A coupled SPH-PD model for fluid–structure interaction in an irregular channel flow considering the structural failure

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Article number115573
Journal / PublicationComputer Methods in Applied Mechanics and Engineering
Volume401
Issue numberPart B
Online published19 Sept 2022
Publication statusPublished - 1 Nov 2022

Abstract

Understanding fluid–structure interaction (FSI) is important because it dominates diverse natural phenomena and engineering problems. This paper presents an integrated particle model for FSI problems involving irregular channel flows and crack propagation in structures. The proposed model is implemented as follows: (1) we couple weakly compressible smoothed particle hydrodynamics (WCSPH) with bond-based peridynamics (BBPD) in a partitioned approach (this framework has a much simpler algorithm than the previously reported SPH-PD method); (2) we propose a novel periodic boundary conditions (PBCs) algorithm for modeling flows in non-regular channels; and (3) we incorporate crack propagation in structural responses under fluid dynamics, which was rarely considered in previous works. The new framework has been validated and illustrated to be effective and versatile in diverse FSI problems, including hydrostatic pressure-induced solid deformation, violent free-surface flows and channel flows interacting with flexible structures. Compared with conventional grid-based methods, this particle framework is more user-friendly, since no extra effort is required to update meshes, even when a discontinuity appears during the modeling process. The extendibility and potential of this framework is further demonstrated by the simulation of fluid-driven deformation and crack propagation in elastomers.

Research Area(s)

  • Fluid–structure interaction, Integrated particle model, Irregular channel flow, Peridynamics, Periodic boundary condition, Smoothed particle hydrodynamics

Citation Format(s)

A coupled SPH-PD model for fluid–structure interaction in an irregular channel flow considering the structural failure. / Sun, Wei-Kang; Zhang, Lu-Wen; Liew, K.M.
In: Computer Methods in Applied Mechanics and Engineering, Vol. 401, No. Part B, 115573, 01.11.2022.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review