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      Suppression of Vortex-Induced Vibration by Fairings on Marine Risers

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          Abstract

          Vortex-induced vibration is quite common during the operation of offshore risers or umbilical cables, commonly leading to serious damage to risers and reduced service life. Vortex-induced vibration of the offshore risers could be effectively suppressed by fairing devices. In this paper, a newly developed vortex-induced vibration fairing and large eddy simulation model of the FLUENT software were used for numerical analysis, experimental research and stimulating vortex-induced vibration at 0.1–2 m s –1. The data of the numerical model with fairing was compared and analyzed to study the vortex shedding frequency at different Reynolds numbers and changes in drag and lift coefficients. The displacement state of 12 in risers with and without fairing was experimentally tested using a five degree-of-freedom balance. The vortex-induced vibration effect of the fairing was tested at different velocities. The result shows the drag reduction effect of the fairing is more obvious when the flow velocity is 0.4–1.2 m s –1 and the maximum drag reduction reaches 55.6% when the flow velocity is 0.6 m s –1. Additionally, the drag reduction effect was obvious when the flow velocity was greater than 1.3 m s –1 and less than 0.3. The result indicates that the developed 12 in fairing, with good potential in engineering applications, has good vortex-induced vibration-suppression effects.

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          Author and article information

          Journal
          JOUC
          Journal of Ocean University of China
          Science Press and Springer (China )
          1672-5182
          24 January 2020
          01 April 2020
          : 19
          : 2
          : 298-306
          Affiliations
          1Department of Mechanical and Electronic Engineering, China University of Petroleum (Huadong), Qingdao 266100, China
          2Research Institute of Petroleum Exploration & Development, Beijing 100080, China
          3Qingdao DMAR Engineering Inc., Qingdao 266100, China
          4Department of Offshore Oil and Gas Engineering, College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710000, China
          Author notes
          *Corresponding author: KANG Yongtian, E-mail: kyt@ 123456dmar.cn
          Article
          s11802-020-4033-0
          10.1007/s11802-020-4033-0
          Copyright © Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2020.

          The copyright to this article, including any graphic elements therein (e.g. illustrations, charts, moving images), is hereby assigned for good and valuable consideration to the editorial office of Journal of Ocean University of China, Science Press and Springer effective if and when the article is accepted for publication and to the extent assignable if assignability is restricted for by applicable law or regulations (e.g. for U.S. government or crown employees).

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          Self URI (journal-page): https://www.springer.com/journal/11802

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