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Validation of the numerical methods through experiments

Comparison with validation data is required to check the suitability and accuracy of new programs and the reliability of the results. This validation data must at least represent the physics implemented in the method or – better – have been measured in appropriate experimental studies. The majority of this data thus originates from grid studies; validation data that depicts a modern blade geometry and the corresponding operational conditions are rare. The Institute of Aeroelasticity is concentrating on this subject through two projects: the BliDes project, funded through the 4th Aviation Research Programme (LuFo IV), and the FUTURE project, funded through the 7th EU Framework Programme. For more validations, the RGP-400 annular cascade wind tunnel, previously located at the EPF Lausanne, will in future also be available for the Institute.

Literature:

• Chenaux, Virginie and Blocher, Michael and Ott, Peter (2014)NUMERICAL AND EXPERIMENTAL INVESTIGATIONS OF AN ANNULAR TRANSONIC COMPRESSOR CASCADE CONSIDERING LEAKAGE FLOWS. 15th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-15, 24. bis 28. Februar 2014, Honolulu, Hawaii (HI), USA.
• May, Markus (2012)Reduced order modelling for the flutter stability analysis of a highly loaded transonic fan. In: Proceedings of ASME Turbo Expo 2012. ASME Turbo Expo 2012, 11.-15. Juni 2012, Kopenhagen, Dänemark.
• May, Markus (2012)Linearized flutter investigations of mistuned turbomachinery blading. Dissertation. DLR research report. Research report 2011-02, 168 S.
• May, Markus and Mauffrey, Yann and Sicot, Frédéric (2011)Numerical flutter analysis of turbomachinery bladings based on time-linearized, time-spectral and time-accurate simulations. In: Proceedings "IFASD 2011". IFASD 2011 - 15th International Forum on Aeroelasticity and Structural Dynamics, 27 - 30 June 2011, Paris, Frankreich.
• Blocher, Michael and May, Markus and Schoenenborn, Harald (2011)Dependency of Unsteady Time-Linearized Flutter Investigations on the Steady State Flow Field. In: Proceedings of ASME Turbo Expo 2011 (GT2011). ASME Turbo Expo 2011, 06 - 10 June 2011, Vancouver, Canada.
• May, Markus and Grüber, Björn (2011)Reliability of Time-Linearized Flutter Predictions Near the Surge Line. In: Proceedings "ETC 9". ETC 9 - The 9th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, 21 - 25 March 2011, Istanbul, Turkey.