二维浮体大幅运动水动力物面非线性时域解

Nonlinear time-domain solution of hydrodynamic forces ona 2-D floating body undergoing large amplitude motions

基于时域自由面格林函数，建立了线性自由面条件下计及物体大幅运动瞬时湿表面条件的非线性水动力理论计算模型重点研究了时域分布源在水线上的特性，指出了传统分布源法在处理浮体与自由面外张斜交时计算失败的原因，并提出了新的时域分布源数值计算模型。

Based on the time-domain free surface Green function source distribution method,the problem of nonlinear hydrodynamic forces on a 2-D floating body with large amplitude motions is solved.In this approach,the exact body boundary conditions are satisfied on the instantaneous wetted surface of the moving body while the free surface boundary conditions are linearized.The characteristics of source strength on the waterline has been especially studied and a new numerical source model is presented for the floating body with large flare.