Journal
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
Volume 105, Issue -, Pages 70-77Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.enganabound.2019.04.015
Keywords
Non-Newtonian solid-liquid flow; Discrete element method; Moving particle semi-implicit method; Free-surface flow; Numerical simulation
Funding
- National Natural Science Foundation of China [11772351]
- National Key Technology RD Program [2018YFC0406604]
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Due to the complicated interactions between the liquid phase and solid particles, it is important to adequately simulate the components themselves in a non-Newtonian solid liquid flow with a free surface. In this work, a hybrid computational framework is presented to simulate the non-Newtonian free-surface flow of the liquid-grain mixture by coupling the Moving Particle Semi-implicit (MPS) method and the Discrete Element Method (DEM). The DEM governs the motion of the solid particles, while the MPS is extended to model the non-Newtonian rheology and free surfaces. The robustness and the correctness of the proposed method were illustrated by several numerical examples involving non-Newtonian free surface flows with solid particles. The simulated results were in good agreement with analytical solutions or available experimental data in the literatures.
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