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

한국해양공학회 (Korean Society of Ocean Engineers)
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점성유동 해석을 통한 Roll Damping 연구

A Study on Roll Damping by Numerical Analysis of Viscous Flow

  • 홍춘범 (삼성중공업(주) 조선해양연구소) ;
  • 부경태 (삼성중공업(주) 조선해양연구소) ;
  • 홍삼권 (삼성중공업(주) 조선해양연구소) ;
  • 이동연 (삼성중공업(주) 조선해양연구소)
  • HONG GJUN-BEOM (Marine Research Institute, Samsung Heavy Industries Co. Ltd) ;
  • BOO KYUNG-TAE (Marine Research Institute, Samsung Heavy Industries Co. Ltd) ;
  • HONG SAM-KWAN (Marine Research Institute, Samsung Heavy Industries Co. Ltd) ;
  • LEE DONG-YEON (Marine Research Institute, Samsung Heavy Industries Co. Ltd)
  • 발행 : 2004.11.01
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초록

A Numerical analysis method is developed in order to compute the flaw and wave field for 2-dimensional floating body in the free roll motion with 3 degrees of freedom. Navier-Stokes and continuity equations are gaverning equations in tire present study. Finite Difference method is introduced to discretize the governing equation. The free surface is traced by the interface tracking method and the grid system is fitted to boundaries including free surface and body surface, which is moving in the flow field. The numerical scheme is based on Maker and Cell method. For the sake of validation of the numerical method, the computed roll decay factors according to tire midship section shapes are compared with measured results. The numerical results are discussed in order to understand the effect of midship section shape on roll motion.

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