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wave-height reduction
floating-body wave

How to Cite

Kakinuma, T., Nakahira, T., Kamba, T., Murakami, T., & Nakayama, K. (2017). NUMERICAL SIMULATION FOR TSUNAMI-HEIGHT REDUCTION USING A VERY LARGE FLOATING STRUCTURE. Coastal Engineering Proceedings, 1(35), waves.24.


The tsunami-height reduction using a very large floating structure, i.e., VLFS, is discussed, with the water waves, interacting with a floating thin-plate, simulated numerically. The final tsunami-height reduction rate increases, as VLFS length, VLFS flexural rigidity, or the wave height of an incident tsunami, is increased. If two VLFSs are utilized, the final tsunami-height reduction rate, also depends on the distance between the VLFSs. In two-dimensional tsunami propagation, another wave propagates to the outside, along the crest line of the main wave, leading to an additional tsunami-height reduction.


Hermans, A. J. 2000. A boundary element method for the interaction of free-surface waves with a very large floating flexible platform, Journal of Fluids and Structures, 14, 943-956.

Kakinuma, T. 2001. A set of fully nonlinear equations for surface and internal gravity waves, Proceedings of 5th International Conference on Computer Modelling of Seas and Coastal Regions, WIT Press, 225-234.

Kakinuma, T., K. Yamashita, and K. Nakayama. 2012. Surface and internal waves due to a moving load on a very large floating structure, Journal of Applied Mathematics, 2012, 830530, 14p.

Kashiwagi, M. 2004. Transient responses of a VLFS during landing and take-off of an airplane, Journal of Marine Science and Technology, 9, 14-23.

Nakayama, K. and T. Kakinuma. 2010. Internal waves in a two-layer system using fully nonlinear internal-wave equations, International Journal of Numerical Methods in Fluids, 62, 574-590.

Sakai, S., X. Liu, M. Sasamoto, and T. Kagesa. 1998. Experimental and numerical study on the hydroelastic behavior of VLFS under tsunami, Proceedings of 2nd International Conference on Hydroelasticity in Marine Technology, RIAM, Kyushu University, 385-391.

Yamashita, K. and T. Kakinuma. 2014. Properties of surface and internal solitary waves, Proceedings of 34th International Conference on Coastal Engineering, waves. 45, 15p.

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