CFD simulations of vertical ship motions in shallow water

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Abstract

The seakeeping behaviour of a vessel in shallow water differs significantly from its behaviour in deep water. In shallow water, a vessel’s motion responses to incident waves will be affected by hydrodynamic effects caused by the presence of a finite depth. Given that a vessel will sail in shallow water at various times during its service life, such as when entering harbours, it is important to have an understanding of the influence of shallow water on ship motions. In this study, using a commercial unsteady Reynolds-Averaged Navier-Stokes solver, a numerical study of ship motions in shallow water was carried out. Firstly, the characteristics of shallow water waves were investigated by conducting a series of simulations. Then, a full-scale large tanker model was used as a case study to predict its heave and pitch responses to head waves at various water depths, covering a range of wave frequencies at zero speed. The motion results obtained were validated against related experimental studies available in the literature, and were also compared to those from 3-D potential theory. The results were found to be in good agreement with the experimental data. Finally, it was shown that vertical motions were significantly affected by shallow water.
Original languageEnglish
Number of pages10
Publication statusPublished - 16 Jul 2016
EventInternational Conference on Maritime Technology 2016 - Harbin, China
Duration: 16 Jul 201618 Jul 2016
Conference number: 2016

Conference

ConferenceInternational Conference on Maritime Technology 2016
Abbreviated titleICMT
CountryChina
CityHarbin
Period16/07/1618/07/16

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Keywords

  • seakeeping
  • computational fluid dynamics
  • CFD
  • RANS solver
  • shallow water
  • ship motions
  • VLCC
  • very large crude carriers

Cite this

Tezdogan, T., & Incecik, A. (2016). CFD simulations of vertical ship motions in shallow water. Paper presented at International Conference on Maritime Technology 2016, Harbin, China.