| Zugriffsnummer | 46374 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | On the influence of inlet perturbations on slug dynamics in horizontal multiphase flow - a computational study |
| Autor(in); Institution |
Schmelter, Sonja; 8.4, Mathematische Modellierung und Datenanalyse, PTB-Berlin
Olbrich, Marc; 8.4, Mathematische Modellierung und Datenanalyse, PTB-Berlin; Institute of Fluid Dynamics and Technical Acoustics, Technische Universität Berlin, Berlin, GERMANY
Bär, Markus; 8.4, Mathematische Modellierung und Datenanalyse, PTB-Berlin
Fiebach, Andre; 8.4, Mathematische Modellierung und Datenanalyse, PTB-Berlin
Knotek, Stanislav; Czech Metrology Institute, Brno, CZECH REPUBLIC
|
| Quelle/Jahr | Metrologia: 58 (2021), 01, 14 S. |
| Artikelnummer | 014003 |
| ISSN | 0026-1394 (PRINT) ; 1681-7575 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP Science |
| Freie Schlagworte | multiphase flow ; two-phase flow ; gas-liquid flow ; slug flow ; computational fluid dynamics (CFD) ; inlet perturbation ; random perturbation |
| Zusammenfassung | When multiphase flows are modeled numerically, complex geometrical and operational features of the experiments, such as the phase mixing section, are often not resolved in detail. Rather simplified boundary conditions are prescribed, which usually cause less irregular dynamics in the system than present in reality. In this paper, a perturbation that randomly disturbs the secondary components of the velocity vector at the inlet is proposed in order to capture the experimentally observed instabilities at the interface between the phases. This in particular enhances the formation of slugs in the pipe. Different amplitudes of the perturbation are investigated. One observes that, the higher the perturbation amplitude, the earlier the slugs occur. On the other hand, sufficiently far away from the inlet, the flow pattern shows the same dynamics for different perturbation amplitudes. Hence, no specific frequency is imposed by the prescribed perturbation. The simulation results are validated by comparison with liquid level data from a corresponding experiment. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Mathematik und metrologische Informationstechnik |
| Forschungsprojekt | 16ENG07: MultiFlowMet II: Multiphase flow reference metrology |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMPIR 2016 Energy Titel der Förderung: 16ENG07: MultiFlowMet II: Multiphase flow reference metrology Förderungsnummer: 16ENG07 URI der Förderung: https://www.euramet.org/research-innovation/search-research-projects/details/?tx_eurametctcp_project[project]=1466&tx_eurametctcp_project[controller]=Project&tx_eurametctcp_project[action]=show |