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Titel:

Numerical Simulation of Sound Generation and Propagation in and outside a Cabin Air Intake

Autor(en): M. Konstantinov, C. Wagner
Zusammenfassung: Aerodynamic noise generated by the low Mach number flow in an air cabin intake is investigated numerically. For analysis a realistic intake installed DLR's cabin test facility Do728, was chosen. Two independent approaches were used. First, the so called hybrid approach, based an incompressible simulation of the airflow in the intake and Lighthill aeroacoustical analogy was applied, which separates generation and propagation of sound. The flow field was calculated with OpenSource code OpenFOAM and acoustical sources and sound waves propagation were computed with commercial program Virtual.Lab. Second, the flow and acoustical field were computed in a Computational Aero Acoustics calculation (CAA) with the Star-CCM code. The latter simulates both the unsteady turbulent flow and the noise it generates. The results from both calculations were compared and discussed.
Veranstaltung: Deutscher Luft- und Raumfahrtkongress 2013, Stuttgart
Verlag, Ort: Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2013
Medientyp: Conference Paper
Sprache: englisch
Format: 21,0 x 29,7 cm, 6 Seiten
URN: urn:nbn:de:101:1-20131223790
Stichworte zum Inhalt: Kabinenluftauslass, Schallausbretung
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Veröffentlicht am: 20.12.2013