Abstract
Vibration of flexible panel induced by flow and acoustic processes in a duct can be used for silencer design, but it may conversely generate noise if structural instability is induced. Therefore, a complete understanding of fluid-structure interaction is important for effective noise reduction. A new time-domain numerical methodology has been developed for the calculation of the nonlinear fluid-structure interaction of an excited panel in internal viscous flow. This paper reports its validation with two experiments. The first aims to validate that the methodology is able to capture flow-induced structural instability and its acoustic radiation. The second one is to show that the methodology captures the aeroacoustic-structural interaction in a low-frequency silencer and its response correctly. The importance of inclusion of viscous effect in both cases is also discussed.
| Original language | English |
|---|---|
| Title of host publication | Flinovia-Flow Induced Noise and Vibration Issues and Aspects-II |
| Subtitle of host publication | A Focus on Measurement, Modeling, Simulation and Reproduction of the Flow Excitation and Flow Induced Response |
| Publisher | Springer International Publishing |
| Pages | 253-269 |
| Number of pages | 17 |
| ISBN (Electronic) | 9783319767802 |
| ISBN (Print) | 9783319767796 |
| DOIs | |
| Publication status | Published - 25 May 2018 |
Keywords
- Flow-induced structural instability Aeroacoustic-structural interaction
- Fluid-structure interaction
- Viscous effect
ASJC Scopus subject areas
- General Engineering
- General Physics and Astronomy