A Study of Advanced High Loaded Transonic Turbine Airfoils
Sonoda, T. and Arima, T. and Olhofer, M. and Sendhoff, B. and Kost, F. and Gieß, P.-A. (2004) A Study of Advanced High Loaded Transonic Turbine Airfoils. In: Poceedings of ASME Turbo Expo 2004 Power for Land, Sea and Air, GT2004-53773. ASME Turbo Expo 2004, Vienna, Austria, 14-17 June 2004, Austria.
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The development of high performance turbine airfoils has been investigated under the condition of a supersonic exit Mach number. In order to obtain a new aerodynamic design concept for a high loaded turbine rotor blade, we employed an evolutionary algorithm for numerical optimization. The target of the optimization method, which is called evolution strategy (ES), was the minimization of the total pressure loss and the deviation angle. The optimization process includes the representation of the airfoil geometry, the generation of the grid for a blade-to-blade CFD analysis, and a 2D Navier-Stokes solver with a low-Re k-ƒÕ turbulence model in order to evaluate the performance. Some interesting aspects, for example, a double shock system and an early transition observed in the optimized airfoil are discussed. The increased performance of the optimized blade has been confirmed by detailed experimental investigation, using conventional probes, hot films and L2F system.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||A Study of Advanced High Loaded Transonic Turbine Airfoils|
|Journal or Publication Title:||Poceedings of ASME Turbo Expo 2004 Power for Land, Sea and Air|
|Keywords:||Turbomachinery, Turbine, Aerodynamics, Transonic Flow, Heat Transfer, Windtunnel, Cascade, Measurement Techniques, L2F-measurement, Hot film|
|Event Title:||ASME Turbo Expo 2004, Vienna, Austria, 14-17 June 2004|
|Event Type:||international Conference|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L ER - Engine Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L ER - Engine Research|
|DLR - Research theme (Project):||L - Turbine Technologies|
|Institutes and Institutions:||Institute of Propulsion Technology|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||16 Sep 2005|
|Last Modified:||06 Jan 2010 13:34|
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