Proceedings of the Korea Committee for Ocean Resources and Engineering Conference (한국해양공학회:학술대회논문집)

Korean Society of Ocean Engineers (한국해양공학회)
권호 표지

Large-Eddy Simulation of Turbulent Channel Flow using a Viscous Numerical Wave Tank Simulation Technique

점성 수치파랑수조 구축을 위한 LES 기술의 평판간 난류유동에의 적용

  • Park, Jong-Chun (Department of Navel Architecture and Ocean Engineering, Pusan National University) ;
  • Kang, Dae-Hwan (Department of Navel Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Bang-Eun (Department of Navel Architecture and Ocean Engineering, Pusan National University) ;
  • Yoon, Hyeon-Sik (Department of Navel Architecture and Ocean Engineering, Pusan National University) ;
  • Chun, Ho-Hwan (Department of Navel Architecture and Ocean Engineering, Pusan National University)
  • 박종천 (부산대학교 조선해양공학과) ;
  • 강대환 (부산대학교 조선해양공학과) ;
  • 김방은 (부산대학교 조선해양공학과) ;
  • 윤현식 (부산대학교 조선해양공학과) ;
  • 전호환 (부산대학교 조선해양공학과)
  • Published : 2003.10.24
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Abstract

As the first step to investigate the nonlinear interactions between turbulence and marine structures inside a viscous NWT, a LES technique was applied to the turbulent channel flow for $Re_{T}=150$, in this paper. The employed models were 4 types, such as the Smagorinsky model, the Dynamic SGS model, the Structure Function model and the Generalized Normal Stress model. The simulated data in time-series for the LESs were averaged in both time and space and performed statistical analysis. And results of the LESs were compared with those of a DNS developed in the present study and two spectral methods by Yoon et al.(2003) & Kim et al.(1987). It seems to be quite difficult to evaluate their performances to the present problem, but is seen that the accuracy of LESs are still related to the number of grids(or fine grid size).

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