Numerical study of the influence of fishnet mesh size on a floating platform

Hung Jie Tang, Chai Cheng Huang, Ray Yeng Yang

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

This study aims to investigate the influence of fishnet mesh size on a floating platform. A self-developed, time-domain numerical model was used for the evaluation. This model is based on potential flow theory, uses the boundary element method (BEM) to solve nonlinear wave-body interactions, and applies the Morison equation to calculate the hydrodynamic forces exerted on fishnets. The mooring system is treated as a linear and symmetric spring. The results near the resonant frequency of the platform indicate that the smaller the fishnet mesh size, the lower the heave, pitch, and sea-side tension response amplitude operators (RAOs), but the higher the reflection coefficient. The results in the lower frequency region reveal that the smaller the fishnet mesh size, the lower the surge and heave RAOs, but the higher the pitch and tension RAOs. Meanwhile, the time-domain results at the resonant frequency of heave motion are shown to indicate the influences of a platform with various fishnets mesh sizes on the rigid body motion, mooring line tension, and transmitted wave heights. In addition, a comparison of nonlinear effects indicates that, after reducing the fishnet mesh size, the second-order RAOs of heave, pitch, and sea-side tension decrease, but the changes are minor against the first-order results.

原文English
文章編號343
期刊Journal of Marine Science and Engineering
8
發行號5
DOIs
出版狀態Published - 2020 五月 1

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 水科學與技術
  • 海洋工程

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