Prediction of coupled particle and fluid flows using DEM and SPH |
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| Affiliation: | 1. Division of Mechanics of Solid Materials, Luleå University of Technology, SE-97187 Luleå, Sweden;2. MiMeR – Minerals and Metallurgical Research Laboratory, Luleå University of Technology, SE-97187 Luleå, Sweden;1. School of Chemistry, Physics and Mechanical Engineering, Faculty of Science and Engineering, Queensland University of Technology, 2-George Street, Brisbane, QLD 4001, Australia;2. Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, University of Ruhuna, Hapugala, Galle, Sri Lanka;1. Center for Minerals Research, University of Cape Town, Chemical Engineering Dept. Rondebosch, 7701, South Africa;2. CSIRO Data61, Private Bag 10, Clayton South 3168, Australia;1. Division of Mechanics of Solid Materials, Luleå University of Technology, SE-97187 Luleå, Sweden;2. MiMeR – Minerals and Metallurgical Engineering, Luleå University of Technology, SE-97187 Luleå, Sweden;1. CEHIDRO, Instituto Superior Técnico, Universide de Lisboa, Portugal |
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| Abstract: | A coupled DEM (discrete element method) and SPH (smoothed particle hydrodynamics) method is used to predict the motion of the solid particles interacting with slurry flow. DEM simulates the motion of the coarser particulates while SPH simulates the slurry (water and finer particulates). This three dimensional method is demonstrated for multiphase mixing flow on a chute, in a central slice of a 36′ SAG mill and in a Hardinge pilot mill. It is shown to be robust and stable and able to predict complex coupled free surface particle and slurry flows including splashing with saturation levels varying from dry to fully saturated. It is suitable for prediction of multiphase flow in moving equipment including small scale structures such as classification grates. |
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| Keywords: | DEM SPH Coupling Slurry Mills Chutes |
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