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

Autor: Giovanni Bernardini, Jacopo Serafini, Karl-Stéphane Rossignol, Massimo Gennaretti, D. Bianco, Gabriel Reboul, Caterina Poggi, Luigi Vigevano, Stevie Ray Janssen, H. Brouwer, Jianping Yin, Claudio Testa, Mattia Barbarino
Přispěvatelé: Laboratory of Information, Network and Communication Sciences (LINCS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut Mines-Télécom [Paris] (IMT), DAAA, ONERA, Université Paris-Saclay (COmUE) [Châtillon], ONERA-Université Paris Saclay (COmUE), Politecnico di Milano [Milan] (POLIMI), Department of Molecular Medicine, Institut Pasteur, Fondation Cenci Bolognetti - Istituto Pasteur Italia, Fondazione Cenci Bolognetti, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Yin, J., Rossignol, K. S., Barbarino, M., Bianco, D., Testa, C., Brouwer, H., Janssen, S. R., Reboul, G., Vigevano, L., Bernardini, G., Gennaretti, M., Serafini, J., Poggi, C., Institut Mines-Télécom [Paris] (IMT)-Institut National de Recherche en Informatique et en Automatique (Inria)-Université Pierre et Marie Curie - Paris 6 (UPMC), Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome]
Jazyk: angličtina
Rok vydání: 2019
Předmět:
SAILING VESSELS
Helmholtz equation
Computer science
Acoustics
Aerospace Engineering
Transportation
Helicopter Acoustics
Rotorcraft Fuselage Scattering
02 engineering and technology
01 natural sciences
Wind speed
010305 fluids & plasmas
Computational Aero-Acoustiacoustic
symbols.namesake
COMPUTATIONAL AEROACOUSTICS
[SPI]Engineering Sciences [physics]
0203 mechanical engineering
FORECASTING
0103 physical sciences
BOUNDARY ELEMENT METHOD
spheres
NUMERICAL METHODS
Boundary element method
Wind tunnel
shielding experiments
DLR Acoustic Wind Tunnel
GARTEUR
[PHYS]Physics [physics]
020301 aerospace & aeronautics
Numerical analysis
scattering test
noise Propagation
Euler equations
[PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]
COMPUTATIONAL FLUID DYNAMICS
analytical solution
Noise
DLR Laser generated Sound
Fuselage
symbols
WIND TUNNELS
Zdroj: CEAS Aeronautical Journal
CEAS Aeronautical Journal, 2018, 10 (2), pp.531-551. ⟨10.1007/s13272-018-0333-0⟩
CEAS Aeronautical Journal, Springer, 2018, 10 (2), pp.531-551. ⟨10.1007/s13272-018-0333-0⟩
ISSN: 1869-5582
DOI: 10.1007/s13272-018-0333-0⟩
Popis: International audience; 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.
Databáze: OpenAIRE
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