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Goinis, Georgios and Nicke, Eberhard (2016) Optimizing surge margin and efficiency of a transonic compressor. In: Proceedings of ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, 13.-17. Jun. 2016, Seoul, Südkorea.
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Abstract
It has been shown in several cases that casing treatment can improve the surge margin of a compressor. The question that is often left unanswered when designing and optimizing a casing treatment for a given compressor stage is whether the casing treatment can still improve the perfor- mance and surge margin when used on an aerodynamically improved rotor. The current work includes the influence of the rotor geometry and casing geometry in the analysis. Several opti- mizations with equal objectives, to improve surge margin and efficiency, were performed. First the different compo- nents were optimized separately. The possible impact of optimizing the rotor, the casing geometry and the casing treatment on surge margin and efficiency are compared in terms of global performance and aerodynamic effects. It is then analyzed how combinations of optimized geometries perform. Of particular interest is how the circumferential grooves perform when used in combination with the opti- mized blade geometry. The optimizations were performed using state of the art CFD and optimization procedures. Constraints on boundary conditions, mass flow rates and stresses were applied in order not to change the behavior of the compressor at design point significantly or to deteriorate the structural mechanics.
| Item URL in elib: | https://elib.dlr.de/105136/ | |||||||||
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| Document Type: | Conference or Workshop Item (Speech) | |||||||||
| Title: | Optimizing surge margin and efficiency of a transonic compressor | |||||||||
| Authors: |
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| Date: | June 2016 | |||||||||
| Journal or Publication Title: | Proceedings of ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Status: | Published | |||||||||
| Keywords: | Casing Treatment, Transonic Compressor Aerodynamics, Optimization | |||||||||
| Event Title: | ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition | |||||||||
| Event Location: | Seoul, Südkorea | |||||||||
| Event Type: | international Conference | |||||||||
| Event Dates: | 13.-17. Jun. 2016 | |||||||||
| Organizer: | ASME | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport | |||||||||
| HGF - Program: | Aeronautics | |||||||||
| HGF - Program Themes: | propulsion systems | |||||||||
| DLR - Research area: | Aeronautics | |||||||||
| DLR - Program: | L ER - Engine Research | |||||||||
| DLR - Research theme (Project): | L - Fan and Compressor Technologies (old) | |||||||||
| Location: | Köln-Porz | |||||||||
| Institutes and Institutions: | Institute of Propulsion Technology > Fan and Compressor | |||||||||
| Deposited By: | Goinis, Georgios | |||||||||
| Deposited On: | 11 Jul 2016 15:10 | |||||||||
| Last Modified: | 11 Jul 2016 15:10 |
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