不同入射波对管束结构受力特性的影响  

Influence of different incident waves on the force characteristics of triple-pipe bundles

作　　者：张志豪 涂佳黄[1,2] 黄林茜 吕海宇 邓旭辉 ZHANG Zhi-hao;TU Jia-huang;HUANG Lin-xi;LV Hai-yu;DENG Xu-hui(College of Civil Engineering and Mechanics,Xiangtan University,Xiangtan 411105,China;Hunan Key Laboratory of Geotechnical Mechanics and Engineering Safety,Xiangtan 411105,China)

机构地区：[1]湘潭大学土木工程与力学学院,湖南湘潭411105 [2]岩土力学与工程安全湖南省重点实验室,湖南湘潭411105

出　　处：《船舶力学》2022年第4期468-480,共13页Journal of Ship Mechanics

基　　金：国家自然科学基金青年项目(51434002);国家自然科学基金青年项目(11602214);湖南省自然科学基金面上项目(2020JJ4568)。

摘　　要：基于DualSPHyscis开源程序,对波浪数值水池以及波浪与结构相互作用进行模拟,通过对造波板施加预定义函数来实现Stokes二阶规则波的产生,同时在下游边界附近处设置粘性消波区来实现消波功能。通过对波浪数值水池自由液面高度和测量点速度值与Stokes二阶理论值的对比,验证SPH方法对波浪数值模型求解的可靠性。另外,为了验证该方法能正确求解波浪与结构的相互作用,将SPH模型求解结果与实验结果、理论结果进行对比,吻合度较高。最后,对波浪与三圆柱管束结构相互作用60组工况进行模拟,探究不同旋转角度下三圆柱管束所受波浪力的变化特性,分析不同波参数对结构受力特性的影响,并引入单圆柱体结果作为对比分析。当旋转角度为90°时,三圆柱管束结构所受的波浪力最大;旋转角度为180°时,三圆柱管束结构的受力最小。Based on the open source code DualSPHyscis,the wave numerical basin and the wave-structure interaction were simulated.The pre-defined function was applied to the wave-making boards to generate second-order regular waves,and a damping zone was set near the downstream boundary.The wave elevation and the velocity magnitude were compared with the theoretical results,verifying the reliability of the SPH method for wave generation.In addition,in order to verify the correctness of the wave force affected by the interaction between the waves and the cylinder,the SPH-model solution was also verified with the experimental results.Finally,the wave interaction with triple-pipe bundle(TPB)was simulated with 60 cases,and the variation characteristics of the wave force on the TPB were explored at different rotation angles.The influence of different wave parameters was analyzed to figure out the mechanical characteristics of the structure.The results of the single cylinder were also introduced for making a comparison.The wave force on the TPB was the largest at the rotation angle of 90°and reached its minimum at the rotation angle of 180°.

关 键 词：SPH方法 三维波浪 管束结构 冲刷作用 最大波浪力 

分 类 号：O355[理学—流体力学]