Gövert, Simon and Ferraro, Federica and Krumme, Alexander and Buske, Clemens and Tegeler, Marc and Kocian, Frank and di Mare, Francesca (2019) Investigation of combustor-turbine-interaction in a rotating cooled transonic high-pressure turbine test rig, Part II: Numerical modelling and simulation. In: Proceedings of the ASME Turbo Expo. ASME. ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, 17.-21. Jun. 2019, Phoenix, Arizona, USA.
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Abstract
Reducing the uncertainties in the prediction of turbine inlet conditions is a crucial aspect to improve aero engine designs and further increase engine efficiencies. To meet constantly stricter emission regulations, lean burn combustion could play a key role for future engine designs. However, these combustion systems are characterized by significant swirl for flame stabilization and reduced cooling air mass flows. As a result, substantial spatial and transient variations of the turbine inlet conditions are encountered. To investigate the effect of the combustor on the high pressure turbine, a rotating cooled transonic high-pressure configuration has been designed and investigated experimentally at the DLR turbine test facility 'NG-Turb' in Göttingen, Germany. It is a rotating full annular 1.5 stage turbine configuration which is coupled to a combustor simulator. The combustor simulator is designed to create turbine inlet conditions which are hydrodynamically representative for a lean-burn aero engine. A detailed description of the test rig and its instrumentation as well as a discussion of the measurement results is presented in part I of this paper. Part II focuses on numerical modeling of the test rig to further extend the understanding of the measurement results. Integrated simulations of the configuration including combustor simulator and nozzle guide vanes are performed for leading edge and passage clocking position and the effect on the hot streak migration is discussed. The simulation and experimental results at the combustor-turbine interface are compared showing a good overall agreement. The relevant flow features are correctly predicted in the simulations, proving the suitability of the numerical model for application to integrated combustor-turbine interaction Analysis.
Item URL in elib: | https://elib.dlr.de/128277/ | ||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||
Title: | Investigation of combustor-turbine-interaction in a rotating cooled transonic high-pressure turbine test rig, Part II: Numerical modelling and simulation | ||||||||||||||||||||||||
Authors: |
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Date: | June 2019 | ||||||||||||||||||||||||
Journal or Publication Title: | Proceedings of the ASME Turbo Expo | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||
Publisher: | ASME | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Combustor-Turbine-Interaction, Numerical Modelling, Integrated Simulation, FACTOR test rig | ||||||||||||||||||||||||
Event Title: | ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition | ||||||||||||||||||||||||
Event Location: | Phoenix, Arizona, USA | ||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||
Event Dates: | 17.-21. Jun. 2019 | ||||||||||||||||||||||||
Organizer: | American Society of Mechanical Engineers | ||||||||||||||||||||||||
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 - Combustion Chamber Technologies (old) | ||||||||||||||||||||||||
Location: | Köln-Porz | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Propulsion Technology > Combustor Institute of Propulsion Technology > Turbine | ||||||||||||||||||||||||
Deposited By: | Gövert, Simon | ||||||||||||||||||||||||
Deposited On: | 28 Aug 2019 10:28 | ||||||||||||||||||||||||
Last Modified: | 20 Jun 2021 15:52 |
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