Abstract
This paper describes a numerical implementation of a Hamiltonian Boussinesq wave-body interaction for irrotational flow as formulated in van Groesen and Andonowati (2017), with a restriction of one horizontal coordinate and a cross section of the body. Part of the HAWASSI (Hamiltonian Wave-Ship-Structure Interaction) software we developed allows for numerical discretisation of the surface waves using spectral methods. Non-smooth effects from the body-fluid interaction are included in the design of a virtual wave in the body area, which is determined by the boundary conditions on the body hull. Except for a comparison with standard cases in the literature, the performance of the code is shown by comparison with measurements of an experiment on the slow-drift motion of a rectangular barge moored above a sloping beach and interacting with irregular waves, in the barge beam direction, including the infra-gravity waves from the runup on the shore.
Original language | English |
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Pages (from-to) | 244-252 |
Journal | International Journal of Offshore and Polar Engineering |
Volume | 32 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2022 |
Keywords
- coastal wave runup
- diffrac-tion-radiation
- focused waves
- Hamiltonian formulation
- ringing
- slow-drift motion
- Wave-body interaction