Schröer, Kevin ; Kurzeja, Patrick ; Schulz, Stephan ; Brockmann, Philipp ; Hussong, Jeanette ; Janas, Peter ; Wlokas, Irenaeus ; Kempf, Andreas ; Wolf, Dietrich E. (2020)
Dilute suspensions in annular shear flow under gravity: simulation and experiment.
In: EPJ Web of Conferences, 2017, 140
doi: 10.25534/tuprints-00014266
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
A dilute suspension in annular shear flow under gravity was simulated using multi-particle collision dynamics (MPC) and compared to experimental data. The focus of the analysis is the local particle velocity and density distribution under the influence of the rotational and gravitational forces. The results are further supported by a deterministic approximation of a single-particle trajectory and OpenFOAM CFD estimations of the overcritical frequency range. Good qualitative agreement is observed for single-particle trajectories between the statistical mean of MPC simulations and the deterministic approximation. Wall contact and detachment however occur earlier in the MPC simulation, which can be explained by the inherent thermal noise of the method. The multi-particle system is investigated at the point of highest particle accumulation that is found at 2/3 of the particle revolution, starting from the top of the annular gap. The combination of shear flow and a slowly rotating volumetric force leads to strong local accumulation in this section that increases the particle volume fraction from overall 0.7% to 4.7% at the outer boundary. MPC simulations and experimental observations agree well in terms of particle distribution and a close to linear velocity profile in radial direction.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Schröer, Kevin ; Kurzeja, Patrick ; Schulz, Stephan ; Brockmann, Philipp ; Hussong, Jeanette ; Janas, Peter ; Wlokas, Irenaeus ; Kempf, Andreas ; Wolf, Dietrich E. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Dilute suspensions in annular shear flow under gravity: simulation and experiment |
| Sprache: | Englisch |
| Publikationsjahr: | 2020 |
| Publikationsdatum der Erstveröffentlichung: | 2017 |
| Verlag: | EDP Sciences |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | EPJ Web of Conferences |
| Jahrgang/Volume einer Zeitschrift: | 140 |
| DOI: | 10.25534/tuprints-00014266 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/14266 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung aus Golden Open Access |
| Kurzbeschreibung (Abstract): | A dilute suspension in annular shear flow under gravity was simulated using multi-particle collision dynamics (MPC) and compared to experimental data. The focus of the analysis is the local particle velocity and density distribution under the influence of the rotational and gravitational forces. The results are further supported by a deterministic approximation of a single-particle trajectory and OpenFOAM CFD estimations of the overcritical frequency range. Good qualitative agreement is observed for single-particle trajectories between the statistical mean of MPC simulations and the deterministic approximation. Wall contact and detachment however occur earlier in the MPC simulation, which can be explained by the inherent thermal noise of the method. The multi-particle system is investigated at the point of highest particle accumulation that is found at 2/3 of the particle revolution, starting from the top of the annular gap. The combination of shear flow and a slowly rotating volumetric force leads to strong local accumulation in this section that increases the particle volume fraction from overall 0.7% to 4.7% at the outer boundary. MPC simulations and experimental observations agree well in terms of particle distribution and a close to linear velocity profile in radial direction. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-142666 |
| Zusätzliche Informationen: | Powders and Grains 2017 - 8th International Conference on Micromechanics on Granular Media |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Strömungslehre und Aerodynamik (SLA) |
| Hinterlegungsdatum: | 30 Nov 2020 15:39 |
| Letzte Änderung: | 20 Okt 2023 06:47 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Dilute suspensions in annular shear flow under gravity: simulation and experiment. (deposited 30 Nov 2020 15:39) [Gegenwärtig angezeigt]
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