Yin, Jianping and Stürmer, Arne (2010) Noise radiation from installed pusher propeller using coupling of Unsteady Panel Method, Actuator disk and FW-H methodology. 16th AIAA/CEAS Aeroacoustics Conference 2010, 07.-09. Juni 2010, Stockholm, Schweden.
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In this paper the aeroacoustic phenomena characteristic of a pusher-propeller configuration and their aerodynamic causes are discussed and analyzed. The work was done in the frame of the European-funded project CESAR (Cost Effective Small AiRcraft). The configuration under study is an industrially relevant design with a wing-mounted pusher propeller, which features a close coupling of the turboshaft engines exhaust nozzles and a five bladed propeller. The coupling of an Actuator Disc (TAU AD) model and unsteady free wake panel method (UPM) is employed for the computation of the propeller unsteady aerodynamic force in "pusher" installations. The Ffowcs-Williams/Hawkings (FW-H) equations based code APSIM is used to compute the sound propagation into the far field. A detailed comparison of the current fast coupling method with high-fidelity uRANS (TAU) simulation results will be presented and the differences between the two approaches are discussed. Furthermore, the possible noise reduction through a redesigned engine exhaust nozzle is discussed.
|Document Type:||Conference or Workshop Item (Speech)|
|Title:||Noise radiation from installed pusher propeller using coupling of Unsteady Panel Method, Actuator disk and FW-H methodology|
|Keywords:||Noise radiation, installation effect, pusher propeller, unsteady panel method (UPM), Actuator disk (TAU), FW-H|
|Event Title:||16th AIAA/CEAS Aeroacoustics Conference 2010|
|Event Location:||Stockholm, Schweden|
|Event Type:||international Conference|
|Event Dates:||07.-09. Juni 2010|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L VU - Air Traffic and Environment (old)|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L VU - Air Traffic and Environment|
|DLR - Research theme (Project):||L - Quiet Air Traffic (old)|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology|
|Deposited By:||Dr.-Ing. Jianping Yin|
|Deposited On:||06 Jul 2010 08:46|
|Last Modified:||26 Mar 2015 13:56|
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