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Ehrenfried, K. and Meier, G.E.A. (1993) Numerical Investigation of the Basis Mechanisms of BVI-Noise Generation. Proceedings of the Nineteenth European Rotorcraft Forum, Como, Italy, Sept. 14-16, 1993, Vol. 1, Paper No. B9.
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Abstract
Two-dimensional vortex-airfoil interactions are investigated numerically by solving the unsteady Euler equations using a finite- volume scheme. The computational domain is extended up to 10 cord length away from the airfoil and non-reflecting conditions are applied at the outer boundary. This allows to investigate the propagation of the generated sound waves and the determination in which directions the strongest waves are emitted. The calculations yield a direct connection between the processes directly at the airfoil and the form of the emitted sound waves. The influence of the airfoil geometry and other parameters on these wave forms is discussed.
| Item URL in elib: | https://elib.dlr.de/37007/ | |||||||||
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| Document Type: | Conference or Workshop Item (Paper) | |||||||||
| Additional Information: | LIDO-Berichtsjahr=1993, | |||||||||
| Title: | Numerical Investigation of the Basis Mechanisms of BVI-Noise Generation | |||||||||
| Authors: |
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| Date: | 1993 | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Status: | Published | |||||||||
| Keywords: | Blade Vortex Interaction, Helicopter Noise, Rotor Noise | |||||||||
| Event Title: | Proceedings of the Nineteenth European Rotorcraft Forum, Como, Italy, Sept. 14-16, 1993, Vol. 1, Paper No. B9 | |||||||||
| HGF - Research field: | UNSPECIFIED | |||||||||
| HGF - Program: | Aeronautics | |||||||||
| HGF - Program Themes: | other | |||||||||
| DLR - Research area: | UNSPECIFIED | |||||||||
| DLR - Program: | L DT - Drehflüglertechnologien | |||||||||
| DLR - Research theme (Project): | UNSPECIFIED | |||||||||
| Location: | Köln-Porz , Braunschweig , Göttingen | |||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Experimentelle Strömungsmechanik | |||||||||
| Deposited By: | DLR-Beauftragter, elib | |||||||||
| Deposited On: | 03 Apr 2006 | |||||||||
| Last Modified: | 27 Apr 2009 10:07 |
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