Y.V. Vlasov, A.S. Ginevsky, V.G. Pimshtein

Three important problems associated with the role of large-scale coherent structures of jet flows in turbulent mixing processes and in aerodynamic noise generation are investigated in the present work. Firstly, new data illustrating the relation between coherent subsonic jet structures and their sensitivity to the periodic excitation and the jet noise in its far and near field are received. Secondly, from visual investigations of subsonic turbulent jets under high-intensity sound wave excitation there was investigated the interaction of sound waves and large-scale vortex structures generated by them. Thirdly, noise reduction methods for subsonic and supersonic non-isobaric turbulent jets are studied. Those methods are based on the aero-acoustic interaction effect.

DGLR/AIAA 14th Aeroacoustics Conference, 1992

Conference Paper

englisch

21,0 x 29,7 cm, 7 Seiten

DGLR-Bericht, 1992, 1992-03, DGLR/AIAA 14th Aeroacoustics Conference - Proceedings; S.672-678; 1992; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aeroacoustics

Bibliothek

1992