Damping of surface waves by floating particles

Bruce R. Sutherland and Neil J. Balmforth
Phys. Rev. Fluids 4, 014804 – Published 15 January 2019

Abstract

Laboratory experiments are performed examining the enhanced damping of surface waves by floating spherical particles. Without particles, wave amplitudes decay exponentially in time; with the particles, the dissipation is enhanced such that waves are arrested in finite time. Initially the decay is exponential with an e-folding time that is inversely proportional to the depth of the particle layer, but independent of particle size. At later times and lower amplitudes, the decay turns into a power law (tst)q, with exponent lying between q2 and 3. The stopping time ts also decreases with increasing particle layer depth.

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  • Received 26 August 2018

DOI:https://doi.org/10.1103/PhysRevFluids.4.014804

©2019 American Physical Society

Physics Subject Headings (PhySH)

Fluid Dynamics

Authors & Affiliations

Bruce R. Sutherland1,2,* and Neil J. Balmforth3,4

  • 1Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
  • 2Department of Earth & Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E3
  • 3Department of Mathematics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z2
  • 4Department of Earth, Ocean, and Atmospheric Sciences, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4

  • *bruce.sutherland@ualberta.ca

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Vol. 4, Iss. 1 — January 2019

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