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

The Society of Naval Architects of Korea (대한조선학회)
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Unsteady RANS Analysis of the Hydrodynamic Response for a Ship with Forward Speed in Regular Wave

규칙파중 전진하는 선박의 유체역학적 응답에 대한 비정상 수치해석

  • Park, Il-Ryong (Maritime and Ocean Engineering Research Institute, KORDI) ;
  • Kim, Kwang-Soo (Maritime and Ocean Engineering Research Institute, KORDI) ;
  • Kim, Jin (Maritime and Ocean Engineering Research Institute, KORDI) ;
  • Van, Suak-Ho (Maritime and Ocean Engineering Research Institute, KORDI)
  • 박일룡 (한국해양연구원 해양시스템안전연구소) ;
  • 김광수 (한국해양연구원 해양시스템안전연구소) ;
  • 김진 (한국해양연구원 해양시스템안전연구소) ;
  • 반석호 (한국해양연구원 해양시스템안전연구소)
  • Published : 2008.02.29
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Abstract

The present paper provides a CFD analysis of diffraction problem for a ship with forward speed using an unsteady RANS simulation method, a WAVIS code. The WAVIS viscous solver adopting a finite volume method has second order accuracy in time and field discretizaions for the RANS equations. A two phase level-set method and a realizable ${\kappa}-{\varepsilon}$ turbulence model are adopted to compute the free surface and to meet the turbulence closure, respectively. To validate the capability of the present numerical methods for the simulation of an unsteady progressive regular wave, computations are performed for three grid sets with refinement ratio of ${\sqrt{2}}$. The main simulation is performed for a DTMB5512 model with a forward speed in a regular head sea condition. Validation of the present numerical method is carried out by comparing the present CFD results with available unsteady experimental data published in the 2005 Tokyo CFD Workshop: resistance, heave force, pitch moment, unsteady free surface elevations and velocity fields.

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References

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