IMPROVING THE REPRESENTATION OF 1D PERFORMANCE COMPRESSOR MODEL

University essay from KTH/Energiteknik

Author: Alexandre Lions; [2018]

Keywords: ;

Abstract: The thesis project was carried out at SAFRAN AIRCRAFT ENGINES in France with goal to check the feasibility of implementing 1D validated aerodynamic models into the engine performance models. It is a part of a wider project of improving the representation of transient and steady effects that are missing in 0D representations. The main difficulty is to implement this 1D model in the PROOSIS performance software. The focus of the project was to implement the subsonic to choke range of operating conditions consistently within the PROOSIS solver. Therefore, using only simplified aerodynamics, a first instance of the model was programmed. A second instance of the model was able to take into account the choking phenomena. The solution found works in the PROOSIS tool which is a non-causal programming software and manage to unite the subsonic to choke operating range in a single physical system. The model once enriched with the right correlations will be able to be used in a performance model, replacing the compressor maps.

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