论文部分内容阅读
建立了外域用差分求解高阶Boussinesq方程、内域用有限元求解Laplace方程的三维非线性波浪对船作用的时域计算耦合模型.研究了该类三维耦合模型的匹配条件,耦合求解过程和内域、外域公共区域长度的确定,探讨了内域有限元网格的剖分方法.把该耦合模型的计算结果与实验结果、内域用Euler方程的耦合模型计算结果进行了对比,结果表明该耦合模型具有满意的精度,适用于模拟较大区域内波浪对三维船等固定物体的作用,为今后近海岸大区域非线性波浪对三维非规则物体作用的时域计算和三维分区计算提供了参考.
A time-domain computational coupling model was established to solve the high-order Boussinesq equations in the out-domain with differential and the three-dimensional non-linear waves to solve the Laplace equation in the inner domain. The matching conditions, Domain and outdomain.A comparison of the calculated results of the coupled model with the experimental results and the calculation results of the coupled model of the Euler equation in the inner domain has been carried out.The results show that the The coupling model has satisfactory accuracy and is suitable for simulating the effect of waves on fixed objects such as three-dimensional ships in a large area. It provides a reference for the time-domain calculation and three-dimensional partition calculation of the effect of nonlinear wave on three-dimensional irregular objects in the near future .