Aeroacoustic interaction in a corrugated duct |
| |
| Authors: | V F Kop’ev M A Mironov V S Solntseva |
| |
| Institution: | (1) TsAGI State Research Center, ul. Radio 17, Moscow, 105005, Russia;(2) Andreev Acoustics Institute, Russian Academy of Sciences, ul. Shvernika 4, Moscow, 117036, Russia;(3) Moscow Institute of Physics and Technology, Institutskiĭ per. 9, Dolgoprudnyĭ, Moscow oblast, 141700, Russia |
| |
| Abstract: | 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. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
