Acoustic waves in ducts with sinusoidally perturbed walls and mean flow
- 1 May 1975
- journal article
- research article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 57 (5) , 1036-1039
- https://doi.org/10.1121/1.380570
Abstract
An analysis is presented of the propagation of acoustic waves in a hard‐walled duct with sinusoidally perturbed walls and carrying mean flow. The results show that resonance occurs whenever the wavenumber of the wall undulations is approximately equal to the difference between the wavenumbers of any two propagating modes. It is shown that neither of the resonating modes could exist in the duct without strongly exciting the other resonating mode. Subject Classification: 20.45, 20.60; 28.60.Keywords
This publication has 0 references indexed in Scilit: