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15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference)
Coherence based source analysis techniques can be used to identify the contribution of turbomachinery core noise sources to pressure measurements in the far-field. The usual approach is to locate a measurement sensor within the engine and to calculate the ordinary coherence function between this and the far-field pressure measurement. If the internal measurement is close to a dominant noise source, the technique will identify this sources' contribution to the overall far-field energy. Modaldoi:10.2514/6.2009-3367 fatcat:q4wfif224fh37jigyqqqihxjyi