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Prediction of Resistance and Planing Attitude for Prismatic Planing Hull using OpenFOAM

OpenFOAM을 이용한 주형체 활주선의 저항 및 항주자세 추정

  • Shi, XiangYu (Department of Naval Architecture and Ocean Engineering, Kunsan National University) ;
  • Zhang, Yang (Department of Naval Architecture and Ocean Engineering, Kunsan National University) ;
  • Yum, Deuk-joon (Department of Naval Architecture and Ocean Engineering, Kunsan National University)
  • 쉬샹위 (국립군산대학교 조선해양공학과) ;
  • 장양 (국립군산대학교 조선해양공학과) ;
  • 염덕준 (국립군산대학교 조선해양공학과)
  • Received : 2019.07.26
  • Accepted : 2019.08.12
  • Published : 2019.08.31

Abstract

The prediction of the hydrodynamic performance of a planing hull vessel is an important and challenging topic for computational fluid dynamic (CFD) applications to naval hydrodynamics. In this paper, the resistance and planing attitude analysis for a Fridsma hull, which is a prismatic planing hull, in still water are numerically studied using OpenFOAM. OpenFOAM is an open source code package based on C++ libraries and the finite volume method (FVM) for the discretization of the RANS equation. The volume of fluid method (VOF) is used to capture the water-air interface and the SST ${\kappa}-{\omega}$ model is used for the turbulence simulation. The overset mesh method is used to capture the large motion of the hull at higher speeds. Before the extensive analysis, uncertainty analyses using various time steps and grid sizes were performed for one ship speed case of Fn = 1.19. The results of the present study are compared with those of a model test, other CFD research, and Savitsky's empirical formula. The results of the present study, following the trend of other CFD results, slightly over predict the resistance and under predict the sinkage and, more significantly, the trim.

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