The joint research project initiated by MTU Aero Engines AG (IN²-HDV) is part of the fifth German nation aviation research program, whose objectives are based on the European strategy document "Flightpath 2050". The overall objectives of the program are the reduction of noise and the saving of resources. More specifically, perceived noise is to be reduced by 65% and CO2 and NOx emissions are to be significantly reduced.
In IN²-HDV the accuracy with which turbomachines and, in particular, compressors is to be improved so that new compressor concepts can be more reliably assessed. Specifically, aeroelastic phenomena and their effects are to be considered in detail. Through a better understanding of aeroelastic phenomena, designs can be further optimized and the costs for the experimental validation of new engines can be reduced.
Within the project the Numerical Methods department is involved within the work package "Aeroelastic optimization". Here, through improvements in the computational efficiency, control and analysis of full wheel simulations it should be possible for the designer to be able to efficiently determine the nature of blade row interactions. In real configurations, blade counts vary such that periodicity can often only be achieved through the resolution of the entire annulus (full wheel). Furthermore, only by using the real blade counts can the excitation frequencies, and their higher harmonics, be determined correctly.
Within the project the following objectives to be achieved:
• Efficient unsteady CFD: The designer should, using current resources, be able to set up a full wheel simulation.
• Efficient (online) post-processing of large data: The user should be able to extract relevant information from large scale 3D flow simulations.