L. Morino, M. Gennaretti

The paper presents a new boundary integral formulation that is applicable for both aerodynamics and aeroacoustics. Specifically, the aerodynamic formulation allows one to obtain the pressure distribution over the surface of the body as well as other aerodynamic quantities. Having obtained these quantities, the same boundary integral representation may be used to solve the aeroacoustic problem, i.e., to evaluate the pressure in the field. The formulation is based on the assumption of potential flows, although an extension of the formulation to viscous flows is briefly outlined. The relationship between this formulation and different approaches available for aeroacoustics is also examined. Numerical results obtained with the proposed formulation are in good agreement with experimental data, for both aerodynamics and aeroacoustics. In addition, we present aeroacoustic results obtained with alternate aeroacoustic formulations which differ only by nonlinear terms; large discrepancies are observed between the various results. Reasons for these discrepancies are provided.

DGLR/AIAA 14th Aeroacoustics Conference, 1992

Conference Paper

englisch

21,0 x 29,7 cm, 8 Seiten

DGLR-Bericht, 1992, 1992-03, DGLR/AIAA 14th Aeroacoustics Conference - Proceedings; S.11-18; 1992; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aeroacoustics, rotors

Bibliothek

1992