MPS–FEM coupled method for 3D dam-break flows with elastic gate structures

Abstract

In this paper, the MPS–FEM coupled method is applied for the three-dimensional (3D) dam-break flow with elastic gate, where the Moving Particle Semi-implicit (MPS) method and the Finite Element Method (FEM) are respectively used to solve fluid flows and structure deformation. A partitioned coupling strategy of traditional Conventional Serial Staggered (CSS) strategy is employed for MPS method and FEM method coupling. An interfacial data interpolation module called three-dimensional Kernel Function Based Interpolation Technique (3D-KFBI) is developed for the three-dimensional fluid–structure interface. Based on the MPS–FEM​ coupled method, a self-developed MPSFSI solver is developed. Then, the stability, accuracy, convergence and energy conservation properties of the developed data interpolation algorithm is validated by two cases. Afterwards, the proposed coupled method is applied for the case of dam-break flow interacting with the elastic gate. A good agreement between present numerical result and published experiment data Antoci et al. (2007) demonstrates the accuracy and efficiency of the present coupled method. At last, MPSFSI solver is applied for the problem of the narrow dam-break flow with the elastic gate to investigate the three-dimensional effect.