港湾内非线性波浪对船剖面作用的时域计算模型(英文)

Time Stepping Solutions of Nonlinear Wave Forces on Ship Section in Harbor

文中用边界元数值求解复速度势模拟了波浪对船剖面的时域作用力,采用满足运动学和动力学条件的半拉朗格朗日法跟踪流体的自由表面。推导了适用本数值模型的辐射边界条件,此边界条件和海绵层边界条件组成的出口边界条件,可以使波浪很好地被吸收或传播出去。进行了相关物理模型实验,数值计算结果和实验结果的对比表明此模型能精确模拟波浪对船的作用力。

A 2D time-domain numerical model is developed to obtain nonlinear wave forces on ship section in harbor. The method is based on the boundary element method in the complex plane. A new radiation condition combined with sponge layers is used to remove the reflected waves from the computing domain. Relevant physical experiment is conducted to validate the numerical model, and it is shown that the numerical results agree with the experimental data.