Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Time-Domain Analysis of Nonlinear Wave-Making Problems by a Submerged Sphere Oscillating with Large Amplitude

대진폭 조화 운동을 하는 잠수구에 의한 비선형 조파문제의 시간영역 해석

  • Kim, Yong-Jig (Dept. of Naval Architecture and Marine Systems Engineering, Pukyong National University) ;
  • Ha, Young-Rok (Research Center for Ocean Industrial Development, Pukyong National University)
  • 김용직 (부경대학교 조선해양시스템공학과) ;
  • 하영록 (부경대학교 해양산업개발연구소)
  • Published : 2006.12.30
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Abstract

A high-order spectral/boundary-element method is newly adapted as an efficient numerical tool. This method is one of the most efficient numerical methods by which the nonlinear gravity waves can be simulated and hydrodynamic forces also can be calculated in time-domain. In this method, the velocity potential is expressed as the sum of surface potential and body potential. Then, surface potential is solved by using the high-order spectral method and body potential is solved by using the high-order boundary element method. By the combination of these two methods, the wave-making problems by a submerged sphere oscillating with large amplitude under the free~surface are solved in time-domain. Through the example calculations, nonlinear effects on free-surface profiles and hydrodynamic forces are shown and discussed.

Keywords

References

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