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3D gradient corrected SPH for fully resolved particle–fluid interactions

Joubert, Johannes C., Wilke, Daniel N., Govender, Nicolin, Pizette, Patrick, Tuzun, Ugur and Abriak, Nor-Edine (2020) 3D gradient corrected SPH for fully resolved particle–fluid interactions Applied Mathematical Modelling, 78. pp. 816-840.

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Fully resolved fluid–solid coupling is explored with the gradient corrected weakly compressible SPH methodology being used to simulate an incompressible Newtonian fluid as well as being used to obtain the coupling force information required to accurately represent these interactions. Gradient correction allows for the application of the Neumann boundary condition required to describe the pressure fields at solid interfaces, as well as symmetry boundary conditions for velocity (where applicable) without the use of ghost or mirrored particles. A scaling study is performed by investigating the drag on an infinitely long cylinder at different smoothed particle hydrodynamics (SPH) resolutions, with finer resolution scales showing good correlation to other studies. The drag characteristics of several particle shapes and topologies are also investigated making use of both convex and non-convex particle shapes. Clear distinction for both the fluid and solid particle responses for the various solid particle shapes are observed. Boundary effects are also explored with results showing a strong responses to changing domain geometry aspect ratios. A many particle system with two different particle shapes are simulated to investigate bulk behaviour of the different solids falling under gravity in a fluid. All results presented in this paper are obtained from full 3D simulations.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Joubert, Johannes C.
Wilke, Daniel N.
Pizette, Patrick
Tuzun, Ugur
Abriak, Nor-Edine
Date : February 2020
Funders : European Union\220s H2020
DOI : 10.1016/j.apm.2019.09.030
Copyright Disclaimer : Crown Copyright © 2019 Published by Elsevier Inc. All rights reserved.
Uncontrolled Keywords : Smoothed particle hydrodynamics (SPH); Fluid–solid coupling; Weakly compressible; Gradient correction; Particle drag; Boundary condition
Additional Information : This work was supported in part by the MARIE Sklodowska-CURIE Individual Fellowships with acronym DECRON, funded through the European Union\220s H2020 under REA grant agreement No. 747963. We gratefully acknowledge the support of the NVIDIA Corporation with the donation of the Titan GPUs used for this research.
Depositing User : Diane Maxfield
Date Deposited : 17 Jan 2020 12:37
Last Modified : 17 Jan 2020 12:37

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