斜向波与长棱柱型浮式结构物相互作用的边界元模拟

Boundary element simulation method for the interaction of oblique linear waves with long prismatic floating structures

采用第二类变形Bessel函数对斜向线性入射波与任意截面形状的长棱柱型浮式海洋结构物的相互作用问题进行了边界元法模拟,给出了常数元和线性元的奇异积分处理方法以及开边界的处理方式。对矩形和圆形结构物的水动力系数和波浪力进行了计算,并与解析解及有限元计算结果进行了比较。结果表明,本文方法能得到满意的结果,且未出现不规则频率现象。

The boundary element simulation method for the interaction of oblique linear waves with prismatic floating ocean structures with arbitrary cross section is investigated by using the second modified Bessel function. The singular integral method in a constant or linear element and the boundary treatment are proposed. The hydrodynamic coefficient and the wave forces on the and circular structures are calculated. By solution obtained by finite element method, irregular frequency phenomenon occurs. long kind open rectangular comparison with the theoretical solution and the numerical the results acquired by the authors are better and show that no