Breaking waves on a dynamic Hele-Shaw beach

Onno Bokhove, Bram van der Horn, Devaraj van der Meer, Wout Zweers, Anthony Thornton

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Abstract

We report the formation of quasi-steady beaches and dunes via breaking waves in our tabletop ‘Hele-Shaw’ beach experiment. Breaking waves are generated by a wave maker, and zeolite particles act as sand. The tank is narrow, just over one-particle diameter wide, creating a quasi-2D set-up. Classical breaker types are observed on a time-scale of about a second. Beach formation under breakers occurs on a longer time-scale, and is a matter of minutes for a range of mono-chromatic wave frequencies. Alternating the wave maker motion between two frequencies generally leads to beach formation but occasionally to formation of a stable dune with water on either side. Finally, the Hele-Shaw configuration explored here experimentally lends itself to multi-scale modeling of beach dynamics.
Original languageEnglish
Title of host publicationProceedings 3rd International Symposium on Shallow Flows (ISSF)
Subtitle of host publicationJune 4-6, 2012 University of Iowa, Iowa City, IA, USA
Place of PublicationIowa City, IA
PublisherIIHR
Pages1-10
Number of pages10
Publication statusPublished - Jun 2012
Event3rd international Symposium on Shallow Flows, ISSF 2012 - Iowa City, United States
Duration: 3 Jun 20126 Jun 2012
Conference number: 3

Conference

Conference3rd international Symposium on Shallow Flows, ISSF 2012
Abbreviated titleISSF
CountryUnited States
CityIowa City
Period3/06/126/06/12

Keywords

  • Multiphase beach dynamics
  • Breaking waves
  • Mathematical Hele-Shaw set-up

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