Nonlinear wave surface elevation around array of truncated cylinders

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

With the expansion of offshore development, the application of multi-columns offshore platforms has become more widespread. The slamming on the deck of the platform becomes one of the critical issues relevant to the air gap design. In the present study, a number of factors influencing the surface elevation around array of truncated cylinders are investigated. The influence of the distance between cylinders, wave directions, scatter parameter and wave steepness are examined. Based on the potential theory, the first-order and the second-order surface elevation are calculated, and the nonlinear characteristics of surface elevation around cylinders is discussed. Further investigation of the detailed components of surface elevation revealed that not only the first-order but also the second-order surface elevation component is significant for some particular incident wave frequencies. The near-trapping phenomenon observed from the numerical simulation further demonstrated that the second-order surface elevation is dominated by the strong near-trapping phenomenon of the surface elevation.

Original languageEnglish
Title of host publication30th International Ocean and Polar Engineering Conference
Place of PublicationCupertino, California
Number of pages5
ISBN (Electronic)9781880653845
Publication statusPublished - 11 Oct 2020
Event30th International Ocean and Polar Engineering Conference, ISOPE 2020 - Virtual, Online, China
Duration: 11 Oct 202016 Oct 2020

Conference

Conference30th International Ocean and Polar Engineering Conference, ISOPE 2020
Country/TerritoryChina
CityVirtual, Online
Period11/10/2016/10/20

Keywords

  • truncated cylinder
  • velocity potential
  • incident wave frequency
  • subsea system
  • different leg space

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