Aeroacoustic interaction in a corrugated duct

Autor:	V. S. Solntseva, M. A. Mironov, V. F. Kop’ev
Rok vydání:	2008
Předmět:	symbols.namesake Absorption (acoustics) Materials science Acoustics and Ultrasonics Flow velocity Acoustics Airflow symbols Strouhal number Duct (flow) External source Sound generation
Zdroj:	Acoustical Physics. 54:197-203
ISSN:	1562-6865 1063-7710
Popis:	The sound generation by an air flow in a corrugated tube is studied experimentally for different values of the corrugation pitch and different tube lengths. The Strouhal numbers of sound generated in different tubes with different flow velocities lie within 0.4–0.6. As the flow velocity increases, the Strouhal number decreases. The effect of sound absorption by an air flow in a corrugated duct is described: in a corrugated tube with a flow, at frequencies below the generation frequency, the absorption of sound produced by an external source is observed. A semiempirical model of aeroacoustic interaction in a corrugated tube is proposed. The model provides a qualitative agreement with the experiment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aff9cd7a8731c70486b508ab425514ac https://doi.org/10.1134/s1063771008020061 Zobrazit plný text záznamu Plný text ve formátu PDF