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GARTEUR activities on acoustical methods and experiments for studying on acoustic scattering

Yin, Jianping and Rossignol, Karl-Stephane and Barbarino, Mattia and Bianco, Davide and Testa, Claudio and Brouwer, Harry and Janssen, Stevie Ray and Reboul, Gabriel and Vigevano, Luigi and Bernardini, Giovanni and Gennaretti, Massimo and Serafini, Jacopo and Poggi, Caterina (2018) GARTEUR activities on acoustical methods and experiments for studying on acoustic scattering. CEAS Aeronautical Journal, pp. 1-21. Springer. DOI: 10.1007/s13272-018-0333-0 ISSN 1869-5590

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Abstract

This paper deals the activities conducted in the GARTEUR Action Group HC/AG-24 to address the noise scattering of helicopter rotors in the presence of the fuselage. The focus of the Action Group is on the development and the validation of numerical prediction methods and establishing an experimental data base for numerical validations. The numerical methods include boundary element method for solving the Helmholtz equation and computational aeroacoustic method for solving linearized Euler equations. The test activities are conducted in the DLR Acoustic Wind Tunnel in Braunschweig. In the current paper, the results from the numerical simulations, the wind tunnel tests as well as numerical and test comparisons are addressed. The test configurations include the sphere, the sphere with sting support and a finite NACA0012 wing (thanks to share data with a NATO STO group). The acoustic predictions of the scattering by spheres will be compared with the analytic solution to address the influence of the sphere support systems at different wind speeds. The acoustic predictions of the scattering by NACA0012 wing will be analyzed and compared to available test results for different source locations and frequencies.

Item URL in elib:https://elib.dlr.de/124586/
Document Type:Article
Title:GARTEUR activities on acoustical methods and experiments for studying on acoustic scattering
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Yin, JianpingJianping.Yin (at) dlr.deUNSPECIFIED
Rossignol, Karl-StephaneKarl-Stephane.Rossignol (at) dlr.deUNSPECIFIED
Barbarino, Mattiam.barbarino (at) cira.itUNSPECIFIED
Bianco, Davided.bianco (at) cira.itUNSPECIFIED
Testa, Claudioclaudio.testa (at) cnr.itUNSPECIFIED
Brouwer, HarryHarry.Brouwer (at) nlr.nlUNSPECIFIED
Janssen, Stevie RayStevie.Ray.Janssen (at) nlr.nlUNSPECIFIED
Reboul, GabrielGabriel.Reboul (at) onera.frUNSPECIFIED
Vigevano, LuigiPolitecnico di MilanoUNSPECIFIED
Bernardini, Giovannig.bernardini (at) uniroma3.itUNSPECIFIED
Gennaretti, Massimom.gennaretti (at) uniroma3.itUNSPECIFIED
Serafini, Jacoposerafini (at) uniroma3.itUNSPECIFIED
Poggi, Caterinapoggicaterina (at) yahoo.itUNSPECIFIED
Date:8 October 2018
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.1007/s13272-018-0333-0
Page Range:pp. 1-21
Publisher:Springer
ISSN:1869-5590
Status:Published
Keywords:Helicopter Acoustics, Rotorcraft Fuselage Scattering, Computational Aero-Acoustiacoustic, scattering test, shielding experiments,spheres, noise Propagation, analytical solution, DLR Laser generated Sound,DLR Acoustic Wind Tunnel, GARTEUR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Quiet und Comfortable Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, BS
Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Yin, Dr.-Ing. Jianping
Deposited On:13 Dec 2018 14:42
Last Modified:13 Dec 2018 14:42

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