A δSPH–SPIM coupled method for fluid–structure interaction problems. (February 2021)

• Record Type: Journal Article
• Authors: Zhang, Guiyong; Hu, Taian; Sun, Zhe; Wang, Shuangqiang; Shi, Shuwen; Zhang, Zhifan
• Is Part Of: Journal of fluids and structures. Volume 101(2021)
• Publication Date: 2021-02
• Subjects: δ Smoothed Particle Hydrodynamics (δSPH) -- Smoothed Point Interpolation Method (SPIM) -- Fluid–structure interaction (FSI) -- Water entry -- Dam-break flow; Fluid-structure interaction -- Periodicals; Fluid mechanics -- Periodicals; Structural dynamics -- Periodicals; Structural analysis (Engineering) -- Periodicals; 620.106
• DOI: 10.1016/j.jfluidstructs.2020.103210
• Languages: English
• ISSNs: 0889-9746

Abstract

Abstract: In this work, the fluid–structure interaction (FSI) problems have been studied by coupling the δ Smoothed Particle Hydrodynamics ( δ SPH) with the Smoothed Point Interpolation Method (SPIM), which is abbreviated as δ SPH–SPIM coupled method. SPIM is used for structure dynamics owing to its good performance for large deformation analysis of solids. For the fluid solver, in order to further reduce the unphysical noise in pressure field, the δ SPH (where the density diffusion term is added into the continuity equation) is adopted. Inspired by the particle-element method, a new interpolation scheme is proposed for the coupling force calculation and transfer, which does not require the fluid and solid spacing to be the same. The coupled method has been verified by hydrostatic water column on an elastic plate, and has been applied to solve the problems of high speed water entry of an elastic wedge as well as dam-break flow.