Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Numerical Analysis of Hydrodynamic Forces on a Floating Body in Two-layer Fluids

밀도가 상이한 두 유체층에서 부유체 동유체력 특성의 수치적 해석

  • Kim, Mi-Geun (School of Naval Architecture and Ocean Engineering University of Ulsan) ;
  • Koo, Weon-Cheol (School of Naval Architecture and Ocean Engineering University of Ulsan)
  • 김미근 (울산대학교 조선해양공학부) ;
  • 구원철 (울산대학교 조선해양공학부)
  • Received : 2010.02.22
  • Accepted : 2010.04.26
  • Published : 2010.06.20
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Abstract

In this study, a radiation and a diffraction problems of a floating body in two-layer fluids were solved by the Numerical Wave Tank(NWT) technique in the frequency domain. In two-layer fluids, two different wave modes exist and the hydrodynamic coefficients can be obtained separately for each mode. The two-domain Boundary Element Method(BEM) in the potential fluid using the whole-domain matrix scheme was used to investigate the characteristics of wave forces, added mass and damping coefficients. The effects of the ratio of density and water depth in the lower domain were also evaluated and compared with given references.

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References

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