Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Numerical Analysis of Turning Performance in Waves by Considering Wave Drift Forces

파랑 표류력을 고려한 선박의 파랑 중 선회성능 해석

  • Seo, Min-Guk (Korea Research Institute of Ships & Ocean Engineering) ;
  • Nam, Bo Woo (Korea Research Institute of Ships & Ocean Engineering) ;
  • Kim, Yeongyu (Korea Research Institute of Ships & Ocean Engineering)
  • Received : 2017.11.10
  • Accepted : 2018.01.10
  • Published : 2018.04.20
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Abstract

This paper performs a numerical computation of ship maneuvering performance in waves. For this purpose, modular-type model (MMG (Mathematical Modeling Group) model) is adopted for maneuvering simulation and wave drift force is included in the equation of maneuvering motion. In order to compute wave drift force, two different seakeeping programs are used: AdFLOW based on Wave Green function method and SWAN based on Rankine panel method. When wave drift force is calculated using SWAN program, not only ship forward speed but also ship lateral speed are considered. By doing this, effects of lateral speed on wave drift force and maneuvering performance in waves are confirmed. The developed method is validated by comparing turning test results in regular waves with existing experimental data. Sensitivities of wave drift force on maneuvering performance are, also, checked.

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References

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