Simulations of Fully Nonlinear Flow Field with Incident Waves for Arbitrary 3-D Floating Bodies

• Main Authors: Yen-Mi Lin, 林言彌
• Other Authors: Tzung-Hang Lee
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/66551474723094108226

碩士 === 淡江大學 === 機械工程學系 === 90 === The DELTA Method (The Desingularized Eulerian-Lagrangian Time-domain Approach method) is used in the numerical model to simulate the waves generated by ships. The DELTA Method reduces the complexities of the program and short the computation time because all the singularities are placed out of the computational domain. A 2-D wave maker is used to generate three kind of incoming waves with different wave height to simulate the real sea conditions. In this thesis, The DELTA Method has proved itself to be a stable numerical method and have the strong ability in simulating ships sailing in arbitrary sea conditions. 2-D wave is produced and extended into 3-D wave, and then, introduced into the computational domain. The numerical model of the DELTA Method is applied to simulate the conditions of ships sailing in the real sea conditions. The numerical results are then compared with the experimental results. The comparisons show that The DELTA Method is stable and reliable.