Abstract
Acoustic liners are widely used as noise suppression devices, for example in aircraft engines. The effectiveness of the liners is measured through the impedance. In the present study, using a lattice-Boltzmann solver, the response of two liner geometries to grazing acoustic waves is examined. The two geometries have porosity equal to 0.99% and 6.89%, respectively. Impedance is computed using the traditional in-situ method. The results from the simulation are validated against previous experimental data, DNS data and predictions from semi-empirical models. Results show agreement with these reference data, allowing to use the computational setup for further analysis with a realistic liner configuration in the presence of a grazing flow.
| Original language | English |
|---|---|
| Title of host publication | 2018 AIAA/CEAS Aeroacoustics Conference |
| Publisher | American Institute of Aeronautics and Astronautics Inc. (AIAA) |
| Number of pages | 24 |
| ISBN (Electronic) | 9781624105609 |
| DOIs | |
| Publication status | Published - 2018 |
| Event | AIAA/CEAS Aeroacoustics Conference, 2018 - Atlanta, United States Duration: 25 Jun 2018 → 29 Jun 2018 |
Conference
| Conference | AIAA/CEAS Aeroacoustics Conference, 2018 |
|---|---|
| Country/Territory | United States |
| City | Atlanta |
| Period | 25/06/18 → 29/06/18 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.