# A 3D Simulation of a Moving Solid in Viscous Free-Surface Flows by Coupling SPH and DEM

A 3D Simulation of a Moving Solid in Viscous Free-Surface Flows by Coupling SPH and DEM - Download this document for free, or read online. Document in PDF available to download.

Mathematical Problems in Engineering - Volume 2017 2017, Article ID 3174904, 7 pages - https:-doi.org-10.1155-2017-3174904

Research Article

College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China

State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China

Correspondence should be addressed to Liu-Chao Qiu and Yu Han

Received 30 September 2016; Revised 14 November 2016; Accepted 19 December 2016; Published 10 January 2017

Academic Editor: Payman Jalali

Copyright © 2017 Liu-Chao Qiu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This work presents a three-dimensional two-way coupled method to simulate moving solids in viscous free-surface flows. The fluid flows are solved by weakly compressible smoothed particle hydrodynamics SPH and the displacement and rotation of the solids are calculated using the multisphere discrete element method DEM allowing for the contact mechanics theories to be used in arbitrarily shaped solids. The fluid and the solid phases are coupled through Newton’s third law of motion. The proposed method does not require a computational mesh, nor does it rely on empirical models to couple the fluid and solid phases. To verify the numerical model, the floating and sinking processes of a rectangular block in a water tank are simulated, and the numerical results are compared with experimental results reported in published literatures. The results indicate that the method presented in this paper is accurate and is capable of modelling fluid-solid interactions with a free-surface.

Author: Liu-Chao Qiu, Yi Liu, and Yu Han

Source: https://www.hindawi.com/

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