Abstract
Fluid-structure interaction problem is relevant to the quieting design of flow ducts where the thin duct wall panels are directly in contact with a flowing fluid. The unsteady pressure arising from flow and/or acoustics may excite the flexible panel to vibrate which re-radiate acoustic wave. Evidently there is a strong coupling between the aeroacoustics of the fluid and the structural dynamics of the panel. This phenomenon may be utilized to control noise, if the re-generated wave can be adjusted to cancel the noise. It is necessary to get a better understanding of the nonlinear aeroacoustic-structural coupling in the design of effective flow duct noise control. The present paper reports an investigation of acoustic-structural interaction of flexible panels in a flow duct. The problem is solved by a time-domain numerical methodology which is able to calculate the nonlinear fluid-structure interaction experienced by the flexible panels and their acoustic-structural response correctly. A discussion of the acoustic-structural response with and without mean flow is given.
| Original language | English |
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| Title of host publication | 21st International Congress on Sound and Vibration 2014, ICSV 2014 |
| Publisher | International Institute of Acoustics and Vibrations |
| Pages | 4694-4701 |
| Number of pages | 8 |
| Volume | 6 |
| ISBN (Electronic) | 9781634392389 |
| Publication status | Published - 1 Jan 2014 |
| Event | 21st International Congress on Sound and Vibration 2014, ICSV 2014 - Beijing, China Duration: 13 Jul 2014 → 17 Jul 2014 |
Conference
| Conference | 21st International Congress on Sound and Vibration 2014, ICSV 2014 |
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| Country/Territory | China |
| City | Beijing |
| Period | 13/07/14 → 17/07/14 |
ASJC Scopus subject areas
- Acoustics and Ultrasonics