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

  • 제46권3호
  • /
  • Pages.219-231
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  • 2009
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  • 1225-1143(pISSN)
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  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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KLNG선 모형 주위의 유동계산 비교

The Comparison of Flow Simulation Results around a KLNG Model Ship

  • 김병남 (목포대학교 공과대학 선박해양시스템) ;
  • 김우전 (목포대학교 공과대학 선박해양시스템) ;
  • 김광수 (한국해양연구원 해양시스템안전연구소) ;
  • 박일룡 (한국해양연구원 해양시스템안전연구소)
  • 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)
  • 발행 : 2009.06.20
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초록

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.

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참고문헌

  1. Kim, B.J., Choi, S.H., Kim, H.T. and Van, S.H., 2005a, 'Measurement of Velocity Field Change around Stern of LNG Carrier Double Body Model by Propeller,' Journal of the Society of Naval Architects of Korea, Vol. 42, No. 5, pp. 448-457 https://doi.org/10.3744/SNAK.2005.42.5.448
  2. Kim, J., Park, I.R, Kim, K.S. and Van, S.H., 2005b, 'RANS Computation of Turbulent Free Surface Flow around a Self Propelled KLNG Carrier,' Journal of the Society of Naval Architects of Korea, Vol. 42, No. 6, pp. 583-590 https://doi.org/10.3744/SNAK.2005.42.6.583
  3. Kim, H.T. and Kim, H.T., 2006, 'Research of Elements Giving Effects on the Numerical Analysis for the LNG Carrier,' Journal of the Society of Naval Architects of Korea, Vol. 43, No. 6, pp. 656-666 https://doi.org/10.3744/SNAK.2006.43.6.656
  4. Rhee, S.H. and Skinner, C., 2005, 'Unstructured Grid Based Navier-Stokes Sover for Free-Surface Flow around Surface Ships,' Proc. of CFD Workshop Tokyo 2005, pp. 474-479
  5. Van, S.H., Yoon, H.S., Lee, Y.Y., Park, I.R., Lee, C.J. and Kim, J.W., 2003, 'Measurement of Flow around KRISO 138K LNG Carrier Model,' Journal of the Society of Naval Architects of Korea, Vol. 40, No. 2, pp. 1-10 https://doi.org/10.3744/SNAK.2003.40.2.001
  6. Van, S.H., Kim, W.J., Yoon, H.S. and Lee, Y.Y., 2006, 'Flow measurement around a model ship with propeller and rudder,' Experiments in Fluids, Vo. 40, pp. 533-545 https://doi.org/10.1007/s00348-005-0093-6

피인용 문헌

  1. The Design Optimization of a Flow Control Fin Using CFD vol.49, pp.2, 2012, https://doi.org/10.3744/SNAK.2012.49.2.174
  2. Effect of Grid, Turbulence Modeling and Discretization on the Solution of CFD vol.20, pp.4, 2014, https://doi.org/10.7837/kosomes.2014.20.4.419