相邻多浮体与波浪作用的共振物理现象数值模拟  

Numerical simulation of resonance between adjacent multi-floating bodies and waves

作　　者：陈学彬[1] 詹杰民[1] 苏炜[1] 

机构地区：[1]中山大学应用力学与工程系,广东广州510275

出　　处：《中山大学学报（自然科学版）》2016年第1期54-62,共9页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家海洋公益性行业科研专项基金资助项目(201005002)

摘　　要：基于Fluent的二次程序开发功能,利用动量源项造波方法,构建了数值造波消波水槽。利用所建立的数值水槽,对波浪与相邻三浮体作用的共振物理现象进行了数值模拟,数值模拟结果与实验结果吻合良好。研究结果表明在低频波下,浮体系统中越靠后物体所受水平力反而越大。随后探讨了浮体浸没水深对共振的影响,指出任意物体浸没水深变小都将使得间隙共振频率往高频移动;所有物体水平受力大小与自身浸没水深总体成正相关,而竖直受力大小与自身浸没水深的关系对不同物体而言不同。最后探讨了双浮体系统中第三物体的前后加入形式对共振物理现象的影响,指出第三物体前后形式的加入都将使得间隙共振频率往低频移动,并且很大可能将出现第二共振频率。Based on the secondary development in Fluent, the study built a 2D numerical wave tank by the method of momentum source. Firstly, the established wave tank was used to simulate the resonance phenomenon between the waves and multi-floating bodies, and the numerical results were in good agreement with the experimental data. The results showed that the horizontal force acting on the last body was the largest. Subsequently, the influences of draft on resonance phenomenon were analyzed, indicating that the horizontal force acting on each body was, on the whole, correlated with its draft while the relation between vertical force and draft varied with the body. In the end, the influence of the addition of third body on resonance phenomenon in the gap was discussed, showing that resonance frequency would move to lower and the second resonance frequency would probably appear when the third body was added into the floating system.

关 键 词：共振 浮体 造波 浸没水深 

分 类 号：TV139.2[水利工程—水力学及河流动力学]