Výsledky vyhledávání - "Nikolay Ostrikov"

Experimental Investigation of Mean Flow Profile Effects on Impedance Eduction

Autor: Mikhail Yakovets, V. F. Kopiev, Nikolay Ostrikov, Stanislav L. Denisov, Maxim Ipatov

Publikováno v: INTER-NOISE and NOISE-CON Congress and Conference Proceedings. 263:5858-5868

The results of experimental and computational studies of the three-dimensional mean flow velocity profile influence on the impedance eduction are presented. In order to measure the three-dimensional velocity profile, the TsAGIâ€(tm)s â€œInterf

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::abe1b67da0ab4ba07b1b0aea995ae0aa
https://doi.org/10.3397/in-2021-3332

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Using the Correlation Model of Random Quadrupoles of Sources to Calculate the Efficiency of Turbulent Jet Noise Screening with Geometric Diffraction Theory

Autor: Georgy A. Faranosov, V. F. Kopiev, S. L. Denisov, Sergey Chernyshev, Nikolay Ostrikov

Publikováno v: Acoustical Physics. 66:528-541

The paper presents the results of a computational–experimental study of jet noise reduction using the screening effect. According to correlation theory, the noise sources of a single circular jet are represented by a set of uncorrelated quadrupoles

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c1bd54efcf9647cceb34e477d9affb9
https://doi.org/10.1134/s1063771020050024

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Experimental Confirmation of an Analytical Model of the Sound Propagation in a Rectangular Duct in the Presence of Impedance Transitions and Development of an Impedance Eduction Method Based on it

Autor: M. A. Yakovets, M. S. Ipatov, Nikolay Ostrikov

Publikováno v: Acoustical Physics. 66:105-122

The authors have carried out a systematic study of the accuracy in the impedance eduction of liners in “interferometer with flow” rigs in the absence of grazing flow. A method is proposed for determining the confidence interval of sound pressure

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::512e988724f7c5776e95638daa0744be
https://doi.org/10.1134/s1063771020010066

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Radiation of Sound from the Open End of a Duct Simulating an Air Inlet under Static Conditions and in a Flow

Autor: A. E. Kruglyaeva, M. A. Yakovets, M. S. Ipatov, Nikolay Ostrikov, S. Yu. Sidorov, V. F. Kopiev

Publikováno v: Acoustical Physics. 65:76-89

The paper presents the results of comparative experimental studies on the effect of a significant difference in the radiation patterns of individual acoustic modes from an open duct in steady-state and in-flight modes in the AC-2 anechoic chamber. Wh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3c0f744a19b080ba1081dc50fd02afb
https://doi.org/10.1134/s1063771019010044

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Development of the Strategy of Active Control of Instability Waves in Unexcited Turbulent Jets

Autor: Nikolay Ostrikov, Sergey Chernyshev, Ivan Belyaev, M. Yu. Zaitsev, V. F. Kopiev, V. A. Kopiev, O. P. Bychkov, Georgy A. Faranosov

Publikováno v: Fluid Dynamics. 53:347-360

The possibility of controlling instability waves in the mixing layer of a subsonic unexcited jet is studied. These waves can be noise sources in both free jets and jets as parts of configurations. In the study the method of experimental diagnostics o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2c890987a54ec850e30258cec657eb4b
https://doi.org/10.1134/s0015462818030047

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