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

The Society of Naval Architects of Korea (대한조선학회)
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The Comparison of Flow Simulation Results around a KLNG Model Ship

KLNG선 모형 주위의 유동계산 비교

  • Kim, Byoung-Nam (Department of Naval Architecture & Marine Eng., Mokpo National University) ;
  • Kim, Wu-Joan (Department of Naval Architecture & Marine Eng., Mokpo National University) ;
  • Kim, Kwang-Soo (Maritime & Ocean Engineering Research Institute, KORDI) ;
  • Park, Il-Ryong (Maritime & Ocean Engineering Research Institute, KORDI)
  • 김병남 (목포대학교 공과대학 선박해양시스템) ;
  • 김우전 (목포대학교 공과대학 선박해양시스템) ;
  • 김광수 (한국해양연구원 해양시스템안전연구소) ;
  • 박일룡 (한국해양연구원 해양시스템안전연구소)
  • Published : 2009.06.20
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Abstract

Numerical simulations have been carried out for a 138K LNG Carrier (KLNG) model ship with free surface, using WAVIS 2.0 and Fluent 6.3.26 with various $y^+$ values and different grid densities. Level-set method for free surface capturing was adopted in WAVIS, while VOF has been used in Fluent. The calculated results were compared with the experiment data. Resistance coefficient, wave pattern, wave profile along the hull surface, axial velocity contours and transverse vectors had been analyzed. When the first $y^+$ value was fixed at 60, the simulation results from both WAVIS and Fluent were improved as the number of grids increased. The convergence time of WAVIS was much shorter than that of Fluent. Furthermore, WAVIS predicted the velocity field and the wave profile along the hull surface better than Fluent. However, Fluent gave better wave patterns.

Keywords

References

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