• 제목/요약/키워드: 감마-알이시타 천이 모델

검색결과 1건 처리시간 0.018초

층류-난류 천이 모델을 적용한 프로펠러 단독 성능 해석에 관한 CFD 시뮬레이션 (CFD Simulation on Predicting POW Performance Adopting Laminar-Turbulent Transient Model)

  • 김동현;전규목;박종천;신명수
    • 대한조선학회논문집
    • /
    • 제58권1호
    • /
    • pp.1-9
    • /
    • 2021
  • In the present study, the model-scale Propeller Open Water (POW) tests for the propeller of 176K bulk carrier and 8600TEU container ship were conducted through Computational Fluid Dynamics (CFD) simulation. In order to solve the incompressible viscous flow field, the Reynolds-averaged Navier-Stokes (RaNS) equations were employed as the governing equations. The γ-Reθ(gamma-Re-theta) transition model combined with the SST k-ωturbulence model was introduced to describe the laminar-turbulence transition considering the low Reynolds number of model-scale. Firstly, the flow simulation developing over a flat plate was performed to verify the transition modeling, in which the wall shear stresses were compared with experiments and other numerical results. Then, to investigate the effect of the model, the CFD simulation for the POW test was performed and the simulated propeller performance was validated through comparison with the experiment conducted at Korea Research Institute of Ships & Ocean Engineering (KRISO).