| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Aerodynamic optimization of a microturbine inserted in a magic-angle spinning system |
| Autor/-in: | Herzog, Nicoleta Wilhelm, Dirk Koch, Stefan Purea, Armin Osen, David Knott, Benno Engelke, Frank |
| Erschienen in: | Journal of Fluids Engineering |
| Band(Heft): | 138 |
| Heft: | 12 |
| Seite(n): | 121106 |
| Erscheinungsdatum: | 2016 |
| Verlag / Hrsg. Institution: | The American Society of Mechanical Engineers |
| ISSN: | 1528-901X 0098-2202 |
| Sprache: | Englisch |
| Schlagwörter: | Fluid dynamics; Turbine |
| Fachgebiet (DDC): | 620: Ingenieurwesen |
| Zusammenfassung: | The fluid dynamics of a microturbine system that is applied in a device for chemical and biological analysis – a so-called magic-angle spinning (MAS) probe – is investigated. The drive fluid is pressurized air at ambient temperature provided by nozzles aligned on an intake spiral, driving a Pelton-type microturbine. Computational fluid dynamics (CFD) simulations have been performed and compared with fluid dynamics measurements of the MAS system with 1.3 mm rotor diameter for spinning rates between 23 kHz and 67 kHz. The main optimization criteria of the MAS system are rotor speed and turbine stability and not primarily efficiency, which is standard for turbomachinery applications. In the frame of fabrication tolerances, a sensitivity study has been carried out by varying the nozzles diameter and the nozzle position relative to the rotor. The presented fluid dynamics study of the microturbine system includes the analysis of local fluid flow values such as velocity, temperature, pressure, and Mach number, as well as global quantities like forces and driven torque acting on the turbine. Comparison with the experimental results shows good agreement of the microturbine efficiency. Furthermore, the parameter study of the nozzle diameter reveals optimization potential for this high-speed microturbine system employing a smaller nozzle diameter. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/10585 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | School of Engineering |
| Organisationseinheit: | Institut für Angewandte Mathematik und Physik (IAMP) Institut für Energiesysteme und Fluid-Engineering (IEFE) |
| Publiziert im Rahmen des ZHAW-Projekts: | Entwicklung eines Ultra-Low-Temperature NMR Probenkopfes für hochgeschwindigkeits Magic-Angle-Spinning Anwendungen mit Hilfe von Computational Fluid Dynamics (CFD) Simulationen |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
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Herzog, N., Wilhelm, D., Koch, S., Purea, A., Osen, D., Knott, B., & Engelke, F. (2016). Aerodynamic optimization of a microturbine inserted in a magic-angle spinning system. Journal of Fluids Engineering, 138(12), 121106.
Herzog, N. et al. (2016) ‘Aerodynamic optimization of a microturbine inserted in a magic-angle spinning system’, Journal of Fluids Engineering, 138(12), p. 121106.
N. Herzog et al., “Aerodynamic optimization of a microturbine inserted in a magic-angle spinning system,” Journal of Fluids Engineering, vol. 138, no. 12, p. 121106, 2016.
HERZOG, Nicoleta, Dirk WILHELM, Stefan KOCH, Armin PUREA, David OSEN, Benno KNOTT und Frank ENGELKE, 2016. Aerodynamic optimization of a microturbine inserted in a magic-angle spinning system. Journal of Fluids Engineering. 2016. Bd. 138, Nr. 12, S. 121106
Herzog, Nicoleta, Dirk Wilhelm, Stefan Koch, Armin Purea, David Osen, Benno Knott, and Frank Engelke. 2016. “Aerodynamic Optimization of a Microturbine Inserted in a Magic-Angle Spinning System.” Journal of Fluids Engineering 138 (12): 121106.
Herzog, Nicoleta, et al. “Aerodynamic Optimization of a Microturbine Inserted in a Magic-Angle Spinning System.” Journal of Fluids Engineering, vol. 138, no. 12, 2016, p. 121106.
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