Verifications for Large-Scale Parallel Simulations of 3D Fluid–Structure Interaction Using Moving Particle Simulation (MPS) and Finite Element Method (FEM)

Fluid–Structure Interaction (FSI) is an important phenomenon in many fields. In this study, the Moving Particle Simulation (MPS) along with Finite Element Method (FEM) are coupled together. MPS-FEM coupled method is used as the numerical simulators to estimate the effects for structures by the fluid pressure of the tsunami. This simulator consists of two solvers: fluid analysis and structure analysis. The fluid analysis is based on MPS and the structural part is analyzed by using FEM. In this paper, for verification of the MPS-FEM coupled method, the problem of hydrostatic pressure on a structure is calculated. The results are compared with the theoretical values and the results obtained by the original FEM analysis. We confirmed that the MPS-FEM coupling method can achieve adequate accuracy. Furthermore, the MPS-FEM coupled simulation for the turbine building of Fukushima Dai-ichi Nuclear Power Station Unit 1 has been done.