摘要
在这糊 3D 数字模型被开发学习在波浪之间的复杂相互作用,一套双人脚踏车修理了柱体。液体被认为是 inviscid 并且无旋。因此, Helmholtz 方程被用作一个管理方程。边界元素方法(BEM ) 被采用到 discretize 相关方程。开的边界在学习领域的远领域里被使用。线性波浪被产生并且向双人脚踏车宣传了固定柱体估计力量在他们上适用。特殊注意在在力量上改变在柱体, ka 和 kd 之间的非维的柱体半径和距离上对效果的考虑被给予并且套住模式。在一套九双人脚踏车柱体的中间的柱体波浪力量和套住的模式被验证利用分析数据。比较证实模型的精确性。n 双人脚踏车柱体上的嵌入的波浪力量评价的结果证明在排的批评柱体是为柱体的奇数的中间的。而且,批评套住的模式效果发生为的结果表演近把柱体半径规范化为 0.5 和 1.0。最后,为 n 双人脚踏车柱体的力量评价证实中间的柱体对规范的分离距离的那个力量振幅关于单个柱体的波动。
In this paper a 3D numerical model was developed to study the complicated interaction between waves and a set of tandem fixed cylinders.The fluid was considered to be inviscid and irrotational.Therefore,the Helmholtz equation was used as a governing equation.The boundary element method(BEM) was adopted to discretize the relevant equations.Open boundaries were used in far fields of the study domain.Linear waves were generated and propagated towards tandem fixed cylinders to estimate the forces applied on them.Special attention was paid to consideration of the effect on varying non-dimensional cylinder radius and distance between cylinders,ka and kd on forces and trapped modes.The middle cylinder wave forces and trapped modes in a set of nine tandem cylinders were validated utilizing analytical data.The comparisons confirm the accuracy of the model.The results of the inline wave force estimation on n tandem cylinders show that the critical cylinder in the row is the middle one for odd numbers of cylinders.Furthermore the results show that the critical trapped mode effect occurs for normalized cylinder radiuses close to 0.5 and 1.0.Finally the force estimation for n tandem cylinders confirms that force amplitude of the middle cylinder versus normalized separation distance fluctuates about that of a single cylinder.