【摘要】 设入射波为Stokes二阶波,对垂直平面二维问题,给出了二阶散射波的远场渐近解和辐射边界条件。用有限元——有限距离辐射边界法,设计了适用于大型潜体非线性波浪力计算的通用程序“NWF₂”,计算了海底半圆柱上的非线性波浪力。更多还原

【Abstract】 In this paper, we first develop the far field asymptotic solutions of the second-order scattering waves for vertical plan problem under the assumption of the second-order Stokes wave as the incident wave. The asymptotic solutions satisfy the Laplace’s equation, the sea bed and free surface boundary conditions and are the out-going waves. Then the radiation conditions of the second-order scattering waves are derived by using the asymptotic solutions.By using the two-dimensional finite element method with the radiation conditions imposed on the artificial boundaries, the computer program, known as "NWF2", for determining nonlinear wave forces on large submerged bodies has been written. As a numerical example,nonlinear wave forecs on a half circular cylinder on sea bed are presented.更多还原