water waves by rigid bodies. Journal of Fluid Mechanics, 46(1), 151-164 [DOI:10.1017/S0022112071000454]
3. A. Hulme, 1982. The wave forces acting on a floating hemisphere undergoing forced periodic oscillations, Journal of Fluid Mechanics, 121, 443-463 [DOI:10.1017/S0022112082001980]
4. G. Wu and R. E. Taylor, 1990. The second order diffraction force on a horizontal cylinder in finite water depth, Applied Ocean Research, 12, 106-111 [DOI:10.1016/S0141-1187(05)80001-X]
5. L. Berggren and M. Johansson, 1992. Hydrodynamic coefficients of a wave energy device consisting of a buoy and a submerged plate, Applied Ocean Research, 14, 51-58 [DOI:10.1016/0141-1187(92)90007-7]
6. J.-F. Lee, 1995. On the heave radiation of a rectangular structure, Ocean Engineering, 22, 19-34 [DOI:10.1016/0029-8018(93)E0009-H]
7. H. Hsu and Y.-C. Wu, 1997. The hydrodynamic coefficients for an oscillating rectangular structure on a free surface with sidewall, Ocean Engineering, 24, 177-199 [DOI:10.1016/0029-8018(96)00009-1]
8. Zheng, Y.H., You, Y.G. and Shen, Y.M., 2004. On the radiation and diffraction of water waves by a rectangular buoy. Ocean engineering, 31(8-9), 1063-1082 [DOI:10.1016/j.oceaneng.2003.10.012]
9. Zheng, Y.H., Shen, Y.M., You, Y.G., Wu, B.J. and Jie, D.S., 2004. On the radiation and diffraction of water waves by a rectangular structure with a sidewall. Ocean Engineering, 31(17-18), 2087-2104 [DOI:10.1016/j.oceaneng.2004.06.002]
10. Masoudi. E, Zeraatgar. H., (2015), Application of method of separation of variables for analyzing floating breakwater, IJMT, Vol (11) / No.22
11. Deng, Z., Wang, L., Zhao, X., & Huang, Z., (2019), Hydrodynamic performance of a T-shaped floating breakwater. Applied Ocean Research, 82, 325-336. [DOI:10.1016/j.apor.2018.11.002]
12. Sannasiraj, S.A., Sundar, V. and Sundaravadivelu, R., 1995. The hydrodynamic behaviour of long floating structures in directional seas. Applied Ocean Research, 17(4), 233-243 [DOI:10.1016/0141-1187(95)00011-9]
13. Christensen, E.D., Bingham, H.B., Friis, A.P.S., Larsen, A.K. and Jensen, K.L., 2018. An experimental and numerical study of floating breakwaters. Coastal Engineering, 137, 43-58 [DOI:10.1016/j.coastaleng.2018.03.002]
14. Ji, C., Deng, X. and Cheng, Y., 2018. An experimental study of double-row floating breakwaters. Journal of Marine Science and Technology, 1-13 [DOI:10.1007/s00773-018-0554-2]
15. B. Li, S. Lau, and C. Ng, (1991), Second order wave diffraction forces and run up by finite-infinite element method, applied ocean research, vol. 13, 270-286 [DOI:10.1016/S0141-1187(05)80051-3]
16. T. Yamamoto, A. Yoshida, and T. Ijima, (1980), Dynamics of elastically moored floating objects, applied ocean research, vol. 2, 85-92 [DOI:10.1016/0141-1187(80)90034-6]
17. E. Masoudi, H. Zeraatgar, 2017. Hydrodynamic Analysis of Various Cross Sections of Floating Breakwaters, Proceedings of 7th international offshore industries conference (Sharif University of technology, Tehran, Iran), pp. 82
18. E. Masoudi, 2016. Hydrodynamic study of Various Cross Sections of Floating Breakwaters, Proceedings of 18th marine industries conference (Iranian Association of Naval architecture and Marine engineering, Kish, Iran), pp. 26
19. Zhan, J.M., Chen, X.B., Gong, Y.J. and Hu, W.Q., 2017. Numerical investigation of the interaction between an inverse T-type fixed/floating breakwater and regular/irregular waves. Ocean engineering, 137, 110-119 [DOI:10.1016/j.oceaneng.2017.03.058]
20. Zhang, X. S., Ma, S., & Duan, W. Y., (2018). A new L type floating breakwater derived from vortex dissipation simulation. Ocean Engineering, 164, 455-464. [DOI:10.1016/j.oceaneng.2018.06.059]
21. Longuet-Higgins, M.S., 1977. The mean forces exerted by waves on floating or submerged bodies with applications to sand bars and wave power machines. Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 352(1671), 463-480. [DOI:10.1098/rspa.1977.0011]

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