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

The Society of Naval Architects of Korea (대한조선학회)
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RANS Computation of Turbulent free Surface Flow around a Self Propelled KLNG Carrier

LNG 운반선의 자유수면을 포함한 자항상태 난류유동장의 수치해석

  • Kim, Jin (Maritime & Ocean Engineering Research Institute (MOERI)/KORDl) ;
  • Park, Il-Ryong (Maritime & Ocean Engineering Research Institute (MOERI)/KORDl) ;
  • Kim, Kwang-Soo (Maritime & Ocean Engineering Research Institute (MOERI)/KORDl) ;
  • Van, Suak-Ho (Maritime & Ocean Engineering Research Institute (MOERI)/KORDl)
  • 김진 (한국해양연구원 해양시스템안전연구소) ;
  • 박일룡 (한국해양연구원 해양시스템안전연구소) ;
  • 김광수 (한국해양연구원 해양시스템안전연구소) ;
  • 반석호 (한국해양연구원 해양시스템안전연구소)
  • Published : 2005.12.01
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Abstract

The turbulent free surface flow around a self-propelled KRISO 138K LNG Carrier is numerically simulated using the finite volume based multi-block RANS code, WAVIS developed at HRISO. The realizable k-$\varepsilon$ turbulence model with a wail function is employed for the turbulence closure. The free surface is captured with the Level-Set method and body forces are used to model the effects of a propeller without resolving the detail blade flow. In order to obtain an accurate free surface solution and stable convergence, the computations are executed with a proper fine grid refinement around the free surface and with an adoption of implicit discretization scheme for the Level-Set formulation. The computed velocity vectors at the several stations and wave patterns show a good agreement with the experimental results measured at the KRISO towing tank.

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References

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