Rotational statistics in granular flows of smooth cylindrical particles
| Autor: | Jeffrey Olafsen, J. Jantzi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Rotational degree Dynamics (mechanics) 0211 other engineering and technologies Degrees of freedom (physics and chemistry) General Physics and Astronomy Angular velocity 02 engineering and technology Dissipation 01 natural sciences Three degrees of freedom Flow (mathematics) Mechanics of Materials 0103 physical sciences Statistics General Materials Science 010306 general physics 021101 geological & geomatics engineering Spin-½ |
| Zdroj: | Granular Matter. 22 |
| ISSN: | 1434-7636 1434-5021 |
| DOI: | 10.1007/s10035-019-0976-5 |
| Popis: | We report the results of an experiment to investigate the energy dissipation in the rotational degree of freedom for smooth cylindrical particles in a driven granular flow. The 2D geometry and the experimental design allow for the measurement of three degrees of freedom in the dynamics: the rotational degree of freedom for the disks to spin about their cylindrical axes as well as the two translational degrees of freedom of the particles within the cell. The rotational velocity statistics demonstrate non-Gaussian behavior as well as a significant amount of energy being dissipated through the flow via the tangential friction between particles. These results are significant in that many driven granular experiments use smooth cylindrical or spherical particles to investigate granular dynamics, but the contribution to the dynamics from the rotational degrees of freedom is often unmeasured. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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