Thesis Material temperature analysis of uncooled compressor wheels based on CHT simulations

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Lifetime and thus the exchange interval is of major importance for aluminumcompressor wheels of turbocharger. The reason for this is the temperature field of thecompressor wheel resulting from high circumferential speeds and pressure material temperatures in combination with the centrifugal forces arising from therotational speed define the lifetime and thus the exchange interval. Therefore areliable lifetime prediction requires a precise prediction of the material work focuses the sensitivity of compressor wheel temperatures on geometricalparameters of the compressor stage and cooling system as well as the sensitivity onthermal boundary conditions of the simulation model.

Content of the work is:

• CHT computations for evaluating compressor wheel temperatures
• Comparison of CHT computation results with available measurement data ofcompressor wheel material temperatures
• Numerical investigation of the sensitivity of compressor wheel temperatures onselected geometry parameter (geometry of compressor wheel backside cavity)
• Application of AI methodes to develop surrogate models for temperatureprediction

You can help us with these qualifications

• Masters thesis in mechanical engineering or aerospace engineering or similar
• Basic knowledge in the field of heat transfer
• Experience in CFD simulation (preferred with ANSYS CFX)
• Basic knowledge in turbomachinery is a plus

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