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

Joe Gain Tom, Scott Draper

Research output: Chapter in Book/Conference paperConference paperpeer-review


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
Title of host publicationProceedings of the 20th Australasian Fluid Mechanics Conference
EditorsGreg Ivey, Nicole Jones, Tongming Zhou
Place of PublicationAustralia
PublisherAustralasian Fluid Mechanics Society
Number of pages4
ISBN (Print)9781740523776
Publication statusPublished - Dec 2016
Event20th Australasian Fluid Mechanics Conference - University of Western Australia, Perth, Australia
Duration: 5 Dec 20168 Dec 2016
Conference number: 20


Conference20th Australasian Fluid Mechanics Conference
Abbreviated titleAFMC
Internet address


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