An integrated particle model for fluid–particle–structure interaction problems with free-surface flow and structural failure

Wu, K, Yang, D, Wright, N ORCID: https://orcid.org/0000-0002-1289-2830 and Khan, A, 2018. An integrated particle model for fluid–particle–structure interaction problems with free-surface flow and structural failure. Journal of Fluids and Structures, 76, pp. 166-184. ISSN 0889-9746

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Abstract

Discrete Element Method (DEM) and Smoothed Particles Hydrodynamics (SPH) are integrated to investigate the macroscopic dynamics of fluid-particle-structure interaction (FPSI) problems. With SPH the fluid phase is represented by a set of particle elements moving in accordance with the Navier-Stokes equations. The solid phase consists of physical particle(s) and deformable solid structure(s) which are represented by DEM using a linear contact model and a linear parallel contact model to account for the interaction between particle elements, respectively. To couple the fluid phase and solid particles, a local volume fraction and a weighted average algorithm are proposed to reformulate the governing equations and the interaction forces. The structure is coupled with the fluid phase by incorporating the structure's particle elements in SPH algorithm. The interaction forces between the solid particles and the structure are computed using the linear contact model in DEM. The proposed model is capable of simulating simultaneously fluid-structure interaction (FSI), particle-particle interaction and fluid-particle interaction (FPI), with good agreement between complicated hybrid numerical methods and experimental results being achieved. Finally, a specific test is carried out to demonstrate the capability of the integrated particle model for simulating FPSI problems with the occurrence of structural failure.

Item Type:	Journal article
Publication Title:	Journal of Fluids and Structures
Creators:	Wu, K., Yang, D., Wright, N. and Khan, A.
Publisher:	Elsevier
Date:	January 2018
Volume:	76
ISSN:	0889-9746
Identifiers:	Number Type 10.1016/j.jfluidstructs.2017.09.011 DOI S088997461730436X Publisher Item Identifier
Divisions:	Professional Services > The Directorate
Record created by:	Linda Sullivan
Date Added:	26 Oct 2018 14:04
Last Modified:	26 Oct 2018 14:04
URI:	https://irep.ntu.ac.uk/id/eprint/34763

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