Print Email Facebook Twitter DEM modelling and analysis of the mixing characteristics of sphere-cylinder granular mixture in a rotating drum Title DEM modelling and analysis of the mixing characteristics of sphere-cylinder granular mixture in a rotating drum Author Jiang, Chuanning (Northeastern University China) An, Xizhong (Northeastern University China) Li, Meng (Northeastern University China) Wu, Yuhang (Northeastern University China) Gou, Dazhao (University of New South Wales) Wu, Yongli (TU Delft Resources & Recycling) Date 2023 Abstract Mixing structures and characteristics are crucial to the mixing quality of spherical/cylindrical binary granular systems like the biomass-coal mixtures which can affect energy release and carbon emissions. In this work, the mixing of binary spheres/cylinders in a rotating drum was numerically reproduced by using discrete element method (DEM). Systematic parametric studies were conducted to identify the role of various parameters such as rotation speed (ω) of the drum, aspect ratio (AR), mass fraction (φc) and volume fraction (φv) of cylindrical particles, and the density difference (φρ) between the binary particles; meanwhile, corresponding mechanisms were also explored by analyzing the kinetic energy. Results show that when the flow regime is rolling/cascading, the mixing quality can be effectively improved; however, when the flow regime is cataracting, the mixing quality becomes worse. With AR close to 1.0, the interlocking effect between particles becomes weaker and the porosity becomes smaller, which leads to the higher contact efficiency and thus improves the mixing quality. Binary mixtures with different φc are synergistically affected by energy input and interlocking structure. The volume of spherical particles is more conducive to improving the mixing quality than that of cylindrical particles when the volume of the granular system is at the same level. The φρ can cause segregation behavior of particles so as to make the mixing quality worse. Subject MechanismsMixingNumerical simulationsSpheres/cylinders binary mixtures To reference this document use: http://resolver.tudelft.nl/uuid:e738d971-8c7d-48b7-bc29-baf383ebab1f DOI https://doi.org/10.1016/j.powtec.2023.118653 Embargo date 2023-11-12 ISSN 0032-5910 Source Powder Technology, 426 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Chuanning Jiang, Xizhong An, Meng Li, Yuhang Wu, Dazhao Gou, Yongli Wu Files PDF 1_s2.0_S0032591023004370_main.pdf 18.51 MB Close viewer /islandora/object/uuid:e738d971-8c7d-48b7-bc29-baf383ebab1f/datastream/OBJ/view