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Experimental realization of broadband control of water-wave-energy amplification in chirped arrays

A. J. Archer, H. A. Wolgamot, J. Orszaghova, L. G. Bennetts, M. A. Peter, and R. V. Craster
Phys. Rev. Fluids 5, 062801(R) – Published 24 June 2020
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Abstract

Water waves in natural environments are typically broadband, nonlinear, and dynamic phenomena. Taking concepts developed for slow light in optics, we address the challenge of designing arrays to control the spatial distribution of wave energy, and amplify specific frequencies from within target frequency bands at individual locations. Meter-scale wave-flume experiments, in which incident waves interact with a chirped array of eight vertical cylinders, demonstrate significant amplifications over a broad frequency range, as predicted numerically and theoretically.

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  • Received 18 April 2020
  • Accepted 28 May 2020

DOI:https://doi.org/10.1103/PhysRevFluids.5.062801

©2020 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

A. J. Archer1,2, H. A. Wolgamot1,2, J. Orszaghova1,2, L. G. Bennetts3,*, M. A. Peter4,5, and R. V. Craster6,7

  • 1Faculty of Engineering, Computing and Mathematics, University of Western Australia, WA 6009, Australia
  • 2Wave Energy Research Centre, University of Western Australia, WA 6009, Australia
  • 3School of Mathematical Sciences, University of Adelaide, SA 5005, Australia
  • 4Institute of Mathematics, University of Augsburg, 86135 Augsburg, Germany
  • 5Augsburg Centre for Innovative Technologies, University of Augsburg, 86135 Augsburg, Germany
  • 6Department of Mathematics, Imperial College London, London SW7 2AZ, United Kingdom
  • 7Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, United Kingdom

  • *luke.bennetts@adelaide.edu.au

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Issue

Vol. 5, Iss. 6 — June 2020

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