DOI QR코드

DOI QR Code

Numerical Investigation of Anti-Diffusion Source Term for Free-Surface Wave Flow

  • Park, Sunho (Dept. of Ocean Engineering, Korea Maritime and Ocean University) ;
  • Lee, Heebum (Research Institute of Marine Systems Engineering, Dept. of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Rhee, Shin Hyung (Research Institute of Marine Systems Engineering, Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
  • 투고 : 2016.04.07
  • 심사 : 2016.06.13
  • 발행 : 2016.06.30

초록

Accurate simulation of free-surface wave flows around a ship is very important for better hull-form design. In this paper, a computational fluid dynamics (CFD) code which is based on the open source libraries, OpenFOAM, was developed to predict the wave patterns around a ship. Additional anti-diffusion source term for minimizing a numerical diffusion, which was caused by convection differencing scheme, was considered in the volume-fraction transport equation. The influence of the anti-diffusion source term was tested by applying it to free-surface wave flow around the Wigley and KCS model ships. In results, the wave patterns and hull wave profiles of the Wigley and KCS model ships for various anti-diffusion coefficients showed quite close patterns. While, the band width of the water volume-fraction values between 0.1 to 0.9 at the Wigley and KCS model hull surfaces was narrowed by considering the anti-diffusion term. From the results, anti-diffusion source term decreased free-surface smearing.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea

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피인용 문헌

  1. Effect of wave periods on added resistance and motions of a ship in head sea simulations vol.137, 2017, https://doi.org/10.1016/j.oceaneng.2017.04.009