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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Kuroda, Masafumi Izawa, Seiichiro Xiong, Ao-Kui Fukunishi, Yu |
| Copyright Year | 2003 |
| Abstract | The aim of this research is to develop a method to suppress the aerodynamic noise generated by a turbulent flow over a cavity. The results of an active control experiment and a passive control experiment are reported. In the active control experiment, the phases of velocity fluctuations along the spanwise direction are changed using piezo-electric actuators, so that the sound waves generated by these velocity fluctuations will eventually cancel each other in the far field. As a result of the active control, an aerodynamic noise suppression of 30 dB is achieved. In the passive control experiment, even a greater noise suppression effect, up to 65 dB is achieved. It is shown that the location and the size of the plate have a strong influence on the noise suppression for passive control. |
| Sponsorship | Fluids Engineering Division |
| Starting Page | 977 |
| Ending Page | 982 |
| Page Count | 6 |
| File Format | |
| ISBN | 0791836967 |
| DOI | 10.1115/FEDSM2003-45194 |
| e-ISBN | 0791836738 |
| Volume Number | Volume 1: Fora, Parts A, B, C, and D |
| Conference Proceedings | ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference |
| Language | English |
| Publisher Date | 2003-07-06 |
| Publisher Place | Honolulu, Hawaii, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Noise (sound) Cavities Sound waves Turbulence Piezoelectric actuators Aerodynamic noise Fluctuations (physics) Acoustics Passive control |
| Content Type | Text |
| Resource Type | Article |
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