Abstract
This paper presents a boundary element formulation for modelling
the sound field inside and outside a duct in uniform flow. The
model is the first step towards models for predicting the noise
radiated from turbo fan engines. For this purpose the frequency
range is very large (up to ka=40), and non-axisymmetric excitation
is important (spinning modes). In addition the model allows the
duct to be partially or fully treated with an axisymmetric locally
reacting liner. Results determined with the model are compared
with results from the literature and results calculated with an
analytic model.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of Sixth International Congress on sound and Vibration |
| Place of Publication | Lyngby |
| Publisher | Department of Acoustic Technology, Technical University of Denmark |
| Publication date | 1999 |
| Pages | 595-602 |
| Publication status | Published - 1999 |
| Event | 6th International Congress on Sound and Vibration - Kgs. Lyngby, Denmark Duration: 5 Jul 1999 → 8 Jul 1999 Conference number: 6 |
Conference
| Conference | 6th International Congress on Sound and Vibration |
|---|---|
| Number | 6 |
| Country/Territory | Denmark |
| City | Kgs. Lyngby |
| Period | 05/07/1999 → 08/07/1999 |