Publication de 6 numéros par an
ISSN Imprimer: 1948-2590
ISSN En ligne: 1948-2604
AZIMUTHAL COMPONENTS OF TURBULENT JET SOUND FIELD:MEASUREMENT RESULTS AND THEIR IMPLEMENTATION FOR VALIDATION OFMODERN NOISE COMPUTATION TECHNIQUES
RÉSUMÉ
This paper presents a brief description of an experimental technique developed at TsAGI for measurement of the amplitudes of the azimuthal components of the aerodynamic sound field, the azimuthal decomposition technique (ADT), and the results of the first attempt to validate numerical approaches to jet noise prediction based on comparison with ADT data. In this sense, ADT ensures a fundamentally new possibility since the directivity of the azimuthal noise components is a much more subtle characteristic than the total noise measured in conventional aeroacoustic experiments. A numerical system being analyzed is developed at St. Petersburg State Polytechnical University and is aimed at jet noise prediction on the basis of large eddy simulations for turbulence and of the surface integral method of FfowcsWilliams and Hawkings for the far-field noise computation. The measurements and the computations are performed for a subsonic unheated jet with velocity V = 137 m/s. The analysis of comparison of the predictions with the experimental data evinces the usefulness of the detailed information provided by ADT not only with respect to validation, but also for enhancement of the accuracy of aeroacoustic simulations.
-
Faranosov Georgy A., Goloviznin Vasily M., Karabasov Sergey A., Kondakov Vasily G., Kopiev Victor F., Zaitsev Mihail A., CABARET method on unstructured hexahedral grids for jet noise computation, Computers & Fluids, 88, 2013. Crossref
-
Kopiev V. F., Faranosov G. A., Generalization of the method of azimuthal decomposition of an acoustic field of a compact source for measurements in the vicinity of a rigid surface, Acoustical Physics, 61, 1, 2015. Crossref
-
Kopiev Victor F., Belyaev Ivan V., Faranosov Georgy A., Zaytsev Mikhail, Aleksentsev Alexey, Bersenev Yuliy, Chursin Valery, Fadeeva Tatyana, Adaptation of the Azimuthal Decomposition Technique to Jet Noise Measuerements of an Aircraft Engine in the Ground Tests, 21st AIAA/CEAS Aeroacoustics Conference, 2015. Crossref
-
Faranosov Georgy A., Belyaev Ivan V., Kopiev Victor F., Zaytsev Mikhail Y., Aleksentsev Alexey A., Bersenev Yuly V., Chursin Valery A., Viskova Tatyana A., Adaptation of the Azimuthal Decomposition Technique to Jet Noise Measurements in Full-Scale Tests, AIAA Journal, 55, 2, 2017. Crossref
-
Faranosov Georgy, Kopiev Victor, Belyaev Ivan V., Bychkov Oleg, Chernyshev Sergey, On the Azimuthal Structure of Installed Jet Noise, 23rd AIAA/CEAS Aeroacoustics Conference, 2017. Crossref