基于MPS-FEM方法数值模拟孤立波与垂直板的相互作用  

Application of MPS-FEM method to numerical simulate the interaction between solitary wave and a vertical plate

作　　者：许彦章 万德成[1] XU Yan-zhang;WAN De-cheng(Computational Marine Hydrodynamics Lab(CMHL),State Key Laboratory of Ocean Engineering,School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室船海计算水动力学研究中心(CMHL),上海200240

出　　处：《水动力学研究与进展（A辑）》2020年第3期346-355,共10页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金项目(51879159,51809169);国家重点研发计划项目(2019YFB1704200,2019YFC 0312400);长江学者奖励计划(T2014099);上海市优秀学术带头人计划(17XD1402300)。

摘　　要：该文采用基于MPS-FEM方法自主开发的无网格法流固耦合求解器MPSFEM-SJTU,数值模拟孤立波与水下垂直板的相互作用。流体部分计算采用MPS方法,结构部分计算采用FEM方法,二者在接触面处采用核函数插值进行耦合。首先做了数值造波验证,孤立波采用推板造波。然后对比分析了孤立波分别与垂直刚性板和弹性板相互作用的差异。最后讨论分析板的弹性模量对孤立波与垂直板相互作用的影响。结果表明,弹性板对孤立波演化的影响与刚性板不同,同时板受到的压力也因为板的弹性模量的变化而不一样。This paper investigates the interaction between solitary wave and vertical plate by our in-house MPSFEM-SJTU solver based the Moving Particle Semi-implicit and Finite element method(MPS-FEM). The fluid domain is calculated by MPS method, while the solid domain is computed by FEM method. The kernel function-based interpolation technique is implemented to deal with the coupling interface. First, the piston-type wave-maker is employed to generated the solitary wave and the accuracy of wave generations is tested. Then, the interaction between solitary wave and an elastic vertical plate is compared with that between solitary wave and a rigid vertical plate. Finally, the interaction between solitary wave and elastic plates with different Young modulus is conducted to study the influence of plates’ Young modulus on the interaction. The result shows that differences between the influence of a rigid plate and that of an elastic plate on the wave evolution and pressure impacted on the plate changes along with the change of the plate’s Young modulus.

关 键 词：MPSFEM-SJTU求解器 孤立波 垂直板 

分 类 号：O352[理学—流体力学]