Abstract
A numerical viscous/inviscid coupling approach for the calculation of an acoustic field is applied to the case of sound radiation due to the unsteady interaction between an inviscid vortex (which models a turbulent eddy) and a finite length flexible boundary. Based on the unsteady hydrodynamic information from the known incompressible flowfield, the perturbed compressible acoustic terms are calculated. Calculated results are compared with analytical solutions obtained by the method of matched asymptotic expansions. Results suggest that the monopole field created by the volumetric flow induced by the vibration flexible boundary dominates the overall acoustic power radiation. The longitudinal dipole directly due to the transverse vortex acceleration is only important when the vortex is moving over the flexible boundary. This investigation verified the applicability of the viscous/inviscid approach to flow structure-acoustic interaction.
| Original language | English |
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| Title of host publication | Institute of Noise Control Engineering of the USA - 35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006 |
| Pages | 1599-1605 |
| Number of pages | 7 |
| Volume | 3 |
| Publication status | Published - 1 Dec 2006 |
| Event | 35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006 - Honolulu, HI, United States Duration: 3 Dec 2006 → 6 Dec 2006 |
Conference
| Conference | 35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006 |
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| Country/Territory | United States |
| City | Honolulu, HI |
| Period | 3/12/06 → 6/12/06 |
ASJC Scopus subject areas
- Acoustics and Ultrasonics