Acta Physica Sinica, Volume. 68, Issue 23, 234501-1(2019)
Fig. 1. Super-quadric discrete element model of spherical and ellipsoidal elements: (a)
Fig. 2. Contact detection between super-quadric particles超二次曲面单元间的接触检测
Fig. 3. Comparison of mixing process between experiment results[31] and DEM simulation results at different rotating speeds: (a) Mixing pattern at 20 r/min; (b) Lacey mixing index at 20 r/min; (c) Lacey mixing index at 40 r/min.
不同转动圈数下颗粒混合过程的实验结果[31]和离散元数值结果的对比 (a)
Fig. 4. Schematic diagram of three-dimensional horizontal drum simulated by DEM model (a) and examples of ellipsoids with different aspect ratios (b)三维水平圆筒的离散元数值模型(a)和不同长宽比的椭球模型(b)
Fig. 5. The influence of rotating speed and aspect ratio on the mixing process: (a) Ellipsoids (
Fig. 6. The influence of rotating speed and particle shape on the Lacey mixing index and mixing rate: (a) Ellipsoids (
Fig. 7. Mixing rate of the ellipsoid and spherical particles varies with the fill level at
Fig. 8. Mixing rate and initial packing fraction under various aspect ratios at 30 r/min: (a) Mixing rate; (b) initial packing fraction
Fig. 9. The velocity profiles of granular bed for differently shaped particles: (a) Ellipsoids (
Fig. 10. Translational and rotational kinetic energy at different rotating speeds for differently shaped particles: (a), (b) Ellipsoids (
Fig. 11. Translational and rotational kinetic energy at 30 and 50 r/min for spheres and ellipsoids: (a) Average translational kinetic energy; (b) average rotational kinetic energy
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Si-Qiang Wang, Shun-Ying Ji.
Received: Jul. 13, 2019
Accepted: --
Published Online: Sep. 17, 2020
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