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Grogger, H.A. und Lummer, M. und Lauke, T. (2001) Simulating the Interaction of a Three-Dimensional Vortex with Airfoils Using CAA. In: CD-Proceedings. 7th AIAA/CEAS Aeroacoustics Conference, Maastricht (nl), 28.-30.05.2001.
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Kurzfassung
The noise generated by the interaction of localized three-dimensional vorticity with the leading edge of Joukowski-type airfoils is calculated numerically. As governing equations the linearized Euler-equations are solved in curvilinear coordinates. For spatial discretization the well known DRP-scheme is used and for time marching the classical explicit 4th order Runge-Kutta scheme is employed. The mean-flow is pre-calculated analytically. Calculations are performed for three-dimensional vorticity spots striking the leading edge of the airfoil. The influence of the principal fluctuation component on noise generation is assessed by different rotational axes of the vorticity. The investigated airfoils have a thickness of 6, 12 and 18%. As limiting case the simulations are also performed for an infinite thin flat plate. Directivity patterns are evaluated and compared.
| elib-URL des Eintrags: | https://elib.dlr.de/12441/ | ||||||||||||||||
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| Dokumentart: | Konferenzbeitrag (Paper) | ||||||||||||||||
| Zusätzliche Informationen: | LIDO-Berichtsjahr=2002, monograph_id=Paper 2001-2137, | ||||||||||||||||
| Titel: | Simulating the Interaction of a Three-Dimensional Vortex with Airfoils Using CAA | ||||||||||||||||
| Autoren: |
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| Datum: | 2001 | ||||||||||||||||
| Erschienen in: | CD-Proceedings | ||||||||||||||||
| Open Access: | Nein | ||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||
| Stichwörter: | leading edge, Joukowski-type airfoils, linearized Euler-equations, curvilinear coordinates, DRP-scheme, explicit 4th order Runge-Kutta scheme, pre-calculated mean-flow, infinite thin flat plate, directivity patterns | ||||||||||||||||
| Veranstaltungstitel: | 7th AIAA/CEAS Aeroacoustics Conference, Maastricht (nl), 28.-30.05.2001 | ||||||||||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||
| HGF - Programm: | Luftfahrt | ||||||||||||||||
| HGF - Programmthema: | L VU - Luftverkehr und Umwelt (alt) | ||||||||||||||||
| DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||
| DLR - Forschungsgebiet: | L VU - Luftverkehr und Umwelt | ||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | L - Leiser Luftverkehr (alt) | ||||||||||||||||
| Standort: | Köln-Porz , Braunschweig , Göttingen | ||||||||||||||||
| Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik | ||||||||||||||||
| Hinterlegt von: | Grant, Claudia | ||||||||||||||||
| Hinterlegt am: | 31 Jan 2006 | ||||||||||||||||
| Letzte Änderung: | 14 Jan 2010 18:59 |
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