| Zugriffsnummer | 54825 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Influence of the Reynolds number from ReT = 150 to 210 on size-dependent bipolar charging |
| Autor(in); Institution | |
| Quelle/Jahr | Journal of Physics: Conference Series: 2702 (2024), 1 - 7 |
| Artikelnummer | 012027 |
| ISSN | 1742-6596 (online) ; 1742-6588 (print) |
| DOI | |
| URL | |
| Verlag | Bristol: IOP Publishing |
| Konferenzangaben | International Conference on Electrostatics 2023, London, 04-07, September, 2023, UK |
| Zusammenfassung | We recently found wall-bounded turbulence to suppress and control bipolar triboelectric charging of particles of identical material. This control is due to fluid modifying the motion of light particles. Thus, the particles’ charge distribution depends on their Stokes number distribution. More specifically, fluid forces narrow the bandwidth of the charge distribution, and bipolar charging reduces dramatically. Consequently, not the smallest but mid-sized particles collect the most negative charge. However, the influence of the Reynolds number or particle concentration on bipolar charging of polydisperse particles is unknown. This paper presents the charging simulations of same-material particles the in different wall-bounded flows. In a comprehensive study, we vary the Reynolds number from ReT = 150 to 210 and the particle number density from 4 × 109m-3 to 1 × 1010m-3 to further explore the influence of the carrier flow on bipolar charging. We model charge transfer based on the balance of transferable charge species. Such species can represent adsorbed ions transferred during collisions or free electrons captured into a lower energy state on the other surface. The turbulent flow is modeled via Direct Numerical Simulations (DNS) and is coupled to the particulate phase modeled via the Discrete Element Method (DEM). Overall, our multiphysics approach couples the fluid dynamics, electric field, triboelectric charging, and particle momentum into one complex simulation. |
| Kostenfreier Zugang | Open Access Gold |
| Rechteinformation | CC BY 3.0 ; Creative Commons Attribution 3.0 License |
| Themenbereich der Metrologie | Physikalische Sicherheitstechnik, Explosionsschutz |
| Innovationscluster | Energie |
| Forschungsprojekt | PowFEct |
| Förderinformationen (1) |
Förderername: European Research Council (ERC)
Förderer ID: 0000 0000 8923 0953 Förderer ID Typ: ISNI Titel der Förderung: PowFEct Förderungsnummer: 947606 URI der Förderung: https://cordis.europa.eu/project/id/947606/de |