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To address the unclear relationship between material properties and the separation performance of a decanter centrifuge during oil-sands separation, a numerical simulation system based on the Multiple Reference Frame(MRF) was designed and developed. The Eulerian multiphase flow model and SST k-ω turbulence model were employed to analyze the internal flow field of oil sands during centrifugal separation. The effects of oil-sands viscosity and solid particle size on flow field distribution and separation performance were investigated. Results show that the separation efficiency decreases as oil-sands viscosity increases. When viscosity increased from 0. 005 Pa·s to 0. 100 Pa·s, separation efficiency dropped from 99. 43% to 77. 48%. In contrast, separation efficiency increased with larger solid particle size, and oilsands viscosity exerts a greater influence on separation performance than particle size. Based on these results, multiple surrogate models were built to predict the combined effects of viscosity and particle sizeof oil sands. The Kriging model showed the highest prediction accuracy, with a coefficient of determination of 0. 971 12. The research findings provide a theoretical basis for elucidating the mechanism by which material properties influence flow field distribution and separation efficiency during oil-sands separation processes.
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Basic Information:
DOI：10.13353/j.issn.1004.9533.20252101
China Classification Code:TE93
Citation Information:
[1]Lu Yao,Long Yuntao,Teng Jinbiao ,et al.Study on the influence of oil-sand properties on the separation performance of a decanter centrifuge and research on surrogate models[J].Chemical Industry and Engineering().DOI:10.13353/j.issn.1004.9533.20252101.
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