Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Radiation Problem Involving Two-layer Fluid in Frequency-Domain Numerical Wave Tank Using Artificial Damping Scheme

주파수 영역에서 인공감쇠기법을 활용한 복층 유체의 수치조파수조 방사 문제

  • Min, Eun-Hong (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Koo, Weoncheol (Department of Naval Architecture and Ocean Engineering, Inha University)
  • 민은홍 (인하대학교 조선해양공학과) ;
  • 구원철 (인하대학교 조선해양공학과)
  • Received : 2016.06.22
  • Accepted : 2016.12.16
  • Published : 2017.02.28
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Abstract

There are two wave modes induced by an oscillating body on the free surface of a two-layer fluid: the barotropic and baroclinic modes. To investigate the generated waves composed of two modes, a radiation problem involving a heaving rectangular body was solved in a numerical wave tank. A new artificial damping zone scheme was developed and applied in the frequency-domain analysis. The performance of this damping scheme was compared with given radiation boundary conditions for various conditions. The added mass and radiation damping coefficients for the heaving rectangular body were also calculated for various fluid-density ratios.

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References

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