C. Golia, F. Scaramuzzino, A. Paonessa, A. Sollo

This paper describes the development of a F.E.M. code capable of describing the propagation of acoustic waves in a duct with compressible mean flow. The field equations are derived in terms of acoustic velocity potential by assuming harmonic time and azimuthal dependence and, by using a Galerkin procedure, a weak residual formulation has to be solved by a Finite Element Method. Quadrilateral elements of the "serendipity family" are used, and the solution is obtained directly in terms of complex variables. The code is considered as a general purpose one apt to have built in capabilities of accepting (in a friendly manner) boundary conditions of industrial interest. This paper documents the preliminary validation phase and presents results relative to cases where analytical solutions are available.

DGLR/AIAA 14th Aeroacoustics Conference, 1992

Conference Paper

englisch

21,0 x 29,7 cm, 5 Seiten

DGLR-Bericht, 1992, 1992-03, DGLR/AIAA 14th Aeroacoustics Conference - Proceedings; S.356-360; 1992; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aeroacoustics, finite element method

Bibliothek

1992