NUMERICAL SIMULATION FOR TSUNAMI-HEIGHT REDUCTION USING A VERY LARGE FLOATING STRUCTURE

Taro Kakinuma; Tatsuya Nakahira; Takatsugu Kamba; Takahiro Murakami; Keisuke Nakayama

doi:10.9753/icce.v35.waves.24

No. 35 (2016), Waves

No. 35 (2016)

NUMERICAL SIMULATION FOR TSUNAMI-HEIGHT REDUCTION USING A VERY LARGE FLOATING STRUCTURE

Waves

https://doi.org/10.9753/icce.v35.waves.24

Published 2017-06-23

Taro Kakinuma⁺⁻
Tatsuya Nakahira⁺⁻
Takatsugu Kamba⁺⁻
Takahiro Murakami⁺⁻
Keisuke Nakayama⁺⁻

Taro Kakinuma

Kagoshima University

Tatsuya Nakahira

Echo Co. Ltd.

Takatsugu Kamba

Daitetsu Kogyo Co., Ltd.

Takahiro Murakami

Kansai University

Keisuke Nakayama

Kobe University

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Keywords

VLFS
tsunami
wave-height reduction
thin-plate
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. https://doi.org/10.9753/icce.v35.waves.24

Abstract

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.

https://doi.org/10.9753/icce.v35.waves.24

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References

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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.

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.

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NUMERICAL SIMULATION FOR TSUNAMI-HEIGHT REDUCTION USING A VERY LARGE FLOATING STRUCTURE

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