Wolf, Torsten and Kost, Friedrich and Janke, Erik and Haselbach, Frank and Willer, Lars (2010) Experimental and Numerical Studies on Highly Loaded Supersonic Axial Turbine Cascades. ASME Turbo Expo 2010, 2010-06-14 - 2010-06-18, Glasgow, UK.
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Abstract
For the small to medium thrust range of modern aero engines, highly loaded single stage HP turbines facilitate an attractive alternative to a more conventional 2-stage HPT architecture. Whereas the potential benefits of reductions in component length and part count, hence, in weight and cost do motivate their application, the related risks are in maintaining associated losses of supersonic flows at low values as well as managing the interaction losses between HPT and the downstream sub-component to arrive at competitive levels of component efficiencies. This paper focuses on fundamental aerodynamic concept studies and related cascade experiments in support of a future highly loaded high-pressure turbine architecture. Starting with some general remarks on low-loss supersonic aerodynamic concepts for high-pressure turbines, results from development efforts towards 2D airfoil concepts viable for high-pressure turbine airfoils are shown. In particular, CFD based design approaches are compared against experimental data taken at DLR Göttingen in un-cooled cascade tests and at engine representative levels of Mach and Reynolds numbers. For the airfoils investigated, it turns out that there is indeed a supersonic Mach number range were loss levels are comparable to high Mach number subsonic values, thereby enabling a competitive aerodynamic design concept for a 3D high-pressure turbine stage
Item URL in elib: | https://elib.dlr.de/76693/ | ||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||||||||||||||||||
Title: | Experimental and Numerical Studies on Highly Loaded Supersonic Axial Turbine Cascades | ||||||||||||||||||||||||
Authors: |
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Date: | 14 June 2010 | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||
Series Name: | Proceedings of ASME Turbo Expo 2010 | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Higly Loaded Supersonic Axial Turbine Cascade | ||||||||||||||||||||||||
Event Title: | ASME Turbo Expo 2010 | ||||||||||||||||||||||||
Event Location: | Glasgow, UK | ||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||
Event Start Date: | 14 June 2010 | ||||||||||||||||||||||||
Event End Date: | 18 June 2010 | ||||||||||||||||||||||||
Organizer: | ASME | ||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||||||||
HGF - Program Themes: | Propulsion Systems (old) | ||||||||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||||||||
DLR - Program: | L ER - Engine Research | ||||||||||||||||||||||||
DLR - Research theme (Project): | L - Turbine Technologies (old) | ||||||||||||||||||||||||
Location: | Göttingen | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Propulsion Technology > Turbine | ||||||||||||||||||||||||
Deposited By: | Kost, Dr.rer.nat. Friedrich | ||||||||||||||||||||||||
Deposited On: | 09 Aug 2012 11:03 | ||||||||||||||||||||||||
Last Modified: | 24 Apr 2024 19:42 |
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