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Shallow water wave propagation over curved wave guides

Published online by Cambridge University Press:  07 August 2025

Edgardo Rosas Open the ORCID record for Edgardo Rosas [Opens in a new window] ,
Fabián Sepúlveda-Soto  and
Claudio Falcón Open the ORCID record for Claudio Falcón [Opens in a new window]
Edgardo Rosas*
Affiliation:
Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla, Santiago 4873, Chile Laboratoire Gulliver (UMR 7083), CNRS, ESPCI Paris, PSL Research University, Paris, France
Fabián Sepúlveda-Soto*
Affiliation:
Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla, Santiago 4873, Chile Departamento de Ingeniería Matemática, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile
Claudio Falcón*
Affiliation:
Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla, Santiago 4873, Chile
*
Corresponding authors: Claudio Falcón, cfalcon@uchile.cl; Edgardo Rosas, edgardo.rosas@espci.fr; Fabián Sepúlveda-Soto, fsepulveda@dim.uchile.cl
Corresponding authors: Claudio Falcón, cfalcon@uchile.cl; Edgardo Rosas, edgardo.rosas@espci.fr; Fabián Sepúlveda-Soto, fsepulveda@dim.uchile.cl
Corresponding authors: Claudio Falcón, cfalcon@uchile.cl; Edgardo Rosas, edgardo.rosas@espci.fr; Fabián Sepúlveda-Soto, fsepulveda@dim.uchile.cl
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Abstract

We report on the experimental and theoretical characterisation of shallow water wave guiding along a curved wave guide. A curved beam of fixed height and width positioned at the bottom of a wave tank generates an effective step-like perturbation which can guide surface water waves. We construct a linear wave theory for this wave propagation and characterise the parameter region where wave guiding can develop, as well as the possible guided modes, their profile and propagation constant. The theoretical analysis is supported by experimental surface wave data. A good agreement is found between experimental data and theoretical predictions, which gives insight into the possible harnessing of wave-guiding phenomena for energy harvesting.

JFM classification

Waves/Free-surface Flows: Waves/Free-surface Flows Waves/Free-surface Flows: Surface gravity waves Waves/Free-surface Flows: Wave-structure interactions

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Type
JFM Papers
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Journal of Fluid Mechanics , Volume 1016 , 10 August 2025 , A64
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© The Author(s), 2025. Published by Cambridge University Press

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