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

  • 제51권1호
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  • Pages.67-77
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  • 2014
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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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선박의 저항성능 추정을 위한 EARSM 난류 모형의 활용

Numerical Prediction of Ship Hydrodynamic Performances using Explicit Algebraic Reynolds Stress Turbulence Model

  • 김유철 (한국해양과학기술원, 선박해양플랜트연구소) ;
  • 김광수 (한국해양과학기술원, 선박해양플랜트연구소) ;
  • 김진 (한국해양과학기술원, 선박해양플랜트연구소)
  • Kim, Yoo-Chul (Korea Research Institute of Ships and Ocean Engineering (KRISO), Korea Institute of Ocean Science & Technology (KIOST)) ;
  • Kim, Kwang-Soo (Korea Research Institute of Ships and Ocean Engineering (KRISO), Korea Institute of Ocean Science & Technology (KIOST)) ;
  • Kim, Jin (Korea Research Institute of Ships and Ocean Engineering (KRISO), Korea Institute of Ocean Science & Technology (KIOST))
  • 투고 : 2013.11.07
  • 심사 : 2014.01.08
  • 발행 : 2014.02.20
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초록

In this study, Explicit Algebraic Reynolds Stress Model (EARSM) which is based on the existing ${\kappa}-{\omega}$ model has been applied to the flow field analysis around ship hulls. Existing transport equations for the turbulent kinetic energy and the dissipation rate are used in almost the same form and anisotropy terms of Reynolds stresses are newly considered. The well-known KVLCC2 and KCS hull forms are selected as validation cases, which were also used in 2010 Workshop on CFD in Ship Hydrodynamics. In case of KVLCC2 double model, comparison of mean velocity distribution, turbulent kinetic energy, and Reynolds stresses near the propeller plane has been carried out and wave elevation and wave profiles have been additionally studied for KCS and KVLCC2 with free surface models. Some improved results for mean velocity distribution at the propeller plane have been obtained while there is little change in free surface wave profiles.

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참고문헌

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