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제안 방법
- Numerical computations were performed via two different methods, the MAC method and Marker-density method. Experiments were also carried out in the ship model basin at Inha University to confirm and compensate for the numerical approaches. Simulations were performed numerically to comprehend overall patterns of wave breaking by comparing the results obtained from the aforementioned two methods.
- Experiments were also carried out in the ship model basin at Inha University to confirm and compensate for the numerical approaches. Simulations were performed numerically to comprehend overall patterns of wave breaking by comparing the results obtained from the aforementioned two methods. The respective strengths and weaknesses of both methods are also discussed.
- The purpose of the present research is to estimate and compare different methods and choose the most suitable scheme among them with re옹pect to investigating a free surface and related phenomena. The generation of wave breaking is also studied, and we attempt to predict the occurrence of this phenomenon near a ship bow at different ship speeds.
대상 데이터
- The numerical simulations are performed using the Marker-density method and Marker and Cell Method. The experimental simulations are carried out in the ship model towing tank at Inha University. Both numerical and experimental simulations are performed using the same data and parameters, as much as possible, such as ship speed, cell size, mesh type, etc.
- The respective strengths and weaknesses of both methods are also discussed. The two ship models used in the experiments have wedge-shaped bows, transom stems, and simple aft bodies with a rectangular transverse section. The present research fbcuseg on the free surface regions around ship bows, where most significant wave generation and breaking occur.
이론/모형
- In 1985Mori, investigated similar wave breakings generated by a ship on an irregular wavy free surface. In this research, the breaking of bow waves is investigated using numerical computations and simulation techniques.
- This Marker-Density technique, integrating the strengths of the MAC and VOF methods, was used by Miyata in investigating breaking waves at a free surfece as an alternative to the MAC method to overcome complex mechanisms involved in free surface phenomena. The LS (Level Set) method was first introduced by Osher & Sethian in 1988 as an Eulerian inter face tracking methods, in which the interfaces are tracked because the zero level set is found explicitly as a part of numerical computations. Surface tension can be easily included in this scheme as well as the momentum and continuity equations.
- experimental simulations. The numerical simulations are performed using the Marker-density method and Marker and Cell Method. The experimental simulations are carried out in the ship model towing tank at Inha University.
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