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VIV motion and drag amplification of two cylinders in cross flow with one placed in the wake of the other

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Abstract

Model tests were carried out to investigate vortex induced vibration of two elastically-supported rigid cylinders of dissimilar diameters in a water flume. The two cylinders are placed with one situated in the wake of the other. The spacing between the cylinders is about ten times the larger cylinder diameter. The Reynolds number is within the sub-critical range. The downstream cylinder exhibits VIV characteristics which are affected by wake shielding. Significant drag amplification is observed for both cylinders. Whilst it is possible to develop empirical models for the drag amplification of the upstream cylinder, the drag increase of the downstream cylinder due to the VIV response appears to be far more complex.

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Authors and Affiliations

  1. Joint Department of Naval Architecture and Marine Engineering, Universities of Glasgow and Strathclyde, 100 Montrose Street, Glasgow, G4 OLZ, UK

    Shan Huang

  2. Offshore Systems Team, BP Exploration, Chertsey Road, Sunbury on Thames, TW16 7LN, UK

    Andy Sworn

Authors
  1. Shan Huang
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  2. Andy Sworn
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Correspondence to Shan Huang.

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Huang, S., Sworn, A. VIV motion and drag amplification of two cylinders in cross flow with one placed in the wake of the other. Mar. Syst. Ocean Technol. 1, 121–126 (2005). https://doi.org/10.1007/BF03449203

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  • DOI: https://doi.org/10.1007/BF03449203

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