How to Cite
Abstract
Tsunamis, generated by falling rigid bodies, have been numerically simulated using the MPS model, in the vertical two dimensions. The numerical result for the water surface displacement of the first wave is in harmony with the corresponding experimental result obtained using the cylinders. A tsunami component traveling toward the shore and running up the slope can be confirmed in the present cases. The tsunami height, immediately after the large circles enter the water, does not depend much on the offshore still water depth, while the tsunami-height reduction is suppressed, when the offshore still water depth is shallower. Conversely, the tsunami height, immediately after the small circles enter the water, increases as the offshore still water depth is shallower. Both the tsunami height, immediately after the falling bodies enter the water, and the reduction rate of tsunami height, are larger for the large circles than for the small circles. In the cases where the falling rigid bodies include both the large and small circles, the reduction rate of the water level near the tsunami source is larger, when the large circles are stacked on the offshore side at the initial condition.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/BEUWDCV_T5k
References
Gotoh, H., H. Ikari, T. Matsubara, T. Ito. 2011. Numerical simulation on tsunami due to sector collapse by solid-liquid two-phase flow model based on accurate particle method. J. JSCE B2 (Coastal Eng.), 67(2), I_196-I_200 (in Japanese with an English abstract).
Iribe, T. and E. Nakaza. 2011. An improvement of accuracy of the MPS method with a new gradient calculation model, J. JSCE, B2 (Coastal Eng.), 67(1), 36-48 (in Japanese with an English abstract).
Kakinuma, T. 2016. Tsunami generation due to a landslide or a submarine eruption, In: Tsunami (Ed. Mokhtari), InTech, 35-58.
Koshizuka, S. and Y. Oka. 1996. Moving-particle semi-implicit method for fragmentation of incompressible fluid, Nucl. Sci. Eng., 123, 421-434.
Marchenko, A. V., E. G. Morozov, S. V. Muzylev. 2012. A tsunami wave recorded near a glacier front, Nat. Hazards Earth Syst. Sci., 12, 415-419.
Panizzo, A. and Dalrymple, R. A. 2005. SPH modelling of underwater landslide generated waves, Coastal Eng. 2004 (Ed. Smith, J. M.), ASCE, 1147-1159.
Togashi, H. and Hirayama, Y. 1993. Hydraulic experiment on reappearance of the Ariake-kai tsunami in 1792, Proc. IUGG/IOC Int. Tsunami Symp. (Tsunami ’93), 741-754.