Flow between a plane wall and an oscillating circular cylinder in still water at low KC and Reynolds number

J. G. Tom, S. Draper

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The flow field that results between a plane wall and a normally oscillating cylinder is explored through a series of particle image velocimetry (PIV) experiments. Sinusoidal cylinder motion is considered for Keulegan Carpenter (KC) numbers between 1 – 10 and Reynolds numbers (Re) less than 5000 (holding β=Re/KC constant). A constant minimum gap ratio between the cylinder and wall equal to 0.125 is adopted for all experiments. For sufficiently small KC and Re, the measured flow velocities beneath the cylinder show good comparison with both analytical predictions based on continuity arguments and on potential flow theory. At larger KC number asymmetry results, which is not captured in the analytical predictions. Over the full parameter space the results are used to explore the relationship between the motion of the cylinder and the flow velocity near the wall. It is believed that this relationship is important for quantifying the sediment transport beneath offshore infrastructure such as riser pipelines and mooring line chains, which oscillate normal to the seabed.

Original languageEnglish (US)
Title of host publicationProceedings of the 20th Australasian Fluid Mechanics Conference, AFMC 2006
PublisherAustralasian Fluid Mechanics Society
ISBN (Electronic)9781740523776
StatePublished - Jan 1 2016
Externally publishedYes
Event20th Australasian Fluid Mechanics Conference, AFMC 2006 - Perth, Australia
Duration: Dec 5 2016Dec 8 2016

Publication series

NameProceedings of the 20th Australasian Fluid Mechanics Conference, AFMC 2016

Conference

Conference20th Australasian Fluid Mechanics Conference, AFMC 2006
Country/TerritoryAustralia
CityPerth
Period12/5/1612/8/16

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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