NUMERICAL STUDY ON MOVEMENT OF TSUNAMI BOULDER AND STORM BOULDER BY SPH METHOD

Takashi Yamamoto; Tomohiro Yasuda

doi:10.9753/icce.v36v.currents.15

No. 36v (2020), Swash, Nearshore Currents, and Long Waves

No. 36v (2020)

NUMERICAL STUDY ON MOVEMENT OF TSUNAMI BOULDER AND STORM BOULDER BY SPH METHOD

Swash, Nearshore Currents, and Long Waves

https://doi.org/10.9753/icce.v36v.currents.15

Published 2020-12-28

Takashi Yamamoto
Tomohiro Yasuda

Takashi Yamamoto

Tomohiro Yasuda

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How to Cite

Yamamoto, T., & Yasuda, T. (2020). NUMERICAL STUDY ON MOVEMENT OF TSUNAMI BOULDER AND STORM BOULDER BY SPH METHOD . Coastal Engineering Proceedings, (36v), currents.15. https://doi.org/10.9753/icce.v36v.currents.15

Abstract

Smoothed Particle Hydrodynamics (SPH) is known as very useful method for large deformation problems, such as movement of wave absorbing blocks and sliding of caisson breakwater. Also, in the coastal area, boulders launched by tsunami and by high waves with typhoons (named tsunami boulders and storm boulders) are focused on because of risk assessment towards the tsunami or super typhoons. However, the difference of their movement mechanism have been rarely investigated in detail. This study aims to simulate the movement of the tsunami boulders and storm boulders, comparing with the hydraulic experiment, and evaluating the transport characteristics. Wave elevation and boulder displacement were reproduced in the numerical wave flume well compared to physical model. Also, there is difference between solitary and irregular waves when waves act on boulders.

Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/WOfXbU7m_8E

https://doi.org/10.9753/icce.v36v.currents.15

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References

Crespo, A.J.C. et al.(2015): DualSPHysics: Open-source parallel CFD solver based on Smoothed Particle Hydrodynamics (SPH), Computer Physics Communications, 187, 204-216

Kiso, S. et al.(2018): Experimental Study on Transport Characteristics of Coastal Boulders by Tsunami and High Waves, Jour. of JSCE, Ser. B2 (Coastal Eng.), 74, 2, I_361-I_366.

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NUMERICAL STUDY ON MOVEMENT OF TSUNAMI BOULDER AND STORM BOULDER BY SPH METHOD

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