| Second-Order Wave Diffraction Around 3-D Bodies by A Time-Domain Method |
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| 作者姓名： | BAI Wei |
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| 作者单位： | The Slate Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，The Slate Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology Dalian 116024，China，Dalian 116024，China |
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| 摘 要： | A time-domain method is applied to simulate nonlinear wave diffraction around a surface piercing 3-D arbitrary body. The method involves the application of Taylor series expansions and the use of perturbation procedure to establish the corresponding boundary value problems with respect to a time-independent fluid domain. A boundary element method based on B-spline expansion is used to calculate the wave field at each time step, and the free surface boundary condition is satisfied to the second order of wave steepness by a numerical integration in time. An artificial damping layer is adopted on the free surface for the removal of wave reflection from the outer boundary. As an illustration, the method is used to compute the second-order wave forces and run-up on a surface-piercing circular cylinder. The present method is found to be accurate, computationally efficient, and numerically stable.
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Second-Order Wave Diffraction Around 3-D Bodies by A Time-Domain Method |
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| BAI Wei and TENG BinThe Slate Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian ,China.Second-Order Wave Diffraction Around 3-D Bodies by A Time-Domain Method[J].China Ocean Engineering,2001(1):73-84. |
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| Authors: | BAI Wei and TENG BinThe Slate Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian China |
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| Institution: | The State Key Laboratory ofCoastal and Of fshore Engineering, Dalian University ofTechnology, Dalian 116024, China The State Key Laboratory ofCoastal and Of fshore Engineering, Dalian University ofTechnology, Dalian 116024, China |
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| Abstract: | A time-domain method is applied to simulate nonlinear wave diffraction around a surface piercing 3-D arbitrary body. The method involves the application of Taylor series expansions and the use of perturbation procedure to establish the corresponding boundary value problems with respect to a time-independent fluid domain. A boundary element method based on B-spline expansion is used to calculate the wave field at each time step, and the free surface boundary condition is satisfied to the second order of wave steepness by a numerical integration in time. An artificial damping layer is adopted on the free surface for the removal of wave reflection from the outer boundary. As an illustration, the method is used to compute the second-order wave forces and run-up on a surface-piercing circular cylinder. The present method is found to be accurate, computationally efficient, and numerically stable. |
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| Keywords: | time-domain method boundary element method wave forces |
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