Generation of Gravity Waves by Pedal-Wavemakers
Experimental wave generation in channels is usually achieved through wavemakers (moving paddles) acting on the surface of the water. Although practical for engineering purposes, wavemakers have issues: they perform poorly in the generation of long waves and create evanescent waves in their vicinity....
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doaj-81d76169beaf4fbabd1ccfc9483bc4942021-07-01T00:04:59ZengMDPI AGFluids2311-55212021-06-01622222210.3390/fluids6060222Generation of Gravity Waves by Pedal-WavemakersIsis Vivanco0Bruce Cartwright1A. Ledesma Araujo2Leonardo Gordillo3Juan F. Marin4Departamento de Física, Facultad de Ciencia, Universidad de Santiago de Chile, Usach, Av. Ecuador 3493, Estación Central, Santiago 9160000, ChilePacific Engineering Systems International, 277–279 Broadway, Glebe, NSW 2037, AustraliaDepartamento de Física, Facultad de Ciencia, Universidad de Santiago de Chile, Usach, Av. Ecuador 3493, Estación Central, Santiago 9160000, ChileDepartamento de Física, Facultad de Ciencia, Universidad de Santiago de Chile, Usach, Av. Ecuador 3493, Estación Central, Santiago 9160000, ChileDepartamento de Física, Facultad de Ciencia, Universidad de Santiago de Chile, Usach, Av. Ecuador 3493, Estación Central, Santiago 9160000, ChileExperimental wave generation in channels is usually achieved through wavemakers (moving paddles) acting on the surface of the water. Although practical for engineering purposes, wavemakers have issues: they perform poorly in the generation of long waves and create evanescent waves in their vicinity. In this article, we introduce a framework for wave generation through the action of an underwater multipoint mechanism: the pedal-wavemaking method. Our multipoint action makes each point of the bottom move with a prescribed pedalling-like motion. We analyse the linear response of waves in a uniform channel in terms of the wavelength of the bottom action. The framework naturally solves the problem of the performance for long waves and replaces evanescent waves by a thin boundary layer at the bottom of the channel. We also show that proper synchronisation of the orbital motion on the bottom can produce waves that mimic deep water waves. This last feature has been proved to be useful to study fluid–structure interaction in simulations based on smoothed particle hydrodynamics.https://www.mdpi.com/2311-5521/6/6/222gravity surface waveswave-makerswater-wave generationcomputational fluid dynamics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Isis Vivanco Bruce Cartwright A. Ledesma Araujo Leonardo Gordillo Juan F. Marin |
spellingShingle |
Isis Vivanco Bruce Cartwright A. Ledesma Araujo Leonardo Gordillo Juan F. Marin Generation of Gravity Waves by Pedal-Wavemakers Fluids gravity surface waves wave-makers water-wave generation computational fluid dynamics |
author_facet |
Isis Vivanco Bruce Cartwright A. Ledesma Araujo Leonardo Gordillo Juan F. Marin |
author_sort |
Isis Vivanco |
title |
Generation of Gravity Waves by Pedal-Wavemakers |
title_short |
Generation of Gravity Waves by Pedal-Wavemakers |
title_full |
Generation of Gravity Waves by Pedal-Wavemakers |
title_fullStr |
Generation of Gravity Waves by Pedal-Wavemakers |
title_full_unstemmed |
Generation of Gravity Waves by Pedal-Wavemakers |
title_sort |
generation of gravity waves by pedal-wavemakers |
publisher |
MDPI AG |
series |
Fluids |
issn |
2311-5521 |
publishDate |
2021-06-01 |
description |
Experimental wave generation in channels is usually achieved through wavemakers (moving paddles) acting on the surface of the water. Although practical for engineering purposes, wavemakers have issues: they perform poorly in the generation of long waves and create evanescent waves in their vicinity. In this article, we introduce a framework for wave generation through the action of an underwater multipoint mechanism: the pedal-wavemaking method. Our multipoint action makes each point of the bottom move with a prescribed pedalling-like motion. We analyse the linear response of waves in a uniform channel in terms of the wavelength of the bottom action. The framework naturally solves the problem of the performance for long waves and replaces evanescent waves by a thin boundary layer at the bottom of the channel. We also show that proper synchronisation of the orbital motion on the bottom can produce waves that mimic deep water waves. This last feature has been proved to be useful to study fluid–structure interaction in simulations based on smoothed particle hydrodynamics. |
topic |
gravity surface waves wave-makers water-wave generation computational fluid dynamics |
url |
https://www.mdpi.com/2311-5521/6/6/222 |
work_keys_str_mv |
AT isisvivanco generationofgravitywavesbypedalwavemakers AT brucecartwright generationofgravitywavesbypedalwavemakers AT aledesmaaraujo generationofgravitywavesbypedalwavemakers AT leonardogordillo generationofgravitywavesbypedalwavemakers AT juanfmarin generationofgravitywavesbypedalwavemakers |
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1721349589035909120 |