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Approximate Packing of Binary Mixtures of Cylindrical Particles
Gulfairuz Iniyatova1, Assiya Yermukhambetova1, Aidana Boribayeva1
1Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 01000, Kazakhstan.
This study used the discrete element method to analyze cylindrical particle packing. Higher aspect ratios and more elongated particles resulted in less dense packings, impacting industrial applications.
Area of Science:
- Chemical Engineering
- Materials Science
- Physics
Background:
- Particle packing is crucial for industrial processes and chemical engineering.
- Understanding the structure of granular materials is essential for optimizing their performance.
Purpose of the Study:
- To investigate the packing structure of binary mixtures of cylindrical particles.
- To analyze the influence of particle aspect ratio and volume fraction on packing density and porosity.
Main Methods:
- Discrete Element Method (DEM) simulations were employed to generate and pack cylindrical particles.
- Planar packing fraction was used to measure packing density.
- Voronoi tessellation was utilized to quantify the porous structure.
Main Results:
- Particles with larger aspect ratios exhibited random orientation, while smaller aspect ratios showed preferential horizontal orientation.
- Lower packing densities were observed with increasing particle aspect ratios.
- Mixtures with a higher fraction of elongated cylindrical particles resulted in less dense packings.
Conclusions:
- The aspect ratio and volume fraction significantly influence the packing structure and density of cylindrical particle mixtures.
- The findings provide insights into granular material behavior for industrial applications.
- DEM and Voronoi tessellation are effective tools for characterizing complex particle packings.
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