| Issue |
EPJ Web Conf.
Volume 340, 2025
Powders & Grains 2025 – 10th International Conference on Micromechanics on Granular Media
|
|
|---|---|---|
| Article Number | 09015 | |
| Number of page(s) | 4 | |
| Section | Particle-Based Numerical Methods | |
| DOI | https://doi.org/10.1051/epjconf/202534009015 | |
| Published online | 01 December 2025 | |
https://doi.org/10.1051/epjconf/202534009015
Shear flow of lubricant coated powder particles
1 CSIR-National Chemical Laboratory, Pune 411008 India
2 Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002 India
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Published online: 1 December 2025
Abstract
We have examined the lubrication between bulk powder particles flowing under gravity due to presence of a small content of tiny lubricant particles. The flow behavior of these particles is studied using discrete element method (DEM) simulations in an inclined chute system. The flow rate exhibits a non-monotonic dependence on the lubricant content, i.e. it initially increases with lubricant content while reaching a maximum followed by a decrease at larger lubricant contents. This is found to be in close qualitative agreement with the previous experimental study. While the increase in the flow rate is attributed to reduction in inter-particle friction due to presence of low friction lubricant particles at contact between bulk powder particles, the reduction in the flow rate is attributed to closed packing of a larger number of smaller sized lubricant particles leading to damping of momentum.
© The Authors, published by EDP Sciences, 2025
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