Modelling Acoustic Excitation of High Frequency Combustion Instability Experiments

Kurzfassung

This work is concerned with the development of a numerical model to predict combustion instability phenomena in a high pressure combustion chamber. The model is being developed to simulate an experimental combustion chamber operated at DLR Lampoldshausen that is acoustically excited using a secondary nozzle and siren wheel system. The experimental data correlates flame response to an acoustic field. Experimental data from cold flow experiments are analysed to study the nature of the acoustic system without having to consider heat release and other processes associated with combustion. The different numerical schemes used to represent the excitation system are investigated.

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