Role of the vertical pressure gradient in wave boundary layers

Karsten Lindegård Jensen, B. Mutlu Sumer, Giovanna Vittori, Paolo Blondeaux

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Abstract

By direct numerical simulation (DNS) of the flow in an oscillatory boundary layer, it is possible to obtain the pressure field. From the latter, the vertical pressure gradient is determined. Turbulent spots are detected by a criterion involving the vertical pressure gradient. The vertical pressure gradient is also treated as any other turbulence quantity like velocity fluctuations and statistical properties of the vertical pressure gradient are calculated from the DNS data. The presence of a vertical pressure gradient in the near bed region has significant implications for sediment transport.
Original languageEnglish
Title of host publicationProceedings of the 34th International Conference on Coastal Engineering
Number of pages13
PublisherICCE2014 Secretariat
Publication date2014
Publication statusPublished - 2014
Event34th International Conference on Coastal Engineering - Seoul, Korea, Republic of
Duration: 15 Jun 201420 Jun 2014
Conference number: 34
http://icce2014.com/home/

Conference

Conference34th International Conference on Coastal Engineering
Number34
Country/TerritoryKorea, Republic of
CitySeoul
Period15/06/201420/06/2014
Internet address

Keywords

  • Wave boundary layers
  • Turbulence
  • Vertical pressure gradient
  • DNS
  • Transition to turbulence

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