Directivity of a simplified aeroengine

Abstract : This paper presents theoretical and numerical results on the high frequency directivity of an aeroengine under flight conditions. In this paper, two different theories, based on a Kirchhoff approximation for semi-infinite cylinders, are combined to obtain the far field sound pressure radiated into the whole surrounding space. Although the geometric description of the engine is simplified - in particular, the annular exhaust is not taken into account - it includes some of the main features of a typical aeroengine: subsonic flow, different diameters at the intake and the exhaust ends and the occurence of various flow velocities at the exhaust end to account for the effects of a jet. Numerical examples are given.
Type de document :
Article dans une revue
Acta Acustica united with Acustica, Hirzel Verlag, 2006, 92 (2), pp.225-235
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Contributeur : Pierre-Olivier Mattei <>
Soumis le : mardi 15 janvier 2008 - 10:01:55
Dernière modification le : lundi 29 janvier 2018 - 16:06:02
Document(s) archivé(s) le : vendredi 13 mai 2011 - 23:39:18


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  • HAL Id : hal-00089053, version 1


Pierre-Olivier Mattei. Directivity of a simplified aeroengine. Acta Acustica united with Acustica, Hirzel Verlag, 2006, 92 (2), pp.225-235. 〈hal-00089053〉



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