Author:
Goeing Jan,Friedrichs Jens
Abstract
AbstractWithin the Collaborative Research Centre 871, geometrical variances caused by repair procedures and deterioration are evaluated for the turbomachinery of a high-bypass aircraft engine. Part of this evaluation is the investigation of the influence of isolated and combined geometric variances on the overall aircraft engine performance. For this purpose, a virtual twin of a research aircraft engine is developed in sub-project D6. This virtual aircraft engine is based on the Pseudo Bond Graph approach, which allows for transient manoeuvres and the effects of interactions to be simulated with a higher degree of accuracy compared to conventional methods. After validation of the model, a design of experiments is performed to analyse the sensitivities between the variances of modules and engine performance. Within the sensitivity analysis, it is shown that the evaluated steady-state and transient performances are mainly influenced by the high-pressure modules, especially by the mass flow and efficiency variances. Furthermore, it is shown that the sensitivities strongly depend on the operating points. However, significant interactions are found which can be attributed to both the high-pressure and low-pressure modules.
Publisher
Springer International Publishing
Reference27 articles.
1. Aschenbruck,J., Adamczuk, R., and Seume, J. R. (2014). Recent progress in turbine blade and compressor blisk regeneration. 22:256–262.
2. Fentaye, A. D., Baheta, A. T., Gilani, S. I., and Kyprianidis, K. G. (2019). A review on gas turbine gas-path diagnostics: State-of-the-art methods, challenges and opportunities. Aerospace, 6(7):83.
3. Fiola, R. (1993). Berechnung des instationaeren Betriebsverhaltens von Gasturbinen unter besonderer Beruecksichtigung von Sekundaereffekten. PhD thesis.
4. Goeing, J., Bode, C., Friedrichs, J., Seehausen, H., Herbst, F., and Seume, J. R. (2020a). Performance simulation of roughness induced module variations of a jet propulsion by using pseudo bond graph theory. In Turbo Expo: Power for Land, Sea, and Air, volume 84058, page V001T01A014. American Society of Mechanical Engineers.
5. Goeing, J., Hinz, L., Lueck, S., Bien, M., and Friedrichs, J. (2022a). Interaction of combined module variances and influence on the overall performance of a turbofan engine. ISABE 2022 (accepted), No. 167.