Lift of a rotating circular cylinder in unsteady flows

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

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A cylinder rotating in steady current experiences a lift known as the Magnus effect. In the present study the effect of waves on the Magnus effect has been investigated. This situation is experienced with the novel floating offshore vertical axis wind turbine (VAWT) concept called the DEEPWIND concept, which incorporates a rotating spar buoy and thereby utilizes seawater as a roller-bearing. The a priori assumption and the results suggest that the lift in waves, to a first approximation, may be represented by a formulation similar to the well-known Morison formulation. The force coefficients are experimentally found to primarily depend on the ratio between the surface speed of the cylinder and the outer flow velocity. Copyright © 2012 by the International Society of Offshore and Polar Engineers (ISOPE).
Original languageEnglish
Title of host publicationProceedings of the International Offshore and Polar Engineering Conference 2012
PublisherInternational Society of Offshore & Polar Engineers
Publication date2012
Pages388-395
ISBN (print)9781880653944
StatePublished

Conference

Conference22nd International Offshore and Polar Engineering Conference
CountryGreece
CityRhodes
Period17/07/1221/07/12
Internet addresshttp://www.isope.org

Keywords

  • Circular cylinders, Lift, Rotors, Seawater, Spar platforms, Wind turbines, Aerodynamics, DEEPWIND concept, Floating vertical axis wind turbine, Magnus effect, Rotating cylinder, Waves, Force coefficients, Rotating circular cylinders, Rotating cylinders, Steady current, Surface speed, Vertical axis wind turbines
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