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
Rok vydání:	2019
Předmět:	010302 applied physics Physics geography business.product_category geography.geographical_feature_category Acoustics and Ultrasonics Anechoic chamber Computer simulation Acoustics Radiation Inlet 01 natural sciences Directivity Airplane Amplitude 0103 physical sciences Duct (flow) business 010301 acoustics
Zdroj:	Acoustical Physics. 65:76-89
ISSN:	1562-6865 1063-7710
DOI:	10.1134/s1063771019010044
Popis:	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. When there is an incoming flow, the directivity changes and the amplitude of the maximum of individual modes may vary severalfold. This effect was originally discovered by numerical simulation, and the need to experimentally confirm this difference in the characteristics of individual modes set the task of developing a new technique for projection of the results of acoustic bench tests of aircraft engines to in-flight conditions within an airplane.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b3c0f744a19b080ba1081dc50fd02afb https://doi.org/10.1134/s1063771019010044 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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