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https://doi.org/10.21256/zhaw-23482| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Low-order modeling of can-annular combustors |
| Autor/-in: | Fournier, Guillaume J. J. Meindl, Max Silva, Camilo F. Ghirardo, Giulio Bothien, Mirko Polifke, Wolfgang |
| et. al: | No |
| DOI: | 10.1115/1.4051954 10.21256/zhaw-23482 |
| Erschienen in: | Journal of Engineering for Gas Turbines and Power |
| Band(Heft): | 143 |
| Heft: | 12 |
| Seite(n): | 121004 |
| Erscheinungsdatum: | 2021 |
| Verlag / Hrsg. Institution: | The American Society of Mechanical Engineers |
| ISSN: | 0742-4795 1528-8919 |
| Sprache: | Englisch |
| Schlagwörter: | Thermoacoustics; Modelling |
| Fachgebiet (DDC): | 530: Physik 620: Ingenieurwesen |
| Zusammenfassung: | Heavy-duty land-based gas turbines are often designed with can-annular combustors, which consist of a set of identical cans, acoustically connected on the upstream side via the compressor plenum, and, downstream, with a small annular gap located at the transition with the first turbine stage. The modeling of this cross-talk area is crucial to predict the thermo-acoustic modes of the system. Thanks to the discrete rotational symmetry, Bloch wave theory can be exploited to reduce the system to a longitudinal combustor with a complex-valued equivalent outlet reflection coefficient, which models the annular gap. The present study reviews existing low-order models based purely on geometrical parameters and compares them to 2D Helmholtz simulations. We demonstrate that the modeling of the gap as a thin annulus is not suited for can-annular combustors and that the Rayleigh conductivity model only gives qualitative agreement. We then propose an extension for the equivalent reflection coefficient that accounts not only for geometrical but also flow parameters, by means of a characteristic length. The proposed model is in excellent agreement with 2D simulations and is able to correctly capture the eigenfrequencies of the system. We then perform a Design of Experiments study that allows us to explore various configurations and build correlations for the characteristic length. Finally, we discuss the validity limits of the proposed low-order modeling approach. |
| URI: | https://zenodo.org/record/6546709/ https://digitalcollection.zhaw.ch/handle/11475/23482 |
| Volltext Version: | Akzeptierte Version |
| Lizenz (gemäss Verlagsvertrag): | CC BY 4.0: Namensnennung 4.0 International |
| Departement: | School of Engineering |
| Organisationseinheit: | Institut für Energiesysteme und Fluid-Engineering (IEFE) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| 2021_Fournier-etal_Low-order-modeling-of-can-annular-combustors.pdf | 504.33 kB | Adobe PDF |  Öffnen/Anzeigen |
Zur Langanzeige
Fournier, G. J. J., Meindl, M., Silva, C. F., Ghirardo, G., Bothien, M., & Polifke, W. (2021). Low-order modeling of can-annular combustors. Journal of Engineering for Gas Turbines and Power, 143(12), 121004. https://doi.org/10.1115/1.4051954
Fournier, G.J.J. et al. (2021) ‘Low-order modeling of can-annular combustors’, Journal of Engineering for Gas Turbines and Power, 143(12), p. 121004. Available at: https://doi.org/10.1115/1.4051954.
G. J. J. Fournier, M. Meindl, C. F. Silva, G. Ghirardo, M. Bothien, and W. Polifke, “Low-order modeling of can-annular combustors,” Journal of Engineering for Gas Turbines and Power, vol. 143, no. 12, p. 121004, 2021, doi: 10.1115/1.4051954.
FOURNIER, Guillaume J. J., Max MEINDL, Camilo F. SILVA, Giulio GHIRARDO, Mirko BOTHIEN und Wolfgang POLIFKE, 2021. Low-order modeling of can-annular combustors. Journal of Engineering for Gas Turbines and Power [online]. 2021. Bd. 143, Nr. 12, S. 121004. DOI 10.1115/1.4051954. Verfügbar unter: https://zenodo.org/record/6546709/
Fournier, Guillaume J. J., Max Meindl, Camilo F. Silva, Giulio Ghirardo, Mirko Bothien, and Wolfgang Polifke. 2021. “Low-Order Modeling of Can-Annular Combustors.” Journal of Engineering for Gas Turbines and Power 143 (12): 121004. https://doi.org/10.1115/1.4051954.
Fournier, Guillaume J. J., et al. “Low-Order Modeling of Can-Annular Combustors.” Journal of Engineering for Gas Turbines and Power, vol. 143, no. 12, 2021, p. 121004, https://doi.org/10.1115/1.4051954.
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