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Wave envelope and infinite element schemes for fan noise radiation from turbofan inlets. (English) Zbl 0556.76072

Finite element models are presented for the calculation of radiated fan noise in the vicinity of turbofan inlets. The models involve the use of conventional axisymmetric finite elements in an inner region close to the inlet. The far field is represented by infinite elements or wave envelope elements. Theory and results are presented for the case with no mean flow.

MSC:

76Q05 Hydro- and aero-acoustics
76M99 Basic methods in fluid mechanics
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