Some considerations on the rheology of dense frictional cylindrical particles
Some considerations on the rheology of dense frictional cylindrical particles
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关于致密摩擦圆柱颗粒流变学的一些思考
DOI:
10.1016/j.partic.2022.02.005
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发表时间:
2022-02
期刊:
影响因子:
3.5
通讯作者:
Yu Guo
中科院分区:
文献类型:
--
作者:
Shiming Li;Jiahui Hao;Yanjie Li;Yu Guo
Discrete element method simulations of granular shear flows of frictional cylindrical particles are per-formed. From the simulations, solid-phase pressure, shear stress, and bulk friction coefficient can be measured, allowing the investigation of the effects of particle properties on the macroscopic flow behaviors. Thus, the inertial number I based rheological models, which were frequently used for the spherical particles in the previous work, are examined for the applicability to cylindrical particles in the present study. It is found that the particle aspect ratio, interparticle friction coefficient, and particle size polydispersity all affect the bulk friction coefficient-inertial number correlation and the solid volume fraction-inertial number correlation, and their effects vary in different flow regimes, which exhibit different mechanical behaviors.
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DOI:
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