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Coupled uRANS and FW- H Analysis of Installed Pusher Propeller Aircraft Configurations

Yin, Jianping and Stürmer, Arne and Aversano, Marco (2009) Coupled uRANS and FW- H Analysis of Installed Pusher Propeller Aircraft Configurations. AIAA. 15th AIAA/CEAS Aeroacoustics Conference, 11-13 May 2009, Miami, FL., USA.

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In this paper the aeroacoustic phenomena characteristic of a pusher-propeller cofiguration 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. An established numerical analysis approach is applied in this study, which couples a high-fidelity unsteady aerodynamic simulation using the DLR TAU-Code with the DLR APSIM Code for a subsequent aeroacoustic evaluation. APSIM computes the sound propagation into the far eld based on the Ffowcs-Williams/Hawkings (FW-H) equations. A detailed analysis of the contributions of various components of the installation as well as flight condition specific parameters toward the overall noise generation by the propeller is presented. Furthermore, the possible scattering effect of the wing and nacelle is discussed. A detailed analysis of specific aspects of the numerical approach for the aeroacoustic analysis is made through a comparison between the results achieved using both a FW-H impermeable and permeable formulation. The numerical error due to both jet exhaust and propeller wake impingement on the FW-H permeable surface as well as the impact of cutting a hole in this permeable surface to avoid possible issues of these effects are discussed.

Item URL in elib:https://elib.dlr.de/59197/
Document Type:Conference or Workshop Item (UNSPECIFIED)
Title:Coupled uRANS and FW- H Analysis of Installed Pusher Propeller Aircraft Configurations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:13 May 2009
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Propeller, Installation Effects, Engine-Airframe Installation, Unsteady Aerodyanmics, CFD, CAA, Noise, Aeroacoustics
Event Title:15th AIAA/CEAS Aeroacoustics Conference
Event Location:Miami, FL., USA
Event Dates:11-13 May 2009
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Stürmer, Arne
Deposited On:02 Jul 2009 15:19
Last Modified:26 Mar 2015 13:57

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