Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Application of Rigid Lid Boundary Condition for Three Dimensional Flow Analysis beneath Floating Structure

부유체하부의 3차원 흐름해석을 위한 Rigid lid 경계조건의 적용

  • 홍남식 (동아대학교 토목공학과)
  • Received : 2012.08.06
  • Accepted : 2012.10.25
  • Published : 2012.10.31
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Abstract

In this paper, the rigid lid boundary condition is applied to simulate the influence of floating structures such as ships or pontoons, and the pressure term in both the momentum equations and continuity equation are modified. The pressure of a floating structure under the free surface is dependent on the draft of the structure, generally called a ship. If the free surface is covered by a floating structure, the free surface cannot move freely. The water level should be fixed, using a rigid lid boundary condition. This boundary condition is implemented by reducing the storage area of the grid cell with a factor between zero and one. The numerical model developed by Hong (2009) is verified through a comparison with experimental results, and the influence of the reduction factor is investigated using the verified numerical model.

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References

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