Improved MPS-FE Fluid-Structure Interaction CoupledMethod with MPS PolygonWall Boundary Model
Improved MPS-FE Fluid-Structure Interaction CoupledMethod with MPS PolygonWall Boundary Model
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DOI：
10.3970/cmes.2014.101.229
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发表时间：
2014-10
影响因子：
2.4
通讯作者：
N. Mitsume;S. Yoshimura;K. Murotani;Tomonori Yamada
中科院分区：
文献类型：
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作者：
N. Mitsume;S. Yoshimura;K. Murotani;Tomonori Yamada
MPS-FE方法采用有限元方法进行结构计算，移动粒子模拟方法进行有自由面的流体计算，可用于求解有自由面的流固耦合问题。传统的MPS-FE方法，其中MPS壁边界粒子和有限元重叠，以便在流体-结构界面交换信息，是不通用的，并减少了软件模块化的优势。在这项研究中，我们开发了一种非重叠的方法，在该方法中，通过MPS多边形壁模型，流体计算中的界面对应于结构计算中的界面。通过求解弹性障碍物溃坝问题，并与常规MPS-FE法和质点有限元法的计算结果进行比较，验证了改进MPS-FE法的准确性。
The MPS-FE method, which adopts the Finite Element (FE) method for structure computation and the Moving Particle Simulation (MPS) method for fluid computation involving free surfaces, was developed to solve fluid-structure interaction problems with free surfaces. The conventional MPS-FE method, in which MPS wall boundary particles and finite elements are overlapped in order to exchange information at a fluid-structure interface, is not versatile and reduces the advantages of the software modularity. In this study, we developed a nonoverlapping approach in which the interface in the fluid computation corresponds to the interface in the structure computation through an MPS polygon wall model. The accuracy of the improved MPS-FE method was verified by solving a dam break problem with an elastic obstacle and comparing the result obtained with that of the conventional MPS-FE method and particle FEM.