| Issue |
EPJ Web Conf.
Volume 340, 2025
Powders & Grains 2025 – 10th International Conference on Micromechanics on Granular Media
|
|
|---|---|---|
| Article Number | 02009 | |
| Number of page(s) | 4 | |
| Section | Rheology and Constitutive Modelling | |
| DOI | https://doi.org/10.1051/epjconf/202534002009 | |
| Published online | 01 December 2025 | |
https://doi.org/10.1051/epjconf/202534002009
On the systematics of rheological measurements of gas fluidized grains
1 Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Cologne, Germany
2 Institute for Theoretical Physics, University of Cologne, Zülpicher Straße 77, 50937 Cologne, Germany
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
** e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
*** e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 1 December 2025
Abstract
There have been many attempts to characterize the flow behavior of fluidized and non-fluidized granular particles [1–4]. The well-known Geldart classification [5] divides granular particles by their fluidization characteristics and the rheology of air-fluidized granular media has been recently investigated both experimentally and theoretically [4, 6], considering the fluidized bed as a homogeneous medium. We propose a measurement protocol for accounting for the abundant effects which can occur in a fluidized bed when using a rheometer, using Polystyrene (PS) particles with a diameter of 140 μm. We observe that the system becomes more viscous over time as charges accumulate.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.