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Analysis of Marine Risers Subjected to Shoal/Deep Water in the Installation Process

Abstract

The dynamics of the installation process of marine risers subjected to shoal/deep seawater is studied. The riser is assumed to be a cantilevered Euler‒Bernoulli beam. The upper end of the riser is clamped on the vessel or the drilling platform. The lower end of the riser is connected to the Blowout Preventer Stack (BOPs) and Lower Marine Risers Package (LMRP). The lateral fluid forces induced by the sea wave and sea current are introduced into the governing equations of motion. The lateral displacement and stress distributions of the riser are obtained by solving the governing equation of the riser via Galerkin’s discretisation scheme and a fourth-order Runge‒Kutta algorithm. The results indicate that the riser exhibits different behaviours under various depths because of the different distributions of the flow velocity ranging from the sea surface to the seabed. In the case of shoal water, the dynamics of the riser are dominated by the sea wave, while in the case of deep water it is affected mainly by the sea current velocity and sea surface wind velocity.

Keywords:

sail catamaran, green shipping, zero emission, hybrid propulsion

Details

Issue
Vol. 29 No. 2 (2022)
Section
Latest Articles
Published
08-08-2022
DOI:
https://doi.org/10.2478/pomr-2022-0016
Licencja:
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Open Access License

This journal provides immediate open access to its content under the Creative Commons BY 4.0 license. Authors who publish with this journal retain all copyrights and agree to the terms of the CC BY 4.0 license.

 

Authors

  • Yikun Wang

    School of Mechanical Engineering, Hubei University of Arts and Science, China
  • Songxiang Luo

    School of Mechanical Engineering, Hubei University of Arts and Science, China
  • Mo Yang

    School of Mechanical Engineering, Hubei University of Arts and Science, China
  • Tao Qin

    School of Mechanical Engineering, Hubei University of Arts and Science, China
  • Jing Zhao

    School of Mechanical Engineering, Hubei University of Arts and Science, China
  • Gang Yu

    School of Mechanical Engineering, Hubei University of Arts and Science, China

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