Particle motions in oscillatory flow over a smooth bed

Karsten Lindegård Jensen, B. Mutlu Sumer, Jørgen Fredsøe, Jacob Hjelmager Jensen

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Abstract

This study investigates particle motions near the bed in an oscillating tunnel with a smooth bed. Trajectories of a heavy particle were recorded in two dimensions (horizontal and vertical) and in time. The wave boundary layer Reynolds number is Re = 520000. Kinematical quantities such as the probability distribution of particle position in the vertical, and the horizontal and vertical particle velocities, among others, are determined. The particle is observed to reach heights of 2.5-3d, similar to that characterizing a typical bedload particle in sediment transport.
Original languageEnglish
Title of host publicationBook of Proceedings
Number of pages10
PublisherIAHR
Publication date2014
Publication statusPublished - 2014
Event3rd IAHR Europe Congress - Porto, Portugal
Duration: 14 Apr 201416 Apr 2014
Conference number: 3

Conference

Conference3rd IAHR Europe Congress
Number3
CountryPortugal
CityPorto
Period14/04/201416/04/2014

Keywords

  • Oscillatory flow
  • Particle tracking
  • Sediment transport
  • single particle turbulence

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