ATTRIBUTE | VALUE |
type | A |
database id | 9108 |
title | On pressure forcing techniques for numerical modelling of unidirectional nonlinear water waves |
authors | Paprota M. |
pages | 101857-1 — 101857- |
DOI | 10.1016/j.apor.2019.101857 |
keywords | Pressure forcing, Nonlinear waves, Numerical modelling, Spectral method |
affiliations | - Institute of Hydro-Engineering, Polish Academy of Sciences, ul. Kościerska 7, 80-328 Gdańsk, Poland
|
abstracts | A method of incorporating pressure forcing into a nonlinear potential flow wave model is presented. A semi-analytical pseudo-spectral method is used to calculate dynamic response of a water body exposed to evolving local pressure distribution. Surface slope coherent and slope proportional pressure functions are directly applied through a pressure term appearing in the dynamic free-surface boundary condition of a formulated initial boundary-value problem. First, a monochromatic pressure distribution is used to generate steady regular waves of permanent form. The pressure-induced wave motion exhibits stable harmonic structure for deepwater, transitional water and shallow water waves. In the next step, a more complex pressure system is used to initiate multi-component wave propagation. It is demonstrated that the proposed method provides well-posed initial conditions for studying various water wave scenarios within a framework of nonlinear potential flow solutions. |
attributes | [reviewed] [scientific] |
language | en |