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논문

부유체하부의 3차원 흐름해석을 위한 Rigid lid 경계조건의 적용

Application of Rigid Lid Boundary Condition for Three Dimensional Flow Analysis beneath Floating Structure

홍남식
한국해양공학회 (The Korean Society of Ocean Engineers (KSOE))|2012.10|한국해양공학회지 (Journal of Ocean Engineering and Technology)|제26권 제5호|pp. 55-62

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참고문헌

키워드

부유체자유수면좌표계Rigid lid 경계조건압축계수국부압력
주제분류해양공학

초록

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.

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.

참고문헌 (22)

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