Numerical analysis of interaction between a solitary wave and a rectangular fixed semisubmerged body

O. I. Gusev^a, V. S. Skiba^ab, G. S. Khakimzianov^a, L. B. Chubarov<sup>a

a</sup> Federal Research Center for Information and Computational Technologies, Novosibirsk, Russia
^b Novosibirsk State University, Novosibirsk, Russia

Abstract: The results of numerical simulation within the framework of a two-dimensional shallow water model of the interaction of a solitary wave with a stationary semi-submerged body with a rectangular cross section are presented. A comparison of these results with the results of calculations based on a model of irrotational three-dimensional flows showed that for small amplitudes of the incident wave, the modeling accuracy is satisfactory. It has been established that neglecting the diffraction of a solitary wave on the surface of a cylinder when using a one-dimensional model of shallow water leads to overestimates of the maximum values of the wave runup on the edge of the cylinder and the force loads on it.

Keywords: solitary wave, rectangular semisubmerged body, two-dimensional and one-dimensional shallow water equations, matching conditions, offset, force action.

UDC: 532.5+519.63

Received: 31.05.2023
Revised: 22.06.2023
Accepted: 26.06.2023

DOI: 10.15372/PMTF202315324

 English version: Journal of Applied Mechanics and Technical Physics, 2024, 64:6, 1046–1057

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