Numerical Simulation On Packing Density Of Spherical Particles With Normal Distribution
Journal Title: International Journal of engineering Research and Applications - Year 2018, Vol 8, Issue 10
Abstract
Numerical simulation about the packing density of spherical particles with normal distribution of particle size was carried out by discrete element method (DEM) software. First, the model of mono-sized spherical particles (30μm) was established to verify the rationality of numerical simulation. Second, it was found that for spherical particles with normally distributed particle size, the packing density is generally higher than mono-sized particles (theoretical packing density is 0.7406). By analyzing the porosity change curve of spherical particles with different variance(σ), the results show that with the increase of σ, the porosity decreases firstly and then increases, which is opposite to the trend of packing density. By comparing the simulation results with Horsfield compact packing theory, it was demonstrated that the packing density of spherical particles with normally distributed particle size is generally between 0.7406 (unitaryspherical particles) and 0.793 (binary spherical particles). And also, when the spherical particle model parameter is μ=30μm and σ=20, the packing density reaches a maximum value 0.795, which is slightly higher than the theoretical packing density of the binary spherical particles.
Authors and Affiliations
Huadong Yang, Shiguang Li
Keywords
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- EP ID EP402005
- DOI 10.9790/9622-0810034955.
- Views 122
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