From bore-soliton-splash to rogue waves, a new wave-energy device and extreme tsunami run-up

This is a Preprint and has not been peer reviewed.

Downloads

Download Preprint

Authors

Onno Bokhove , Anna Kalogirou, Wout Zweers

Abstract

We explore extreme nonlinear water-wave amplification in a contraction or, analogously, wave amplification in crossing seas. The latter case can lead to extreme or rogue-wave formation at sea. First, amplification of a solitary-water-wave compound running into a contraction is disseminated experimentally, for small-scale and larger wavetanks. Maximum amplification in our bore-soliton-splash observed is circa tenfold. Subsequently, nonlinear and numerical modelling approaches are developed and validated for amplifying, contracting waves. Amplification phenomena observed have led us to develop a novel wave-energy device with wave amplification in a contraction used to enhance wave-buoy motion and magnetically-induced energy generation. An experimental proof-of-principle shows that our wave-energy device works. Furthermore, we develop a monolithic, mathematical model of wave hydrodynamics, buoy motion and electric power generation by magnetic induction, satisfying one grand variational principle in its conservative limit. Dissipative features, electrical wire resistance and nonlinear LED-loads, are added a posteriori. Preliminary simulations of our simplified (linear) wave-energy model are encouraging. Further highlights discussed are: exact modelling of crossing seas with Kadomtsev-Petviashvilis equation, bore-soliton-splash relevance to devastating Tohoku tsunami run-up in 2011, nonlinear wave-energy optimisation and a steel-soliton-splash artwork. (Note that this is a non-peer reviewed preprint submitted to EarthArXiv.)

DOI

https://doi.org/10.31223/osf.io/5p8un

Subjects

Environmental Sciences, Physical Sciences and Mathematics, Water Resource Management

Keywords

Dates

Published: 2019-03-11 08:02

Older Versions
License

Academic Free License (AFL) 3.0

Add a Comment

You must log in to post a comment.


Comments

There are no comments or no comments have been made public for this article.