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Linear and nonlinear irregular waves and forces in a numerical wave tank |
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| Authors: | S. Y. Boo |
| Affiliation: | 1. Department of Engineering Science and Ocean Engineering, National Taiwan University, Taipei, Taiwan;2. Hydrotech Research Institute, National Taiwan University, Taipei, Taiwan;1. School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China;2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai 200240, China;3. Hubei Key Laboratory of Naval Architecture & Ocean Engineering Hydrodynamics, Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, China |
| Abstract: | A time-domain higher-order boundary element scheme was utilized to simulate the linear and nonlinear irregular waves and diffractions due to a structure. Upon the second-order irregular waves with four Airy wave components being fed through the inflow boundary, the fully nonlinear boundary problem was solved in a time-marching scheme. The open boundary was modeled by combining an absorbing beach and the stretching technique. The proposed numerical scheme was verified by simulating the linear regular and irregular waves. The scheme was further applied to compute the linear and nonlinear irregular wave diffraction forces acting on a vertical truncated circular cylinder. The nonlinear results were also verified by checking the accuracy of the nonlinear simulation. |
| Keywords: | Irregular waves Numerical wave tank Higher order boundary element method Open boundary modeling |
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